CN211702378U

CN211702378U - U iron assembly, magnetic circuit system, loudspeaker and sound device

Info

Publication number: CN211702378U
Application number: CN202020715162.4U
Authority: CN
Inventors: 谢殿琴
Original assignee: Nanchang Meishengyuan Trading Co ltd
Current assignee: Nanchang Meishengyuan Trading Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-10-16
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a U iron subassembly, magnetic circuit, loudspeaker and audio equipment belongs to loudspeaker technical field, and the U iron subassembly includes: the U-shaped iron is provided with a magnet mounting position for mounting a magnet of the loudspeaker on the inner bottom wall; the opening part of U iron is located to the utmost point piece portion, lid, offers the through-hole of putting into that the voice coil loudspeaker voice coil that is used for supplying loudspeaker to pass on the utmost point piece portion, and the position of putting into the through-hole is corresponding with the position that the position was installed to magnet. The utility model discloses a U iron subassembly can make the magnetic force of magnet concentrate on the through-hole department of putting into of pole piece portion, does the cutting magnetism and feels the line motion in putting into the through-hole to do to the voice coil loudspeaker voice coil, can effectively improve tone quality to can effectively improve the flexibility of voice coil loudspeaker voice coil activity from top to bottom.

Description

U iron assembly, magnetic circuit system, loudspeaker and sound device

Technical Field

The utility model relates to a loudspeaker technical field especially relates to a U iron subassembly, magnetic circuit, loudspeaker and audio equipment.

Background

When different electronic energy is transmitted to the coil, the coil generates energy to interact with the magnetic field of the magnet, and the interaction causes the paper disc to vibrate.

The horn typically includes a frame, a vibration system, and a magnetic circuit system. The vibration system generally includes a corrugated rim, a diaphragm (also called a cone or a cone), a voice coil, a damper, etc., the internal magnetic circuit system generally includes a U-iron, a magnet, a washer, etc., and has a small leakage magnetic field, and the external magnetic circuit system generally includes a T-iron, a magnet, a washer, etc., and has a large leakage magnetic field. Wherein the T iron and the U iron mainly play a role of magnetic conduction. The existing U-shaped iron is cup-shaped, and after the magnet is arranged in the U-shaped iron, a magnetic field is guided to the other magnetic pole of the magnet along the bottom wall and the side wall of the U-shaped iron along one magnetic pole connected with the magnet and the U-shaped iron.

Fig. 1 shows a schematic structural diagram of a magnetic circuit system in the prior art, as shown in fig. 1, the existing U-iron is after arranging the magnet, a voice coil moving gap for the voice coil to be inserted and move is formed between the inner side walls of the magnet and the U-iron, the gap is small, the magnetic field of the magnet is along the bottom wall of the U-iron at one magnetic pole, the side wall guides to the other magnetic pole, the magnet is easily influenced by the magnet and directly guides to the magnet at the middle part or the upper part of the side wall of the U-iron, the magnetic field is dispersed comparatively, the magnetic force is not concentrated, the horn tone quality is influenced, meanwhile, because the gap between the magnet and the U-iron is small, the voice coil is influenced by air pressure when moving up and down in the gap and the reaction.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a U-iron assembly, a magnetic circuit system, a speaker and a sound device, which can solve the technical problem of the prior art that the U-iron magnetic conduction is dispersed and the speaker tone quality is not ideal enough.

In order to achieve the above object, according to an aspect of the present invention, there is provided a U-iron assembly for a speaker, the U-iron assembly comprising: the U-shaped iron is provided with a magnet mounting position for mounting a magnet of the loudspeaker on the inner bottom wall; the opening part of U iron is located to the utmost point piece portion, the lid, offer on the utmost point piece portion and be used for supplying the voice coil loudspeaker voice coil passes puts into the through-hole, put into the through-hole the position with the position of position is corresponding is installed to magnet.

In one embodiment, the distance between the inner side wall of the U-iron and the magnet of the horn disposed on the magnet mounting site is much greater than the side wall thickness of the voice coil of the horn.

In one embodiment, the U-shaped iron is in a conical bowl shape which is gradually reduced from the opening of the U-shaped iron to the bottom of the U-shaped iron.

In one embodiment, a groove body is concavely arranged on the outer bottom wall of the U-shaped iron; the position of the groove body corresponds to the position of the magnet mounting position.

In one embodiment, the pole piece portion is provided with a threaded through hole.

In one embodiment, a mounting groove is arranged on the side wall of the U-shaped iron opening; the pole piece part is arranged in the mounting groove.

According to another aspect of the present invention, there is provided a magnetic circuit system, including: the U-iron assembly of any one of the above; the magnet is arranged on a magnet mounting position inside the U iron of the U iron assembly; the magnet and the through-hole of putting into of the polar plate portion of U iron subassembly form the annular gap that the voice coil loudspeaker voice coil of confession loudspeaker passed, the magnet with the distance between the inside lateral wall of U iron is far greater than the thickness of the voice coil loudspeaker voice coil.

In one embodiment, the magnetic circuit system further comprises a washer, and the washer is arranged on the magnet and close to the opening of the U-shaped iron.

According to another aspect of the present invention, there is provided a speaker, comprising: a support body; the vibration system is arranged on the support body; the magnetic circuit system is arranged on the support body; and the voice coil of the vibration system is embedded into the U-shaped iron of the magnetic circuit system through the embedding through hole of the magnetic circuit system.

According to the utility model discloses a still another aspect provides an audio device, audio device includes: a housing having a cavity disposed thereon; the horn extends into the cavity and is mounted on the shell.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a U-iron assembly, magnetic circuit, loudspeaker and audio device, through covering a pole piece portion at the opening part of U-iron, and set up the imbedding through-hole that supplies the voice coil loudspeaker to pass on the pole piece portion, and the position of imbedding the through-hole corresponds to the position of the magnet setting position inside the U-iron, the interval between voice coil and U-iron inner wall is opened the distance that has a pole piece portion, make to form between the inner wall of U-iron and the magnet not less than the distance of the width of imbedding through-hole inner wall to the outer fringe of pole piece portion, after setting up the magnet on the magnet setting position of U-iron, the magnetic field of magnet is led to the pole piece portion along the bottom wall of U-iron, behind the lateral wall by its one magnetic pole, and gather to imbedding through-hole edge and lead to the magnet along the pole piece portion, because the clearance between magnet and U-iron is great, the magnet influences lessly to U-iron lateral wall magnetic field, and can make magnetic force concentrate on the, do benefit to the voice coil loudspeaker voice coil and do the motion of cutting magnetic induction line putting into the through-hole, can effectively improve tone quality. Simultaneously, because of the clearance between magnet and the U iron is great for the inside cavity that forms of voice coil loudspeaker voice coil movable gap is great, receives the atmospheric pressure influence less when the voice coil loudspeaker voice coil moves about, can effectively improve the flexibility of voice coil loudspeaker voice coil activity from top to bottom, makes its activity response more rapid, thereby improves loudspeaker's audio.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic diagram of a prior art magnetic circuit system;

fig. 2 is a schematic structural diagram of a U-iron assembly provided in an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structural view of a U-iron provided in an embodiment of the present invention;

fig. 4 is a front view of a U-iron provided in an embodiment of the present invention;

fig. 5 is a top view of a U-iron provided in an embodiment of the present invention;

fig. 6 is a perspective view of one of the U-shaped iron members provided in the embodiment of the present invention;

fig. 7 is a second perspective view of a U-iron provided in an embodiment of the present invention;

fig. 8 is a third perspective view of a U-iron provided in an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a magnetic circuit system provided in an embodiment of the present invention;

fig. 10 is a top view of a magnetic circuit system provided in an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a horn according to an embodiment of the present invention.

In the figure:

100. a U-iron assembly; 10. iron U; 101. a magnet setting position; 20. an electrode sheet portion; 201. placing the substrate into the through hole; 102. a trough body; 202. a threaded through hole; 103. mounting grooves; 200. a magnetic circuit system; 210. a magnet; 220. washer; 300. a horn; 310. a support body; 320. a vibration system; 321. vibrating diaphragm; 322. a voice coil; 323. folding the ring; 324. and (4) elastic wave.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In order to solve the technical problem that U iron magnetic conduction dispersion leads to loudspeaker tone quality ideal inadequately among the prior art, the application provides a U iron subassembly, magnetic circuit, loudspeaker and audio equipment.

The present invention will be further explained with reference to the accompanying drawings.

Example 1

As shown in fig. 2, the present embodiment provides a U-iron assembly 100, the U-iron assembly 100 is applied to a horn, and the U-iron assembly 100 includes a U-iron 10 and a pole piece portion 20.

As shown in fig. 3 to 8, the U-shaped iron 10 is a cup or a bowl with an opening, the magnet mounting position 101 for mounting the magnet 210 of the speaker is disposed on the inner bottom wall of the U-shaped iron 10, and the magnet mounting position 101 may be directly the inner bottom wall of the U-shaped iron 10 without any protrusion or recess, or may be a boss or a recessed groove protruding from the inner bottom wall of the U-shaped iron, as long as the magnet can be fixedly mounted. The distance between the inner side wall of the U-iron 10 and the magnet 210 of the horn disposed on the magnet mounting site 101 is much larger than the thickness of the side wall of the voice coil of the horn.

The pole piece portion 20 covers the opening of the U-shaped iron 10, and the pole piece portion 20 can be fixedly connected with the U-shaped iron 10 by bonding, connecting by fasteners such as screws, or connecting with the inner wall of the U-shaped iron in a threaded fit manner, but is not limited thereto. The pole piece part 20 is provided with an embedding through hole 201 for the voice coil of the loudspeaker to pass through, the position of the embedding through hole 201 corresponds to the position of the magnet installation position 101, and after the magnet of the loudspeaker is arranged at the magnet installation position 101, the outer diameter of the magnet is smaller than the inner diameter of the embedding through hole 201, so that a gap for the voice coil to pass through and move is formed between the magnet and the embedding through hole 201.

As can be seen from the above, in the U-iron assembly provided in the present embodiment, by covering the opening of the U-iron 10 with the pole piece portion 20, an embedding through hole 201 for the voice coil of the loudspeaker to pass through is arranged on the pole piece part 20, the position of the embedding through hole 201 corresponds to the position of the magnet placing position 101 in the U-shaped iron, the voice coil and the inner wall of the U-shaped iron 10 are separated by the distance of the pole piece part 20, so that a distance not less than the width from the inner wall of the insertion through hole 201 to the outer edge of the pole piece part 20 is formed between the inner wall of the U-shaped iron 10 and the magnet, after the magnet is arranged on the magnet arrangement position 101 of the U-shaped iron 10, the magnetic field of the magnet is guided to the pole piece part 20 from one magnetic pole along the bottom wall and the side wall of the U-shaped iron 10, and gather in putting into through-hole 201 edge and lead to magnet along pole piece portion 20, because the clearance between magnet and U indisputable 10 is great, magnet is less to U indisputable 10 lateral wall magnetic conduction influence, does benefit to magnetic force and concentrates to lead to pole piece portion 20 and gather in putting into through-hole 201 department. Through the cooperation of pole piece portion 10 and U indisputable 10, can make the magnetic force of magnet concentrate on the through-hole department of putting into of pole piece portion, do the motion of cutting magnetic induction line in putting into through-hole 201 by the voice coil loudspeaker voice coil, can effectively improve tone quality. Simultaneously, because of the clearance between magnet and the U iron 10 is great for the inside cavity that forms of voice coil loudspeaker voice coil movable gap is great, receives the atmospheric pressure influence less when the voice coil loudspeaker voice coil moves about, can effectively improve the flexibility of voice coil loudspeaker voice coil activity from top to bottom, makes its activity response more rapid, thereby improves loudspeaker's audio.

As shown in fig. 3 and 4, in this embodiment, the U-bar 10 is in a tapered bowl shape that gradually decreases from the opening of the U-bar 10 to the bottom of the U-bar 10, and thus, a sufficient distance may be provided between the inner wall of the U-bar 10 and the magnet at the middle upper portion without affecting the magnetic conductivity of the side wall of the U-bar and the voice coil can be inserted into the space with a large enough movement, so that the voice coil occupies a small external space and is beautiful.

The shape of the U-shaped iron 10 is not limited to this, and the U-shaped iron 10 may alternatively have other shapes such as a columnar shape and a spherical shape.

In this embodiment, the outer bottom wall of the U-shaped iron 10 is recessed with a groove 102, and the position of the groove 102 corresponds to the position of the magnet installation position 101. By adopting the arrangement, the thickness of the U iron 10 around the slot body 102 is larger than that of the bottom wall of the slot body 102 (namely the back of the magnet mounting position 101), the magnetic force of the magnet mounted on the magnet mounting position 101 is guided to the side wall of the U iron 10 by the bottom wall of the U iron 10 rapidly and intensively, and the magnetic force of the magnet is concentrated on the side wall of the U iron 10 and is matched with the pole piece part 20.

It should be noted that the bottom wall structure of the U-shaped iron 10 is not limited to this, and alternatively, the outer bottom wall of the U-shaped iron 10 is recessed into the U-shaped iron 10 as the trough 102, and at the same time, the inner bottom of the U-shaped iron 10 is arched, which not only facilitates the placement of the magnets, but also facilitates the concentrated guiding of the magnetic field of the magnets along the periphery thereof to the side wall of the U-shaped iron 10. Of course, the bottom wall of the U-shaped iron 10 may be flat plate-shaped without providing the groove.

In this embodiment, the mounting groove 103 is provided on the side wall of the opening of the U-shaped iron 10, and even if the end edge of the side wall of the U-shaped iron 10 forms a step shape, the pole piece portion 20 is disposed in the mounting groove 103. Set up more than adopting, not only do benefit to the quick location of pole piece portion 20 and settle on U indisputable 10, and make the diapire of this mounting groove 103 and the contact of pole piece portion 20 lower surface and the lateral wall contact of the lateral wall of mounting groove 103 and pole piece portion 20, big with pole piece portion 20 area of contact, do benefit to the magnetic force of U indisputable 10 and lead to pole piece portion 20 and make magnetic force concentrate.

It should be noted that the fitting between the pole piece portion 20 and the U-shaped iron 10 is not limited to this, and alternatively, the outer edge of the pole piece portion 20 may be directly connected to the inner wall of the U-shaped iron 10, or the lower surface of the pole piece portion 20 may be directly pressed against the upper edge of the U-shaped iron 10 to be connected to the U-shaped iron 10.

The pole piece portion 20 can be adhered to the mounting groove 103 by an adhesive, but is not limited thereto, the pole piece portion 20 can be engaged with the mounting groove 103, or the pole piece portion 20 can be fixed to the mounting groove 103 by a fastener, or an internal thread can be provided on the side wall of the mounting groove 103, and an external thread is provided on the outer side wall of the pole piece portion 20, so that the pole piece portion 20 is in threaded fit with the mounting groove 103.

In this embodiment, the pole piece portion 20 is provided with a threaded through hole 202. When installing the U iron subassembly on the basin frame or the supporter of loudspeaker, can pass basin frame or supporter and screw in screw through hole 202 through screw or bolt etc to install the U iron subassembly on the basin frame or the supporter of loudspeaker, it is convenient to install, and easily dismouting.

Example 2

As shown in fig. 9 and 10, the present embodiment provides a magnetic circuit system, and the magnetic circuit system 200 includes the magnet 210 and the U-iron assembly 100 of any one of embodiments 1.

The magnet 210 is provided on the magnet mounting position 101 inside the U-iron 10 of the U-iron assembly 100. An annular gap for the voice coil of the horn to pass through is formed between the magnet 210 and the insertion through hole 201 of the pole piece portion 20 of the U-iron assembly 100, and the distance between the magnet 210 and the inner side wall of the U-iron 10 is far larger than the thickness of the voice coil of the horn.

In this embodiment, the magnetic circuit system 200 further includes a washer 220, the washer 220 is disposed on the magnet 210 near the opening of the U-shaped iron 10, and the washer 220 is disposed in the insertion through hole 201.

Since the magnetic circuit system of this embodiment employs the U-iron assembly in embodiment 1, the magnetic circuit system also has the beneficial effects brought by the technical solution of the U-iron assembly in embodiment 1, and reference may be made to embodiment 1, and details are not described here.

Example 3

As shown in fig. 11, the present embodiment provides a horn, and the horn 300 includes a supporting body 310, a vibration system 320, and the magnetic circuit system 200 in embodiment 2.

The support body 310 serves as a mounting support for mounting the vibration system and the magnetic circuit system 200 thereon, and may be a basin stand or other support body capable of mounting and combining the vibration system and the magnetic circuit system 200.

The vibration system 320 is disposed on the support 310, and the vibration system 320 may include a diaphragm 321 (also called a cone or a cone), a voice coil 322 connected to the diaphragm 321, an elastic wave 324 connected to the voice coil 322 or the diaphragm 321, and a corrugated rim 323 connected to the diaphragm 321, but is not limited thereto, and in some specific cases, the elastic wave may not be disposed.

The magnetic circuit 200 is provided on the support, and the voice coil of the vibration system is inserted into the U-bar 10 of the magnetic circuit 200 through the insertion through hole 201 of the magnetic circuit 200. When current passes through the coil on the voice coil, the voice coil moves in the space formed between the U-shaped iron 10 and the magnet 210 through the insertion through hole 201, and drives the diaphragm to vibrate, thereby making a sound.

It should be noted that the support body and the vibration system may be a support body and a vibration system of a horn with any shape structure in the prior art, which is not limited herein, and the present embodiment is mainly characterized in that the magnetic circuit system of the horn adopts the magnetic circuit system in embodiment 2, so that the present embodiment has the beneficial effects brought by the technical solutions of the U-iron assembly in embodiment 1 and the magnetic circuit system in embodiment 2, and no further description is provided herein.

Example 4

This embodiment provides an acoustic apparatus including a housing and the horn of embodiment 3. The shell is provided with a cavity, and the horn extends into the cavity and is arranged on the shell. Since the loudspeaker in embodiment 3 is adopted in the sound device, the sound device also has the beneficial effects brought by the technical scheme of the U-iron assembly, the magnetic circuit system and the loudspeaker in the above embodiments, and details are not repeated herein.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a U indisputable subassembly, is applied to on the loudspeaker, its characterized in that, U indisputable subassembly includes:

the U-shaped iron is provided with a magnet mounting position for mounting a magnet of the loudspeaker on the inner bottom wall;

the opening part of U iron is located to the utmost point piece portion, the through-hole of putting into that the voice coil loudspeaker voice coil that is used for supplying loudspeaker to pass is offered on the utmost point piece portion, put into the through-hole the position with the position of position is corresponding is installed to magnet.

2. The U-iron assembly of claim 1, wherein:

the distance between the inner side wall of the U-shaped iron and the magnet of the loudspeaker arranged on the magnet arrangement position is far larger than the thickness of the side wall of the voice coil of the loudspeaker.

3. The U-iron assembly of claim 1, wherein:

the U iron is in a conical bowl shape which is gradually reduced from the opening of the U iron to the bottom of the U iron.

4. The U-iron assembly of claim 1, wherein:

a groove body is concavely arranged on the outer bottom wall of the U iron;

the position of the groove body corresponds to the position of the magnet mounting position.

5. The U-iron assembly of claim 1, wherein:

the pole piece part is provided with a threaded through hole.

6. The U-iron assembly of any one of claims 1-5, wherein:

an installation groove is formed in the side wall of the U-shaped iron opening;

the pole piece part is arranged in the mounting groove.

7. A magnetic circuit system, comprising:

the U-iron assembly of any one of claims 1-6;

the magnet is arranged on a magnet mounting position inside the U iron of the U iron assembly;

the magnet and the through-hole of putting into of the polar plate portion of U iron subassembly form the annular gap that the voice coil loudspeaker voice coil of confession loudspeaker passed, the magnet with the distance between the inside lateral wall of U iron is far greater than the thickness of the voice coil loudspeaker voice coil.

8. The magnetic circuit system of claim 7, further comprising:

and the washer is arranged on the magnet and close to the opening of the U-shaped iron.

9. A horn, comprising:

a support body;

the vibration system is arranged on the support body;

the magnetic circuit system of claim 7 or 8, disposed on the support body;

and the voice coil of the vibration system is embedded into the U-shaped iron of the magnetic circuit system through the embedding through hole of the magnetic circuit system.

10. An audio device, characterized in that the audio device comprises:

a housing having a cavity disposed thereon;

the horn of claim 9, said horn mounted to said housing extending into the interior of said cavity.