CN212305645U

CN212305645U - Dome and speaker

Info

Publication number: CN212305645U
Application number: CN202022754542.1U
Authority: CN
Inventors: 刘军; 宋学田; 沈振宇
Original assignee: Gettop Acoustic Co Ltd
Current assignee: Gettop Acoustic Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-01-05
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a ball top and speaker, the ball top includes first covering layer and second covering layer, be provided with the orientation sandwich layer between first covering layer and the second covering layer, be provided with a plurality of orientation thing, its characterized in that in the orientation sandwich layer: two ends of the orientation objects are respectively arranged towards the first covering surface layer and the second covering surface layer, a channel for communicating the first covering surface and the second covering surface is formed between the adjacent orientation objects, and fillers are arranged in the channel. The utility model discloses make can not alternately between the orientation thing each other, the voice coil loudspeaker voice coil heat can directly pass to the other end through the one end of orientation thing with heat-conducting mode, has shortened heat transfer path greatly, has higher heat conduction efficiency, and the surface can be reachd to the heat via the shortest distance, can improve directional heat conduction, heat-sinking capability.

Description

Dome and speaker

Technical Field

The utility model relates to an electroacoustic transducer field, specifically say and relate to a speaker and dome.

Background

The speaker is a transducer for converting an electric signal into an acoustic signal, and is widely applied to electronic products such as mobile phones, tablet computers, notebook computers and the like. The structure of a speaker generally includes a magnetic circuit system, a vibration system and an auxiliary system, wherein the vibration system mainly includes a diaphragm and a voice coil. The diaphragm is used as a sound production component in the loudspeaker, and the structure and the material of the diaphragm can obviously influence the sound quality of the loudspeaker. The Dome (Dome, also called as a reinforcing part, a composite part, etc.) is a unit for assisting high-frequency sound production in the diaphragm, and can prevent the diaphragm from generating segmentation vibration in a high-frequency band, thereby expanding the bandwidth of the product. Ball tops are generally required to be lightweight and rigid, and therefore, foam core layers are often used in existing ball tops. The existing dome structure is mostly an aluminum foil + foaming body + aluminum foil structure, has higher strength, is favorable for improving the rigidity of the vibrating diaphragm dome, and improves the high-frequency acoustic performance of the loudspeaker.

But along with speaker product power increase, the voice coil generates heat more and more highly, because the enclosed construction of speaker self, these heats need distribute away from each subassembly conduction of speaker, and wherein, the dome direction is thinnest, and the heat distributes most easily, and the voice coil is indirect and the dome bonds as an organic wholely moreover, and the direct conduction of heat is relatively smooth and easy, therefore the radiating capacity of the thermal dependence dome of giving off of voice coil. This also places increasing demands on the thermal conductivity of the dome. Wherein only the aluminium foil has better heat conduction characteristic in the structure of aluminium foil + foaming body + aluminium foil that traditional ball top material adopted, and the foaming body that occupies middle most thickness is macromolecular material PET, PMI etc. and the heat conduction efficiency is low, and the reason is: firstly, the heat conductivity coefficient of the high polymer material is small; secondly, the foaming body is of a three-dimensional net structure, heat is transferred from one surface of the top of the ball to the other surface of the ball, and the path is long, so that the heat conduction efficiency is low. The foam has very low thermal conductivity, which causes the heat generated by the bonding of the dome and the voice coil to be difficult to dissipate. In addition, although the existing ball top is light in weight, the mechanical strength is not high, and the strength of the ball top gradually cannot meet the requirements of product performance and reliability along with the increase of amplitude and temperature of the vibrating diaphragm during working.

At present, materials such as graphene and carbon fiber are used as the dome, but the materials are stacked, the problem to be solved is the structural strength of the dome, the heat dissipation capability is not improved, and the heat transfer path is disordered, so that the heat dissipation effect of the dome is still poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the weak point of above-mentioned conventional art, provide a structural strength height, the quality is light, the rigidity is strong, especially have strong heat conductivility, the ball top that the radiating effect is good.

The utility model provides a following technical scheme, a ball top, including first covering layer and second covering layer, be provided with the orientation sandwich layer between first covering layer and the second covering layer, be provided with a plurality of orientation thing, its characterized in that in the orientation sandwich layer: two ends of the orientation objects are respectively arranged towards the first covering surface layer and the second covering surface layer, a channel for communicating the first covering surface and the second covering surface is formed between the adjacent orientation objects, and fillers are arranged in the channel.

Preferably, the channel is provided with a first opening facing the first covering surface layer, the channel is provided with a second opening facing the second covering surface layer, and the diameter of the first opening is larger than or smaller than or equal to the second opening.

Preferably, the orienters are arranged in a straight line and/or a curved line.

Preferably, the orienter is one or more of carbon fiber, carbon nanotube or graphene.

Preferably, the oriented core layer has an oriented material content of 20-95% by mass and a filler content of 5-80% by mass.

Preferably, the first facing layer and/or the second facing layer is metal-based.

As a preferable scheme, the first cladding layer and/or the second cladding layer is an aluminum-based cladding layer, a magnesium-aluminum alloy-based cladding layer, or a magnesium-lithium alloy-based cladding layer.

Preferably, the filler is an epoxy system resin filler.

Preferably, the oriented core layer and the first and second facing layers are fixed by an adhesive layer.

As a preferable scheme, the adhesive layer is an epoxy resin adhesive layer.

Owing to adopted above-mentioned technical scheme, compare with prior art, the utility model has the advantages of it is following: through the both ends with the orientation thing respectively towards first covering layer and the setting of second covering layer and respectively with first covering layer and second covering layer butt, form the passageway of the first covering surface of intercommunication and second covering surface between the adjacent orientation thing, make can not intersect each other between the orientation thing, the voice coil loudspeaker voice coil heat can directly pass to the other end through the one end of orientation thing with heat-conducting mode, the heat transfer route has been shortened greatly, higher heat conduction efficiency has, the heat can reach the surface via the shortest distance, can improve directional heat conduction, the heat-sinking capability.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment 1 of the high thermal conductivity oriented dome of the present invention.

Fig. 2 is a schematic structural diagram of an embodiment 2 of the high thermal conductivity oriented dome of the present invention.

Fig. 3 is a schematic structural diagram of an embodiment 3 of the high thermal conductivity oriented dome of the present invention.

Fig. 4 is a schematic structural diagram of an embodiment 4 of the high thermal conductivity oriented dome of the present invention.

Fig. 5 is a schematic structural diagram of an embodiment 5 of the high thermal conductivity oriented dome of the present invention.

Fig. 6 is a schematic structural diagram of an embodiment 6 of the high thermal conductivity oriented dome 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 only some embodiments of the present invention, not all embodiments. 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.

Example 1: as shown in fig. 1, a ball top includes a first covering layer 1 and a second covering layer 2, an orientation core layer 3 is disposed between the first covering layer 1 and the second covering layer 2, a plurality of orientation objects 4 are disposed in the orientation core layer 3, two ends of each orientation object 4 are respectively disposed toward the first covering layer 1 and the second covering layer 2 and respectively abut against the first covering layer 1 and the second covering layer 2, a channel 5 communicating the first covering layer and the second covering layer is formed between adjacent orientation objects 4, and a filler 6 is disposed in the channel 5.

In this embodiment, as shown in fig. 1, first covering layer 1 and second covering layer 2 constitute the upper and lower two skin structure of ball top respectively, connect as an organic wholely by orientation sandwich layer 3, the heat is by the covering layer that is close to the source that generates heat to the covering layer transmission of keeping away from the source that generates heat via orientation sandwich layer 3, adopt two covering layers of 4 lug connection of middle orientation thing in this application, make the heat conduction distance between two covering layers shortest, conduction efficiency reaches the highest, thereby increase substantially heat conduction efficiency, promote the radiating effect, just also can obviously reduce the inside temperature of speaker, prolong the speaker life-span.

In this embodiment, the orientation objects 4 are linearly arranged, the orientation objects 4 are simultaneously perpendicular to the first covering surface layer and the second covering surface layer, and heat can reach an opposite surface through the shortest distance, so that the directional heat conduction and heat dissipation capability can be improved. The passageway 5 is provided with first opening towards first covering surface layer, passageway 5 is provided with the second opening towards second covering surface layer, the diameter of first opening equals the second opening, and the diameter everywhere in the passageway 5 equals.

The orientation object 4 is one or more of carbon fiber, carbon nanotube or graphene. In this embodiment, the orientation material 4 is a carbon fiber material, and the carbon fiber is a special fiber composed of carbon elements, and has the characteristics of high temperature resistance, friction resistance, electric conductivity, heat conduction, corrosion resistance and the like. The graphite microcrystalline structure of the carbon fiber has a preferred orientation along the fiber axis, so that the carbon fiber has high strength and modulus along the fiber axis direction, and the specific strength and specific modulus of the carbon fiber are high due to the small density of the carbon fiber. In the technical scheme of the embodiment, the carbon fibers are used as the material of the orientation objects 4, so that the heat transfer property, the strength and the flexibility of the orientation objects 4 can be ensured.

The oriented substance 4 in the oriented core layer 3 accounts for 20-95% of the mass ratio, and the filler 6 accounts for 5-80% of the mass ratio. The mass ratio of the orientation object 4 is limited, so that the heat dissipation and the strength of the ball top can be improved, and the light weight requirement of the ball top can be met. In this example, the content of the alignment material 4 was 30%, and correspondingly, the content of the filler 6 was 70%.

In this embodiment, the first facing layer 1 and the second facing layer 2 are both metal-based. The aluminum-based covering layer is adopted, and other metal-based covering layers such as a magnesium aluminum alloy-based covering layer, a magnesium lithium alloy-based covering layer and the like can also be adopted as the first covering layer or the second covering layer. Or the first covering surface layer or the second covering surface layer adopts other base layers with good thermal conductivity.

In this embodiment, the filler 6 is an epoxy system resin filler 6. The function of bonding and fixing is achieved.

The oriented core layer 3 and the first facing layer 1 and the second facing layer 2 are fixed by an adhesive layer 7. The glue layer 7 is an epoxy resin glue layer 7.

Example 2: as shown in fig. 2, in this embodiment, the first facing layer 1 and the second facing layer 2 are both carbon fiber layers, and two sides of the orientation core layer 3 are directly bonded and fixed with the first facing layer 1 and the second facing layer 2, that is, the filler 6 of the epoxy system resin is directly bonded with the first facing layer 1 and the second facing layer 2, and then molding is performed, so that the orientation object 4 in the orientation core layer 3 is always vertically arranged relative to the first facing layer 1 and the second facing layer 2, thereby maximizing the heat conduction effect and reducing the reduction of the heat conduction efficiency caused by an excessively long transmission path.

The glue layer 7 is omitted, further improving the structural strength and the heat conduction speed.

The rest of this example is the same as example 1.

Example 3: as shown in fig. 3, in the present embodiment, the first facing layer 1 is a metal base, and the second facing layer 2 is a carbon fiber layer, or the first facing layer 1 is a carbon fiber layer, and the second facing layer 2 is a metal base, such as a magnesium aluminum alloy based facing layer, a magnesium lithium alloy based facing layer, and the like. The orienters 4 are arranged in a curved manner, and the diameter of the channels 5 formed between adjacent orienters 4 is not equal from the first facing end to the second facing end.

The rest of this example is the same as example 1.

Example 4: as shown in fig. 4, in the present embodiment, the orienters 4 are arranged in a zigzag manner, and the orienters 4 are arranged in parallel with each other, and the diameter of the channel 5 formed between adjacent orienters 4 is equal from the first facing end to the second facing end.

The rest of this example is the same as example 1.

Example 5: as shown in fig. 5, in the present embodiment, the orienters 4 are arranged in a curve, and the orienters 4 are arranged in parallel with each other, and the diameter of the channel 5 formed between adjacent orienters 4 is equal from the first facing end to the second facing end.

The rest of this example is the same as example 1.

Example 6: as shown in fig. 6, in the present embodiment, the orienters 4 are straight and inclined, and the diameters of the passages 5 formed between adjacent orienters 4 are not equal from the first facing end to the second facing end, so that the diameters of the first opening and the second opening of the passage 5 are not equal.

The rest of this example is the same as example 1.

Example 7: a loudspeaker comprising a vibration system, the vibration system comprising a diaphragm and a voice coil, the diaphragm comprising a dome as in any one of embodiments 1-4, the voice coil being fixedly attached to the dome.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a ball top, includes first cladding layer and second cladding layer, be provided with the orientation sandwich layer between first cladding layer and the second cladding layer, be provided with a plurality of orientation thing in the orientation sandwich layer, its characterized in that: the two ends of the orientation objects are respectively arranged towards the first covering layer and the second covering layer and are respectively abutted against the first covering layer and the second covering layer, a channel for communicating the first covering layer and the second covering layer is formed between the adjacent orientation objects, and fillers are arranged in the channel.

2. A dome according to claim 1, wherein: the passageway is provided with first opening towards first covering surface course, the passageway is provided with the second opening towards second covering surface course, the diameter of first opening is greater than or less than or equal to the second opening.

3. A dome according to claim 1, wherein: the orienters are arranged in a straight line and/or a curve.

4. A dome according to claim 1, wherein: the orientation object is one of carbon fiber, carbon nanotube or graphene.

5. A dome according to claim 1, wherein: the first covering layer and/or the second covering layer are metal-based or carbon fiber layers.

6. A dome according to claim 5, characterized in that: the first cladding layer and/or the second cladding layer are an aluminum-based cladding layer, a magnesium-aluminum alloy-based cladding layer and a magnesium-lithium alloy-based cladding layer.

7. A dome according to claim 1, wherein: the filler is epoxy system resin filler.

8. A dome according to any one of claims 1 to 7, wherein: the oriented core layer and the first and second covering layers are fixed by an adhesive layer.

9. A loudspeaker, comprising a vibration system, the vibration system comprising a diaphragm and a voice coil, characterized in that: the diaphragm comprises a dome as claimed in any one of claims 1 to 8, the voice coil being fixedly connected to the dome.