Medium-bass loudspeaker

Abstract

The utility model provides a mid-bass horn. The mid-bass horn comprises a support, a conical vibrating diaphragm, a folding ring, a centering piece, a voice coil, a dustproof cover, a magnetic conductive plate, a main magnet, T-shaped iron and an auxiliary magnet. The folding ring is arranged at the upper end of the support, the centering piece is arranged at the lower end of the support, and the conical vibrating diaphragm is located between the folding ring and the centering piece. The conical vibrating diaphragm is connected with the folding ring and the voice coil, a center hole of the centering piece is connected with the voice coil, and the dustproof cover covers the upper portion of the voice coil. The magnetic conductive plate, the main magnet, the T-shaped iron and the auxiliary magnet are sequentially connected to the lower portion of the support from top to bottom, a positioning protruding part is arranged in the center area of the lower surface of the T-shaped iron in a downward protruding mode, a second through hole is formed in the middle of the auxiliary magnet, and the positioning protruding part is embedded into the upper end of the second through hole. According to the mid-bass horn, through structure optimization, larger magnetic flux can be provided, larger vibration diaphragm movement is driven, and the mid-bass acoustic effect is improved.

Description

Technical Field

[0001] This application relates to the technical field of loudspeakers, and particularly to a mid-bass loudspeaker. Background Art

[0002] Existing mid-bass loudspeakers usually consist of a diaphragm, a voice coil, a magnetic circuit system, a bracket, etc. Among them, the diaphragm is responsible for converting electrical signals into sound waves, and the voice coil vibrates in a magnetic field under the drive of an electrical signal to generate sound wave output.

[0003] However, existing mid-bass loudspeakers have certain deficiencies in design and structure. For example, the cooperation between the voice coil and the magnetic conductive plate is not tight enough, resulting in low vibration efficiency; the magnetic circuit system requires precise positioning and has many assembly production processes; the structure of the bracket is not optimized enough, affecting the sound wave propagation effect, etc.

[0004] Therefore, how to optimize the structure of mid-bass loudspeakers and improve production efficiency and acoustic performance is an urgent problem to be solved currently. Utility Model Content

[0005] In order to overcome the defects of the above-mentioned prior art, this application provides a mid-bass loudspeaker, which improves the structural accuracy and acoustic performance through structural optimization.

[0006] This application provides a mid-bass loudspeaker, which includes a bracket, a conical diaphragm, a surround, a centering piece, a voice coil, a dust cap, a magnetic conductive plate, a main magnet, a T-shaped iron, and an auxiliary magnet; the surround is arranged at the upper end of the bracket, the centering piece is arranged at the lower end of the bracket, and the conical diaphragm is located between the surround and the centering piece; a central hole is provided in the central area of the centering piece, the conical diaphragm includes an upper flared part and a lower tapered part, the outer periphery of the upper flared part of the conical diaphragm is connected to the inner periphery of the surround, the inner periphery of the lower tapered part of the conical diaphragm is connected to the voice coil, the central hole of the centering piece is connected to the voice coil, the dust cap is connected to the inner surface of the conical diaphragm and covers the upper part of the voice coil; the magnetic conductive plate, the main magnet, the T-shaped iron, and the auxiliary magnet are sequentially connected and arranged at the lower part of the bracket from top to bottom, a magnetic conductive hole is provided in the middle of the magnetic conductive plate, a first through hole is provided in the middle of the main magnet, and the voice coil passes through the magnetic conductive hole and the first through hole; an inner column protrudes upward from the upper surface of the T-shaped iron, and the inner column penetrates through the magnetic conductive hole and the first through hole and extends into the interior of the voice coil; a positioning convex part protrudes downward from the central area of the lower surface of the T-shaped iron, a second through hole is provided in the middle of the auxiliary magnet, and the positioning convex part is fitted with the upper end of the second through hole.

[0007] In an alternative implementation, a positioning groove is provided in the central part of the lower surface of the T-shaped iron.

[0008] In an alternative implementation, the magnetic conductive hole, the first through hole, and the second through hole are coaxially arranged.

[0009] In an alternative implementation, the voice coil includes an annular columnar skeleton and a coil disposed on the outer periphery of the skeleton. The height of the coil is greater than the thickness of the magnetic conductive plate, and the coil is matched with the magnetic conductive hole.

[0010] In an alternative implementation, the bracket includes a first chamber and a second chamber. The first chamber is formed by enclosing the inner wall of the bracket, the outer surface of the conical diaphragm, and the upper surface of the centering piece. The second chamber is formed by enclosing the bottom plate of the bracket, the lower surface of the centering piece, and the outer surface of the voice coil. The bracket is provided with a plurality of upper air holes communicating with the first chamber and a plurality of lower air holes communicating with the second chamber.

[0011] According to the technical solution provided by the foregoing implementation, the provided mid-bass loudspeaker has at least the following advantages:

[0012] (1) Through structural optimization, a larger magnetic flux can be provided to drive a larger diaphragm movement and improve the mid-bass acoustic effect.

[0013] (2) Through the positioning cooperation of the positioning convex portion and the second through hole, the alignment accuracy of the T-shaped iron and the auxiliary magnet is improved, and the die alignment process in assembly production is reduced, thereby improving the production efficiency.

[0014] (3) By improving the bracket structure, the propagation of sound waves is effectively regulated, resonance interference is reduced, and the sound quality effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a cross-sectional view of a mid-bass loudspeaker provided by an embodiment of the present application.

[0017] Figure 2 It is a structural schematic diagram of a mid-bass loudspeaker provided by an embodiment of the present application.

[0018] Figure 3 It is a structural schematic diagram of a mid-bass loudspeaker from another angle provided by an embodiment of the present application.

[0019] Figure 4 It is an exploded view of a mid-bass loudspeaker provided by an embodiment of the present application.

[0020] Figure 5 It is a structural schematic diagram of the T-shaped iron and the auxiliary magnet of a mid-bass loudspeaker provided by an embodiment of the present application.

[0021] Figure 6 For Figure 1 the enlarged view of part A in

[0022] Figure 7 This is a schematic diagram of the bracket structure of the mid - bass loudspeaker provided by an embodiment of the present application.

[0023] Explanation of reference numerals:

[0024] 1, Bracket; 2, Conical diaphragm; 3, Surround; 4, Spider; 5, Voice coil; 6, Dust cap; 7, Pole piece; 8, Main magnet; 9, T - iron; 10, Auxiliary magnet; 11, Terminal.

[0025] 101, First chamber; 102, Second chamber; 103, Upper air hole; 104, Lower air hole; 201, Upper flared part; 202, Lower constricted part; 401, Central hole; 501, Skeleton; 502, Coil; 701, Magnetic conduction hole; 801, First through - hole; 901, Inner column; 902, Positioning convex part; 903, Positioning groove; 1001, Second through - hole. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0027] In this article, terms such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0028] In addition, in this article, orientation terms such as "upper" and "lower" are defined relative to the orientation of the structural schematic diagram in the accompanying drawings. It should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and they can change accordingly with the change of the orientation in which the structure is placed.

[0029] Please refer to Figures 1 to 7 , the present application provides a mid - bass loudspeaker, which simplifies the assembly process, improves the structural performance, and improves the acoustic effect through structural optimization.

[0030] Combined with Figures 1 to 4, in the present application, the mid-bass speaker includes a bracket 1, a conical diaphragm 2, a surround 3, a spider 4, a voice coil 5, a dust cap 6, a magnetic plate 7, a main magnet 8, a T-shaped iron 9, and a sub-magnet 10.

[0031] Specifically, the surround 3 is arranged at the upper end of the bracket 1, the spider 4 is arranged at the lower end of the bracket 1, and the conical diaphragm 2 is located between the surround 3 and the spider 4.

[0032] A central hole 401 is provided in the central area of the spider 4. The conical diaphragm 2 includes an upper flared portion 201 and a lower constricted portion 202. The outer periphery of the upper flared portion 201 of the conical diaphragm 2 is connected to the inner periphery of the surround 3, the inner periphery of the lower constricted portion 202 of the conical diaphragm 2 is connected to the voice coil 5, the central hole 401 of the spider 4 is connected to the voice coil 5, and the dust cap 6 is connected to the inner surface of the conical diaphragm 2 and covers the upper part of the voice coil 5.

[0033] Among them, the surround 3 has an upwardly convex annular portion, which can provide movable support for the up and down movement of the conical diaphragm 2 and ensure the stability of the up and down vibration of the conical diaphragm 2.

[0034] The conical diaphragm 2 is connected to the voice coil 5 and the surround 3, and can cooperate with the voice coil 5 to vibrate up and down under the limit connection of the surround 3 to generate an acoustic effect and emit mid-bass sound effects.

[0035] The spider 4 is circular and has a number of concentrically arranged raised rings, which can play a role in positioning the coaxial up and down movement of the voice coil 5.

[0036] Combined Figure 4 and Figure 6 As shown, in this embodiment, the voice coil 5 includes an annular columnar skeleton 501 and a coil 502 arranged on the outer periphery of the skeleton 501. The height of the coil 502 is greater than the thickness of the magnetic plate 7, and the coil 502 cooperates with the magnetic hole 701.

[0037] Specifically, the coil 502 and the inner wall of the magnetic hole 701 are in clearance fit.

[0038] By making the coil 502 and the magnetic hole 701 in clearance fit and reducing the clearance, the clearance distance between the inner column 901 of the T-shaped iron 9 and the magnetic plate 7 can be further reduced, so that the power required for the movement of the voice coil 5 is reduced, and magnetic circuit distortion can be reduced, increasing the sound cleanliness in terms of listening.

[0039] Combined Figures 1 to 3As shown, the magnetic conduction plate 7, the main magnet 8, the T-shaped iron 9, and the auxiliary magnet 10 are sequentially connected and arranged from top to bottom at the lower part of the bracket 1. A magnetic conduction hole 701 is provided in the middle of the magnetic conduction plate 7, and a first through hole 801 is provided in the middle of the main magnet 8. The voice coil 5 passes through the magnetic conduction hole 701 and the first through hole 801. An inner column 901 protrudes upward from the upper surface of the T-shaped iron 9. The inner column 901 penetrates through the magnetic conduction hole 701 and the first through hole 801 and extends into the interior of the voice coil 5.

[0040] Among them, the magnetic conduction plate 7, the main magnet 8, the T-shaped iron 9, and the auxiliary magnet 10 constitute a magnetic circuit system. The main magnet 8 and the auxiliary magnet 10 are permanent magnets, and the magnetic field formed by them can cooperate with the voice coil 5 to generate a driving force. Through the cooperation of the main magnet 8 and the auxiliary magnet 10, the overall magnetic flux can be increased, which helps to improve the power of the speaker and drive a larger diaphragm to move.

[0041] The main functions of the T-shaped iron 9 and the magnetic conduction plate 7 are to conduct magnetism, which helps to adjust the distribution of magnetic lines of force.

[0042] Combined with Figure 5 As shown, in this embodiment, a positioning convex portion 902 protrudes downward from the central region of the lower surface of the T-shaped iron 9. A second through hole 1001 is provided in the middle of the auxiliary magnet 10. The positioning convex portion 902 is fitted with the upper end of the second through hole 1001. Through the cooperative setting of the positioning convex portion 902 and the second through hole 1001, the T-shaped iron 9 and the auxiliary magnet 10 can be accurately positioned, and the template positioning in the assembly process is simplified.

[0043] Combined with Figure 5 As shown, a positioning groove 903 is provided in the central part of the lower surface of the T-shaped iron 9. When magnetizing the main magnet 8 and the auxiliary magnet 10, through the setting of the positioning groove 903, the mid-bass speaker can be accurately placed at a preset position for magnetizing operation.

[0044] Combined with Figure 1 As shown, in this embodiment, the magnetic conduction hole 701, the first through hole 801, and the second through hole 1001 are coaxially arranged. Through the coaxial arrangement, the magnetic lines of force can be reasonably arranged, so that the voice coil 5 can vibrate more stably, improving the vibration efficiency and sound quality effect.

[0045] Combined with Figure 1 As shown, in this embodiment, the aperture of the first through hole 801 is larger than the aperture of the second through hole 1001.

[0046] Combined with Figure 2 and Figure 3 As shown, the bracket 1 is provided with a wiring terminal 11 electrically connected to the outside.

[0047] The terminal 11 is used to connect with an external power supply line to provide the current signal received by the speaker for operation; the terminal 11 is also electrically connected to the coil 501 of the voice coil 5 to provide the operating current for the voice coil 5, so that the voice coil 5 generates a magnetic field. The magnetic field generated by the voice coil 5 drives the voice coil 5 to vibrate up and down under the coupling action of the magnetic circuit system, and then drives the conical diaphragm 2 to vibrate to emit sound.

[0048] In this embodiment, in order to provide clear and accurate audio performance, the conical diaphragm 2 is made of aramid fiber film, Kevlar fiber film or ultra-high molecular weight polyethylene fiber film. Through the selection of specific fiber films, the mid-bass speaker can withstand greater power, is suitable for playing large dynamic music, and has good transient response, can quickly respond to audio changes, and has excellent playback effects.

[0049] Specifically, the Kevlar fiber film is a thin film product made of Kevlar material. Kevlar (KEVLAR) is a brand name of an aramid fiber material product developed by DuPont Company in the United States. The original name of the material is "poly(p-phenyleneterephthalamide)", and the repeating unit of the chemical formula is -[-CO-C6H4-CONH-C6H4-NH-]-. The amide groups attached to the benzene ring are in the para structure.

[0050] The ultra-high molecular weight polyethylene film is a film product made of ultra-high molecular weight polyethylene. The English name of the ultra-high molecular weight polyethylene film is ultra-high molecular weight polyethylene (abbreviated as UHMWPE), which is a linear polyethylene without branches with a molecular weight of more than 1.5 million. Molecular formula: —(—CH2-CH2—)—n—, density: 0.920~0.964g / cm 3 . Heat distortion temperature (0.46MPa) 85℃, melting point 130~136℃.

[0051] Combined Figure 7 As shown, in this embodiment, the bracket 1 includes a first chamber 101 and a second chamber 102. The first chamber 101 is enclosed by the inner wall of the bracket 1, the outer surface of the conical diaphragm 2 and the upper surface of the centering piece 4. The second chamber 102 is enclosed by the bottom plate of the bracket 1, the lower surface of the centering piece 4 and the outer surface of the voice coil 5. The bracket 1 is provided with a number of upper air holes 103 communicating with the first chamber 101 and a number of lower air holes 104 communicating with the second chamber 102.

[0052] Through the settings of the first chamber 101 and the second chamber 102, and the functions of the upper air holes 103 and the lower air holes 104, the propagation of sound waves can be effectively adjusted to improve the sound quality effect.

[0053] In this embodiment, the total area of the upper air holes 103 is larger than the total area of the lower air holes 104. By setting the difference in the ventilation areas of the upper air holes 103 and the lower air holes 104, sound waves can be propagated more evenly, improving the sound quality effect.

[0054] The mid-bass speaker provided by the embodiment of the present application has been introduced in detail above. Specific embodiments are used to explain the principle and implementation manner of the present application. The above description is only used to help understand the method and its core mechanism of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A mid-bass speaker, characterized in that: The mid-bass speaker comprises a bracket, a cone diaphragm, a folding ring, a centering piece, a voice coil, a dust cover, a magnetic conductive plate, a main magnet, a T-shaped iron and a secondary magnet; The folding ring is arranged at the upper end of the bracket, the centering piece is arranged at the lower end of the bracket, and the conical diaphragm is located between the folding ring and the centering piece; A center hole is provided in the center area of ​​the centering piece, the cone-shaped diaphragm includes an upper expansion opening and a lower contraction opening, the outer periphery of the upper expansion opening of the cone-shaped diaphragm is connected to the inner periphery of the folding ring, the inner periphery of the lower contraction opening of the cone-shaped diaphragm is connected to the voice coil, the center hole of the centering piece is connected to the voice coil, and the dust cover is connected to the inner surface of the cone-shaped diaphragm and covers the upper part of the voice coil; The magnetic conductive plate, the main magnet, the T-shaped iron and the auxiliary magnet are sequentially connected and arranged at the lower part of the bracket from top to bottom, a magnetic conductive hole is provided in the middle of the magnetic conductive plate, a first through hole is provided in the middle of the main magnet, and the voice coil is passed through the magnetic conductive hole and the first through hole; An inner column is protruding upward from the upper surface of the T-shaped iron, and the inner column passes through the magnetic conductive hole and the first through hole and extends into the interior of the voice coil; A positioning convex portion is protruding downward from the central area of ​​the lower surface of the T-shaped iron, a second through hole is provided in the middle of the auxiliary magnet, and the positioning convex portion is embedded with the upper end of the second through hole.

2. The mid-bass speaker according to claim 1, characterized in that: A positioning groove is provided at the center of the lower surface of the T-shaped iron.

3. The mid-bass speaker according to claim 1, characterized in that: The magnetic conductive hole, the first through hole and the second through hole are coaxially arranged.

4. The mid-bass speaker according to claim 3, characterized in that: The aperture of the first through hole is larger than the aperture of the second through hole.

5. The mid-bass speaker according to claim 1, characterized in that: The voice coil comprises an annular columnar frame and a coil arranged on the outer periphery of the frame, the height of the coil is greater than the thickness of the magnetic conductive plate, and the coil matches the magnetic conductive hole.

6. The mid-bass speaker according to claim 5, characterized in that: The coil and the inner wall of the magnetic conductive hole are clearance-matched.

7. The mid-bass speaker according to claim 5, characterized in that: The bracket is provided with a connection terminal electrically connected to the outside, and the connection terminal is also electrically connected to the coil.

8. The mid-bass speaker according to claim 1, characterized in that: The cone-shaped diaphragm is made of aramid fiber membrane, Kevlar fiber membrane or ultra-high molecular weight polyethylene fiber membrane.

9. The mid-bass speaker according to claim 1, characterized in that: The bracket includes a first chamber and a second chamber, the first chamber is formed by the inner wall of the bracket, the outer surface of the conical diaphragm and the upper surface of the centering piece, and the second chamber is formed by the bottom plate of the bracket, the lower surface of the centering piece and the outer surface of the voice coil. The bracket is provided with a plurality of upper air holes connected to the first chamber and a plurality of lower air holes connected to the second chamber.

10. The mid-bass speaker according to claim 9, characterized in that: The total area of ​​the upper air holes is greater than the total area of ​​the lower air holes.

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