CN204795585U - Anti - ball top bugle high pitch loudspeaker - Google Patents

Abstract

The utility model relates to the technical field of electroacoustic devices, in particular to an anti-dome horn tweeter. It includes a driving magnet group, a phase plug group, a voice coil, a horn, and an anti-spherical diaphragm. A downwardly concave spherical depression is formed at the center of the top surface of the driving magnet group, and a spherical depression is formed at the center of the bottom surface of the phase plug group. The concave portion matches the spherical convex portion, the voice coil is sleeved on the periphery of the spherical concave portion, the reverse dome diaphragm is located between the spherical concave portion and the spherical convex portion and is bonded to the voice coil, the reverse dome diaphragm The dome of the ball is adjacent to the concave part of the spherical surface, and the horn is set on the driving magnet group through the phase plug group seat. The anti-dome diaphragm of the utility model adopts the setting form opposite to the diaphragm of the traditional tweeter, so that the sound does not need to go through the narrow and long channel in the traditional U-iron to connect with the horn after being compressed by the phase plug group, so as to effectively It avoids the distortion and loss after the sound is attenuated, makes the frequency response curve flat, and greatly improves the effect of sound quality reproduction.

Description

An anti-dome horn tweeter

technical field

The utility model relates to the technical field of electroacoustic devices, in particular to an anti-dome horn tweeter.

Background technique

The dome-shaped speaker is one of the most widely used electric speakers in speakers at present. It has the advantages of wide directivity, good transient characteristics, small distortion and good sound quality. The existing dome-shaped loudspeaker (as shown in Figure 2) is mainly composed of a diaphragm 1', a lining ring 2', a rubber ring 3', a pole piece 4', a voice coil 5', a magnet 6', and a T iron 7'. Composed with panel 8', etc., the diaphragm 1' is generally designed in a hemispherical shape to increase the strength of the diaphragm 1; however, since the sound is transmitted through a long and narrow hole in the T iron 7' Yes, the sound will attenuate rapidly during the transmission process, which will lead to the deterioration of the frequency response curve of the speaker, and then affect the replay effect of the treble; at the same time, because the diaphragm 1' is only supported by the surrounding rubber ring 3', resulting in Lateral vibrations are prone to occur at lower levels, which can cause sound distortion.

Therefore, it is necessary to propose an improvement scheme for the existing dome-shaped loudspeaker, so as to optimize the frequency response curve of the loudspeaker and improve the sound quality reproduction effect of the loudspeaker.

Utility model content

In view of the deficiencies in the above-mentioned prior art, the purpose of this utility model is to provide a reverse dome horn tweeter with simple and compact structure, low sound distortion, and remarkable sound quality reproduction effect.

In order to achieve the above object, the utility model adopts the following technical solutions:

An anti-dome horn tweeter, which includes a driving magnet group, a phase plug group, a voice coil, a horn and an anti-dome diaphragm, and a downwardly concave spherical depression is formed at the center of the top surface of the driving magnet group, The center of the bottom surface of the phase plug group is formed with a spherical protruding part that coincides with the spherical concave part. The voice coil is sleeved on the periphery of the spherical concave part. The parts are bonded to the voice coil, the dome of the anti-dome diaphragm is adjacent to the spherical concave part, and the horn is set on the driving magnet group through the phase plug group seat.

Preferably, the drive magnet group includes a first magnetically permeable ring post, a second magnetically permeable ring post, a third magnetically permeable ring post and a U-iron with a central axis hole, and the central axis hole of the U-iron is filled with the first A sound-absorbing cotton, the first magnetically conductive ring column is located in the U iron and is sleeved on the first sound-absorbing cotton, and the third magnetically conductive ring column is seated on the top surface of the U iron and adhered to the phase plug group Then, the second magnetically permeable ring post seat is set on the first magnetically permeable ring post and located in the third magnetically permeable ring post;

The spherical concave part is formed at the center of the top surface of the second magnetically conductive ring column, and a through hole communicating with the first sound-absorbing cotton is opened at the spherical center of the spherical concave part. Between the magnetic ring post and the third magnetic conduction ring post, the horn is seated on the third magnetic conduction ring post through the phase plug group.

Preferably, the second sound-absorbing cotton is attached to the surface of the spherical concave portion.

Preferably, the third sound-absorbing cotton is filled between the outer wall surface of the first magnetically permeable ring column and the inner wall surface of the U iron, above the third sound-absorbing cotton, it is located between the outer wall surface of the second magnetically permeable ring column and the first A sound cavity is formed between the inner wall surfaces of the three magnetically conducting ring columns.

Preferably, the phase plug group includes a phase plug ring and a phase plug, the phase plug is sleeved in the phase plug ring, the spherical protrusion is formed at the center of the bottom surface of the phase plug, and the horn passes through the phase plug ring The seat is arranged on the driving magnet group.

Preferably, several sound guide posts are formed on the top surface of the phase plug.

Preferably, a sound film support is clamped between the phase plug ring and the driving magnet group, and the edge of the anti-dome diaphragm is fixed on the sound film support.

Due to the adoption of the above scheme, the anti-dome diaphragm of the utility model adopts the setting form opposite to the diaphragm of the traditional tweeter, so that the sound does not need to pass through the narrow and long channel in the traditional U-iron after being compressed with the horn The connection can effectively avoid the distortion and loss of the sound after the sound is attenuated, make the frequency response curve flat, and greatly improve the sound quality reproduction effect; its structure is simple and compact, the sound quality reproduction effect is remarkable, and it has a strong Practical value and marketing value.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram of the utility model embodiment;

Fig. 2 is a schematic structural diagram of a dome-shaped loudspeaker in the prior art.

Detailed ways

The embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, but the utility model can be implemented in various ways defined and covered by the claims.

As shown in Figure 1, the utility model provides a kind of anti-dome horn tweeter, which includes a driving magnet group, a phase plug group made of aluminum material, a voice coil 1, an anti-dome diaphragm 2 and a glass-steel Formed horn 3; wherein, a downwardly recessed spherical depression a is formed at the center of the top surface of the drive magnet group, and a spherical protrusion a that is relatively consistent with the spherical depression a is formed at the center of the bottom surface of the phase plug group b, the voice coil 1 is sleeved on the periphery of the spherical concave part a, and the anti-dome diaphragm 2 is located between the spherical concave part a and the spherical convex part b and is bonded to the voice coil 1. At the same time, the anti-dome The spherical top of the vibrating membrane 2 is adjacent to the spherical concave portion a, and the horn 3 is set on the drive magnet group through the phase plug group seat. In this way, after the sound current signal generated by the driving magnet group is passed into the voice coil 1, it can be radiated out after being coupled with the horn through the anti-dome diaphragm 2, thereby forming a high-pitched effect; since the anti-dome diaphragm 2 adopts The setting form of the opposite direction of the diaphragm of the traditional tweeter makes the sound no longer need to pass through the narrow and long channel in the traditional U iron to connect with the horn 3 after being compressed by the phase plug group, thus effectively avoiding the distortion of the sound after being attenuated And loss, so that the frequency response curve becomes flat, greatly improving the effect of sound quality reproduction.

In order to ensure the driving effect of the sound current signal and the transmission effect of the sound, and optimize the structure of the loudspeaker of this embodiment, the driving magnet group of this embodiment includes a first magnetically conductive ring post 4, a second magnetically conductive ring post 5, a third magnetically conductive ring post The magnetically conductive ring column 6 and the U iron 7 with a central axis hole are filled with the first sound-absorbing cotton 8 in the central axis hole of the U iron 7, and the first magnetically conductive ring column 4 is located in the U iron 7 and is sleeved on the first On the sound-absorbing cotton 8, the third magnetically conductive ring column 6 is set on the top surface of the U iron 7 and bonded with the phase plug group, the second magnetically conductive ring column 5 is set on the first magnetically conductive ring column 4 and Located in the third magnetically permeable ring column 6; correspondingly, the spherical concave part a is formed at the center of the top surface of the second magnetically permeable ring column 5, and the center of the spherical concave part a is opened to communicate with the first sound-absorbing cotton 8 Through hole 9, the voice coil 1 is located between the second magnetically permeable ring post 5 and the third magnetically permeable ring post 6, and the horn 3 is seated on the third magnetically permeable ring post 6 through the phase plug assembly.

In order to further optimize the sound transmission effect, a second sound-absorbing cotton 10 is attached to the surface of the spherical concave portion a.

In order to ensure the sound reproduction effect, the third sound-absorbing cotton 11 is filled between the outer wall surface of the first magnetically permeable ring post 4 and the inner wall surface of the U iron 7, above the third sound-absorbing cotton 11, located at the second magnetically permeable A sound cavity 12 is formed between the outer wall of the ring post 5 and the inner wall of the third magnetically conductive ring post 6 .

In order to ensure the output effect after the sound is compressed, the phase plug group of this embodiment includes a phase plug ring 13 and a phase plug 14; wherein, the phase plug 14 is socketed in the phase plug ring 13, and the spherical protrusion b is formed on the phase plug ring 13. At the center of the bottom surface of the plug 14 , the horn 3 is seated on the driving magnet group (specifically, the third magnetic conducting ring post 6 ) through the phase plug ring 13 .

In order to optimize the effect of sound output, several sound guide columns 15 are formed on the top surface of the phase plug 14 .

In order to ensure the firmness of the anti-dome diaphragm 2, and rationally optimize the structure of the entire loudspeaker, a sound diaphragm support is also clamped between the phase plug ring 13 and the driving magnet group (specifically, the third magnetic conducting ring post 6) 16. The edge of the anti-dome diaphragm 2 is fixed on the sound film support 16.

The above descriptions are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification of the utility model and the contents of the accompanying drawings may be directly or indirectly used in Other relevant technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (7)

1. an anti-ball top bugle high pitch loudspeaker, it is characterized in that: it comprises drive magnet group, phase plug group, voice coil loudspeaker voice coil, bugle and anti-ball top vibrating diaphragm, the end face center of described drive magnet group is formed with the spherical depression portion to lower recess, the place of bottom center of described phase plug group is formed with the sphere protuberance coincide with the phase contraposition of spherical depression portion, described voice coil loudspeaker voice coil is socketed on the periphery in spherical depression portion, described anti-ball top vibrating diaphragm is mutually bonding with voice coil loudspeaker voice coil between spherical depression portion with sphere protuberance, the ball top of described anti-ball top vibrating diaphragm is adjacent with spherical depression portion, described bugle is located in drive magnet group by phase plug group seat.

2. a kind of anti-ball top as claimed in claim 1 bugle high pitch loudspeaker, it is characterized in that: described drive magnet group comprises the first magnetic conduction annulated column, the second magnetic conduction annulated column, the 3rd magnetic conduction annulated column and has the U iron of central axis hole, the first acoustical cotton is filled with in the central axis hole of described U iron, described first magnetic conduction annulated column is positioned at U iron and is socketed on the first acoustical cotton, mutually bonding with phase plug group on the end face that U iron is located at by described 3rd magnetic guiding loop column base, described second magnetic guiding loop column base to be located on the first magnetic conduction annulated column and to be positioned at the 3rd magnetic conduction annulated column;

Described spherical depression portion is formed at the end face center of the second magnetic conduction annulated column, the center, ball top in described spherical depression portion offers the through hole communicated with the first acoustical cotton, described voice coil loudspeaker voice coil is between the second magnetic conduction annulated column and the 3rd magnetic conduction annulated column, and described bugle is located on the 3rd magnetic conduction annulated column by phase plug group seat.

3. a kind of anti-ball top as claimed in claim 2 bugle high pitch loudspeaker, is characterized in that: the surface in described spherical depression portion is pasted with the second acoustical cotton.

4. a kind of anti-ball top as claimed in claim 3 bugle high pitch loudspeaker, it is characterized in that: between the outside wall surface of described first magnetic conduction annulated column and the internal face of U iron, be filled with the 3rd acoustical cotton, the top of described 3rd acoustical cotton, between the outside wall surface and the internal face of the 3rd magnetic conduction annulated column of the second magnetic conduction annulated column, be formed with sound chamber.

5. the anti-ball top of the one according to any one of claim 1-4 bugle high pitch loudspeaker, it is characterized in that: described phase plug group comprises phase place plug ring and phase plug, described phase plug is socketed in phase place plug ring, described sphere protuberance is formed at the place of bottom center of phase plug, and described bugle is located in drive magnet group by phase plug ring seat.

6. a kind of anti-ball top as claimed in claim 5 bugle high pitch loudspeaker, is characterized in that: the end face of described phase plug is formed with several leading note pillars.

7. a kind of anti-ball top as claimed in claim 6 bugle high pitch loudspeaker, is characterized in that: be also clamped with sound membrane support between described phase place plug ring and drive magnet group, and the edge of described anti-ball top vibrating diaphragm is fixed on sound membrane support.