CN208675520U - Speaker unit - Google Patents
Speaker unit Download PDFInfo
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- CN208675520U CN208675520U CN201821035972.4U CN201821035972U CN208675520U CN 208675520 U CN208675520 U CN 208675520U CN 201821035972 U CN201821035972 U CN 201821035972U CN 208675520 U CN208675520 U CN 208675520U
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- voice coil
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- chamfering
- speaker unit
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Abstract
The utility model relates to a kind of speaker units for inhibiting polarization, it include: vibrational system and magnetic circuit system, the vibrational system includes the voice coil being combined together with the magnetic gap of magnetic circuit system, the voice coil includes the voice coil ontology of annular and a pair of lead wires for being symmetrically distributed on voice coil ontology, the side that lead is drawn on voice coil ontology is denoted as outlet side, and the side opposite with outlet side is denoted as free side；The Ampere force outlet side that voice coil ontology is subject in the magnetic field that magnetic circuit system is formed is greater than free side.The speaker unit of inhibition polarization, increases the amplitude of outlet side, has adjusted the vibration balancing of outlet side and free side, improve polarization problem, improve the acoustical behavior of loudspeaker.
Description
Technical field
The utility model relates to acoustic elements, more specifically, the utility model relates to a kind of speaker units.
Background technique
Currently, hanging lead is equipped in the loudspeaker of most of acoustical devices, to connect external circuit by lead.And
In such product, since lead is arranged, in vibration processes, lead can generate draw to product.The tractive force of lead will
The power for causing product lead side to be subject to non-lead side is inconsistent, so that two sides amplitude is different.That is, lead side amplitude is small, it is non-
Lead side amplitude is big, so as to cause product polarization.Polarization problem will further result in product and break, and Dysacousia etc. is asked
Topic.
Generally use centring disk in the prior art to alleviate the polarization of product, but centring disk can occupy certain sky
Between, cause speaker size excessive.And small-sized acoustical device, especially Microspeaker are more demanding to size, this knot
Structure is difficult to meet the size requirement of Microspeaker, while centring disk applies the technology difficulty in Microspeaker higher,
Increase the production cost of Microspeaker.
Therefore, it is necessary to provide new speaker unit.
Utility model content
One purpose of the utility model is to provide a kind of speaker unit.
One aspect according to the present utility model provides a kind of speaker unit, comprising: vibrational system and magnetic circuit system,
The vibrational system includes the voice coil being combined together with the magnetic gap of magnetic circuit system, and the voice coil includes the voice coil ontology of annular
And it is symmetrically distributed in a pair of lead wires on voice coil ontology, the side that lead is drawn on voice coil ontology is denoted as outlet side, with extraction
The opposite side in side is denoted as free side；
Wherein, the Ampere force outlet side that the voice coil ontology is subject in the magnetic field that magnetic circuit system is formed is greater than free side.
Further, the chamfering of two corner locations of outlet side is less than two turnings of the free side on the voice coil ontology
The chamfering of position, so that the conductor length of the voice coil ontology between two turnings of the outlet side is greater than the free side two
The conductor length of voice coil ontology between turning.
Further, the shape of the magnetic gap and the shape of voice coil ontology match, and the magnetic gap corresponds to outlet side
The chamfering at two turnings of position is less than the chamfering that magnetic gap corresponds to two corner locations of free side.
Further, the voice coil ontology, the chamfering on magnetic gap are rounded corner.
Further, the magnetic circuit system includes conductive magnetic yoke, the magnet being mounted in the conductive magnetic yoke and is incorporated into institute
State the magnetic conductive board of magnet surface；The voice coil ontology is hung in the magnetic gap between the conductive magnetic yoke and the magnet.
Further, the chamfering at corresponding two turnings for drawing side position of the magnetic conductive board corresponds to free side less than magnetic conductive board
The chamfering of two corner locations.
Further, the chamfering at corresponding two turnings for drawing side position of the conductive magnetic yoke corresponds to free side less than conductive magnetic yoke
The chamfering of two corner locations.
Further, the chamfering at corresponding two turnings for drawing side position of the magnet corresponds to free side two less than magnet
The chamfering of corner location.
Further, the extraction location of two leads is located at same one side of voice coil ontology.
Further, the extraction location of two leads is located at the same end on voice coil ontology opposite sides side.
One of the utility model has technical effect that, by by the chamfering of two corner locations of voice coil ontology outlet side
It is designed as the chamfering less than two corner locations of free side, so that the conducting wire that the conductor length of outlet side is greater than free side is long
Degree, so that the voice coil ontology Ampere force that outlet side is subject in the magnetic field that magnetic circuit system is formed is greater than the peace that free side is subject to
Power is trained, the amplitude of outlet side is increased, to adjust the vibration balancing of outlet side and free side, solves polarization problem, is improved
The acoustical behavior of loudspeaker.
By the detailed description referring to the drawings to the exemplary embodiment of the utility model, the utility model it is other
Feature and its advantage will become apparent.
Detailed description of the invention
The attached drawing for constituting part of specification describes the embodiments of the present invention, and uses together with the description
In explanation the principles of the present invention.
Fig. 1 is the explosive view of speaker unit provided by the embodiment of the utility model.
Fig. 2 is the top view of speaker unit provided by the embodiment of the utility model.
Fig. 3 is the structural schematic diagram of the magnetic circuit system of speaker unit provided by the embodiment of the utility model.
Description of symbols:
1- front cover；2- vibrational system；3- magnetic circuit system；4- shell；21- vibrating diaphragm；22- voice coil；23- top dome portion；31- magnetic conduction
Plate；32- magnet；33- conductive magnetic yoke；221- voice coil ontology；222- lead.
Specific embodiment
The various exemplary embodiments of the utility model are described in detail now with reference to attached drawing.It should also be noted that unless another
It illustrates outside, the component and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical
Novel and its application or any restrictions used.
Technology and equipment known to person of ordinary skill in the relevant may be not discussed in detail, but in appropriate situation
Under, the technology and equipment should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 is the explosive view of speaker unit provided by the embodiment of the utility model.As shown in Figure 1, inhibition polarization
Speaker unit, comprising: front cover 1, vibrational system 2, magnetic circuit system 3, vibrational system 2 and magnetic circuit system 3 are located at shell 4 and front cover
1 encloses in the cavity set.
Vibrational system 2 includes vibrating diaphragm 21 and the voice coil 22 positioned at 21 lower section of vibrating diaphragm, and top dome portion 23 is additionally provided on vibrating diaphragm 21.
Voice coil 22 does the reciprocating cutting magnetic line of force according to the size and Orientation of the alternating current by its coil in the magnetic gap of magnetic circuit system 3
Movement drives vibrating diaphragm 21 to vibrate, to instigate air sounding, completes the energy conversion between electroacoustic.
Voice coil 22 includes annular voice coil ontology 221 and a pair of lead wires 222 being symmetrically distributed on voice coil ontology 221,
The side that lead is drawn on voice coil ontology 221 is denoted as outlet side, and the side opposite with outlet side is denoted as free side.
For example, following several design methods can be used in the extraction location of lead, so that voice coil leads 222 are symmetrically distributed
On voice coil ontology 221.The extraction location bilateral symmetry of two leads 222 is distributed in same one side of voice coil ontology 221, and symmetrical
Distribution, such as the end positions of same long side can be distributed in.Either, the extraction location of two leads 222 is symmetrical
In the same end on 221 opposite sides side of voice coil ontology, as shown in Fig. 2, the extraction location of two leads 222, which is located at, is distributed in two
On short side, and neighbouring same long side is arranged.
In vibration, since lead is connected on voice coil 22, and the damping glue for buffering, therefore, sound are coated on lead
Circle 22 can additionally by the tractive force of lead in outlet side effect, cause the amplitude of the side smaller；And on the contrary, voice coil 22 from
Power effect it is not towed by side, amplitude can be larger, and the imbalance of this amplitude will cause product polarization problem.
Wherein, the amplitude of voice coil 22 can be changed by changing the Ampere force that voice coil 22 is subject in magnetic field.Voice coil 22 exists
The Ampere force being subject in magnetic field can be calculated by formula (1):
F=BLI (1)
In formula (1), F is the Ampere force that conducting wire is subject in magnetic field, and B is the magnetic induction intensity in magnetic field, and I is electric current
Intensity, L are length of the conducting wire perpendicular to magnetic induction line.Since voice coil 22 is formed by a conducting wire coiling, it is drawn in voice coil 22
Side is identical with the current strength of free side, can change voice coil 22 by way of changing magnetic induction density B and/or conductor length L
Outlet side and the Ampere force that is subject in magnetic field of free side.
In one embodiment of the utility model, change outlet side in magnetic by way of changing outlet side conductor length
The Ampere force being subject in, to change the amplitude of outlet side.
Specifically, Fig. 2 is the top view of speaker unit provided by the embodiment of the utility model, as shown in Fig. 2, voice coil sheet
The chamfering of two corner locations of outlet side is less than the chamfering of two corner locations of free side on body 221, so that outlet side two
The conducting wire that the conductor length L1 of voice coil ontology 221 between turning is greater than the voice coil ontology 221 between two turnings of free side is long
Spend L2.
Optionally, the chamfering of voice coil ontology 221 can be rounded corner.The radius of the size of rounded corner circular arc indicates.
In Fig. 2, the conductor length of the voice coil ontology between two turnings of outlet side is L1, between two turnings of free side
The conductor length of voice coil ontology be L2, the rounded corner of outlet side is R1, and the rounded corner of free side is R2.Wherein, outlet side
Rounded corner R1 is less than the rounded corner R2 of free side, so that the length L1 of outlet side conducting wire is greater than the length L2 of free side conducting wire.It will
Outlet side conductor length as described above is that L1 is brought into formula (1), and the ampere that outlet side conducting wire is subject in magnetic field can be obtained
Power F1；Free side conductor length L2 as described above is brought into formula (1), then available free side conducting wire in magnetic field by
The Ampere force F2 arrived.In this example, it is assumed that free side and the magnetic field strength of outlet side, current strength are equal, due to drawing
Conductor length L1 in side is greater than free side conductor length L2, the Ampere force F1 that the outlet side conducting wire accordingly obtained is subject in magnetic field out
Greater than the Ampere force F2 that free side conducting wire is subject in magnetic field, and then the amplitude of outlet side is increased, has adjusted outlet side and oneself
By the vibration balancing of side, polarization problem is improved, to improve the acoustical behavior of loudspeaker.
Speaker unit provided in this embodiment improves loudspeaking by changing the chamfering angle size of corner location of voice coil ontology
The polarization problem of device, simple process reduce the production cost of Microspeaker.
Wherein, Fig. 3 is the structural schematic diagram of the magnetic circuit system of speaker unit provided by the embodiment of the utility model, is such as schemed
Shown in 3, magnetic circuit system 3 may include conductive magnetic yoke 33, the magnet being mounted in conductive magnetic yoke 33 32 and be incorporated into 32 surface of magnet
Magnetic conductive board 31；Voice coil 22 is hung in the magnetic gap between conductive magnetic yoke 33 and magnet 32.Preferably, the shape and voice coil of magnetic gap
The shape of ontology matches, and the chamfering at corresponding two turnings for drawing side position of magnetic gap is less than magnetic gap and corresponds to free side two
The chamfering of corner location increases the amplitude of outlet side so that outlet side magnetic flux is greater than the magnetic flux of free side, thus
The vibration balancing of outlet side and free side is adjusted, improves polarization problem, to improve the acoustical behavior of loudspeaker.
Wherein, the chamfering on magnetic gap can be rounded corner.And rounding on the shape of magnetic gap rounded corner and voice coil ontology
The shape at angle matches.
The chamfering of above-mentioned magnetic gap corner location is corresponding with the chamfering of voice coil corner location.It is another in the utility model
In a embodiment, the magnetic induction intensity of outlet side and free side can also be corresponded to by individually changing magnetic gap position and reached
The Ampere force that adjustment voice coil is subject to.
For example, being to be corresponded to certainly less than magnetic conductive board 31 by the chamfer design at corresponding two turnings for drawing side position of magnetic conductive board 31
By the chamfering of two corner locations in side.Alternatively, being small by the chamfer design at corresponding two turnings for drawing side position of conductive magnetic yoke 33
In the chamfering of corresponding two corner locations of free side of conductive magnetic yoke 33.Again alternatively, corresponding two for drawing side position of magnet 32 are turned
The chamfer design at angle is less than the chamfering of corresponding two corner locations of free side of magnet 32.
Although being described in detail by some specific embodiments of the example to the utility model, this field
It is to be understood by the skilled artisans that above example merely to be illustrated, rather than in order to limit the scope of the utility model.This
Field it is to be understood by the skilled artisans that can not depart from the scope of the utility model and spirit in the case where, to above embodiments
It modifies.The scope of the utility model is defined by the following claims.
Claims (10)
1. a kind of speaker unit, it is characterised in that: including vibrational system and magnetic circuit system, the vibrational system includes and magnetic circuit
The voice coil (22) that the magnetic gap of system is combined together, the voice coil (22) include the voice coil ontology (221) of annular and symmetrical
The a pair of lead wires (222) being distributed on voice coil ontology, the side that lead is drawn on voice coil ontology (221) are denoted as outlet side, and draw
The opposite side in side is denoted as free side out；
Wherein, the Ampere force outlet side that the voice coil ontology is subject in the magnetic field that magnetic circuit system is formed is greater than free side.
2. speaker unit according to claim 1, it is characterised in that: two turnings of outlet side position on the voice coil ontology
The chamfering set is less than the chamfering of two corner locations of free side, so that the voice coil sheet between two turnings of the outlet side
The conductor length of body is greater than the conductor length of the voice coil ontology between two turnings of the free side.
3. speaker unit according to claim 1 or 2, it is characterised in that: the shape and voice coil ontology of the magnetic gap
Shape match, the chamfering at corresponding two turnings for drawing side position of the magnetic gap is less than magnetic gap and corresponds to free side two
The chamfering of corner location.
4. speaker unit according to claim 3, it is characterised in that: the chamfering on the voice coil ontology, magnetic gap is equal
For rounded corner.
5. speaker unit according to claim 3, it is characterised in that: the magnetic circuit system (3) include conductive magnetic yoke (33),
The magnet (32) that is mounted on the conductive magnetic yoke (33) and the magnetic conductive board (31) for being incorporated into the magnet (32) surface；The sound
Circle ontology (221) is hung in the magnetic gap between the conductive magnetic yoke (33) and the magnet (32).
6. speaker unit according to claim 5, which is characterized in that corresponding two for drawing side position of the magnetic conductive board
The chamfering at turning is less than the chamfering that magnetic conductive board corresponds to two corner locations of free side.
7. speaker unit according to claim 5, which is characterized in that corresponding two for drawing side position of the conductive magnetic yoke
The chamfering at turning is less than the chamfering that conductive magnetic yoke corresponds to two corner locations of free side.
8. speaker unit according to claim 5, which is characterized in that corresponding two for drawing side position of the magnet turn
The chamfering at angle is less than the chamfering that magnet corresponds to two corner locations of free side.
9. speaker unit according to claim 1, which is characterized in that the extraction location of two leads is located at voice coil ontology
Same one side.
10. speaker unit according to claim 1, which is characterized in that the extraction location of two leads is located at sound
Enclose the same end on ontology opposite sides side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821035972.4U CN208675520U (en) | 2018-07-02 | 2018-07-02 | Speaker unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821035972.4U CN208675520U (en) | 2018-07-02 | 2018-07-02 | Speaker unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208675520U true CN208675520U (en) | 2019-03-29 |
Family
ID=65826926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821035972.4U Active CN208675520U (en) | 2018-07-02 | 2018-07-02 | Speaker unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208675520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114303393A (en) * | 2020-06-02 | 2022-04-08 | 索提斯有限公司 | Loudspeaker |
-
2018
- 2018-07-02 CN CN201821035972.4U patent/CN208675520U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114303393A (en) * | 2020-06-02 | 2022-04-08 | 索提斯有限公司 | Loudspeaker |
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