CN115767381A - Vibration sound production unit and wearable equipment - Google Patents

Abstract

The invention discloses a vibration sound production unit and wearable equipment. The shell is provided with an inner cavity; the vibrating diaphragm component is arranged in the inner cavity and connected with the shell; the vibration device comprises a framework provided with a containing channel, an armature which is arranged in the framework in a penetrating way and is relatively fixed with the shell, two groups of magnet assemblies arranged in the containing channel, an elastic piece connected between the armature and the framework and a coil surrounding the outside of the armature, wherein the coil is positioned between the two groups of magnet assemblies; the magnetic assemblies comprise two magnets which are oppositely arranged at intervals, the two magnets are arranged on two sides of the armature at intervals along the vibration direction, and the two groups of the magnetic assemblies are magnetized along the vibration direction and are opposite in magnetizing direction; the coil is used for driving the framework to vibrate relative to the armature, and the framework is connected with the vibrating diaphragm component and drives the vibrating diaphragm component to blow air to produce sound. The vibration sound production unit can simultaneously realize bone conduction sound transmission and air conduction sound transmission, and has high driving efficiency and lower energy consumption.

Description

Vibration sound production unit and wearable equipment

Technical Field

The invention relates to the technical field of vibration sounding, in particular to a vibration sounding unit and wearable equipment.

Background

The vibration sound generating unit generally transmits sound by means of air conduction or bone conduction. The air conduction drives air to sound through the vibrating diaphragm, and the bone conduction transmits vibration to the skull and transmits sound through the skull.

In the prior art, vibration sound production is usually realized through a vibration sound production unit of a moving coil structure and a moving iron structure. In the moving coil structure, a coil of the vibration sounding unit is arranged in a magnetic field formed by the magnet and the magnetic conduction piece, the magnet and the magnetic conduction piece are fixed, the coil is suspended through the elastic sheet, and the coil vibrates along the axis of the coil under the interaction force with the magnetic field after being electrified. In the moving iron structure, at least part of a vibration assembly consisting of a magnet and a magnetic conduction piece of the vibration sounding unit is arranged in a coil, the coil is fixed, the vibration assembly is suspended through an elastic sheet, and after the coil is electrified, the vibration assembly vibrates along the axis of the coil under the action of magnetic force of a magnetic field generated by the coil.

The vibration sound production unit in the prior art has low energy conversion efficiency, high energy consumption and high sensitivity, and needs to adopt a magnet with a large size to generate a strong enough magnetic field, so that the whole volume of the vibrator is large, and the requirements on long endurance and miniaturization are difficult to meet.

In addition, the vibration sound-producing unit in the prior art can only be used for air conduction sound transmission or bone conduction sound transmission generally, but cannot realize air conduction and bone conduction sound transmission simultaneously, so that the vibration sound-producing unit is difficult to be simultaneously suitable for common people and people with hearing impairment, and has poor adaptability.

Accordingly, there is a need for improvements in the art that overcome the deficiencies in the prior art.

Disclosure of Invention

The invention aims to provide a vibration sound-producing unit and wearable equipment, wherein the vibration sound-producing unit can simultaneously realize bone conduction sound transmission and air conduction sound transmission and has good energy conversion efficiency.

In order to achieve the above object, in one aspect, the present invention provides a vibration sound generating unit, including:

a housing having an inner cavity;

the vibrating diaphragm component is arranged in the inner cavity and connected with the shell; and the number of the first and second groups,

the vibration device comprises a framework provided with a containing channel, an armature which is arranged in the framework in a penetrating mode and is fixed relative to the shell, two groups of magnet assemblies arranged in the containing channel, an elastic piece connected between the armature and the framework and a coil surrounding the outside of the armature, wherein the coil is positioned between the two groups of magnet assemblies;

the magnet assembly comprises two magnets which are oppositely arranged at intervals, the two magnets are arranged on two sides of the armature at intervals along the vibration direction, and the two groups of magnet assemblies are magnetized along the vibration direction and have opposite magnetizing directions;

the coil is used for driving the framework to vibrate relative to the armature, the framework is connected with the vibrating diaphragm component and drives the vibrating diaphragm component to blow air to produce sound.

Further, both ends of the armature extend to the outside of the bobbin and are non-magnetically connected with the housing.

Further, the vibration sound generating unit comprises two groups of elastic pieces which are arranged at intervals along the length direction of the armature, and each group of elastic pieces comprises at least one elastic piece.

Furthermore, the elastic part is made of a non-magnetic material and is made by bending an elastic sheet, and comprises a first connecting part connected with the framework, a second connecting part connected with the armature and two elastic parts connected between the first connecting part and the second connecting part, wherein the number of the first connecting parts is two, and the two elastic parts are positioned at two ends of the elastic part.

Further, each group of the elastic members comprises two elastic members, and the two elastic members are arranged on two sides of the armature in the width direction or the thickness direction at intervals.

Furthermore, the vibrating diaphragm assembly comprises an annular frame connected with the inner wall of the shell, a vibrating plate movably arranged in the annular frame and a film connected with the annular frame and the vibrating plate, and the vibrating plate is driven to vibrate when the framework vibrates.

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

Further, the vibrating diaphragm component divides the inner cavity into a front cavity and a rear cavity, the shell is provided with a sound outlet which is communicated with the outside and the front cavity, and the vibrating device is arranged in the rear cavity.

Further, the casing is made of a non-magnetic material and comprises a first casing and a second casing, at least one of two surfaces of the first casing and the second casing which are connected is provided with two notches, and two end parts of the armature are respectively arranged in the two notches and clamped between the first casing and the second casing.

Further, the coil is fixed relative to the bobbin, or the coil is fixed relative to the armature.

Furthermore, the framework and the armature are made of soft magnetic materials, after the coil is electrified, the part of the armature, which is positioned in the two groups of magnet assemblies, is polarized into two poles with opposite polarities, and a magnetic loop is formed through the framework;

two magnets of the magnet assembly are connected with the framework and form a magnetic loop through the framework.

Furthermore, the two magnets of the magnet assembly are both plate-shaped and are arranged in parallel; the armature is plate-shaped and arranged parallel to the magnet, and the thickness direction of the armature is consistent with the vibration direction of the armature.

In another aspect, the present invention further provides a wearable device including the vibration sound generation unit as described in any one of the above.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the bone conduction sound transmission device, the vibration sound production unit is provided with the vibration device and the vibrating diaphragm assembly, the vibration of the vibration device body can be transmitted to the shell through the armature, meanwhile, the vibration device drives the vibrating diaphragm assembly to blow air, the air conduction sound transmission is achieved, higher sensitivity and richer practical experience are achieved, the use of common people and people with hearing disorder can be met, and the application range is wider. In addition, the whole volume of the vibration sound production unit is small and exquisite, and the vibration sound production unit has a smaller cross section. The coil of the vibration device is wound outside the armature, the polarization efficiency of the coil to the armature is high, the coil and the armature interact together through two groups of magnet assemblies, the driving efficiency (energy conversion efficiency) is improved, the vibration sensitivity is higher, and the energy consumption is lower. Thereby better satisfying the diversified demands for endurance, miniaturization and performance.

2. As an improvement, under the condition that the coil and the framework are relatively fixed, the coil can synchronously move with the framework and the magnet assembly, so that the mass of the vibration component is increased, the vibration quantity can be increased, and the vibration sense is enhanced.

3. As the improvement, the first shell or the second shell of the shell is provided with the notch for fixing the end part of the armature, the armature is clamped between the two shells, the armature can be reliably fixed, the armature is prevented from loosening and moving when vibrating, meanwhile, the vibration of the framework can be reliably transmitted to the shell from the armature, and the vibration and sound transmission efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a vibration sound generating unit according to an embodiment of the present invention.

Fig. 2 is an exploded view of the vibration sound generating unit shown in fig. 1.

Fig. 3 is a sectional view of the vibration sound generating unit shown in fig. 1.

Fig. 4 is a sectional view of the vibration sound generating unit shown in fig. 1 in another direction.

Fig. 5 is an enlarged view of a portion I in fig. 3.

Fig. 6 is a schematic structural view of a vibration device in embodiment 1 of the present invention.

Fig. 7 is an exploded view of the vibration device shown in fig. 6.

Fig. 8 is a sectional view of the vibration device shown in fig. 6.

Fig. 9 is a schematic view of the structure of the armature of the vibration device shown in fig. 6.

Fig. 10 is a schematic view showing the structure of the elastic member of the vibration device shown in fig. 6.

Fig. 11 is a sectional view of the vibration device shown in fig. 6 in another direction.

Fig. 12 is a schematic structural view of a vibration device in embodiment 2 of the present invention.

Fig. 13 is a sectional view of the vibration device shown in fig. 12.

Fig. 14 is a schematic structural view of an elastic member of the vibration device shown in fig. 12.

Fig. 15 is a schematic structural view of a vibration device in embodiment 3 of the present invention.

Fig. 16 is a sectional view of the vibration device shown in fig. 15.

Fig. 17 is a schematic view showing the structure of an elastic member of the vibration device shown in fig. 15.

Fig. 18 is a schematic structural view of a vibration device in embodiment 4 of the present invention.

Fig. 19 is a cross-sectional view of the vibration device shown in fig. 18, in which a protective pad is provided on the magnet.

Fig. 20 is a cross-sectional view of the vibration device shown in fig. 18, showing a protector pad provided on the armature.

Fig. 21 is a schematic structural view of a vibration device in embodiment 5 of the present invention.

Fig. 22 is a schematic structural view of an armature of the vibration device shown in fig. 21.

Fig. 23 is a schematic structural view of a vibration device in embodiment 6 of the present invention.

Fig. 24 is a sectional view of the vibration device shown in fig. 23.

Fig. 25 is a schematic view showing the structure of an elastic member of the vibration device shown in fig. 23.

Fig. 26 is a schematic structural view of a vibration device in embodiment 7 of the present invention.

Fig. 27 is a sectional view of the vibration device shown in fig. 26.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

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 application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As shown in fig. 1 to 3, a vibration sound generating unit according to a preferred embodiment of the present invention includes a housing 80, a diaphragm assembly 81, and a vibration device 83.

The housing 80 is provided with an inner cavity in which the diaphragm assembly 81 and the vibration device 83 are both disposed. The structure of the casing 80 is not limited, in this embodiment, the casing 80 includes a first casing 800 and a second casing 801, the first casing 800 and the second casing 801 are both of a casing-shaped structure with one open end, and end faces of the open ends of the two casings are attached to each other, so as to form an inner cavity for accommodating the diaphragm assembly 81 and the vibration device 83. The first housing 800 is located above the second housing 801 and may be connected thereto by, for example, adhesive bonding, welding, etc.

The vibrating diaphragm component 81 is driven by the vibrating device 83 to blow air to sound, a part of the vibrating diaphragm component is fixedly connected with the shell 80, a part of the vibrating diaphragm component can move relative to the shell 80, and the moving part can blow air to sound when vibrating.

As a preferred embodiment, as shown in fig. 3 to 5, the diaphragm assembly 81 includes an annular frame 810 connected to an inner wall of the first housing 800, a vibration plate 811 movably disposed in the annular frame 810, and a film 812 connecting the annular frame 810 and the vibration plate 811. The film 812 is attached to the upper surface of the ring frame 810 in a covering manner, and the vibration plate 811 is attached to the upper surface of the film 812. The vibration plate 811 has a size smaller than that of the ring frame 810 with a gap therebetween, and the film 812 covers the gap and forms an arch-shaped track in an area corresponding to the gap, so that the vibration plate 811 can freely vibrate in an inner hole area of the ring frame 810, thereby blowing air to generate sound.

As shown in fig. 6 to 9, the vibration device 83 includes a bobbin 1, two sets of magnet assemblies, an armature 4, an elastic member 5, and a coil 6.

The frame 1 is provided with a receiving channel 10, preferably the frame 1 is tubular.

Two sets of magnet assemblies are spaced apart along the length of the armature 4, each set of magnet assemblies comprising two oppositely spaced apart magnets, and for convenience of description, the two sets of magnet assemblies will be referred to hereinafter as the first magnet assembly 2 and the second magnet assembly 3, respectively.

The first magnet assembly 2 includes two first magnets 20 disposed at an interval, and the two first magnets 20 are both disposed in the receiving channel 10 and fixed to the frame 1, for example, may be connected to the frame 1 by gluing or welding to achieve the relative fixation. The two first magnets 20 have the same magnetizing direction, that is, the two first magnets 20 are oppositely arranged in different poles, and in fig. 8, the S pole of each of the two first magnets 20 is located above, and the N pole of each of the two first magnets 20 is located below.

The second magnet assembly 3 includes two second magnets 30 disposed at an opposite interval, and both the two second magnets 30 are disposed in the receiving channel 10 and fixed to the frame 1, for example, may be connected to the frame 1 by gluing or welding to achieve the relative fixation. The two second magnets 30 have the same magnetizing direction. In addition, the two sets of magnet assemblies have opposite magnetizing directions, and in fig. 8, the N poles of the two second magnets 30 are both on the upper side, and the S poles are both on the lower side.

The first magnet assembly 2 and the second magnet assembly 3 form a coaxial channel in which the armature 4 is threaded, i.e. the armature 4 is threaded 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 at intervals in the same direction, and specifically, the two first magnets 20 and the two second magnets 30 are arranged at intervals along a vibration direction in which the bobbin 1 vibrates with respect to the armature 4, that is, along a direction of the vibration axis 4a in fig. 3 (also a vertical direction in the illustrated case). In a preferred embodiment, the first magnet 20 and the second magnet 30 are both made of permanent magnetic material.

The armature 4 is inserted into the receiving channel 10 and fixed relative to the housing 80, and as a preferred embodiment, both ends of the armature 4 extend to the outside of the framework 1 and are connected with the housing 80, so that the armature 4 and the housing 80 are fixed relative to each other. The armature 4 is not in contact with the first and second magnets 20, 30 with a space 40 therebetween to provide a space for the armature 4 to reciprocate with respect to the entirety of the bobbin 1 and the magnet assembly.

The elastic element 5 is used to achieve an elastic connection between the armature 4 and the armature 1 and to drive the armature 1 to return (return to the equilibrium state), partly connected to the armature 4 and partly connected to the armature 1. The elastic part 5 enables the framework 1 sleeved outside the armature 4 to move along the vibration direction relative to the armature 4, and when the framework 1 moves relative to the armature 4, the elastic part 5 is elastically deformed, so that elastic force for driving the armature 4 to reset is provided.

The coil 6 is used to polarize the armature 4 so that the armature 4 is vibrated relative to the armature as a whole of the armature 1 and magnet assembly. Specifically, the armature 4 is made of a soft magnetic material, and after the coil 6 is energized, the armature 4 can be polarized under the magnetic field of the coil 6, and the polarized armature 4 interacts with the magnetic fields of the first magnet assembly 2 and the second magnet assembly 3. To prevent the coil 6 from adversely affecting the polarization of the armature 4, a non-magnetic conductive connection is provided between the armature 4 and the housing 80, e.g., the housing 80 can be made of a non-magnetic conductive material.

As shown in fig. 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, and both ends of the armature 4 extend to the outside of the coil 6 and respectively extend between the two first magnets 20 and the two second magnets 30, and when the coil 6 is energized, the portions of the armature 4 located in the first magnet assembly 2 and the second magnet assembly 3 will be respectively polarized to the opposite poles (N pole and S pole) so as to move under the magnetic field action with the magnets. Specifically, referring to fig. 8, when the left end of the armature 4 is polarized to the N pole and the right end is polarized to the S pole, the first magnet 20 and the second magnet 30 located above the armature 4 are both opposite to the same pole of the armature 4, the armature 4 applies a magnetic repulsive force to both, and the armature 4 applies a magnetic attractive force to the first magnet 20 and the second magnet 30 located below, so that the entire bobbin 1 is moved upward by an upward force. Obviously, when the left end of the armature 4 is polarized to S pole and the right end is polarized to N pole, the two ends of the frame 1 will be subjected to downward magnetic force and thus move downward. By alternately changing the direction of the current applied to the coil 6 (e.g., applying an alternating current), the polarities of the two ends of the armature 4 can be alternately changed, so that the bobbin 1 is subjected to an alternately changing driving force and is translationally vibrated in the vibration direction relative to the armature 4.

When the whole body formed by the framework 1 and the magnet assembly vibrates relative to the shell 80, the vibration is transmitted to the armature 4 through the elastic piece 5 and then transmitted to the shell 80 through the armature 4, and when the vibration is transmitted to a human body, bone conduction sound transmission can be realized. Since the whole of the frame 1 and the magnet assembly has a large vibration mass and can generate a stronger vibration sense, bone conduction sound transmission with high quality can be realized.

In some embodiments, the coil 6 is connected to the armature 4, and the coil 6 and the armature 4 are fixedly connected by gluing or welding, for example, and the coil 6 and the armature 1 are fixed when the frame 1 and the magnet assembly vibrate, and the coil 6 and the frame 1 and the magnet assembly have a gap therebetween, so that the frame 1 and the magnet assembly can vibrate freely. In other embodiments, the coil 6 is attached to the frame 1 and vibrates with the frame 1, so that the frame 1, the coil 6 and the two sets of magnet assemblies vibrate simultaneously, the vibrating mass is larger, and the vibration sensation is further enhanced.

A secure connection between the armature 4 and the housing 80 is particularly important in order to enable a better transmission of vibrations to the housing 80. As shown in fig. 2, in some embodiments, two notches 805 are provided on a surface of the second shell 801 connected to the first shell 800, two ends of the armature 4 are respectively disposed in the two notches 805 and clamped between the first shell 800 and the second shell 801, and the armature 4 and the housing 80 may be fixedly connected by gluing or welding. By arranging the armature 4 in the slot 805, on the one hand the position of the armature 4 can be positioned and on the other hand a secure connection between the armature 4 and the housing 80 can be ensured, so that the armature 4 cannot be dislodged and become loose during long-term vibrations. It is understood that the notch 805 may be provided on the surface where the first housing 801 is connected to the second housing 801.

Further, the frame 1 is connected to the vibrating plate 811, so that when the frame 1 vibrates, it will drive the vibrating plate 811 to vibrate, thereby blowing air to realize air conduction sound transmission. That is, the receiver can transmit sound through bone conduction and air conduction at the same time, can obtain higher sensitivity, and can simultaneously meet the use requirements of normal hearing people and eardrum-damaged people.

As a preferred embodiment, as shown in fig. 3 and 4, the diaphragm assembly 81 is provided with a protrusion 814 protruding downward and connected to the upper surface 101 of the skeleton 1 through the protrusion 814, specifically, the vibration plate 811 is provided with a portion protruding outward toward the skeleton 1, the bottom of the portion is covered with the film 812, the protrusion 814 is formed together with the portion, and the upper surface 101 of the skeleton 1 is connected to the protrusion 814. It is to be understood that the projection 814 may be provided on the skeleton 1 to realize the connection with the vibration plate 811.

As shown in fig. 3, the diaphragm assembly 81 divides the inner cavity into a front cavity 80a and a rear cavity 80b, a sound outlet 802 communicating the outside with the front cavity 80a is formed in the end surface of the first housing 80, and the vibration device 83 is disposed in the rear cavity 80 b. When the bobbin 1 of the vibrating device 83 is driven to vibrate by the coil 6, the vibrating plate 811 is driven to vibrate, which vibrates the air in the front chamber 80a, and produces sound through the sound outlet hole 802.

Vibration sound producing unit not only can realize bone conduction and air conduction transaudient simultaneously in this embodiment, satisfies different crowds' user demand, but also has following advantage at least: the coil 6 of the vibration device 83 surrounds the armature 4, so that the polarization efficiency of the armature 4 is high, and the two sets of magnet assemblies interact with the armature 4 together, thereby being beneficial to improving the driving efficiency (energy conversion efficiency), and having higher vibration sensitivity and lower energy consumption. The whole small in size of vibrating device 83 possesses littleer cross section, is favorable to dwindling the holistic volume of vibration sound generating unit to better satisfying the diversified demand to continuation of the journey, miniaturization and performance.

In some embodiments, the bobbin 1 and the armature 4 are made of soft magnetic material, and when the coil 6 is energized, the N pole and S pole of the armature 4 form a magnetic circuit through the bobbin 1, and in fig. 8, the magnetic circuit is indicated by a dotted line with an arrow, and a magnetic induction line emitted from the N pole of the armature 4 is transmitted to the S pole along the bobbin 1. Through the magnetic conduction effect of skeleton 1, can promote magnetic efficiency by a wide margin, the magnetic field utilization ratio that 6 circular telegrams of coil produced is higher, can further improve the sensitivity and the drive efficiency of vibration, further improves product property ability.

Further, two sets of magnet assemblies also realize the magnetic circuit through skeleton 1 respectively, as shown in fig. 4, the dotted line with the arrow shows that two first magnets 20 pass through the magnetic circuit that skeleton 1 constitutes, can improve the utilization ratio to the magnetic field of magnet by a wide margin, improves magnetic conduction efficiency to further promote the sensitivity and the drive efficiency of vibrating device 83. The magnetic circuit of the two second magnets 20 can be referred to the magnetic circuit of the first magnet 20, and the description thereof is omitted.

In some embodiments, the magnets are each in the form of a flat plate, and the two magnets of each magnet assembly are arranged in parallel and opposite to each other, preferably with the same spacing between the two magnets of the two sets of magnet assemblies. More preferably, the magnet has a rectangular plate shape. In other embodiments, the magnets may be other shapes.

In some embodiments, the armature 4 is also in the form of a flat plate, which is disposed parallel to both the first magnet 20 and the second magnet 30, and the flat plate-shaped armature 4 has a smaller thickness and a larger width, and in fig. 9, the X axis is the longitudinal 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 reduces the distance between the two oppositely disposed magnets, so that the overall vibrating device 83 is more flat and compact. On the other hand, the area of the portion of the armature 4 facing the magnet is larger, which is beneficial to fully utilizing the magnetic field of the magnet and improving the driving force, and obviously, the area of the portion of the armature 4 facing the magnet is not changed all the time in the vibration process because the armature vibrates along the Z axis, so that the driving force is more stable. In other embodiments, the armature 4 may have other shapes, which are not listed here.

In order to achieve better elastic connection between the framework 1 and the armature 4, the vibration sound-generating 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. Like this, two at least parts can obtain the support and the connection of elastic component 5 on the skeleton 1 length direction, and the atress is more stable, is favorable to guaranteeing the reliable vibration of skeleton 1.

The elastic member 5 is made of a non-magnetic material so as to avoid affecting the polarization of the coil 6 on the armature 4 and ensure the reliable operation of the vibration device. The elastic piece 5 is preferably made of beryllium copper or stainless steel spring steel sheet and the like, and has excellent fatigue strength and falling resistance. The elastic member 5 is not limited in structure, and may be, for example, a spring wire, or a leaf spring. As a preferred embodiment, the elastic piece 5 is made of elastic sheets through bending, has good elasticity, can be bonded or welded in a surface-attaching mode, is convenient to mount and is more reliable to use.

The elastic member 5 includes a first connection portion 50, a second connection portion 51, and an elastic portion 52 between the first connection portion 50 and the second connection portion 51. Wherein the first connection portion 50 is adapted to be connected to the armature 1, for example to a side 100 or end 103 of the armature 1, and the second connection portion 51 is adapted to be connected to the armature 4. The elastic member 5 is integrally formed by bending an elastic sheet, and preferably, the elastic portion 52 is bent into a U-shaped convex shape, which facilitates the elastic portion 52 to elastically deform to provide elasticity when vibrating. Preferably, the resilient portion 52 includes one or more U-shaped bends.

The structure of elastic component 5 can be diversified, and in some embodiments, elastic component 5 includes two first connecting portions 50, and two first connecting portions 50 are used for connecting skeleton 1 that is located armature 4 thickness direction both sides or connect skeleton 1 of armature 4 width direction both sides respectively, like this, can improve the stability that elastic component 5 connects, reduce the quantity of the elastic component 5 that needs simultaneously, are favorable to improving assembly efficiency.

It will be appreciated that the construction of the vibration device 83 may vary and will be described in further detail below with reference to several embodiments. For convenience of description, the two outer side surfaces of the bobbin 1 spaced apart in the X-axis direction are referred to herein as end surfaces 103. Two outer side surfaces of the bobbin 1 spaced apart in the Y-axis direction are referred to as side surfaces 100. Two outer side surfaces of the bobbin 1 disposed at intervals in the Z-axis direction are referred to as an upper surface 101 and a lower surface 102, respectively.

Example 1

As shown in fig. 6 to 11, in the present embodiment, the frame 1 of the vibration device 83 is tubular, and the frame 1 is a split structure for easy assembly, and includes a semi-tubular upper frame 16 and a semi-tubular lower frame 17. The upper framework 16 and the lower framework 17 are symmetrically arranged and are connected with each other to form a tubular framework 1, and the channel of the tubular framework 1 is the accommodating channel 10. The two groups of magnet assemblies are arranged in the accommodating channel 10 of the framework 1, and two magnets of the magnet assemblies are respectively connected with the upper framework 16 and the lower framework 17.

Seted up mounting hole 12 on skeleton 1, mounting hole 12 runs through skeleton 1 around side 100, and is specific, refer to fig. 7, go up skeleton 16 and lower skeleton 17 and all include base plate 1a and connect four curb plates 1d on base plate 1a, and four curb plates 1d all extend towards base plate 1a with one side, and four curb plates 1d divide into two sets ofly, and two curb plates 1d of every group set up relatively, lie in both sides around curb plate 1d respectively. When the upper frame 16 and the lower frame 17 are connected, the corresponding side plates 1d are connected to each other, thereby forming two closed ring-shaped tubes (the first tube 14 and the second tube 15), and the mounting holes 12 are formed between the two tubes and the two substrates 1 a. The coil 6 is arranged in the mounting hole 12 of the framework 1, and the bottom of the coil 6 is fixedly connected with the two substrates 1a at the upper side and the lower side.

Can push coil 6 in the mounting hole 12 along the direction (along Y to) perpendicular with the axis of skeleton 1 through the mode of side direction installation, also can install with skeleton 16 or lower skeleton 17 coil 6 earlier, and another skeleton of recombination again, it is more convenient to install. In addition, the upper side and the lower side of the coil 6 can be connected with the substrate 1a, so that the fixing firmness of the coil 6 can be improved, and meanwhile, the protection effect of the framework 1 on the coil 6 and the elastic piece 5 is enhanced.

Two convex outer convex plates 180 are arranged at two ends of the framework 1, and the two convex outer convex plates 180 at the same end are respectively positioned at two sides of the armature 4 in the thickness direction and are arranged in parallel and at intervals relatively.

The vibration device 83 includes two sets of elastic members connected to both ends of the frame 1, respectively, each set including two elastic members 5 arranged symmetrically and spaced in the thickness direction of the armature 4. The elastic member 5 has a ring shape with a notch 53, and the entire elastic member 5 has a flat ring shape.

As shown in fig. 10 and 11, both ends of the elastic member 5 are bent to be adjacent without contact, thereby forming notches 53. The middle part and the two end parts of the elastic element 5 are both flat-plate-shaped, the middle part and the end parts of the elastic element 5 are arranged in parallel and oppositely, and a U-shaped elastic part 52 is arranged between the middle part and the end parts, namely the elastic part 52 is provided with a U-shaped bend. One of the middle portion and the two end portions is a first connecting portion 50 for connecting to the bobbin 1, and the other is a second connecting portion 51 for connecting to the armature 4. In fig. 10 and 11, the elastic member 5 has a first connecting portion 50 at an end portion thereof and a second connecting portion 51 at an intermediate portion thereof. The middle portion (second connecting portion 51) of the upper elastic member 5 is connected to the upper surface 43 of the armature 4, and both ends (first connecting portions 50) are connected to the lower surface of the upper outer convex plate 180; the middle portion (second connecting portion 51) of the lower elastic member 5 is connected to the lower surface 44 of the armature 4, and both ends (first connecting portions 50) are connected to the upper surface of the lower outward protruding plate 180.

The two oppositely disposed elastic arms 520 of the elastic portion 52 are disposed in parallel and parallel to the first connecting portion 50 and the second connecting portion 51, and in other embodiments, the two elastic arms 520 of the elastic portion 52 may also be disposed in an inclined manner, referring to fig. 14.

Since the width direction of the elastic member 5 coincides with the longitudinal direction of the armature 4 and the bobbin 1, the bobbin 1 is less likely to vibrate, twist or swing in the longitudinal direction during operation.

Example 2

As shown in fig. 12 to 14, in the present embodiment, the structures of the skeleton 1 and the elastic member 5 of the vibration device 83 are changed as compared with embodiment 1.

In this embodiment, the framework 1 of the vibration device 83 includes a substrate 1a and two U-shaped connecting frames 1b connected to two ends of the substrate 1a, after the two connecting frames 1b are connected to the substrate 1a, two closed ring-shaped tube bodies are formed, which are respectively a first tube body 14 and a second tube body 15, and the channels in the first tube body 14 and the second tube body 15 cooperate to form the receiving channel 10 of the framework 1. The first magnet assembly 2 and the second magnet assembly 3 are disposed in the accommodating passage 10, and specifically, two sets of magnet assemblies are disposed in the first tube 14 and the second tube 15, respectively. Two bodys all are the square tube form, and two sets of magnet subassemblies all have a magnet to link to each other with base plate 1a, and another magnet links to each other with link 1 b.

A mounting groove 11 is formed between the two tube bodies and the substrate 1a, the coil 6 is disposed in the mounting groove 11, two end faces of the coil 6 are connected with the end face of the connecting frame 1b exposed in the mounting groove 11, and the bottom face of the coil is connected with the substrate 1a, and the connection mode can be adhesive connection, for example. Because coil 6 trilateral and outside contact, consequently, not only can make things convenient for the equipment of coil 6, can also improve its radiating effect.

The armature 4 is in a long flat plate shape, and is arranged in the first tube 14, the coil 6 and the second tube 15 in a penetrating way, convex bosses 42 are arranged at two ends of the armature 4, the width of each boss 42 is smaller than that of other parts of the armature 4, and the bosses extend to the outside of the framework 1 and the elastic piece 5 along the length direction.

The vibrating device comprises two groups of elastic pieces which are symmetrically arranged at two ends of the framework 1, each group of elastic pieces comprises two elastic pieces 5 which are arranged along the thickness direction of the armature 4 at intervals, and the two elastic pieces 5 are symmetrically arranged. The structure and the connection mode with the framework 1 can refer to the embodiment 1. In this embodiment, the two elastic arms 520 of the elastic portion 52 are disposed obliquely.

When the vibration device 82 of the present embodiment is mounted to the vibration sound generating unit, the two bosses 42 of the armature 4 are used to connect with the housing 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.

Example 3

As shown in fig. 15 to 17, the structure of the elastic member 5 in the present invention is changed as compared with embodiment 1.

The vibration device 83 includes two sets of elastic members symmetrically disposed at two ends of the frame 1, each set of elastic members includes two elastic members 5 disposed at intervals along the width direction of the armature 4, and the two elastic members 5 are symmetrically disposed. As shown in fig. 16 and 17, the elastic element 5 is made of an elastic sheet by bending, and includes two first connecting portions 50 located at two ends and a second connecting portion 51 located in the middle, and the first connecting portion 50 and the second connecting portion 51 are both sheet-shaped and arranged in parallel. Obviously, since the first connecting portion 50 and the second connecting portion 51 are connected by the elastic portion 52, the elastic member 5 has two elastic portions 52, and each elastic portion 52 includes a U-shaped bend. The two first connecting portions 50 of the elastic member 5 are connected to the side surfaces 1800 of the upper and lower two protruded plates 180, respectively, and the second connecting portion 51 is connected to the side surface 45 of the armature 4.

Example 4

The bobbin 1 does not have to be provided with the mounting hole 11 or the mounting groove 12, and may be entirely surrounded outside the coil 6.

As shown in fig. 18, in this embodiment, compared with embodiment 3, the frame 1 is formed by connecting two half-tubular upper and lower frames 16 and 17, and the mounting hole 12 is not opened. The framework 1 is tubular and surrounds the outside of the coil 6, so that the protection effect on the coil 6 is more comprehensive. The side 100 of the framework 1 is further provided with a wiring hole 13 for the coil 6 to be wired, and preferably, the front side 100 and the rear side 100 of the framework 1 are both provided with one wiring hole 13.

In the present embodiment, as shown in fig. 19 and 20, a protective pad 7 is further provided between the magnet and the armature 4, and the armature 4 and the magnet are separated by the protective pad 7, thereby preventing the armature 4 from directly contacting the magnet and thus providing a protective function. The protective pad 7 is made of a non-magnetic material, such as aluminum, copper, stainless steel, etc., and can prevent seizure due to contact between the armature 4 and the magnet in some extreme conditions. The protection pad 7 may be made of a hard material or a flexible material, and as a preferred embodiment, the protection pad 7 is made of a flexible material, such as silicone, rubber, etc., and can play a role of buffering, so as to prevent the armature 4 from directly impacting the magnet in an extreme state, and causing damage to the armature 4 or the magnet. Through setting up protection pad 7, can make vibrating device fall, receive the striking or work when unusual, still can keep good working property, improve vibrating device's reliability.

The protective pad 7 may be provided on the armature 4 or on the magnet.

As a preferred embodiment, as shown in fig. 19, the protection pads 7 are disposed on the surfaces of the two first magnets 20 and the two second magnets 30 facing the armature 4, so that, in the event of an abnormal condition, such as a drop, an impact, etc., even if the armature 4 is displaced to a large extent, the protection pads 7 only contact with the protection pads and do not attract the magnets, thereby effectively protecting the magnets and the armature 4 and further improving the drop-proof performance of the product.

The protection pad 7 may be provided on the armature 4 in addition to the magnet, and as shown in fig. 20, the protection pad 7 is provided on both the upper surface 43 and the lower surface 44 of the armature 4 in the region corresponding to the magnet, and can also perform the anti-seize protection function.

Obviously, the protective pad 7 can also be provided on both the magnet and the armature 4.

Example 5

The elastic member 5 may be provided in the width direction in the same direction as the width direction of the armature 4 and the bobbin 1, in addition to being provided in the width direction in the same direction as the length direction of the armature 4 and the bobbin 1.

As shown in fig. 21 and 22, the present embodiment differs from embodiment 2 in the manner of attachment of the elastic member 5. In this embodiment, the end face 41 of the armature 4 is provided with a convex boss 42, and the width of the boss 42 is smaller than the width of the other part of the armature 4 and extends to the outside of the framework 1 along the length direction. The elastic member group comprises two elastic members 5 which are arranged at intervals on two sides of the boss 42. The two elastic members 5 of each group of elastic members are respectively located at two sides of the boss 42, and the two first connecting portions 50 of the elastic members 5 are connected with the end surface 103 of the framework 1, and the second connecting portion 51 is connected with the end surface 41 of the armature 4.

Since the elastic member 5 is connected to the end surface 103 of the frame 1, the protruding plate 180 may not be provided on the end surface 103 of the frame 1. The width direction of the elastic member 5 is the same as the width direction of the armature 4 and the bobbin 1, and displacement or twisting in the width direction is less likely to occur when the bobbin 1 vibrates.

Example 6

The elastic member group of the vibration device 83 may be provided with only one elastic member 5 in addition to the two elastic members 5.

As shown in fig. 23 to 25, in comparison with embodiment 5, in this embodiment, two sets of elastic members of the vibration device 83 each include one elastic member 5, and two elastic members 5 are respectively connected to both end portions of the frame 1.

The elastic member 5 is made of a bent elastic sheet and includes two first connecting portions 50 at two ends and a second connecting portion 51 in the middle, and obviously, the elastic member 5 has two elastic portions 52 because the first connecting portion 50 and the second connecting portion 51 are connected by the elastic portion 52. The resilient portion 52 includes three U-shaped bends. As shown in fig. 24 and 25, the two first connecting portions 50 of the elastic member 5 are perpendicular to the second connecting portion 51 and extend in the width direction of the elastic member 5. The two first connecting portions 50 are connected to the front and rear side surfaces 100 of the bobbin 1, respectively, and the second connecting portions 51 are connected to the upper surface 43 of the armature 4. Obviously, the second connecting portion 51 may also be arranged below the armature 4, in connection with the lower surface 44 thereof.

Example 7

The two sets of elastic members of the vibration device 83 may be disposed between the two sets of magnet assemblies, in addition to being disposed at both ends of the frame 1.

As shown in fig. 26 and 27, in this embodiment, a modification is made to embodiment 2, in this embodiment, each of the first pipe 14 and the second pipe 15 is provided with an inner convex plate 181 extending into the mounting groove 11 and disposed opposite to the base plate 1a, and preferably, the inner convex plate 181 and the base plate 1a are disposed in parallel.

The vibration device comprises two groups of elastic pieces, and each group of elastic pieces comprises two elastic pieces 5 which are arranged at intervals up and down. The upper elastic member 5 is located between the inner convex plate 181 and the armature 4, and the second connecting portion 51 thereof 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 convex plate 181. The elastic member 5 located below the armature 4 is connected between the base plate 1a and the armature 4, and the second connecting portion 51 thereof 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 1 a.

It is understood that the elastic member group may include only one elastic member 5, and the elastic member 5 may be disposed on the upper side of the armature 4 to be connected to the inner convex plate 181 and the armature 4, or may be disposed on the lower side of the armature 4 to be connected to the armature 4 and the base plate 1 a. The elastic member 5 may have other structures, such as the structure of fig. 15 or fig. 25.

It is understood that the above are merely examples of the structure of the vibration device 83, and the vibration device 83 may have other specific embodiments based on the structural principle of the present invention.

The invention also provides a wearable device which comprises the vibration sounding unit. The wearable device may be, for example, an earphone, a hearing aid, bone conduction glasses, a helmet, etc.

The above is only a specific embodiment of the present invention, and any other modifications based on the concept of the present invention are considered as the protection scope of the present invention.

Claims (13)

1. A vibratory sound generating unit, comprising:

a housing (80) having an interior cavity;

the vibrating diaphragm component (81) is arranged in the inner cavity and connected with the shell (80); and the number of the first and second groups,

the vibration device (83) comprises a framework (1) provided with a containing channel (10), an armature (4) which is arranged in the framework (1) in a penetrating mode and is fixed relative to the shell (80), two groups of magnet assemblies arranged in the containing channel (10), an elastic piece (5) connected between the armature (4) and the framework (1) and a coil (6) surrounding the outside of the armature (4), wherein the coil (6) is located between the two groups of magnet assemblies;

the magnet assembly comprises two magnets which are oppositely arranged at intervals, the two magnets are arranged on two sides of the armature (4) at intervals along the vibration direction, and the two groups of magnet assemblies are magnetized along the vibration direction and have opposite magnetizing directions;

coil (6) are used for the drive skeleton (1) is relative armature (4) vibration, skeleton (1) with vibrating diaphragm subassembly (81) link to each other and drive vibrating diaphragm subassembly (81) is blown the air and is sounded.

2. A vibrating sound unit as claimed in claim 1, characterised in that the armature (4) extends with its two ends outside the skeleton (1) and is non-magnetically connected to the housing (80).

3. A vibrating sound-emitting unit according to claim 1, characterised in that it comprises two sets of springs spaced along the length of the armature (4), each set comprising at least one of the springs (5).

4. A vibrating sound-emitting unit according to claim 3, wherein the elastic member (5) is made of a non-magnetic material and is formed by bending an elastic piece, and includes a first connecting portion (50) connected to the frame (1), a second connecting portion (51) connected to the armature (4), and an elastic portion (52) connected between the first connecting portion (50) and the second connecting portion (51), and the number of the first connecting portions (50) is two and is located at both ends of the elastic member (5).

5. A vibrating sound-emitting unit according to claim 3, wherein each set of said elastic members includes two of said elastic members (5), and two of said elastic members (5) are provided at intervals on both sides of said armature (4) in the width direction or the thickness direction.

6. The vibration sound production unit according to claim 1, wherein the diaphragm assembly (81) includes a ring frame (810) connected to an inner wall of the housing (80), a vibration plate (811) movably provided in the ring frame (810), and a film (812) connecting the ring frame (810) and the vibration plate (811), and the skeleton (1) is connected to the vibration plate (811) and drives the vibration plate (811) to vibrate.

7. A vibratory sound unit as claimed in claim 1, wherein at least one of the diaphragm assembly (81) and the skeleton (1) is provided with a protrusion (814) protruding towards and connected to the other.

8. A vibrating sound unit as claimed in claim 1, wherein the diaphragm assembly (81) divides the inner cavity into a front cavity (80 a) and a back cavity (80 b), the housing (80) is provided with a sound outlet (802) communicating the outside with the front cavity (80 a), and the vibrating means (83) is provided in the back cavity (80 b).

9. A vibrating sound emitting unit according to claim 1, wherein the housing (80) is made of a non-magnetic material and includes a first case (800) and a second case (801), at least one of two surfaces where the first case (800) and the second case (801) are connected is provided with two notches (805), and both end portions of the armature (4) are respectively provided in the two notches (805) and sandwiched between the first case (800) and the second case (801).

10. A vibration sound-emitting unit according to claim 1, wherein the coil (6) is fixed relative to the frame (1) or the coil (6) is fixed relative to the armature (4).

11. A vibratory sound unit as claimed in claim 1 wherein said armature (4) and said armature (1) are made of soft magnetic material, and wherein when said coil (6) is energized, the portions of said armature (4) within said two sets of magnet assemblies are polarized to opposite poles and form a magnetic circuit through said armature (1);

two magnets of the magnet assembly are connected with the framework (1) and form a magnetic loop through the framework (1).

12. A vibratory sound unit as claimed in claim 1 wherein both magnets of the magnet assembly are plate-like and are arranged in parallel; the armature (4) is plate-shaped and arranged parallel to the magnet, and the thickness direction of the armature (4) is consistent with the vibration direction of the armature.

13. A wearable device characterized by comprising the vibration sound emitting unit according to any one of claims 1 to 12.

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