Coaxial loudspeaker combining treble and bass

Abstract

The utility model belongs to the field of loudspeakers, particularly relates to a coaxial loudspeaker combining treble and bass, and aims to solve the problems that the magnetic flux density in a conventional treble magnetic circuit is still low and the sensitivity of a treble unit is difficult to improve, and provides the following scheme: the coaxial loudspeaker comprises a treble part and a bass part, the high-pitch part comprises a high-pitch magnet, a T-shaped high-pitch lower magnetic conductive plate, a high-pitch short-circuit copper ring and a high-pitch upper magnetic conductive plate, the high-pitch short-circuit copper ring is sleeved on a central column of the high-pitch lower magnetic conductive plate, and the high-pitch magnet is placed in the center of the upper surface of the high-pitch lower magnetic conductive plate and is fixed by glue; according to the utility model, the energy of each magnetic circuit is effectively improved, the magnetic flux density of a high-pitch magnetic circuit gap and a low-pitch magnetic circuit gap is increased, and the magnetic flux density of the magnetic circuit gaps is in direct proportion to the efficiency of the loudspeaker, so that the sensitivity of the loudspeaker can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a coaxial loudspeaker combining high and low frequencies. Background Art

[0002] The traditional coaxial speaker is composed of a bass magnetic circuit and a tweeter internal magnetic circuit. The tweeter magnetic circuit is located at the center of the bass coil. The tweeter coil and the bass coil are suspended in their respective magnetic gaps and connected to their respective diaphragms and auxiliary devices to form a coaxial speaker. Since the outer diameter of the tweeter internal magnetic magnet is limited by the diameter of the tweeter coil, although high-performance NdFeB magnets are used, the magnetic flux density in the tweeter magnetic circuit is still low, and there is a disadvantage that the sensitivity of the tweeter unit is difficult to improve. Therefore, a coaxial speaker combining treble and bass is proposed. Utility Model Content

[0003] The utility model aims to solve the problem that the magnetic flux density in the treble magnetic circuit is still low and the sensitivity of the treble unit is difficult to improve in the prior art, and proposes a coaxial loudspeaker combining treble and bass.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A coaxial loudspeaker combining treble and bass, comprising a treble part and a bass part, wherein the treble part comprises a treble magnet, a T-shaped treble lower magnetic conductive plate, a treble short-circuit copper ring, and a treble upper magnetic conductive plate, wherein the treble short-circuit copper ring is mounted on the central column of the treble lower magnetic conductive plate, the treble magnet is placed at the center of the upper surface of the treble lower magnetic conductive plate and fixed with glue, and the treble upper magnetic conductive plate is placed at the center of the surface of the treble magnet and fixed with glue;

[0006] The bass part includes a bass magnet, an upper bass magnetic conductive plate, a bass U-shaped magnetic conductive ring, and a bass short-circuit copper ring. The bass short-circuit copper ring is sleeved on the outer edges of the bass magnet and the upper bass magnetic conductive plate. The bass magnet is bonded to the inner center of the bass U-shaped magnetic conductive ring, and the upper bass magnetic conductive plate is bonded to the center of the bass magnet.

[0007] Stainless steel screws are provided between the treble lower magnetic conductive plate and the woofer U-shaped magnetic conductive ring, and the treble lower magnetic conductive plate and the woofer U-shaped magnetic conductive ring are fixed by the stainless steel screws;

[0008] The treble lower magnetic conductive plate, together with the treble magnet and the treble upper magnetic conductive plate, are tightly connected to the woofer upper magnetic conductive plate through stainless steel screws and together with the woofer magnet and the woofer U-shaped magnetic conductive ring, form a woofer magnetic circuit assembly and a treble magnetic circuit assembly;

[0009] The tweeter's magnetic circuit assembly uses a high-performance neodymium outer magnetic circuit structure, while the woofer's magnetic circuit assembly uses a high-performance neodymium inner magnetic circuit structure. The magnets in the two magnetic circuits have opposite polarities.

[0010] As a further solution of the utility model, the bass part also includes a first vibration component of the bass composed of a bass vibration diaphragm, a bass basin frame, a bass positioning plate, and a bass coil. The bass basin frame is fixed to the circumference of the bass U-shaped magnetic ring, and the circumference of the bass basin frame is installed with a bass wiring plate and a treble wiring plate. The bass coil is suspended in the center of the magnetic circuit gap formed by the bass upper magnetic plate, the treble lower magnetic plate and the bass U-shaped magnetic ring. The bass coil is bonded to the center of the bass vibration diaphragm and the bass positioning plate near the top, and the outer edges of the bass vibration diaphragm and the bass positioning plate are respectively bonded to the bass basin frame, and the bass coil is connected to the bass wiring plate through a bass lead.

[0011] As a further scheme of the utility model, the tweeter part also includes a second vibration component of the tweeter composed of a tweeter coil, a tweeter vibration membrane, a tweeter bracket, and a tweeter coil connecting wire. The tweeter coil is suspended at the center of the magnetic circuit gap formed by the lower magnetic conductive plate of the tweeter and the upper magnetic conductive plate of the tweeter. The top of the tweeter coil is connected to the tweeter vibration membrane by glue, the outer plane of the tweeter vibration membrane is bonded to the surface center of the tweeter bracket, and the tweeter coil is connected to the tweeter wiring piece through the tweeter coil connecting wire and the tweeter lead-out wire.

[0012] As a further solution of the utility model, a groove is provided on the back of the tweeter lower magnetic conductive plate for leading out the tweeter lead-out wire.

[0013] As a further solution of the utility model, the back space of the tweeter vibration membrane is filled with tweeter sound-absorbing cotton, and a tweeter horn is added to the outer edge of the tweeter vibration membrane. The tweeter horn and the bass vibration membrane together form a large tweeter horn.

[0014] As a further solution of the utility model, a screw gasket is provided on the circumference of the stainless steel screw.

[0015] In the present application, the magnetic circuit of the tweeter adopts a high-performance neodymium outer magnetic circuit structure, and the magnetic circuit of the woofer adopts a high-performance neodymium inner magnetic circuit structure. The magnets of the two magnetic circuits have opposite polarities. The lower magnetic conductive plate of the tweeter is located at the center of the surface of the upper magnetic conductive plate of the woofer and are locked together by stainless steel screws. The lower magnetic conductive plate of the tweeter and the upper magnetic conductive plate of the woofer together constitute the upper magnetic conductive plate of the woofer magnetic circuit and the lower magnetic conductive plate of the treble magnetic circuit. It can be seen that the tweeter magnet and the woofer magnet are equivalent to being connected in parallel with each other. Part of the magnetic lines of force of the bass magnet passes through the treble magnetic circuit gap, and part of the magnetic lines of force of the treble magnet passes through the bass magnetic circuit gap. This also increases the magnetic flux density of the treble magnetic circuit gap and the bass magnetic circuit gap. Since the magnetic flux density of the magnetic circuit gap is proportional to the efficiency of the speaker, this structure can effectively increase the utilization efficiency of the magnet and improve the sensitivity of the speaker.

[0016] Beneficial effects:

[0017] In the utility model, the coaxial loudspeaker combining treble and bass, through the coordinated use of treble magnets and bass magnets, the treble magnets and bass magnets are equivalent to being connected in parallel with each other, part of the magnetic force lines of the bass magnets pass through the treble magnetic circuit gap, and part of the magnetic force lines of the treble magnets pass through the bass magnetic circuit gap, which effectively improves the energy of each magnetic circuit and increases the magnetic flux density of the treble magnetic circuit gap and the bass magnetic circuit gap. Since the magnetic flux density of the magnetic circuit gap is proportional to the efficiency of the loudspeaker, this structure can effectively improve the sensitivity of the loudspeaker;

[0018] In the utility model, the coaxial loudspeaker combining high and low frequencies is provided with a treble horn on the outer edge of the treble vibration membrane, so that the treble horn and the bass vibration membrane together form a large treble horn, thereby increasing the sensitivity of the treble.

[0019] In the utility model, in the coaxial loudspeaker combining treble and bass, the treble magnet is equivalent to the auxiliary magnet of the woofer magnetic circuit assembly, thereby reducing the leakage magnetic flux of the woofer magnetic circuit assembly, and at the same time, the woofer magnet is equivalent to the auxiliary magnet of the treble magnetic circuit assembly, thereby reducing the leakage magnetic flux of the treble magnetic circuit assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic cross-sectional view of a coaxial loudspeaker combining high and low frequencies proposed by the utility model;

[0021] Figure 2 A coaxial loudspeaker with high and low frequencies is proposed in the utility model. Figure 1 A schematic diagram of the enlarged structure of point A;

[0022] Figure 3 The present invention is a schematic structural diagram of the magnetic force line distribution diagram of a coaxial loudspeaker combining high and low frequencies proposed by the present invention.

[0023] In the figure: 1. treble part; 2. bass part; 11. treble upper magnetic plate; 12. treble magnet; 13. treble lower magnetic plate; 14. treble short-circuit copper ring; 15. treble coil; 16. treble vibration membrane; 17. treble bracket; 18. treble horn; 19. treble sound-absorbing cotton; 21. bass vibration membrane; 22. bass basin bracket; 23. bass positioning plate; 24. bass coil; 25. bass short-circuit copper ring; 26. bass magnet; 27. bass upper magnetic plate; 28. bass U-shaped magnetic ring; 31. bass lead wire; 32. bass wiring piece; 33. treble lead wire; 34. treble wiring piece; 35. treble coil connecting wire; 41. stainless steel screw; 42. screw gasket. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Example 1

[0026] Reference Figure 1-Figure 3 A coaxial loudspeaker combining treble and bass, comprising: a treble part 1 and a woofer part 2, the treble part 1 comprising a treble magnet 12, a T-shaped treble lower magnetic conductive plate 13, a treble short-circuit copper ring 14, and a treble upper magnetic conductive plate 11, the treble short-circuit copper ring 14 is mounted on the central column of the treble lower magnetic conductive plate 13, the treble short-circuit copper ring 14 can effectively reduce the eddy current loss of the magnetic circuit and play a role in reducing treble distortion, the treble magnet 12 is placed at the center of the upper surface of the treble lower magnetic conductive plate 13 and fixed with glue, and the treble upper magnetic conductive plate 11 is placed at the center of the surface of the treble magnet 12 and fixed with glue;

[0027] The bass part 2 includes a bass magnet 26, a bass upper magnetic conductive plate 27, a bass U-shaped magnetic conductive ring 28, and a bass short-circuit copper ring 25. The bass short-circuit copper ring 25 is sleeved on the outer edges of the bass magnet 26 and the bass upper magnetic conductive plate 27. The bass magnet 26 is bonded to the inner center of the bass U-shaped magnetic conductive ring 28. The bass short-circuit copper ring 25 can effectively reduce the eddy current loss of the magnetic circuit and play an effect of reducing bass distortion. The bass upper magnetic conductive plate 27 is bonded to the center of the bass magnet 26.

[0028] A stainless steel screw 41 is provided between the treble lower magnetic conductive plate 13 and the bass U-shaped magnetic conductive ring 28, and the treble lower magnetic conductive plate 13 and the bass U-shaped magnetic conductive ring 28 are fixed by the stainless steel screw 41;

[0029] The treble lower magnetic conductive plate 13, together with the treble magnet 12 and the treble upper magnetic conductive plate 11, are closely connected to the bass upper magnetic conductive plate 27 through the stainless steel screws 41 and together with the bass magnet 26 and the bass U-shaped magnetic conductive ring 28, form a bass magnetic circuit assembly and a treble magnetic circuit assembly. A large number of magnetic lines of force of the treble magnet 12 pass through the bass magnetic circuit gap and then return to the treble magnetic circuit, and a large number of magnetic lines of force of the bass magnet 26 also pass through the treble magnetic circuit gap and then return to the bass magnetic circuit, which is equivalent to connecting two magnetic circuits in parallel, increasing the magnetic flux of each magnetic circuit gap, and especially effectively improving the magnetic field strength of the treble magnetic circuit gap;

[0030] The tweeter's magnetic circuit assembly uses a high-performance neodymium outer magnetic circuit structure, while the woofer's magnetic circuit assembly uses a high-performance neodymium inner magnetic circuit structure. The magnets in the two magnetic circuits have opposite polarities.

[0031] Reference Figure 1 and Figure 2The bass part 2 also includes a first vibration component of the bass composed of a bass vibration membrane 21, a bass basket 22, a bass positioning plate 23, and a bass coil 24. The bass basket 22 is fixed on the circumference of the bass U-shaped magnetic ring 28. The circumference of the bass basket 22 is installed with a bass wiring plate 32 and a treble wiring plate 34. The bass coil 24 is suspended in the center of the magnetic circuit gap composed of the bass upper magnetic plate 27, the treble lower magnetic plate 13 and the bass U-shaped magnetic ring 28. The bass coil 24 is bonded to the center of the bass vibration membrane 21 and the bass positioning plate 23 near the top. The outer edges of the bass vibration membrane 21 and the bass positioning plate 23 are respectively bonded to the bass basket 22. The bass coil 24 is connected to the bass wiring plate 32 through a bass lead 31. The bass basket 22 and the bass positioning plate 23 constitute a bass support component, which ensures that the bass coil 24 is suspended in the center of the bass magnetic circuit gap.

[0032] Reference Figure 1 and Figure 2 The tweeter part 1 also includes a second vibration component of the tweeter composed of a tweeter coil 15, a tweeter vibration membrane 16, a tweeter bracket 17, and a tweeter coil connecting wire 35. The tweeter coil 15 is suspended at the center of the magnetic circuit gap formed by the tweeter lower magnetic conductive plate 13 and the tweeter upper magnetic conductive plate 11. The top of the tweeter coil 15 is connected to the tweeter vibration membrane 16 by glue, and the outer plane of the tweeter vibration membrane 16 is bonded to the surface center of the tweeter bracket 17. The tweeter coil 15 is connected to the tweeter wiring piece 34 through the tweeter coil connecting wire 35 and the tweeter lead-out wire 33.

[0033] Example 2

[0034] refer to Figure 1-Figure 3 , based on Example 1, a coaxial loudspeaker combining high and low frequencies is improved,

[0035] Reference Figure 1 A groove is provided on the back of the tweeter lower magnetic conductive plate 13 for leading out the tweeter lead wire 33, and the groove is used to avoid squeezing the tweeter lead wire 33.

[0036] Reference Figure 1 The back space of the tweeter vibration membrane 16 is filled with tweeter sound-absorbing cotton 19, and a tweeter horn 18 is added to the outer edge of the tweeter vibration membrane 16. The tweeter horn 18 and the bass vibration membrane 21 together form a large tweeter horn to increase the sensitivity of the treble.

[0037] Reference Figure 1 A screw washer 42 is provided on the circumference of the stainless steel screw 41 , and the screw washer 42 increases the stability of the stainless steel screw 41 .

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coaxial loudspeaker combining high and low frequencies, comprising a high frequency part (1) and a low frequency part (2), characterized in that: The treble part (1) comprises a treble magnet (12), a T-shaped treble lower magnetic conductive plate (13), a treble short-circuit copper ring (14), and a treble upper magnetic conductive plate (11); the treble short-circuit copper ring (14) is mounted on the central column of the treble lower magnetic conductive plate (13); the treble magnet (12) is placed at the center of the upper surface of the treble lower magnetic conductive plate (13) and fixed with glue; and the treble upper magnetic conductive plate (11) is placed at the center of the surface of the treble magnet (12) and fixed with glue; The bass part (2) comprises a bass magnet (26), a bass upper magnetic conductive plate (27), a bass U-shaped magnetic conductive ring (28), and a bass short-circuit copper ring (25); the bass short-circuit copper ring (25) is sleeved on the outer edges of the bass magnet (26) and the bass upper magnetic conductive plate (27); the bass magnet (26) is bonded to the inner center of the bass U-shaped magnetic conductive ring (28); and the bass upper magnetic conductive plate (27) is bonded to the center of the bass magnet (26); A stainless steel screw (41) is provided between the treble lower magnetic conductive plate (13) and the bass U-shaped magnetic conductive ring (28), and the treble lower magnetic conductive plate (13) and the bass U-shaped magnetic conductive ring (28) are fixed by the stainless steel screw (41); The treble lower magnetic conductive plate (13), together with the treble magnet (12) and the treble upper magnetic conductive plate (11), are tightly connected to the bass upper magnetic conductive plate (27) through stainless steel screws (41) and together with the bass magnet (26) and the bass U-shaped magnetic conductive ring (28) form a bass magnetic circuit assembly and a treble magnetic circuit assembly; The tweeter's magnetic circuit assembly uses a high-performance neodymium outer magnetic circuit structure, while the woofer's magnetic circuit assembly uses a high-performance neodymium inner magnetic circuit structure. The magnets in the two magnetic circuits have opposite polarities.

2. A coaxial loudspeaker combining high and low frequencies according to claim 1, characterized in that: The bass part (2) also includes a first bass vibration component consisting of a bass vibration membrane (21), a bass basin frame (22), a bass positioning plate (23), and a bass coil (24); the bass basin frame (22) is fixed on the circumference of a bass U-shaped magnetic conductive ring (28); a bass wiring plate (32) and a treble wiring plate (34) are installed on the circumference of the bass basin frame (22); the bass coil (24) is suspended at the center of a magnetic circuit gap formed by a bass upper magnetic conductive plate (27), a treble lower magnetic conductive plate (13) and a bass U-shaped magnetic conductive ring (28); the bass coil (24) is bonded to the center of the bass vibration membrane (21) and the bass positioning plate (23) at a position close to the top; the outer edges of the bass vibration membrane (21) and the bass positioning plate (23) are respectively bonded to the bass basin frame (22); and the bass coil (24) is connected to the bass wiring plate (32) through a bass lead wire (31).

3. A coaxial loudspeaker combining high and low frequencies according to claim 2, characterized in that: The tweeter part (1) also includes a second tweeter vibration component consisting of a tweeter coil (15), a tweeter vibration membrane (16), a tweeter bracket (17), and a tweeter coil connecting wire (35); the tweeter coil (15) is suspended at the center of a magnetic circuit gap formed by a tweeter lower magnetic conductive plate (13) and a tweeter upper magnetic conductive plate (11); the top of the tweeter coil (15) is connected to the tweeter vibration membrane (16) by glue, and the outer plane of the tweeter vibration membrane (16) is bonded to the surface center of the tweeter bracket (17); the tweeter coil (15) is connected to a tweeter wiring piece (34) by a tweeter coil connecting wire (35) and a tweeter lead wire (33).

4. The coaxial loudspeaker with high and low frequencies according to claim 1, characterized in that: The back of the tweeter lower magnetic conductive plate (13) is provided with a groove for leading out the tweeter lead-out line (33).

5. The coaxial loudspeaker with high and low frequencies according to claim 3, characterized in that: The back space of the tweeter vibration membrane (16) is filled with tweeter sound-absorbing cotton (19), and a tweeter horn (18) is added to the outer edge of the tweeter vibration membrane (16). The tweeter horn (18) and the bass vibration membrane (21) together form a large tweeter horn.

6. The coaxial loudspeaker with high and low frequencies according to claim 1, characterized in that: A screw washer (42) is provided around the circumference of the stainless steel screw (41).

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