WO2021103527A1

WO2021103527A1 - Vibration exciter for electronic product and electronic product

Info

Publication number: WO2021103527A1
Application number: PCT/CN2020/099507
Authority: WO
Inventors: 毛东升; 高志明; 高文花
Original assignee: 歌尔股份有限公司
Priority date: 2019-11-25
Filing date: 2020-06-30
Publication date: 2021-06-03
Also published as: CN110996228B; CN110996228A

Abstract

Disclosed are a vibration exciter for an electronic product and an electronic product. The exciter comprises a first vibration assembly, a second vibration assembly and a coil. The first vibration assembly comprises a first basin frame and a first magnet, and the first magnet is provided in the first basin frame. The second vibration assembly comprises a second basin frame and a magnet ring, and a boss is provided in the second basin frame. The magnet ring is sleeved on the boss. The coil is fixedly provided between the first magnet and the magnet ring, and the lead end and the outlet end of the coil are both located at the outer edge of the coil. The provision of the boss reduces the relative area of the first magnet and the magnet ring, and weakens the force acting therebetween; in addition, the lead end and the outlet end of the coil are both located at the outer edge of the coil so as to facilitate the leading and connection of the coil. The electronic product has good acoustic performance.

Description

Vibration exciter for electronic product and electronic product

Technical field

The present invention relates to the technical field of electro-acoustic conversion. Specifically, the present invention relates to a vibration exciter for electronic products and electronic products.

Background technique

In mainstream mobile phone calls, RCV is the main voice, but under the trend of full-screen popularity, the application of non-porous screen voice has become a major problem in current technical research. The development of screen sound exciters has greatly promoted the development of mobile phones in the direction of full screens.

Existing exciters usually include a basin frame, a magnet, and a coil. The structure is simple, easy to produce, and has high development prospects and practical value. However, during the installation process, because the two parts of the product are magnetized, there will be repulsive forces, the installation is not easy to center, and there will also be the use of magnetic lines of force. The problem is not high.

Summary of the invention

An object of the present invention is to provide a vibration exciter for electronic products and electronic products.

According to the first aspect of the present invention, there is provided a vibration exciter for electronic products, including:

A first vibration assembly, the first vibration assembly includes a first basin frame and a first magnet, and the first magnet is arranged in the first basin frame;

The second vibration component, the second vibration component includes a second basin frame and a magnetic ring, the inner bottom surface of the second basin frame is provided with a boss extending in the direction of the first vibration component, the magnetic ring Sleeved on the boss, the magnetizing direction of the magnetic ring is parallel to the axial direction of the boss;

The coil is fixedly arranged between the first magnet and the magnetic ring, the axial direction of the coil is parallel to the axial direction of the boss, and the lead end and the outlet end of the coil are both located in the At the outer edge of the coil.

Optionally, the coil is fixedly arranged on the first vibration component.

Optionally, the second basin frame has a side wall, and the magnetic ring is located in the side wall.

Optionally, the top end of the boss protrudes from the end surface of the magnetic ring.

Optionally, the magnetizing direction of the first magnet is parallel to the axial direction of the boss.

Optionally, the opposite magnetic poles of the first magnet and the magnetic ring have the same polarity.

Optionally, the boss is made of a magnetically conductive material.

Optionally, the coil is configured to be wound by an alpha winding method, the middle section of the wire used to form the coil is located in the inner circle of the coil, and both ends of the wire are located in the coil The outer ring.

Optionally, the lead end and the outlet end are located on opposite sides of the coil.

According to the second aspect of the present invention, there is provided an electronic product, including:

An electronic product main body and a sound-producing component, the sound-producing component being connected to the electronic product main body in a vibrable form;

In the vibration exciter, the first vibration component is provided on the main body of the electronic product, and the second vibration component is provided on the sound-producing component; or, the first vibration component is provided on the sound-producing component Above, the second vibration component is arranged on the main body of the electronic product;

The vibration exciter is configured to drive the sound component to vibrate and produce sound relative to the main body of the electronic product.

One technical effect of the present invention is:

The invention discloses a vibration exciter for electronic products, which includes a first vibration component, a second vibration component and a coil. The lead end and the outlet end of the coil are both located at the outer edge of the coil, which is convenient for lead and Bonding.

Through the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear.

Description of the drawings

The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present invention, and together with the description thereof, serve to explain the principle of the present invention.

Figure 1 is a schematic diagram of the structure of an exciter of the present invention;

Figure 2 is a cross-sectional view of an exciter of the present invention;

Figure 3 is a schematic structural diagram of a second basin frame of the present invention;

4 is a schematic diagram of the structure of a magnetic ring of the present invention;

Figure 5 is a schematic diagram of the structure of a coil lead of the present invention;

Fig. 6 is a schematic diagram of the application of an exciter of the present invention on electronic products;

Fig. 7 is a schematic diagram of the application of an exciter of the present invention to electronic products.

Among them: 1-first basin frame; 2-first magnet; 3-second basin frame; 4-magnetic ring; 5-coil; 6-boost; 7-lead end; 8-outlet end; 9-exciter ; 10-The main body of the electronic product; 11-The sound component.

Detailed ways

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use.

The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the specification.

In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiment may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.

1 and 2, the present invention discloses a vibration exciter 9 for electronic products, including:

The first vibration component, the second vibration component and the coil 5, the first vibration component includes a first basin frame 1 and a first magnet 2, the first magnet 2 is arranged in the first basin frame 1, a In a specific embodiment, the first basin frame 1 may have an opening at one end to form a cavity, and the first magnet 2 is arranged in the cavity; the second vibrating assembly includes a second basin frame 3 and a magnet. Ring 4, the inner bottom surface of the second basin frame 3 is provided with a boss 6 extending toward the direction of the first vibrating assembly, and the boss 6 can be arranged on the inner bottom surface of the second basin frame 3. The center can also be set at an eccentric position, which is specifically determined according to the overall structure and function of the exciter 9; the magnetic ring 4 is sleeved on the boss 6, and the magnetizing direction of the magnetic ring 4 is parallel to The axial direction of the boss 6; the coil 5 is fixedly arranged between the first magnet 2 and the magnetic ring 4, the axial direction of the coil 5 is parallel to the axial direction of the boss 6, so The lead end 7 and the outlet end 8 of the coil 5 are both located at the outer edge of the coil 5.

The boss 6 can be stamped and formed by the second basin frame 3, or the boss 6 and the second basin frame 3 are integrally formed, or the boss 6 and the second basin frame 3 are separate The body structure is not limited by the present invention.

The arrangement of the boss 6 reduces the relative area of the first magnet 2 and the magnetic ring 4 and weakens the force between the two, and the magnetizing direction of the magnetic ring 4 is parallel to the direction of the boss 6 In the axial direction, the force between the first magnet 2 and the magnetic ring 4 is further cancelled, and the reliability of the exciter 9 is improved.

In addition, the lead end 7 and the outlet end 8 of the coil 5 are both located at the outer edge of the coil 5, which avoids the difficulty of lead wire caused by the start and end wires of the ordinary winding coil in the inner coil. And the problem of inconvenient bonding. Specifically, when the coil needs to be energized, the beginning and end of the coil should be drawn out. If the beginning and end of the coil are always attached to the inner surface of the coil and fixed with glue, this will not only increase the overall height of the coil, but also In the follow-up line, it is easy to have problems such as insufficient initial line tension and deviation of glue application.

Optionally, the coil 5 is fixedly arranged on the first vibration component. The coil 5 is fixedly arranged between the first magnet 2 and the magnetic ring 4. In an embodiment of the present invention, the coil 5 may be arranged on the first vibration component and the second vibration component. Between the components, the coil 5 can be fixed on any opposite surface of the first vibration component and the second vibration component.

In a specific embodiment of the present invention, fixing the coil 5 on the first vibration component can prevent the displacement of the coil 5 caused by the first vibration component and the second vibration component during the vibration process. The coil 5 is stably confined in the space where the first vibrating component and the second vibrating component are opposite, which improves the stability of the overall structure.

3 and 4, optionally, the second basin frame 3 has a side wall, and the magnetic ring 4 is located in the side wall. The inner bottom surface of the second basin frame 3 is provided with a boss 6 extending in the direction of the first vibration assembly, and the magnetic ring 4 is sleeved on the boss 6, so that the magnetic The ring 4 is restricted around the boss 6. In this case, in order to simplify the structure of the second basin frame 3, the second basin frame 3 can be set to have a structure with only the bottom surface and the boss 6; if in order to provide a more stable structure for the magnetic ring 4, the second basin frame 3 can be set to a more stable structure. The basin frame 3 is provided with side walls.

In a specific embodiment of the present invention, a side wall for restricting the circumferential movement of the magnetic ring 4 is provided on the second basin frame 3, so that the structural stability of the magnetic ring 4 is further ensured.

Optionally, the top end of the boss 6 protrudes from the end surface of the magnetic ring 4. In the present invention, the length of the boss 6 can be shorter, and it can only limit the displacement of the magnetic ring 4, or it can be set to be relatively long, so that the top of the boss 6 is from the position of the magnetic ring 4. The end face extends, which not only further restricts the movement of the magnetic ring 4, but also avoids the contact damage between the magnetic ring 4 and the first vibrating component. Specifically, the distance that the top end of the boss 6 protrudes from the end face of the magnetic ring 4 can be determined according to the actual structure and function of the exciter 9, for example, when the protruding distance is 0, that is, the top end of the boss 6 It is flush with the end surface of the magnetic ring 4, or the protruding distance is 5%-20% of the length of the boss 6, which is not further limited by the present invention.

Optionally, the magnetizing direction of the first magnet 3 is parallel to the axial direction of the boss 6. In the present invention, the magnetizing direction of the magnetic ring 4 is parallel to the axial direction of the boss 6, and the magnetizing direction of the first magnet 3 directly affects the first magnet 3 and the magnetic ring 4. The magnitude of the force therebetween further affects the magnitude of the relative vibration between the first vibrating component and the second vibrating component. When the magnetizing direction of the first magnet 3 intersects the axial direction of the boss 6, the force between the first magnet 3 and the magnetic ring 4 is small, and the first magnet 3 When the magnetizing direction is parallel to the axial direction of the boss 6, the force between the first magnet 3 and the magnetic ring 4 is greatly increased. A larger vibration space is provided for the vibrating component of the exciter 9.

Optionally, the opposite magnetic poles of the first magnet 2 and the magnetic ring 4 have the same polarity. In the present invention, the opposite magnetic poles of the first magnet 2 and the magnetic ring 4 are set to have the same polarity, which can provide a certain repulsive force to the first vibrating assembly and the second vibrating assembly, and a part of the repulsive force is weakened on the boss 6. Based on the repulsive force, the coil 5 can further balance the repulsive force of the first vibration component and the second vibration component to provide a stable output for the entire exciter 9.

Optionally, the boss 6 is made of a magnetically conductive material. Setting the boss 6 as a magnetic material can prevent the traditional two identical magnetic cakes from magnetically, the magnetic field strength is mainly concentrated around the basin frame, the magnetic line of induction of the magnetic pole in the middle rarely passes through the coil, providing a large magnetic repulsion force The problem. Larger repulsive force will cause excessive vibration of the device connected to the exciter 9 and cause damage to the device, and the boss 5 made of magnetically conductive material just weakens this magnetic repulsive force.

The boss 6 is set as a magnetic material, on the one hand, it reduces the area between the first magnet 2 and the magnetic ring 4, and on the other hand, it can play a role in concentrating magnetism, increasing the magnetic circuit and attracting the second side A magnetic field line of the magnet 2 can increase the magnetic induction intensity passing through the coil 5, thereby increasing the electromagnetic force. The common effect is to reduce the repulsive force between the first vibration component and the second vibration component, and improve the application range and reliability of the exciter 9. The structure of the boss 6 is not limited to a physical structure, and may also be a hollow structure of the housing, which is not limited in the present invention.

Referring to FIG. 5, optionally, the coil 5 is configured to be wound by an alpha winding method, and the middle section of the wire used for winding to form the coil 5 is located in the inner circle of the coil 5. The two ends of are located on the outer ring of the coil 5. The middle section of the wire used for winding the coil 5 is located in the inner circle of the coil 5 to protect the middle coil 5 from contact damage from the external structure, and more importantly, the two ends of the wire are located on the coil 5. The outer ring can facilitate the lead-in and lead-out of the coil 5 and fix it with glue, and no connection point is provided on the side of the coil, so the overall height of the coil 5 will not be increased.

Optionally, the start end of the lead end 7 and the end of the outlet end 8 are located on opposite sides of the coil 5. Since the start end of the lead end 7 and the end of the outlet end 8 need to be connected to external equipment, and the coil structure is small, positioning the start end of the lead end 7 and the end of the outlet end 8 on opposite sides of the coil 5 can avoid The mutual interference between the two operations improves the convenience of coil connection.

The invention also discloses an electronic product, including:

An electronic product main body 10 and a sounding component 11, the sounding component 11 being connected to the electronic product main body 10 in a vibrable form;

In the above-mentioned vibration exciter 9, the first vibration component is arranged on the electronic product main body 10, and the second vibration component is arranged on the sound component 11;

Alternatively, the first vibration component is provided on the sound emitting component 11, and the second vibration component is provided on the electronic product main body 10;

The vibration exciter 9 is configured to drive the sound component 11 to vibrate and sound relative to the electronic product main body 10.

Optionally, the electronic product includes one of a mobile phone, a tablet computer, an e-book reader, an MP3 player, an MP4 player, a computer, a set-top box, a smart TV, and a wearable device.

6 and 7, in an embodiment of the present invention, the exciter 9 is applied to a battery product, specifically the first vibration component is provided on the electronic product main body 10, and the second vibration The components are arranged on the sound emitting component 11, and the exciter 9 can significantly improve the acoustic performance of the electronic product.

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims

A vibration exciter (9) for electronic products, characterized in that it comprises:

A first vibration assembly, the first vibration assembly includes a first basin frame (1) and a first magnet (2), and the first magnet (2) is arranged in the first basin frame (1);

The second vibration component, the second vibration component includes a second basin frame (3) and a magnetic ring (4), the inner bottom surface of the second basin frame (3) is provided with a direction facing the first vibration component An extended boss (6), the magnetic ring (4) is sleeved on the boss (6), and the magnetizing direction of the magnetic ring (4) is parallel to the axial direction of the boss (6) ；

The coil (5), the coil (5) is fixedly arranged between the first magnet (2) and the magnetic ring (4), and the axis of the coil (5) is parallel to the boss (6) ) Axial direction, the lead end (7) and the outlet end (8) of the coil (5) are both located at the outer edge of the coil (5).
The vibration exciter (9) according to claim 1, wherein the coil (5) is fixedly arranged on the first vibration component.
The vibration exciter (9) according to claim 1, wherein the second basin frame (3) has a side wall, and the magnetic ring (4) is located in the side wall.
The vibration exciter (9) according to claim 1, wherein the top end of the boss (6) protrudes from the end surface of the magnetic ring (4).
The vibration exciter (9) according to claim 1, wherein the magnetizing direction of the first magnet (2) is parallel to the axial direction of the boss (6).
The vibration exciter (9) according to claim 5, characterized in that the opposite magnetic poles of the first magnet (2) and the magnetic ring (4) have the same polarity.
The vibration exciter (9) according to claim 1, wherein the boss (6) is made of a magnetically conductive material.
The vibration exciter (9) according to claim 1, wherein the coil (5) is configured to be wound by an alpha winding method for winding the wire forming the coil (5) The middle section is located in the inner circle of the coil (5), and both ends of the wire are located in the outer circle of the coil (5).
The vibration exciter (9) according to claim 1, wherein the lead end (7) and the outlet end (8) are located on opposite sides of the coil (5).
An electronic product, characterized in that it includes:

An electronic product main body (10) and a sounding component (11), the sounding component (11) is connected to the electronic product main body (10) in a vibrable form;

The vibration exciter (9) according to any one of claims 1-9, the first vibration component is arranged on the electronic product main body (10), and the second vibration component is arranged on the sound component (11). ); or, the first vibrating component is disposed on the sound-producing component (11), and the second vibrating component is disposed on the electronic product main body (10);

The vibration exciter (9) is configured to drive the sound component (11) to vibrate and sound relative to the electronic product main body (10).