CN211509282U

CN211509282U - Vibration loudspeaker and equipment applying same

Info

Publication number: CN211509282U
Application number: CN202020292858.0U
Authority: CN
Inventors: 葛虎
Original assignee: Shanghai Yeahoo Acoustic Technology Co ltd
Current assignee: Shanghai Yeahoo Acoustic Technology Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-09-15
Anticipated expiration: 2030-03-11

Abstract

The embodiment of the utility model discloses vibration loudspeaker and use its equipment. Wherein the vibration speaker includes the vibration plane, the vibration elastic support body, the voice coil loudspeaker voice coil, the PCB board is drawn forth to magnet and pole piece and voice coil loudspeaker voice coil, wherein be connected with glue between vibration plane and the vibration elastic support body, be connected with glue between voice coil loudspeaker voice coil and the vibration elastic support body, the vibration plane, vibration elastic support body and voice coil loudspeaker voice coil vibration elastic support body vibration plane subassembly is formed to vibration elastic support body together bonding, the magnetism cover, magnet and pole piece are made up into magnetic circuit subassembly together with glue bonding, voice coil loudspeaker voice coil vibration elastic support body vibration plane subassembly and magnetic circuit subassembly form the vibration speaker body together through glue bonding, the voice coil loudspeaker voice coil lead-out wire is drawn forth.

Description

Vibration loudspeaker and equipment applying same

Technical Field

The utility model belongs to the technical field of the electroacoustic, concretely relates to vibration loudspeaker and use its equipment.

Background

Sound is generated by the vibration of an object. The conventional speaker, whose operation principle is simplified, can be expressed as: the electrified coil is subjected to the action of magnetic force in a magnetic field to generate vibration, the coil is connected with the vibrating diaphragm, and the electrified coil drives the vibrating diaphragm to vibrate. The diaphragm is vibrated by fixing the outer edge of the diaphragm to a fixing device (the fixing device is generally called a bracket), and then sounds are generated.

In addition to loudspeaker diaphragms, vibrations of objects in nature can produce sound. Such as a window or door glass, when it is in a vibrating environment, it will vibrate and make a sound.

The existing speaker works by pushing air with a diaphragm, and when the existing speaker works, if sound waves are radiated outwards, a corresponding sound wave channel needs to be reserved on the system, and the sound wave channel is often called as a front sound cavity and a sound outlet hole. Due to the existence of the channel, the whole sound channel is more complicated, is not beneficial to reducing the volume and is also not beneficial to being beautiful. Meanwhile, in life, many sound waves are transmitted through the air, i.e., a solid plane, i.e., air, most typically a closed window in a home, and external noise is mainly transmitted through the outdoor air, i.e., glass, i.e., indoor air. Assuming that we need to attenuate this noise, we must find a "target point" in the propagation path, and suppress the vibration of the "target point" so that the overall noise is suppressed. The vibration and sound production of the diaphragm of the traditional loudspeaker are difficult to simulate the vibration law and the sound field generated by the propagation path of each real object in the nature. It is therefore also an urgent need to start from a "solid plane" by a completely new design to generate acoustic vibrations that simulate and cancel this noise.

SUMMERY OF THE UTILITY MODEL

In view of the technical problem who exists above, the utility model is used for provide a vibration speaker and use its equipment.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an aspect of the embodiment of the utility model provides a vibration speaker, including the vibration plane, the vibration elastic support body, the voice coil loudspeaker voice coil, the magnetic shield, magnet and pole piece and voice coil loudspeaker voice coil draw forth the PCB board, wherein be connected with glue between vibration plane and the vibration elastic support body, be connected with glue between voice coil loudspeaker voice coil and the vibration elastic support body, the vibration plane, vibration elastic support body and voice coil loudspeaker voice coil vibration elastic support body vibration plane subassembly is constituteed together in vibration elastic support body and the bonding of glue, the magnetic shield, magnet and pole piece are made up into magnetic circuit subassembly together with the bonding of glue, voice coil loudspeaker voice coil vibration elastic support body vibration plane subassembly and magnetic circuit subassembly form the vibration speaker body through the bonding of glue together, the voice coil.

Preferably, the vibration plane is used for bonding or crimping to another external plane, and the vibration plane drives the vibration of the bonded or crimped external plane to generate sound.

Preferably, the vibration elastic support body comprises a vibration elastic support body peripheral part, an elastic vibration part of the vibration elastic support body and a central part of the vibration elastic support body, wherein the vibration elastic support body peripheral part is used for being fixed and connected with the magnetic circuit assembly, one side of the central part of the vibration elastic support body is used for being connected and fixed with the voice coil, and the other side of the central part of the vibration elastic support body is used for being connected and fixed with the vibration plane; the elastic vibration part of the vibration elastic support body is formed by 2 or more than 2 structural arrays surrounding the central line of the vibration elastic support body, and is used for generating deformation along the direction of magnetic field force and generating a reaction force when the voice coil connected with the central part of the vibration elastic support body in the central part area of the vibration elastic support body is under the action of the magnetic field force.

Preferably, the vibration plane is a rigid planar piece of material.

Preferably, the magnetic shield and the magnet are bonded with the pole piece to form a magnetic circuit assembly.

Preferably, the magnet and pole piece surround the magnetic shield, the magnet is bonded over the magnetic shield, the pole piece is bonded over the magnet, and a magnetic field is formed between the magnetic shield and the pole piece.

Preferably, the magnets are arranged into inner magnets and outer magnets, the pole pieces are arranged into inner pole pieces and outer pole pieces, the inner magnets and the outer magnets are bonded above the magnetic shield, the outer pole pieces are bonded above the outer magnets, the inner pole pieces are bonded above the inner magnets, and a magnetic field is formed between the inner pole pieces and the outer pole pieces.

It is yet another aspect of the embodiments of the present invention to provide an apparatus including a vibration speaker as described above.

Adopt the utility model discloses following beneficial effect has: compare through the mode of vibrating diaphragm sound production with traditional speaker, the utility model discloses a vibration speaker is through directly transmitting the vibration for another outside plane, sends sound through the outside plane. With the arrangement, a channel for sound transmission required by the traditional loudspeaker does not need to be reserved independently, and hidden sound reproduction can be realized. For another example, the vibration speaker and the room glass are bonded or pressed together, so that the vibration of the glass can be driven by the vibration speaker, and the vibration speaker can be better applied to scenes such as active noise reduction and the like.

Drawings

Fig. 1 is a schematic sectional structure view of a vibration speaker according to an embodiment of the present invention;

fig. 2a is a schematic top view of the vibrating elastic support body in the vibrating speaker according to the embodiment of the present invention;

fig. 2b is a schematic cross-sectional structure diagram of the vibration elastic supporting body in the vibration speaker according to the embodiment of the present invention;

fig. 3 is a schematic view of an application structure of the vibration speaker according to the embodiment of the present invention;

fig. 4 is a schematic view of another application structure of the vibration speaker according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a magnetic circuit assembly according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a magnetic circuit assembly according to still another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 shows the utility model relates to a vibration speaker's of an embodiment structure schematic diagram, including vibration plane 1, vibration elastic support body 2, voice coil loudspeaker voice coil 3, magnetic shield 4, magnet 5 and pole piece 6 and voice coil loudspeaker voice coil draw forth PCB board 7, wherein be connected with glue 8 between vibration plane 1 and the vibration elastic support body 2, be connected with glue 8 between voice coil loudspeaker voice coil 3 and the vibration elastic support body 2, vibration plane 1, vibration elastic support body 2 and voice coil loudspeaker voice coil 3 bond and constitute voice coil loudspeaker voice coil vibration elastic support body vibration plane subassembly together, magnetic shield 4, magnet 5 and pole piece 6 bond and constitute magnetic circuit subassembly together with glue 8, voice coil loudspeaker voice coil vibration elastic support body vibration plane subassembly and magnetic circuit subassembly bond together through glue 8 and form the vibration speaker body, the voice coil loudspeaker voice coil lead-out wire draws forth PCB board 7.

The vibration loudspeaker provided by the above embodiment operates as follows:

firstly, a magnetic circuit assembly is formed among the magnetic cover 4, the magnet 5 and the pole piece 6. The working principle is that the magnetic line of force of the magnet 5 passes through the magnetic cover 4, the air gap between the magnetic cover 4 and the pole piece 6, and the pole piece 6 forms a loop. And a magnetic field is formed between the magnetic shield 4 and the pole piece 6. It should be noted that the core of the magnetic circuit assembly is that a magnetic field is required to be obtained between the magnetic shield 4 and the pole piece 6.

Secondly, be connected with glue 8 between vibration plane 1 and the vibration elastic support body 2, be connected with glue 8 between voice coil loudspeaker voice coil 3 and the vibration elastic support body 2, bond with glue 8 and constitute voice coil loudspeaker voice coil vibration elastic support body vibration plane subassembly together between vibration plane 1, vibration elastic support body 2 and the voice coil loudspeaker voice coil 3. The vibration plane is a rigid plane material, including but not limited to organic glass, PP, engineering plastics, glass, ceramics, bamboo, wood, nonmetal, metal, and composite of multiple materials, and there may be cases where the shape or plane portion of the vibration plane is treated with radian, pattern, groove, step, and the like, or even the vibration plane and the vibration elastic support are combined into one. The vibrating elastic support is a key component of the design, and the structure of the vibrating elastic support is shown in fig. 2a and 2 b. The vibrating elastic support body 2 comprises a vibrating elastic support body peripheral part 201, an elastic vibrating part 202 of the vibrating elastic support body and a central part 203 of the vibrating elastic support body, wherein the vibrating elastic support body peripheral part 201 is used for being fixed and connected with a magnetic circuit assembly, one side of the central part 203 of the vibrating elastic support body is used for being connected and fixed with a voice coil, and the other side of the central part 203 of the vibrating elastic support body is used for being connected and fixed with a vibrating plane; the elastic vibration part 202 of the vibrating elastic support body is formed by an array of 2 or more than 2 structures surrounding the center line of the vibrating elastic support body, and is used for generating deformation along the direction of magnetic field force and generating a reaction force when the voice coil connected with the center part of the vibrating elastic support body in the area of the center part 203 of the vibrating elastic support body is acted by the magnetic field force. The magnitude of the reaction force and the deformation of the elastic vibration part of the vibration elastic support body are in a monotone increasing or decreasing relationship, that is, the larger the magnetic field force is, the larger the deformation of the elastic vibration part of the vibration elastic support body is, the larger the reaction force generated by the elastic vibration part is, and conversely, the smaller the magnetic field force is, the smaller the deformation of the elastic vibration part of the vibration elastic support body is, and the smaller the reaction force generated by the elastic vibration part of the vibration elastic support body is. At the same time, the direction of the reaction force is opposite to the direction of the magnetic field. From the above analysis, it can be seen that the core and essence of the design of the elastic vibration portion of the vibrating elastic support body is to obtain an elastic body structure having the above characteristics, and such a structure can be realized in various ways, for example, by changing the shape, thickness, number of arrays, material, etc. of the elastic vibration portion 202 region of the vibrating elastic support body, or by combining a plurality of components, even a plurality of components of different materials, by bonding, in-mold injection, etc. The elasticity of some materials can be used, no array processing is carried out on the 202 area, and the functions of the 202 area can be realized by using the characteristics of the materials. However, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

And finally, after the magnetic circuit assembly is combined with the voice coil vibration elastic support body vibration plane assembly, the PCB 7 is led out through the voice coil, and a voice coil wire is led out. When an alternating voltage is applied to the voice coil 3 by leading out the PCB 7 through the voice coil, the alternating current in the voice coil 3 is acted by a magnetic field to generate a magnetic field force. The magnetic field force makes the vibration elastic support body deform, and then drives the vibration plane to vibrate.

Referring to fig. 3 and 4, two general schematic representations of the vibration speaker and the external planar connection are shown during use. The vibration speaker and the external plane can be bonded together by glue (fig. 3), or the vibration speaker and the external plane can be pressed together by applying a force externally (fig. 4), the vibration plane of the vibration speaker drives the vibration which is bonded or pressed on the external plane, and the magnetic field force generated by the electrified coil is transmitted to the connected external plane through the vibration plane, so as to generate sound.

The magnetic circuit assembly formed by the magnetic cover 4, the magnet 5 and the pole piece 6 is not limited to the structural schematic diagram given in fig. 1. Referring to fig. 5, a magnet 5 and a pole piece 6 are wound on a magnetic shield 1, the magnet 5 is bonded above the magnetic shield 4, the pole piece 6 is bonded above the magnet 5, and a magnetic field is formed between the magnetic shield 4 and the pole piece 6. In the above design, the shape and number of the magnets can be adjusted and changed, for example, the magnet 5 can be divided into a plurality of small magnets, or the shape of the magnet 5 can be changed, for example, to a square or a runway. Accordingly, the shape of the pole piece 6 is also adjusted with the magnet.

In another specific application example, referring to fig. 6, the magnet 5 is arranged into an inner magnet 51 and an outer magnet 52, the pole piece 6 is arranged into an inner pole piece 61 and an outer pole piece 62, the inner magnet 51 and the outer magnet 52 are bonded above the magnetic shield 4, the outer pole piece 62 is bonded above the outer magnet 52, the inner pole piece 61 is bonded above the inner magnet 51, and a magnetic field is formed between the inner pole piece 61 and the outer pole piece 62. It should be noted that the shapes and numbers of the inner magnet 51 and the outer magnet 52 can be adjusted and changed as required, for example, the shape of the inner magnet can be changed from a circle to a square or a track, and the shape of the corresponding outer magnet can be changed from a ring to a square or a track. For example, the number of the outer magnets 52 may be split from one magnet into a plurality of magnets, and the number of the outer pole pieces 62 may be split from one outer pole piece into a plurality of outer pole pieces.

A further embodiment of the invention provides an apparatus comprising a vibration loudspeaker as described above, i.e. which can be arranged as a component of the apparatus.

It will be apparent from the foregoing description and examples that the embodiments described above are part of the present invention, and not all of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the ordinary skilled in the art without creative work, including but not limited to the various magnetic circuit schematic shown in the specification, the various shapes and shapes, thickness, array number, material and the like of the vibration elastic support body, the form of the leading-out wire terminal changes, the magnetic circuit shape changes from circular to square, rectangular runway shape or even other shapes, the change of the shape, material and thickness of the vibration plane even removes the vibration plane, and is directly driven by the vibration elastic support body, the shape of the vibration speaker changes from circular to square, rectangle, runway shape or even other shapes, and so on. Because all can regard as on principle and implementation method based on the utility model discloses a reasonable deformation also all belongs to the scope of protection of the utility model.

Claims

1. A vibration loudspeaker is characterized by comprising a vibration plane (1), a vibration elastic supporting body (2), a voice coil (3), a magnetic cover (4), a magnet (5), a pole piece (6) and a voice coil leading-out PCB (7), wherein the vibration plane (1) and the vibration elastic supporting body (2) are connected by glue (8), the voice coil (3) and the vibration elastic supporting body (2) are connected by glue (8), the vibration plane (1), the vibration elastic supporting body (2) and the voice coil (3) are bonded together to form a voice coil vibration elastic supporting body vibration plane assembly, the magnetic cover (4), the magnet (5) and the pole piece (6) are bonded together by glue (8) to form a magnetic circuit assembly, the voice coil vibration elastic supporting body vibration plane assembly and the magnetic circuit assembly are bonded together by glue (8) to form a vibration loudspeaker body, the voice coil lead-out wire is led out of the PCB (7) through the voice coil.

2. A vibration speaker as claimed in claim 1, wherein said vibration plane is adapted to be bonded or bonded to another external plane, and vibration of the bonded or bonded external plane is driven through said vibration plane to generate sound.

3. A vibrating loudspeaker according to claim 1, characterised in that the vibrating elastic support body (2) comprises a vibrating elastic support body peripheral portion (201), an elastic vibrating portion (202) of the vibrating elastic support body and a central portion (203) of the vibrating elastic support body, said vibrating elastic support body peripheral portion (201) being intended to be fixed and connected to the magnetic circuit assembly, the central portion (203) of the vibrating elastic support body being intended on one side to be connected and fixed to the voice coil and on the other side to be connected and fixed to the vibrating plane; the elastic vibration part (202) of the vibration elastic support body is formed by an array of 2 or more than 2 structures surrounding the central line of the vibration elastic support body, and is used for generating deformation along the direction of magnetic field force and simultaneously generating a reaction force when the voice coil connected with the central part of the vibration elastic support body in the area of the central part (203) of the vibration elastic support body is acted by the magnetic field force.

4. A vibration loudspeaker according to any one of claims 1 to 3, wherein said vibration plane is a rigid planar piece of material.

5. A vibration loudspeaker according to any one of claims 1 to 3, wherein the magnetic cover (4) and the magnet (5) and the pole piece (6) are bonded to form a magnetic circuit assembly.

6. A vibration loudspeaker according to any one of claims 1 to 3, wherein the magnet (5) and the pole piece (6) are arranged around the magnetic shield (4), the magnet (5) being bonded over the magnetic shield (4), the pole piece (6) being bonded over the magnet (5), and a magnetic field being formed between the magnetic shield (4) and the pole piece (6).

7. A vibration loudspeaker according to any one of claims 1 to 3, wherein the magnet (5) is provided as an inner magnet (51) and an outer magnet (52), the pole piece (6) is provided as an inner pole piece (61) and an outer pole piece (62), the inner magnet (51) and the outer magnet (52) are bonded above the magnetic shield (4), the outer pole piece (62) is bonded above the outer magnet (52), the inner pole piece (61) is bonded above the inner magnet (51), and a magnetic field is formed between the inner pole piece (61) and the outer pole piece (62).

8. An apparatus comprising a vibrating loudspeaker according to any one of claims 1 to 7.