WO2024109426A1 - Vibration device, receiver and electronic device - Google Patents

Abstract

A vibration device, a receiver and an electronic device. The vibration device comprises: a frame (1), a first magnet assembly (2), a second magnet assembly (3), an armature (4), elastic members (5), and a coil (6). The first magnet assembly (2) comprises two first magnets (20), which are spaced apart and are opposite to each other, both the first magnets (20) being relatively fixed to the frame (1), and the two first magnets (20) having the same magnetization direction; the second magnet assembly (3) comprises two second magnets (30), which are spaced apart and are opposite to each other, both the second magnets (30) being fixed to the frame (1), and the two second magnets (30) having the same magnetization direction; the armature (4) is arranged between the two first magnets (20) and the two second magnets (30) in a penetrating manner, and forms separation spaces (40) with the first magnets (20) and the second magnets (30); the elastic members (5) are connected between the armature (4) and the frame (1) and are configured to drive the armature (4) to restore a balanced state; and the coil (6) is configured to polarize the armature (4) such that the armature (4) vibrates under the action of magnetic field of the first magnet assembly (2) and the second magnet assembly (3). The vibration device has a more sensitive vibration, high levels of efficiency, low energy consumption and a small size.

Description

Vibration device, receiver and electronic equipment

Priority information: This application claims priority to Chinese patent application No. 202211471666.6 filed on November 23, 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The present invention relates to the technical field of vibration sound generation, and in particular to a vibration device, a receiver and an electronic device.

Background technique

A vibration device is a transducer that can convert electrical signals into mechanical vibrations of corresponding frequencies. A vibration device can be used as a vibrator of a speaker, such as a vibrator of a receiver, which drives the diaphragm to vibrate and agitates the air to produce sound. It can also be used as a vibrator of a bone conduction headset, which transmits mechanical vibrations through the skull to the auditory center through bone conduction, so that people can hear sounds.

The vibrator of the prior art often adopts a moving coil vibration structure, which includes components such as a coil, a magnet, an iron and a spring. The magnet and the iron form an annular spacing space (magnetic gap), and the coil is arranged in the spacing space and connected to the spring. When the coil is energized, the coil will vibrate under the action of the magnetic field, and the vibration is transmitted outward through the spring.

The vibrator with a dynamic coil structure has low transducer efficiency. In order to achieve a certain sensitivity, a larger magnet is needed to generate a sufficiently strong magnetic field, which results in a larger overall volume of the vibrator and makes it difficult to meet the needs of miniaturization. In addition, its driving efficiency is low, resulting in high energy consumption, which affects the battery life of headphones or other electronic devices.

In addition, there are vibrators in the prior art that use a moving iron to drive the diaphragm to produce sound, such as the vibrator of a balanced armature receiver. Compared with the vibrator of the dynamic coil structure, the moving iron vibrator has higher driving efficiency and sensitivity, but due to its structural limitations, it can usually only drive the diaphragm to produce sound and cannot be used as a bone conduction vibrator. The use form is relatively single. Therefore, it is necessary to improve the prior art to overcome the above defects in the prior art.

Summary of the invention

The object of the present invention is to provide a vibration device, a receiver and an electronic device. The driving efficiency is high and the vibration is more sensitive.

To achieve the above-mentioned object of the invention, in a first aspect, the present invention provides a vibration device, comprising:

skeleton;

A first magnet assembly includes two first magnets arranged relatively at an interval, the two first magnets are relatively fixed to the frame, and the magnetization directions of the two first magnets are the same;

A second magnet assembly includes two second magnets arranged relatively at an interval, the two second magnets are relatively fixed to the frame, and the magnetization directions of the two second magnets are the same;

an armature, which is inserted between the two first magnets and the two second magnets, and has a separation space between the armature and the first magnet and the second magnet;

an elastic member connected between the armature and the frame, and used for driving the armature (4) to restore a balanced state; and

The coil is used for polarizing the armature so that the armature vibrates relative to the frame under the action of the magnetic fields of the first magnet assembly and the second magnet assembly.

Furthermore, the first magnet and the second magnet are both arranged at intervals along the vibration direction, the first magnet and the second magnet are both magnetized along the vibration direction, the magnetization directions of the first magnet and the second magnet are opposite or the same, and the vibration direction is the direction of relative vibration of the armature and the skeleton.

Further, the coil is located between the first magnet assembly and the second magnet assembly, and surrounds the outside of the armature.

Further, the coil is relatively fixed to the frame; or,

The coil is fixed relatively to the armature.

Furthermore, the frame and the armature are both made of soft magnetic materials. When the coil is energized, the portion of the armature located within the first magnet assembly and the second magnet assembly is polarized into two poles with opposite polarities, and a magnetic circuit is formed through the frame.

Furthermore, the two first magnets are both connected to the skeleton, and a magnetic circuit is formed through the skeleton;

The two second magnets are both connected to the frame and form a magnetic circuit through the frame.

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

Furthermore, the vibration device also includes a protection pad, which is made of non-magnetic material and is used to separate the armature and the first magnet and the armature and the second magnet.

Furthermore, the skeleton is provided with a receiving channel, and the first magnet assembly and the second magnet assembly are arranged at intervals along the axis of the receiving channel, and are both connected to the inner wall of the receiving channel.

Furthermore, the elastic member includes a first connecting portion connected to the frame, a second connecting portion connected to the armature, and an elastic portion connected between the first connecting portion and the second connecting portion.

Furthermore, the elastic member is made by bending a spring sheet, and the elastic member includes two first connecting parts respectively located at two ends, and the two first connecting parts are respectively located on both sides of the armature, or are arranged opposite to the second connecting part at intervals along the vibration direction.

Further, the vibration device comprises two groups of elastic members arranged at intervals along the length direction of the armature;

Each set of elastic members includes one elastic member; or,

Each group of elastic members includes two elastic members, and the two elastic members are respectively arranged on both sides of the armature in the thickness direction or on both sides in the width direction.

In a second aspect, the present invention provides a receiver, comprising the vibration device as described in any one of the above items.

The receiver comprises a housing and a diaphragm assembly arranged in the housing;

The frame of the vibration device is relatively fixed to the housing, and the armature drives the diaphragm assembly to vibrate; or,

The armature of the vibration device is relatively fixed to the housing, and drives the diaphragm assembly to vibrate through the frame.

In a third aspect, the present invention provides an electronic device, comprising the vibration device as described in any one of the above items, or the receiver as described in any one of the above items.

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

In the present invention, the vibration device includes a first magnet assembly and a second magnet assembly, each of which includes two magnets arranged at a relative interval, and the armature is inserted into the two magnets of the first magnet assembly and the second magnet assembly, and can vibrate under the drive of the coil. The vibration device is driven by two pairs of magnets, and the vibration is more sensitive, efficient, and low in energy consumption, which can better meet the requirements of endurance. In addition, the vibration device can be used in various ways. For example, the frame can be fixed to make the armature vibrate, thereby driving the diaphragm assembly to vibrate and realize air conduction. The armature can also be fixed to make the frame vibrate, which can be used as a bone conduction vibrator to transmit sound.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic three-dimensional diagram of a vibration device in Example 3 of the vibration device of the present invention.

FIG. 2 is a perspective sectional view of the vibration device shown in FIG. 1 .

FIG. 3 is a cross-sectional view of the vibration device shown in FIG. 1 .

FIG. 4 is a schematic diagram of a first magnet assembly forming a magnetic circuit through a skeleton according to an embodiment of the present invention.

FIG. 5 is a perspective schematic diagram of an armature in the vibration device shown in FIG. 1 .

FIG. 6 is a three-dimensional schematic diagram of the vibration device in vibration device example 11 of the present invention.

FIG. 7 is a cross-sectional view of the vibration device shown in FIG. 6 .

FIG8 is a three-dimensional schematic diagram of the skeleton in skeleton example 2 of the present invention.

FIG. 9 is a three-dimensional schematic diagram of the skeleton in skeleton example 3 of the present invention.

FIG10 is a three-dimensional schematic diagram of the skeleton in skeleton example 4 of the present invention.

FIG. 11 is a three-dimensional schematic diagram of the skeleton in skeleton example 5 of the present invention.

FIG12 is a three-dimensional schematic diagram of the skeleton in skeleton example 6 of the present invention.

FIG13 is a three-dimensional schematic diagram of the skeleton in skeleton example 7 of the present invention.

FIG14 is a three-dimensional schematic diagram of the skeleton in skeleton example 8 of the present invention.

FIG15 is a three-dimensional schematic diagram of the skeleton in skeleton example 9 of the present invention.

FIG. 16 is a three-dimensional schematic diagram of the elastic member in elastic member example 1 of the present invention.

FIG. 17 is a side view of the elastic member in FIG. 16 .

FIG. 18 is a three-dimensional schematic diagram of the elastic member in elastic member example 2 of the present invention.

FIG. 19 is a three-dimensional schematic diagram of the elastic member in elastic member example 3 of the present invention.

FIG. 20 is a three-dimensional schematic diagram of an elastic member in another embodiment of elastic member example 3 of the present invention.

Figure 21 is a three-dimensional schematic diagram of the elastic member in elastic member example 4 of the present invention.

Figure 22 is a three-dimensional schematic diagram of the elastic member in elastic member example 5 of the present invention.

Figure 23 is a three-dimensional schematic diagram of the elastic member in elastic member example 6 of the present invention.

FIG. 24 is a three-dimensional schematic diagram of the elastic member in elastic member example 7 of the present invention.

FIG. 25 is a side view of the elastic member in FIG. 24 .

Figure 26 is a three-dimensional schematic diagram of the vibration device in vibration device example 1 of the present invention.

FIG. 27 is a three-dimensional cross-sectional view of the vibration device in FIG. 26 .

FIG. 28 is an exploded view of the vibration device in FIG. 26 .

FIG. 29 is a schematic lateral cross-sectional view of the vibration device in FIG. 26 .

Figure 30 is a three-dimensional schematic diagram of the vibration device in vibration device example 2 of the present invention.

Figure 31 is a three-dimensional schematic diagram of the vibration device in vibration device example 4 of the present invention.

Figure 32 is a three-dimensional schematic diagram of the vibration device in vibration device example 5 of the present invention.

FIG33 is a schematic lateral cross-sectional view of the vibration device in FIG32 .

Figure 34 is a three-dimensional schematic diagram of the vibration device in vibration device example 6 of the present invention.

Figure 35 is a schematic lateral cross-sectional view of the vibration device in Figure 34.

Figure 36 is a three-dimensional schematic diagram of the vibration device in vibration device example 7 of the present invention.

FIG37 is a schematic lateral cross-sectional view of the vibration device in FIG36 .

Figure 38 is a three-dimensional schematic diagram of the vibration device in vibration device example 8 of the present invention.

Figure 39 is a three-dimensional schematic diagram of the vibration device in vibration device example 9 of the present invention.

Figure 40 is a three-dimensional schematic diagram of the vibration device in vibration device example 10 of the present invention.

Figure 41 is a schematic lateral cross-sectional view of the vibration device in Figure 40.

Figure 42 is a three-dimensional schematic diagram of the vibration device in vibration device example 12 of the present invention.

Figure 43 is a schematic lateral cross-sectional view of the vibration device in Figure 42.

Figure 44 is a three-dimensional schematic diagram of the vibration device in vibration device example 13 of the present invention.

Figure 45 is a schematic lateral cross-sectional view of the vibration device in Figure 44.

Figure 46 is a three-dimensional schematic diagram of the vibration device in vibration device example 14 of the present invention.

Figure 47 is a three-dimensional cross-sectional view of the vibration device in Figure 46.

Figure 48 is a side view of the vibration device in Figure 46.

Figure 49 is a cross-sectional view of a vibration device in an embodiment of the present invention, in which a protective pad is arranged on the armature.

Figure 50 is a three-dimensional schematic diagram of the receiver in receiver example 1 of the present invention.

FIG51 is a cross-sectional view of the receiver in FIG50.

Figure 52 is a three-dimensional schematic diagram of the diaphragm assembly of the receiver in Figure 51.

Figure 53 is an enlarged view of part I in Figure 51.

Figure 54 is a schematic diagram of the connection between the skeleton of the vibration device in Figure 51 and the second shell.

Figure 55 is a three-dimensional schematic diagram of the receiver in receiver example 2 of the present invention.

FIG56 is a cross-sectional view of the receiver in FIG55.

Figure 57 is a three-dimensional schematic diagram of the skeleton of the vibration device of the receiver in Figure 56.

Fig. 58 is a cross-sectional view of the receiver in receiver example 3 of the present invention.

FIG. 59 is an exploded view of the receiver in FIG. 58 .

Fig. 60 is a cross-sectional view of the receiver in receiver example 4 of the present invention.

FIG. 61 is an exploded view of the receiver in FIG. 60 .

Fig. 62 is a cross-sectional view of the receiver in receiver example 5 of the present invention.

FIG. 63 is an exploded view of the receiver in FIG. 62 .

Figure 64 is a cross-sectional view of the receiver in receiver example 6 of the present invention.

Figure 65 is a three-dimensional schematic diagram of the skeleton of the vibration device of the receiver in Figure 64.

Fig. 66 is a cross-sectional view of the receiver in receiver example 7 of the present invention.

FIG. 67 is an exploded view of the receiver in FIG. 66 .

Fig. 68 is a cross-sectional view of the receiver in receiver example 8 of the present invention.

Figure 69 is a cross-sectional view of the receiver in Figure 68 from another perspective.

FIG. 70 is an exploded view of the receiver in FIG. 68 .

Fig. 71 is a cross-sectional view of the receiver in receiver example 9 of the present invention.

Figure 72 is a cross-sectional view of the receiver in Figure 71.

FIG. 73 is an exploded view of the receiver in FIG. 71 .

Detailed ways

In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is understandable that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

The terms "including" and "having" and any variations thereof in this application are intended to cover Non-exclusive inclusion. For example, a process, method, system, product or apparatus comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to the process, method, product or apparatus.

Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

As shown in FIG. 1 to FIG. 3 , a vibration device corresponding to a preferred embodiment of the present invention includes a frame 1 , two sets of magnet assemblies, an armature 4 , an elastic member 5 and a coil 6 .

The two groups of magnet assemblies are spaced apart along the length direction of the armature 4 , and both groups of magnet assemblies include two magnets spaced apart from each other. For the convenience of description, the two groups of magnet assemblies are hereinafter referred to as the first magnet assembly 2 and the second magnet assembly 3 .

The first magnet assembly 2 includes two first magnets 20 arranged at a relative interval. The two first magnets 20 are relatively fixed to the frame 1, for example, they can be connected to the frame 1 by gluing or welding to achieve relative fixation. The magnetization directions of the two first magnets 20 are the same, that is, the two first magnets 20 are arranged with opposite poles. In FIG3 , the two first magnets 20 are both with the S pole at the top and the N pole at the bottom.

The second magnet assembly 3 includes two second magnets 30 arranged at a relative interval. The two second magnets 30 are relatively fixed to the frame 1, for example, they can be connected to the frame 1 by gluing or welding to achieve relative fixation. The magnetization directions of the two second magnets 30 are the same. In FIG3 , the two second magnets 30 are both with the N pole at the top and the S pole at the bottom.

The first magnet assembly 2 and the second magnet assembly 3 form a coaxial channel, and the armature 4 is in a strip shape and is arranged in the coaxial channel, that is, 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. Specifically, the two first magnets 20 and the two second magnets 30 are arranged in a spaced manner along the vibration direction, and the vibration direction is the direction of relative vibration of the armature 4 and the skeleton 1, that is, arranged along the direction of the vibration axis 4a in Figure 3 (also in the vertical direction in the illustrated case). As a preferred embodiment, the first magnet 20 and the second magnet 30 are both made of permanent magnetic material.

The armature 4 is not in contact with the first magnet 20 and the second magnet 30 , and a spacing space 40 is provided between the armature 4 and the first magnet 20 and the second magnet 30 to provide a space for the armature 4 to reciprocate relative to the magnets.

The elastic member 5 is used to realize the elastic connection between the armature 4 and the frame 1, and drive the armature 4 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 frame 1. The elastic member 5 allows the armature 4 to pass through the coaxial channel and move relative to the frame 1 along the vibration direction. When the armature 4 and the frame 1 move relative to each other, the elastic member 5 is elastically deformed, thereby providing an elastic force to drive the armature 4 to reset.

The coil 6 is used to polarize the armature 4 so that the armature 4 vibrates relative to the frame 1 under the magnetic field of the first magnet assembly 2 and the second magnet assembly 3. 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, thereby generating magnetism.

As shown in FIG. 2 and FIG. 3 , in some embodiments, 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 extend between the two first magnets 20 and the two second magnets 30, respectively. When the coil 6 is energized, the portion of the armature 4 located in the first magnet assembly 2 and the second magnet assembly 3 will be polarized to two opposite poles (N pole and S pole) respectively, so as to vibrate under the action of the magnetic field of the magnet. Specifically, referring to FIG. 3 , 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 armature 4 with the same pole, and both exert magnetic repulsion on the armature 4, while the first magnet 20 and the second magnet 30 below the armature 4 exert magnetic attraction on the armature 4. In this way, when the skeleton 1 is relatively fixed to the outside world, the armature 4 as a whole is subjected to a downward force and moves downward. Obviously, when the left end of the armature 4 is polarized to the S pole and the right end is polarized to the N pole, the two ends of the armature 4 will be subjected to an upward magnetic force, thereby moving upward. By alternately changing the direction of the current passed into the coil 6 (for example, passing alternating current), the polarity of the two ends of the armature 4 can be alternately changed, so that the armature 4 is subjected to an alternating driving force and vibrates in translation relative to the frame 1 along the vibration direction. It can be understood that the movement is relative. When the frame 1 is fixed relative to an external object in an application, the armature 4 will vibrate in translation up and down after the coil 6 is passed through alternating current; conversely, when the armature 4 is fixed relative to an external object in an application, the frame 1 and the magnet assembly will vibrate in translation up and down relative to the armature 4 together after the coil 6 is passed through alternating current.

By arranging the coil 6 between the first magnet assembly 2 and the second magnet assembly 3 and surrounding the outside of the armature 4, the armature 4 can be efficiently polarized, so that the magnetic flux lines of the armature 4 can more fully interact with the magnets, thereby improving the driving force and sensitivity.

The magnetization directions of the first magnet 20 and the second magnet 30 are arranged as shown in FIG. As shown in FIG72 , in the embodiment shown in FIG72 , the magnetization directions of the first magnet 20 and the second magnet 30 are the same, both with the S pole at the bottom and the N pole at the top (the N pole can also be at the bottom and the S pole at the top). When the armature 4 is polarized with the N pole at the left end and the S pole at the right end (i.e., the situation shown in FIG72 ), the left end will be subjected to an upward magnetic field force and the right end will be subjected to a downward magnetic field force. Conversely, when the armature 4 is polarized with the S pole at the left end and the N pole at the right end, the left end will be subjected to a downward magnetic field force and the right end will be subjected to an upward magnetic field force. In this way, when the polarity of the two ends of the armature 4 changes alternately, the two ends always move in opposite directions, and the armature 4 as a whole swings and vibrates in the direction of the vibration axis.

The vibration device of this embodiment is compact in size and has a smaller cross section. The coil 6 surrounds the outside of the armature 4, and has a high polarization efficiency for the armature 4. The armature 4 is driven by two sets of magnet assemblies, which is conducive to improving the driving efficiency, higher vibration sensitivity, and lower energy consumption. Thus, the diversified requirements for endurance, miniaturization, and performance can be better met.

In some embodiments, the skeleton 1 is made of soft magnetic material. After the coil 6 is energized, the N pole and S pole of the armature 4 form a magnetic circuit through the skeleton 1. In FIG3, the magnetic circuit is illustrated by the dotted line with an arrow. The magnetic flux lines emitted from the N pole of the armature 4 are transmitted to the S pole along the skeleton 1. Through the magnetic conductivity of the skeleton 1, the magnetic conductivity efficiency can be greatly improved, and the utilization rate of the magnetic field generated by the coil 6 when it is energized is higher, which can further improve the vibration sensitivity and driving efficiency, and further improve the product performance.

Furthermore, the two groups of magnet assemblies each realize a magnetic circuit through the skeleton 1, as shown in FIG4 , in which the dotted line with an arrow shows the magnetic circuit formed by the two first magnets 20 through the skeleton 1, which can greatly improve the utilization rate of the magnetic field of the magnet and improve the magnetic conductivity efficiency, thereby further improving the sensitivity and driving efficiency of the vibration device, and lowering the energy consumption. The magnetic circuit of the two second magnets 30 can refer to the magnetic circuit of the first magnet 20, and will not be repeated here.

In some embodiments, the magnets are all in the shape of a plate, and the two magnets of each magnet assembly are arranged parallel to each other, and preferably the spacing between the two magnets of the two sets of magnet assemblies is the same. Further preferably, the magnets are in the shape of a rectangular plate. In other embodiments, the magnets can also be in other shapes.

In some embodiments, the armature 4 is also in the shape of a plate, and is arranged parallel to the first magnet 20 and the second magnet 30. The plate-shaped armature 4 has a smaller thickness and a larger width. In FIG5 , the X-axis is the length direction (left-right direction) of the armature 4, the Y-axis is the width direction (front-back 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 vibration device flatter and more compact. On the other hand, The area of the armature 4 facing the magnet is larger, which is conducive to making full use of the magnetic field of the magnet and improving the driving force. Obviously, since the armature 4 vibrates along the Z axis, the area of the armature 4 facing the magnet remains unchanged during the vibration process, and the driving force is more stable. In other embodiments, the armature can also be in other shapes, which are not listed here one by one.

The skeleton 1 can be an integrated structure or a split structure, and its structure is diverse. The structure of the skeleton 1 is further described in detail below.

For the convenience of description, as shown in FIG3 and FIG4, in this article, the two outer surfaces of the skeleton 1 spaced apart along the X-axis direction are referred to as end surfaces 103. The two outer surfaces of the skeleton 1 spaced apart along the Y-axis direction are referred to as side surfaces 100. The two outer surfaces of the skeleton 1 spaced apart along the Z-axis direction are referred to as upper surface 101 and lower surface 102, respectively.

Skeleton Example 1

In this embodiment, as shown in Figures 6 and 7, the skeleton 1 is tubular and is provided with a receiving channel 10. The first magnet assembly 2 and the second magnet assembly 3 are spaced apart along the axis of the receiving channel 10, and the axis of the receiving channel 10 is consistent with the length direction of the armature 4.

In this embodiment, the frame 1 is a split structure, which includes a semi-tubular upper frame 16 and a lower frame 17, and the upper frame 16 and the lower frame 17 are connected to form a tubular frame 1. The frame 1 is wrapped around the outside of the coil 6, and its protective effect on the coil 6 is more comprehensive. A wiring hole 13 for wiring the coil 6 is also opened on the side 100 of the frame 1. Preferably, a wiring hole 13 is provided on both the front and rear sides 100 of the frame 1.

The skeleton 1 is made of soft magnetic material. The two first magnets 20 and the second magnet 30 are both connected to the inner wall of the receiving channel 10 , so that a magnetic circuit is formed between the two first magnets 20 and between the two second magnets 30 .

In order to facilitate the installation of plate-shaped magnets, the skeleton 1 is preferably in the shape of a rectangular tube, and its receiving channel 10 is a rectangular hole with two flat inner walls located on both sides of the thickness direction of the armature 4. The magnet can be conveniently connected to the flat inner wall by gluing or welding.

Skeleton Example 2

In this embodiment, as shown in FIG8 , the frame 1 is provided with a mounting groove 11 connected to the receiving channel 10. The mounting groove 11 is used to install the coil 6. The mounting groove 11 runs through three surfaces of the frame 1, namely, the two front and rear side surfaces 100 and the upper surface 101. The mounting groove 11 separates the frame 1 into a first tube body 14 and a second tube body 15 located on both sides of the coil 6. The first tube body 14 and the second tube body 15 are provided with a first receiving channel 10a and a second receiving channel 10b, respectively. That is to say, the mounting groove 11 simultaneously divides the receiving channel 10 into a first receiving channel 10 a and a second receiving channel 10 b located on both sides of the coil 6 .

The first magnet assembly 2 and the second magnet assembly 3 are respectively disposed in the first receiving channel 10a and the second receiving channel 10b, and are connected to the inner walls of the receiving channels.

Since the coil 6 is located in the mounting groove 11, compared with the skeleton example 1, this embodiment can increase the volume of the coil 6 without increasing the volume of the vibration device, thereby providing a greater driving force; or, it can reduce the volume of the skeleton 1 while keeping the volume of the coil 6 unchanged, thereby further reducing the volume of the vibration device.

In addition, since most of the coil 6 is exposed to the outside, the heat dissipation effect is better.

In this embodiment, the frame 1 is an integrated structure, which is a single part rather than an assembly formed by connecting multiple parts, and can be made by drawing, casting, stamping, bending, etc. The frame 1 also includes a substrate 1a connected between the first tube body 14 and the second tube body 15 to form a magnetic circuit for the magnetic field generated by the armature 4 when the coil 6 is energized.

It is understandable that the frame 2 can be a one-piece structure or a split structure, which is formed by connecting multiple parts. The frame 1 adopts a split design, the parts are easy to make, the size is stable and easy to assemble, and automatic production can be achieved.

The split-type structure has various forms. For example, the following skeleton examples 3 to 14 show various skeletons 1 that adopt a split-type design.

Skeleton Example 3

As shown in FIG. 9 , in this embodiment, the skeleton 1 includes a base plate 1a and two U-shaped connecting frames 1b. Both connecting frames 1b are opened downward and connected to the base plate 1a, thereby forming two closed annular tubes (ie, a first tube 14 and a second tube 15).

Skeleton Example 4

As shown in Figure 10, in this embodiment, the skeleton 1 includes a substrate 1a, a first tube body 14 and a second tube body 15. The first tube body 14 and the second tube body 15 are integral, both of which are closed rings. The two tube bodies are connected to the same surface of the skeleton 1 and are respectively located at two ends of the skeleton 1.

Skeleton Example 5

As shown in Figure 11, compared with skeleton example 4, in this embodiment, the first tube body 14 and the second tube body 15 are split, both of which include a bottom plate 1e connected to the substrate 1a and a connecting frame 1b connected to the bottom plate 1e, and the connecting frame 1b is U-shaped and connected to the bottom plate 1e to form a closed ring.

Skeleton Example 6

In this embodiment, as shown in FIG. 12 , the frame 1 is provided with a mounting hole 12 communicating with the receiving channel 10 , and the axis of the mounting hole 12 is perpendicular to the axis of the receiving channel 10 .

In the embodiment shown in FIG. 12 , the skeleton 1 includes two first frames 1c, and the two first frames 1c each include a substrate 1a and four side panels 1d. The two first frames 1c of the skeleton 1 are symmetrically arranged and connected by the side panels 1d, thereby forming two closed annular tubes and a mounting hole 12 located between the two tubes. The coil 6 is installed in the mounting hole 12, and the coil 6 can be pushed into the mounting hole 12 in a direction perpendicular to the axis of the receiving channel 10 by lateral installation. The coil can also be installed with the first frame first, and then the two first frames are combined, which is more convenient to install. On the one hand, since the coil 6 is located in the mounting hole 12, its size can be made larger, thereby increasing the driving force, or the volume of the skeleton 1 can be reduced without changing the size of the coil 6. On the other hand, since the coil 6 is exposed to the outside, the heat dissipation area is larger, which is also conducive to improving the heat dissipation effect. In addition, the upper and lower sides of the coil 6 are blocked by the skeleton 1, and the skeleton 1 has a better protection effect on the coil 6.

The axis of the mounting hole 12 can pass through the upper and lower surfaces 101, 102 or the front and rear sides 100 of the skeleton 1. For example, in the embodiments shown in Figures 12 and 13, the axis of the mounting hole 12 passes through the front and rear surfaces of the skeleton 1, while in the embodiments shown in Figures 14 and 15, the axis of the mounting hole 12 passes through the upper and lower surfaces of the skeleton 1.

Skeleton Example 7

As shown in Figure 13, in this embodiment, the skeleton 1 includes a base plate 1a and a first frame body 1c, the base plate 1a is provided with four outwardly protruding protrusions 1f, and the four side panels 1d of the first frame body 1c are respectively connected to the four protrusions 1f, thereby forming two closed ring-shaped tube bodies and a mounting hole 12 located between the two tube bodies.

Skeleton Example 8

As shown in FIG. 14 , in this embodiment, the skeleton 1 includes two connecting members 1g with L-shaped cross-sections. The two connecting members 1g are connected to form a tubular skeleton 1. The skeleton 1 is provided with mounting holes 12 that pass through the upper and lower surfaces 101 and 102 thereof.

Skeleton Example 9

As shown in Figure 15, in this embodiment, the skeleton 1 includes two second frames 1h, the side panels 1d of the two second frames 1h are connected to each other to form a receiving channel 10, and the through holes opened on the base plates 1a of the two second frames 1h cooperate to form a mounting hole 12 that passes through the upper and lower surfaces of the skeleton 1.

It is understood that the above-mentioned structure of the skeleton 1 is only an example. The structural principle of the skeleton 1 in the present invention is There can be other specific embodiments based on this.

As described above, the elastic member 5 can be connected between the frame 1 and the armature 4 to drive the armature 4 to reset through its own elastic deformation. The elastic member 5 is made of non-magnetic material, and the structure 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 by bending, which has good elasticity, can be bonded or welded by surface bonding, is easy to install, firm, and more reliable to use.

The elastic member 5 includes a first connection portion 50, a second connection portion 51, and an elastic portion 52 located between the first connection portion 50 and the second connection portion 51. The first connection portion 50 is used to connect with the skeleton 1, for example, connected to the side surface 100 or the end surface 103 of the skeleton 1, and the second connection portion 51 is used to connect with the armature 4. The elastic member 5 is made of a bent spring sheet as a whole. Preferably, the elastic portion 52 is bent into a U-shaped protrusion shape, which is conducive to the elastic deformation of the elastic portion 52 to provide elastic force during vibration. Preferably, the elastic portion 52 includes one or more U-shaped bends.

The structure of the elastic member 5 can be diversified. In some embodiments, the elastic member 5 includes two first connecting portions 50, which are respectively used to connect the skeleton 1 located on both sides of the armature 4 in the thickness direction or to connect the skeleton 1 on both sides of the armature 4 in the width direction. In this way, the stability of the connection of the elastic member 5 can be improved, and the number of elastic members 5 required can be reduced, which is conducive to improving assembly efficiency.

The structure of the elastic member 5 is further described in detail below by taking several structural examples of the elastic member 5 as an example.

Elastic Part Example 1

In this example, as shown in FIG. 16 and FIG. 17 , the elastic member 5 is in a strip shape as a whole, and the two first connection parts 50 of the elastic member 5 are located on both sides of the second connection part 51. The first connection part 50 and the second connection part 51 are both in a sheet shape and parallel to each other, and an elastic part 52 is provided between the first connection part 50 and the second connection part 51 and is bent along the thickness direction of the elastic member 5. The elastic part 52 is in a U shape and has a U-shaped bend. The approximate position of the elastic part 52 is shown in a dotted box in FIG. 17 .

Elastic Part Example 2

It can be understood that the number of U-shaped bends provided on the elastic part 52 between the first connecting part 50 and the second connecting part 51 is not limited to one. As shown in FIG. 18 , compared with the elastic member example 1, in this example, between the first connecting part 50 and the second connecting part 51, the elastic member 5 is bent multiple times to form two U-shaped bends of the elastic part 52. At the same time, the first connecting part 50 protrudes along the width direction of the elastic member 5, and the second connecting part 51 is connected to the elastic member 5. The connecting portion 51 is perpendicular to each other.

Elastic Part Example 3

The main difference between this example and elastic member example 2 is that, as shown in FIG. 19 , in this example, three U-shaped bent elastic portions 52 are formed between the first connection portion 50 and the second connection portion 51 by bending to further increase the deformation range of the elastic member 5 .

It can be understood that the shape and size of the U-shaped bends provided on the elastic portion 52 are not necessarily the same. For example, in the embodiment shown in FIG. 19 , the elastic portion 52 is provided with U-shaped bends of unequal depths, while in the structure shown in FIG. 20 , the depths of the multiple U-shaped bends of the elastic portion 52 are basically the same.

Elastic Part Example 4

As shown in Figure 21, the main difference between this example and the elastic member example 1 is that two U-shaped bent elastic portions 52 are bent between the first connecting portion 50 and the second connecting portion 51, and the first connecting portion 50 is perpendicular to the second connecting portion 51, which extends along the thickness direction of the elastic member 5.

Elastic Part Example 5

In this example, the elastic member 5 is in the shape of a ring with a notch 53, and the elastic member 5 is in the shape of a flat ring as a whole. As shown in FIG22 , the two ends of the elastic member 5 are bent to be adjacent and non-contacting, thereby forming the notch 53. The middle part and both ends of the elastic member 5 are in the shape of a flat plate, and the middle part and the ends of the elastic member 5 are arranged parallel to each other, and a U-shaped elastic portion 52 is provided between the middle part and the ends. One of the middle part and the two ends is a first connecting portion 50 for connecting to the skeleton 1, and the other is a second connecting portion 51 connected to the armature 4. In FIG22 , the ends of the elastic member 5 are the first connecting portion 50, and the middle part is the second connecting portion 51.

Elastic Example 6

As shown in Figure 23, the main difference between this example and the elastic member example 5 is that in Example 5, the two oppositely arranged elastic arms 520 of the elastic part 52 are arranged at an angle, while in this example, the two elastic arms 520 of the elastic part 52 are arranged in parallel and are parallel to both the first connecting part 50 and the second connecting part 51.

The above are several structural examples of the elastic member 5. It can be understood that the structure of the elastic member 5 is not limited to the above structure, and can be further expanded to more structures.

It is understandable that by setting the elastic member 5 to a structure formed by bending a spring sheet, the armature 4 can be reliably elastically supported in the vibration direction. During the vibration process, due to the structural characteristics of the elastic member 5 itself, the armature 4 is not likely to deform along its width direction, and is not likely to shift its position perpendicular to the vibration axis, and is therefore not likely to collide with the frame 1. Furthermore, even if the vibration device falls, In the event of a fall or impact, the elastic member 5 can also reliably limit the armature 4, preventing it from deflecting in a direction perpendicular to the vibration axis, which is beneficial to improving the anti-fall and anti-impact performance of the vibration device.

In order to improve the reliability of the elastic member 5 supporting the armature 4 and further improve the anti-fall performance of the vibration device, the vibration device includes two groups of elastic member groups arranged at intervals along the length direction of the armature 4, and each group of elastic member groups includes at least one elastic member 5. By setting at least two groups of elastic member groups, the elastic member 5 can reliably support the armature 4, ensure the reliability of the vibration of the armature 4, and at the same time, the elastic force provided by it is greater, which can better resist falling and impact. As a preferred embodiment, the vibration device includes two groups of elastic member groups, and the two groups of elastic member groups are respectively connected to the two ends of the skeleton 1 or are respectively located on both sides of the coil 6 and between the two groups of magnet assemblies.

It should be pointed out that the elastic portion 52 does not have to be arranged in a U-shape, and it can also be sheet-shaped. In this case, the elastic member 5 as a whole can be sheet-shaped, such as the elastic member example 7 described below.

Elastic Part Example 7

As shown in Figures 24 and 25, in this example, the elastic member 5 is approximately in the shape of a sheet, and its fluctuation along the thickness direction is small. Two first connecting parts 50 are provided at both ends of the elastic member 5, and a second connecting part 51 is provided in the middle. The first connecting part 50 and the second connecting part 51 are arranged in parallel and spaced apart in the thickness direction of the elastic member 5, and the first connecting part 50 and the second connecting part 51 are connected by a sheet-shaped elastic part 52. The elastic part 52 is L-shaped, and extends in the width direction of the second connecting part 51. In this way, the elastic member 5 is U-shaped as a whole when viewed from the top.

It should be noted that the sheet-like elastic member 5 can be flat, that is, without undulations in the thickness direction, and the elastic portion 52 can be in other shapes besides L-shaped, such as Z-shaped, which are not listed here. It can be understood that by adjusting the number and elastic coefficient of the elastic member 5, a variety of product performance can be achieved to better meet the requirements of battery life, drop resistance, miniaturization and performance diversification.

It is understandable that various structures of the vibration device can be obtained through different combinations of the structure of the elastic member 5 and the structure of the frame 1. The following is a further detailed description using several embodiments of the vibration device as examples.

Vibration Device Example 1

As shown in FIG. 26 to FIG. 29 , in this embodiment, the structure of the skeleton 1 of the vibration device can refer to skeleton example 3 ( FIG. 9 ), and the structure of the elastic member 5 can refer to elastic member example 3 ( FIG. 19 ).

The coil 6 is arranged in the mounting groove 11 of the frame 1, and its two end surfaces are connected to the end surfaces of the connecting frame 1b exposed in the mounting groove 11, and its bottom surface is connected to the base plate 1a, and the connection method can be, for example, adhesive connection. The armature 4 is in the shape of a long flat plate, which is inserted into the first tube 14, the coil 6 and the second tube 15, and the two ends of the armature 4 are provided with outwardly protruding bosses 42, the width of the bosses 42 is smaller than the width of other parts of the armature 4, and extends to the outside of the frame 1 and the elastic member 5. In the application where the armature 4 is fixed and the frame 1 vibrates, the part of the armature 4 protruding from the elastic member 5 is used for fixed connection with the outside.

The vibration device includes two groups of elastic member groups, each group of elastic member groups includes an elastic member 5, and the two elastic members 5 are symmetrically connected to the two ends of the frame 1. Specifically, as shown in Figure 29, the two first connecting parts 50 of the elastic member 5 are respectively connected to the front and rear side surfaces 100 of the frame 1, and the second connecting part 51 is connected to the upper surface 43 of the armature 4. Obviously, the second connecting part 51 can also be arranged below the armature 4 and connected to its lower surface 44.

Since the width direction of the elastic member 5 is consistent with the length direction of the armature 4, when the armature 4 fixed by the frame 1 vibrates, the armature 4 is unlikely to vibrate, twist or swing in the length direction.

Vibration Device Example 2

The main difference between this embodiment and the vibration device example 1 is that, as shown in FIG30 , in this embodiment, each group of elastic members includes two elastic members 5, and the structure of the elastic members 5 can refer to the structure shown in FIG20 of the elastic member example 3. The two elastic members 5 are symmetrically arranged on the upper and lower sides of the armature 4, wherein the second connecting portion 51 of one elastic member 5 is connected to the second upper surface 43 of the armature 4, and the second connecting portion 51 of the other elastic member 5 is connected to the second lower surface 44 of the armature 4.

By providing two elastic parts 5 symmetrically arranged in an upper and lower manner, the elastic force of the overall elastic part 5 can be further improved, and the anti-fall performance of the vibration device can be improved. Obviously, the change in the number of elastic parts 5 can also adjust the product performance of the vibration device, thereby achieving richer product performance.

Vibration Device Example 3

Compared with the vibration device example 1, the structure of the elastic member 5 in this embodiment is changed. The structure of the elastic member 5 in this embodiment can refer to the above-mentioned elastic member example 1 (Figure 16).

In this embodiment, as shown in FIGS. 1 to 5 , the vibration device includes two groups of elastic member groups respectively connected to the two ends of the frame 1, and each group of elastic member groups includes two elastic members 5 arranged at intervals along the width direction of the armature 4. The armature 4 includes a boss 42 arranged on its end surface 41, and the boss 42 extends along the length direction of the armature 4, and the width is smaller than the width of other parts of the armature 4. The two elastic members 5 are respectively located on both sides of the boss 42, and the two first connecting portions 50 of the elastic member 5 are connected to the end surface 103 of the frame 1, and the second connecting portion 51 is connected to the end surface 41 of the armature 4.

In this embodiment, the width direction of the armature 4 is consistent with the width direction of the elastic member 5. When the armature 4 fixed by the frame 1 vibrates, the armature 4 is not likely to vibrate, twist or swing along the width direction.

Vibration Device Example 4

As shown in FIG. 31 , compared with the vibration device example 1, the structure of the elastic member 5 in this embodiment is changed. The structure of the elastic member 5 in this embodiment can refer to the above-mentioned elastic member example 5 ( FIG. 22 ).

In order to facilitate the installation of the elastic member 5, the two end faces 103 of the frame 1 are each provided with two outwardly protruding convex plates 180. The two outwardly protruding plates 180 at the same end are arranged at intervals up and down. The two outwardly protruding plates 180 are respectively located on both sides of the armature 4 in the thickness direction and are arranged parallel to it.

The vibration device includes two sets of elastic member groups, each set of elastic member groups includes two elastic members 5 spaced apart from each other. In order to make the force more symmetrical, the two elastic members 5 are symmetrically arranged. The second connecting portion 51 of the elastic member 5 is connected to the boss 42 of the armature 4 by gluing or welding, and the two first connecting portions 50 are connected to the outer convex plate 180 of the frame 1.

Vibration Device Example 5

Compared with the vibration device example 1, in this embodiment, the structure and installation position of the elastic member 5 are changed. The structure of the elastic member 5 in this embodiment can refer to the above-mentioned elastic member example 6 (Figure 23).

In this embodiment, the vibration device includes two groups of elastic member groups located in the installation groove 11, as shown in Figures 32 and 33, the coil 6 is installed in the installation groove 11, which is connected to the substrate 1a, and the two ends of the coil 6 are not in contact with the first frame 1c, thereby forming a space for the installation of the elastic member 5. The two groups of elastic member groups are respectively located on both sides of the coil 6 and between the coil 6 and the first frame 1c.

The two elastic members 5 of the elastic member group are symmetrically arranged up and down, and are respectively located on the upper and lower sides of the armature 4. In order to facilitate the installation of the elastic member 5, the first frame 1c is provided with an inner convex plate 181 protruding into the installation groove 11, and the inner convex plate 181 is located above the armature 4 and parallel to the armature 4. The upper elastic member 5 is located between the inner convex plate 181 and the armature 4, and its middle part (the second connecting part 51) is connected to the upper surface 43 of the armature 4, and its two ends (the first connecting part 50) are connected to the lower surface of the inner convex plate 181. The elastic member 5 located below the armature 4 is connected between the substrate 1a and the armature 4, and its middle part (the second connecting part 51) is connected to the lower surface 44 of the armature 4, and its two ends (the first connecting part 50) are connected to the upper surface of the substrate 1a.

In this embodiment, the armature 4 is in a rectangular plate shape, and both ends of the armature 4 extend outside the frame 1. In applications where the armature 4 is fixed and the frame 1 vibrates, the portion of the armature 4 protruding outside the frame 1 is used to connect to the outside.

Vibration Device Example 6

As shown in Figures 34 and 35, compared with the vibration device example 5, in this embodiment, the structure of the elastic member 5 is changed, and the installation position of the elastic member 5 is different. The structure of the elastic member 5 in this embodiment can refer to the above-mentioned elastic member example 4 (Figure 21).

The vibration device includes two groups of elastic member groups spaced apart along the length direction of the armature 4, and each group of elastic member groups includes an elastic member 5. Similar to the vibration device example 5, the elastic member 5 is located between the coil 6 and the first frame 1c. The elastic member 5 is supported below the armature 4, and the two first connecting portions 50 at both ends thereof are respectively connected to the two side surfaces of the front and rear of the substrate 1a, and the second connecting portion 51 thereof is connected to the lower surface 44 of the armature 4.

As a preferred embodiment, a first groove 1j is opened on the side of the substrate 1a, and the first connecting part 50 is arranged in the first groove 1j. The first groove 1j can position the elastic part 5 and provide a connecting surface. At the same time, the elastic part does not exceed the frame, which can reduce the volume of the vibration device.

Vibration Device Example 7

As shown in FIG. 36 and FIG. 37 , in this embodiment, the structure of the skeleton 1 of the vibration device can refer to skeleton example 6 ( FIG. 12 ), and the structure of the elastic member 5 can refer to elastic member example 1 ( FIG. 16 ).

The coil 6 is disposed in the mounting hole 12 of the frame 1 , and the bottom of the coil 6 is connected and fixed to the two substrates 1 a at the upper and lower sides.

In this embodiment, the armature 4 is in the shape of a long flat plate, and is a rectangular plate as a whole.

Two outwardly protruding plates 180 are disposed at both ends of the frame 1. The two outwardly protruding plates 180 at the same end are respectively located on both sides of the thickness direction of the armature 4 and are relatively parallel and spaced apart.

The vibration device includes two groups of elastic members connected to the two ends of the frame 1, each group of elastic members includes two elastic members 5 symmetrically arranged along the width direction of the armature 4. As shown in FIG37, the two first connecting portions 50 of the elastic member 5 are respectively connected to the side surfaces 1800 of the upper and lower outer convex plates 180, and the second connecting portion 51 is connected to the side surface 45 of the armature 4.

Since the width direction of the elastic member 5 is consistent with the length direction of the armature 4, the armature 4 is unlikely to vibrate, twist or swing in the length direction during operation.

Vibration Device Example 8

As shown in FIG. 38 , compared with the vibration device example 7, the elastic member 5 in this embodiment is arranged between the first tube body 14 and the second tube body 15 , and the skeleton 1 is not provided with an outer convex plate 180 .

The coil 6 is installed in the installation hole 12 , and its two ends are not in contact with the first tube body 14 and the second tube body 15 , leaving a space for installing the elastic member 5 .

In this embodiment, the two first connection parts 50 of the elastic member 5 are connected to the side surfaces of the upper and lower substrates 1 a , and the second connection part 51 thereof is connected to the side surface of the armature 4 .

Vibration Device Example 9

As shown in FIG39 , compared with the vibration device example 7, the structure of the skeleton 1 in this embodiment has changed. Specifically, the skeleton 1 in this embodiment can refer to the skeleton example 8 ( FIG14 ). The installation method and position of the elastic member 5 in this embodiment can refer to the vibration device example 7.

Vibration Device Example 10

40 and 41 , compared with the vibration device example 7, the structure of the elastic member 5 in this embodiment is changed, and the structure of the elastic member 5 in this embodiment can refer to the elastic member example 6 ( FIG. 23 ).

In this embodiment, the two elastic members 5 located at the same end of the vibration device are respectively located at the upper and lower sides of the armature 4. Specifically, the middle portion (second connection portion 51) of the upper elastic member 5 is connected to the upper surface 43 of the armature 4, and the two ends (first connection portion 50) are connected to the lower surface of the upper convex plate 180; the middle portion (second connection portion 51) of the lower elastic member 5 is connected to the lower surface 44 of the armature 4, and the two ends (first connection portion 50) are connected to the upper surface of the lower convex plate 180.

Vibration Device Example 11

6 and 7 , compared with the vibration device example 7, the structure of the skeleton 1 in this embodiment has changed, and the structure of the skeleton 1 in this embodiment can refer to the skeleton example 1 ( FIGS. 6 and 7 ).

In this embodiment, the frame 1 is completely surrounded and arranged outside the coil 6. Two convex convex plates 180 are arranged at both ends of the frame 1. The two convex convex plates 180 at the same end are respectively located on both sides of the armature 4 in the thickness direction and are arranged relatively parallel and spaced.

The elastic member 5 is connected between the outer convex plate 180 and the armature 4, and its connection structure can refer to the connection structure in the vibration device example 7.

Vibration Device Example 12

As shown in FIG. 42 and FIG. 43 , compared with the vibration device example 3, the structure of the elastic member 5 in this embodiment has changed. The structure of the elastic member 5 in this embodiment can refer to the elastic member example 2 ( FIG. 18 ).

The vibration device includes two groups of elastic members respectively connected to the two ends of the frame 1 , each group of elastic members includes two elastic members 5 spaced apart along the width direction of the armature 4 , and the two elastic members 5 are symmetrically arranged on both sides of the armature 4 .

As shown in FIG43 , the two first connecting portions 50 of the elastic member 5 are respectively connected to the upper and lower surfaces of the frame 1. On the surfaces 101 and 102 , the second connecting portion 51 is connected to the side surface 45 of the armature 4 .

Vibration Device Example 13

As shown in FIG. 44 and FIG. 45 , compared with the vibration device example 12, the structure of the elastic member 5 in this embodiment has changed. The structure of the elastic member 5 in this embodiment can refer to the elastic member example 1.

The vibration device includes two groups of elastic member groups, each group of elastic member groups includes two elastic members 5 symmetrically arranged on both sides of the armature 4 in the thickness direction, and the elastic members 5 are arranged horizontally.

The two front and rear end surfaces 103 of the frame 1 are both provided with a second groove 182, and the second groove 182 includes two relatively parallel mounting planes 183. The first connection portion 50 of the elastic member 5 located on the upper side is located in the second groove 182 and connected to the upper mounting plane 183, the first connection portion 50 of the elastic member 5 located on the lower side is located in the second groove 182 and connected to the lower mounting plane 183, and the second connection portions 51 of the upper and lower elastic members 5 are respectively connected to the upper surface 43 and the lower surface 44 of the armature 4. The elastic portions 52 of the upper and lower elastic members 5 are both convex in the direction away from the armature 4.

In this embodiment, since the elastic member 5 is embedded in the end surface 103 of the frame 1, the dimension of the vibration device along the length direction can be made smaller and can be further miniaturized.

Vibration Device Example 14

As shown in FIGS. 46 to 48 , in this embodiment, the structure of the skeleton 1 may refer to skeleton example 9 ( FIG. 15 ), and the structure of the elastic member 5 may refer to elastic member example 7 ( FIG. 24 ).

The vibration device includes two groups of elastic members spaced apart along the length direction of the armature 4 , each group of elastic members includes two elastic members 5 respectively connected to the upper and lower sides of the armature 4 , and the two elastic members 5 are symmetrically arranged.

The skeleton 1 is formed by connecting two second frames 1h. A through groove 105 is provided on the connecting end surface 104 connecting the two second frames 1h. The through groove 105 is used to fix the first connecting portion 50 of the elastic member 5. The second connecting portion 51 of the elastic member 5 is connected to the armature 4. As shown in Figure 48, the elastic member 5 located on the upper side is connected to the upper surface 43 of the armature 4, and the elastic member 5 located on the lower side is connected to the lower surface 44 of the armature 4.

The first connection part 50 of the elastic member 5 is located inside the frame 1, the second connection part 51 is located outside the frame 1, and the elastic part 52 is located in the gap between the armature 4 and the frame 1. By arranging the elastic part 52 to extend along the length direction of the armature 4, the length of the elastic part 52 can be made longer, so that a greater deformation can occur, thereby increasing the amplitude of the armature 4. In addition, the elastic members 5 at both ends of the frame 1 are closer to the ends of the armature 4, which can form a more stable support for both ends of the armature 4.

It is understandable that the above are only structural examples of several vibration devices, and the vibration device may have other specific embodiments based on the structural principles of the present invention.

The elastic member 5 is made of non-magnetic material to avoid affecting the polarization effect 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 spring steel sheet, etc., which has excellent fatigue resistance and drop resistance.

It can be understood that the width directions of the elastic members 5 of different groups of elastic members are not necessarily consistent. For example, the width direction of the elastic members 5 of one group of elastic members can be set along the width direction of the armature 4, and the elastic members 5 of another group can be set along the length direction of the armature 4. Therefore, when the armature 4 vibrates, the length and width directions of the armature 4 can be better limited, thereby reducing the vibration, swing or twisting of the armature 4 along its length and width directions.

In some embodiments, a protective pad 7 is further provided between the magnet and the armature 4. The protective pad 7 separates the armature 4 and the magnet, and can prevent the armature 4 from directly contacting the magnet, thereby playing a protective role. The protective pad 7 is made of non-magnetic conductive material, such as aluminum, copper, stainless steel, etc., which can prevent the armature 4 from being sucked to death due to contact with the magnet under certain extreme conditions. The protective pad 7 can be made of hard material or flexible material. As a preferred embodiment, the protective pad 7 is made of flexible material, such as silica gel, rubber, etc., which can play a buffering role and prevent the armature 4 from directly colliding with the magnet under extreme conditions, causing damage to the armature 4 or the magnet. By providing the protective pad 7, the vibration device can still maintain good working performance when it falls, is hit or works abnormally, thereby improving the reliability of the vibration device.

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

As a preferred embodiment, as shown in FIG. 7 , a protective pad 7 is provided on the surface of the two first magnets 20 and the two second magnets 30 facing the armature 4. In this way, in the event of an abnormal situation, such as falling, impact, etc., even if the armature 4 is displaced to a large extent, it will only contact the protective pad 7 and will not be attracted by the magnet, thereby effectively protecting the magnet and the armature 4 and further improving the anti-fall performance of the product.

In addition to being set on the magnet, the protection pad 7 can also be set on the armature 4. As shown in Figure 49, the areas on the upper surface 43 and the lower surface 44 of the armature 4 corresponding to the magnet are both provided with protection pads 7, which can also play a protective function against suction.

Obviously, the protection pad 7 can also be arranged on the magnet and the armature 4 at the same time.

In some embodiments, the coil 6 is relatively fixed to the skeleton 1. In this case, the coil 6 can be connected to one of the skeleton 1 and the magnet to achieve relative fixation with the skeleton 1. The coil 6 is wrapped around the outside of the armature 4 and does not contact it to prevent it from hindering the vibration of the armature 4. In other embodiments, the coil 6 is relatively fixed to the armature 4. In this case, the coil 6 is wrapped around the outside of the armature 4 and connected to the armature 4. A certain gap is retained between the coil 6 and the skeleton 1 and the magnet, and the coil 6 can vibrate with the armature 4. The two methods of connecting the coil 6 to the skeleton 1 and the coil 6 to the armature 4 can achieve different frequency response curves. When used, the method of fixing the skeleton 1 or fixing the armature 4 can also achieve different response curves, so that the product has richer performance to meet different needs.

The present invention also provides a receiver, which comprises the vibration device mentioned above.

The structure of the receiver is further described in detail below using several examples.

Receiver Example 1

As shown in FIGS. 50 to 54 , in this example, the receiver includes a housing 80 , a diaphragm assembly 81 , a driving rod 82 and a vibration device 83 .

The outer shell 80 includes a first shell 800 and a second shell 801 . The first shell 800 and the second shell 801 are both shell-like structures with one end open. The open ends of the two are connected to form an inner cavity for accommodating the diaphragm assembly 81 , the driving rod 82 and the vibration device 83 .

The first housing 800 is located above the second housing 801. The diaphragm assembly 81 includes an annular frame 810 connected to the inner wall of the first housing 800, a movable plate 816 movably disposed in the annular frame 810, and a film 812 connecting the annular frame 810 and the movable plate 816. The film 812 is covered and connected to the upper surface of the annular frame 810, and the movable plate 816 is connected to the upper surface of the film 812. The size of the movable plate 816 is smaller than that of the annular frame 810, and there is a gap between it and the annular frame 810, so that it can vibrate in the inner hole area of the annular frame 810, and the film 812 covers the gap.

The diaphragm assembly 81 divides the inner cavity of the shell 80 into a front cavity 80a and a rear cavity 80b. The end face of the first shell 800 is provided with a sound outlet hole 802 which communicates with the front cavity 80a. When the movable plate 816 vibrates, it agitates the air in the front cavity 80a to vibrate and emits sound through the sound outlet hole 802.

The vibration device 83 is arranged in the rear cavity 80b, and is fixed on the second shell 801. In this embodiment, the skeleton 1 of the vibration device 83 includes a first tube body 14 and a second tube body 15 arranged at intervals along the length direction of the armature 4. The first tube body 14 and the second tube body 15 are both connected to the second shell 801. The second shell 801 is made of soft magnetic material to achieve a magnetic connection between the two tube bodies. It can be understood that the second shell 801 can also be understood as the outer edge of the substrate 1a in the skeleton example 5 above is deformed upward.

The first magnet assembly 2 and the second magnet assembly 3 are respectively arranged in the first tube body 14 and the second tube body 15. In this embodiment, the magnetization directions of the two sets of magnet assemblies are opposite, so that the two ends of the armature 4 can vibrate up and down synchronously. The coil 6 is connected to the frame 1 and is used to drive the armature 4 to vibrate. The two ends of the frame 1 are provided with elastic members 5 connected to the frame 1 and the armature 4 to provide a reset force.

It can be understood that since the armature 4 can perform translational vibration up and down as a whole, there are fewer restrictions on the installation position and number of the drive rods 82. Preferably, the number of drive rods 82 is at least two, which are arranged at intervals along the length direction of the armature 4 so that the armature 4 can reliably drive the movable plate 816 to perform translational vibration.

In this embodiment, both ends of the armature 4 extend out of the frame 1, and the driving rod 82 is connected between the end of the armature 4 and the movable plate 816. There are two driving rods 82, and each end of the armature 4 is connected with a driving rod 82. When the armature 4 vibrates under the drive of the coil 6, the armature 4 drives the movable plate 816 to move up and down through the driving rod 82, thereby agitating the air to produce sound.

Receiver Example 2

As shown in Figures 55 to 57, compared with the receiver example 1, in this example, the housing 80 does not include the second housing 801 (it can also be understood that the second housing 801 is deformed into a flat plate shape). The skeleton 1 of the vibration device 83 can refer to the skeleton example 4, but in this example, the substrate 1a of the skeleton 1 extends outward to the outside of the tube body, and the first housing 800 of the housing 80 is connected to the outer edge of the substrate 1a to form an inner cavity.

In this example, the diaphragm assembly 81 is also connected to the diaphragm assembly 81 through two driving rods 82 located outside the two skeletons 1 to achieve driving of the diaphragm assembly 81 .

Receiver Example 3

As shown in FIG. 58 and FIG. 59 , the main difference between this example and receiver example 2 is that the structure of the skeleton 1 is different.

In this example, the structure of the skeleton 1 can refer to the skeleton example 7, the main difference being that in this example, the base plate 1a of the skeleton 1 is in the shape of a rectangular plate, which extends outward to the outside of the tube body, the first shell 800 is connected to the outer edge of the base plate 1a, and the elastic member 5 is arranged below the armature 4. In addition, in this example, the skeleton 1 is not provided with an outer convex plate 180.

Receiver Example 4

As shown in FIG. 60 and FIG. 61 , the main difference between this example and the receiver example 3 is that, in this example, the structure of the diaphragm assembly 81 and the installation position and number of the driving rods 82 are changed.

In this example, the diaphragm assembly 81 includes an annular frame 810 connected to the inner wall of the first shell 800, a vibration plate 811, and a film 812 connecting the annular frame 810 and the vibration plate 811. The film 812 covers the annular frame 810, and the vibration plate 811 is connected to the film 812. The vibration plate 811 includes an annular outer frame 815, a movable plate 816 arranged in the outer frame 815, and a hinge 813 arranged at one end of the movable plate 816. The outer frame 815 of the vibration plate 811 is correspondingly arranged above the annular frame 810, and the outer edge of the film 812 is sandwiched between the two. The size of the movable plate 816 is smaller than the size of the annular frame 810, one end of which is connected to the outer frame 815 by two hinges 813, and the other end is suspended relative to the outer frame 815 and the annular frame 810, and can vibrate relative to the annular frame 810 through the elastic deformation of the hinge 813. Except for the portion connected by the hinge 813 , there is a gap between the outer periphery of the movable panel 816 and the outer frame 815 , and the film 812 covers the gap.

The coil 6 is located between the two tubes, and there is a gap between it and one of the tubes. In the embodiments shown in Figures 60 and 61, there is a gap between the coil 6 and the first tube 14. There is one driving rod 82, which is arranged in the gap between the coil 6 and the first tube 14. The driving rod 82 is arranged vertically, one end of which is connected to the armature 4, and the other end passes through the through hole 19 provided in the skeleton 1 and is connected to the movable plate 816 of the vibration plate 811. When the armature 4 vibrates, the driving rod 82 drives the movable plate 816 to vibrate, thereby stirring the air to make a sound. Preferably, relative to the hinge 813, the connection between the driving rod 82 and the movable plate 816 is closer to the suspended end of the movable plate 816.

Furthermore, in this example, the structure of the elastic member 5 can refer to the elastic member example 5, and the installation method thereof can refer to the vibration device example 4.

Receiver Example 5

As shown in FIGS. 62 and 63 , compared with the receiver example 4, in this example, the vibration device 83 includes two coils 6 , and the drive rod 82 is disposed in the middle of the armature 4 and between the two coils 6 .

The two coils 6 of the vibration device 83 are arranged at intervals along the length direction of the armature 4, and are respectively fitted with the end faces of the first magnet assembly 2 and the second magnet assembly 3. The coil 6 can be fixedly connected to the frame 1 or the magnet by gluing or other means. One end of the driving rod 82 is connected to the middle part of the armature 4, and the other end passes through the through hole 19 on the frame 1 and is connected to the vibration plate 811.

Receiver Example 6

As shown in Figures 64 and 65, in this example, the receiver includes a housing 80, a diaphragm assembly 81, a driving rod 82, and a vibration device 83. The housing 80 includes a first shell 800 with one end opened.

The structure of the vibration device 83 can refer to the structure of the vibration device described in the vibration device example 1, the main difference being that in this example, the substrate 1a extends outward, and the first shell 800 is connected to the outer edge of the substrate 1a. Thus, an inner cavity for accommodating other components is formed, and a relief groove 1k is provided on the substrate 1a to accommodate part of the coil 6. The relief groove 1k can play a role in positioning the coil 6 and make the volume of the coil 6 larger.

In this example, similar to the receiver example 3, the elastic member 5 is disposed below the armature 4 .

The structure of the diaphragm assembly 81 can refer to the structure of the diaphragm assembly in the receiver example 1. In this example, the diaphragm assembly 81 is also driven to vibrate and produce sound by two driving rods 82 located on the outside of the skeleton 1.

Receiver Example 7

As shown in Figures 66 and 67, compared with the receiver example 6, in this example, the number of the driving rod 82 is one, and it is located between the first tube 14 and the coil 6. The structure of the diaphragm assembly 81 can refer to the receiver example 4. In this example, since there is no frame 1 blocking the coil 6, there is no need to open a through hole on the frame 1 for the driving rod 82 to pass through.

Receiver Example 8

It is understandable that when the vibration device 83 is used, it is not limited to fixing the frame 1 to make the armature 4 vibrate, but the armature 4 can also be fixed to make the frame 1 vibrate.

As shown in FIGS. 68 to 70 , in this example, the receiver includes a housing 80 , a diaphragm assembly 81 and a vibration device 83 .

The shell 80 is made of non-magnetic material and includes a first shell 800 and a second shell 801. The first shell 800 and the second shell 801 are both shell-like structures with one end open. The open ends of the two are connected 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. The structure of the diaphragm assembly 81 can refer to the structure of the diaphragm assembly in the above-mentioned receiver example 1, which includes an annular frame 810 connected to the inner wall of the first housing 800, a movable plate 816 movably arranged in the annular frame 810, and a film 812 connecting the annular frame 810 and the movable plate 816. The size of the movable plate 816 is smaller than that of the annular frame 810, so that it can vibrate in the inner hole area of the annular frame 810. There is a gap between the outer periphery of the movable plate 816 and the annular frame 810, and the film 812 covers the gap.

The diaphragm assembly 81 divides the inner cavity of the shell 80 into a front cavity 80a and a rear cavity 80b. The end face of the first shell 800 is provided with a sound outlet hole 802 which communicates with the front cavity 80a. When the movable plate 816 vibrates, it agitates the air in the front cavity 80a to vibrate and emits sound through the sound outlet hole 802.

The structure of the vibration device 83 can refer to the vibration device example 10, and the two ends of the armature 4 extend to the outside of the frame 1 and are fixedly connected between the first shell 800 and the second shell 801. When electricity is supplied, since the armature 4 is fixed, the whole structure consisting of the frame 1 , the magnet assembly and the coil 6 will vibrate relative to the armature 4 .

The movable plate 816 and the film 812 are provided with a protrusion 814 protruding toward the vibration device 83. The protrusion 814 is connected to the upper surface 101 of the frame 1. After the frame 1 vibrates, it drives the movable plate 816 to vibrate, thereby actuating the air to vibrate and produce sound.

The receiver described in this embodiment has a frame 1, a magnet and a coil 6 that vibrate relative to the housing 80, and the vibration mass is large, which can produce a stronger vibration and achieve high-quality bone conduction sound transmission. In other words, the receiver can transmit sound through bone conduction and air conduction at the same time, and can meet the needs of people with normal hearing and people with damaged eardrums.

Receiver Example 9

This example discloses a receiver having a dual diaphragm.

As shown in Figures 71 to 73, the receiver includes a housing 80, two diaphragm assemblies 81, two driving rods 82 and a vibration device 83.

The outer shell 80 includes a first shell 800 and a second shell 801. The first shell 800 and the second shell 801 are both shell-like structures with one end open. The open ends of both are connected to the substrate 1a of the vibration device 83, thereby forming an inner cavity for accommodating the diaphragm assembly 81, the driving rod 82 and the vibration device 83.

The first housing 800 is located above the second housing 801, and the two diaphragm assemblies 81 are respectively connected to the inner walls of the first housing 800 and the second housing 801. The specific structure of the diaphragm assembly 81 can refer to the receiver example 4.

The two diaphragm assemblies 81 divide the inner cavity of the housing 80 into two front cavities 80a and a rear cavity 80b located between the two front cavities 80a. The front cavity 80a is formed between the diaphragm assembly 81 and the housing 80, and the rear cavity 80b is formed between the two diaphragm assemblies 81. The end surface of the first housing 800 is provided with a sound outlet 802 communicating with the upper front cavity 80a, and the end surface of the second housing 801 is provided with a sound outlet 802 communicating with the lower front cavity 80a. When the two movable plates 816 vibrate, they agitate the air in the upper and lower front cavities 80a to vibrate, and sound is emitted through the two sound outlets 802. The two sound holes 802 are provided on the same end face of the shell 80. The shell 80 also includes a sound outlet tube 803 covered on the end face. The sound outlet tube 803 covers the two sound outlet holes 802 at the same time. A sound outlet 804 is provided at one end of the sound outlet tube 803. The sounds emitted from the two sound outlet holes 802 converge in the sound outlet tube 803 and are emitted from the sound outlet 804.

The two diaphragm assemblies 81 are centrally symmetrically arranged, and the two hinges 813 of the two diaphragm assemblies 81 are respectively located at At both ends, in this embodiment, the hinge 813 of the upper diaphragm assembly 81 is located at the right end, and the hinge 813 of the lower diaphragm assembly 81 is located at the left end.

The vibration device 83 is disposed in the rear cavity 80b and is fixed to the housing 80. In this embodiment, the frame 1 of the vibration device 83 can refer to the frame example 3, which includes a base plate 1a and two U-shaped connecting frames 1b, and the two connecting frames 1b are both opened downward and connected to the base plate 1a. The base plate 1a extends outward to connect to the housing 80, as shown in Figures 71 and 72, and the first shell 800 and the second shell 801 are respectively connected to the upper and lower surfaces of the base plate 1a.

The first magnet assembly 2 and the second magnet assembly 3 of the vibration device 83 have the same magnetization direction. In the embodiment shown in FIG. 72 , the two first magnets 20 and the two second magnets 30 are all arranged with the N pole at the top and the S pole at the bottom. When the coil 6 is energized, the two ends of the armature 4 will be subjected to electromagnetic forces in opposite directions, thereby performing swing vibration. In other embodiments, the two first magnets 20 and the two second magnets 30 can be arranged with the S pole at the top and the N pole at the bottom.

The coil 6 is sleeved on the armature 4 and fixed relatively to the frame 1. As a preferred embodiment, a avoidance hole 190 is opened on the substrate 1a at a position corresponding to the coil 6. The avoidance hole 190 accommodates part of the coil 6, which can not only position the coil 6 and improve the firmness of the connection between the coil 6 and the frame 1, but also make the volume of the coil 6 larger, thereby increasing the driving force.

Both ends of the armature 4 extend to the outside of the frame 1, and two driving rods 82 are respectively connected to both ends of the armature 4, and one of the driving rods 82 extends upward to be connected to the movable plate 816 of the upper diaphragm assembly 81, and the other driving rod 82 passes downward through the through hole 19 on the substrate 1a to be connected to the movable plate 816 of the lower diaphragm assembly 81. The driving rod 82 is connected to the end of the movable plate 816 away from the hinge 813, so as to facilitate driving the movable plate 816 to vibrate.

The structure and installation method of the elastic member 5 in this embodiment can refer to the vibration device example 1.

Since the two ends of the armature 4 always move in opposite directions, the vibration directions of the two movable plates 816 driven by it are always opposite. Since the vibration directions of the two diaphragm assemblies 81 are opposite, the vibrations transmitted to the housing 80 are offset, which can greatly reduce the vibrations generated when the receiver is working, making the operation more stable and reliable, which is conducive to improving the acoustic effect of the receiver and reducing the impact of vibration on the performance and user experience of the product. In addition, the two diaphragm assemblies 81 vibrate and sound at the same time, which can effectively increase the sound pressure level of the receiver.

It is understandable that the above are only structural examples of several types of receivers, and the receiver may have other specific embodiments based on the structural principles of the present invention.

The present invention also provides an electronic device, which includes the vibration device or receiver described above. The electronic device can be, for example, a head-mounted electronic device such as headphones, a smart helmet, smart glasses, etc., but is certainly not limited to a head-mounted electronic device.

Taking the electronic device as headphones as an example, when the vibration device 83 is set to fix the armature 4 and the skeleton 1 vibrates, the vibration of the skeleton 1 can be transmitted to the headphone shell, and then transmitted to the facial skin by the headphone shell, thereby realizing bone conduction sound transmission. At this time, the diaphragm assembly 81 can also be set at the same time. The diaphragm assembly 81 is driven to vibrate by the skeleton 1, and can realize air conduction and bone conduction sound transmission at the same time, meeting the needs of different user groups.

When the vibration device 83 is arranged so that the frame 1 is fixed and the armature 4 vibrates, a diaphragm assembly 81 may be arranged, and the armature 4 drives the diaphragm assembly to vibrate, thereby realizing air conduction sound transmission.

The above are only specific embodiments of the present invention, and any other improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims (15)

1. A vibration device, characterized in that it comprises:

   Skeleton (1);

   A first magnet assembly (2) comprising two first magnets (20) arranged relatively to each other at an interval, the two first magnets (20) being relatively fixed to the frame (1), and the magnetization directions of the two first magnets (20) being the same;

   A second magnet assembly (3) comprising two second magnets (30) arranged relatively to each other at an interval, the two second magnets (30) being fixed relatively to the frame (1), and the magnetization directions of the two second magnets (30) being the same;

   an armature (4), which is inserted between the two first magnets (20) and the two second magnets (30), and has a separation space (40) between the first magnets (20) and the second magnets (30);

   an elastic member (5), connected between the armature (4) and the frame (1), and used for driving the armature (4) to restore a balanced state; and

   The coil (6) is used to polarize the armature (4) so that the armature (4) and the frame (1) vibrate relative to each other under the action of the magnetic fields of the first magnet assembly (2) and the second magnet assembly (3).
2. The vibration device according to claim 1 is characterized in that the first magnet (20) and the second magnet (30) are both arranged at intervals along the vibration direction, the first magnet (20) and the second magnet (30) are both magnetized along the vibration direction, the magnetization directions of the first magnet (20) and the second magnet (30) are opposite or the same, and the vibration direction is the direction of relative vibration of the armature (4) and the skeleton (1).
3. The vibration device according to claim 1, characterized in that 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).
4. The vibration device according to claim 3, characterized in that the coil (6) and the frame (1) are relatively fixed; or

   The coil (6) and the armature (4) are relatively fixed.
5. The vibration device according to claim 3 is characterized in that the frame (1) and the electric The armature (4) is made of soft magnetic material. When the coil (6) is energized, the portion of the armature (4) located inside the first magnet assembly (2) and the second magnet assembly (3) is polarized into two poles with opposite polarities, and a magnetic circuit is formed through the frame (1).
6. The vibration device according to claim 5, characterized in that the two first magnets (20) are both connected to the frame (1) and form a magnetic circuit through the frame (1);

   The two second magnets (30) are both connected to the frame (1), and a magnetic circuit is formed through the frame (1).
7. The vibration device according to claim 1 is characterized in that the two first magnets (20) are both plate-shaped and arranged in parallel; the two second magnets (30) are both plate-shaped and arranged in parallel; the armature (4) is plate-shaped and arranged in parallel with the first magnet (20) and the second magnet (30), and the thickness direction of the armature (4) is consistent with the vibration direction.
8. The vibration device according to claim 1 is characterized in that it also includes a protective pad (7), wherein the protective pad (7) is made of non-magnetic material and is used to separate the armature (4) and the first magnet (20) and the armature (4) and the second magnet (30).
9. The vibration device according to any one of claims 1 to 8 is characterized in that the skeleton (1) is provided with a receiving channel (10), and the first magnet assembly (2) and the second magnet assembly (3) are arranged at intervals along the axis of the receiving channel (10), and are both connected to the inner wall of the receiving channel (10).
10. The vibration device according to any one of claims 1 to 8, characterized in that the elastic member (5) 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).
11. The vibration device according to claim 10 is characterized in that the elastic member (5) is made of non-magnetic material and is made by bending a spring sheet, and the elastic member (5) includes two first connecting parts (50) respectively located at both ends, and the two first connecting parts (50) are respectively located on both sides of the armature (4), or are arranged opposite to the second connecting part (51) at intervals along the vibration direction.
12. The vibration device according to any one of claims 1 to 8, characterized in that it comprises two groups of elastic members spaced apart along the length direction of the armature (4);

    Each group of elastic members includes one elastic member (5); or,

    Each group of elastic members comprises two elastic members (5), and the two elastic members (5) are respectively arranged on both sides of the armature (4) in the thickness direction or on both sides in the width direction.
13. A receiver, characterized by comprising the vibration device according to any one of claims 1 to 12.
14. The receiver according to claim 13, characterized in that the receiver comprises a housing (80) and a diaphragm assembly (81) disposed in the housing (80);

    The frame (1) of the vibration device is relatively fixed to the housing (80), and the armature (4) drives the diaphragm assembly (81) to vibrate; or,

    The armature (4) of the vibration device is relatively fixed to the housing (80), and drives the diaphragm assembly (81) to vibrate through the frame (1).
15. An electronic device, characterized in that it comprises the vibration device according to any one of claims 1 to 12, or the receiver according to claim 13 or 14.