Loudspeaker

Abstract

The utility model belongs to the technical field of loudspeakers, and particularly relates to a loudspeaker, which comprises a T iron and a voice coil, the top of the T iron is provided with a stand column, the voice coil is sleeved on the stand column, the stand column is internally provided with a heat dissipation cavity, the heat dissipation cavity is internally provided with a heat dissipation piece and an exhaust passage, the exhaust passage extends from the inner wall of the heat dissipation cavity to the bottom of the T iron, and the inner wall of the heat dissipation piece is provided with a heat dissipation hole. The surface of the stand column is provided with heat dissipation holes communicated with the heat dissipation cavity, the hole diameters of the heat dissipation holes are gradually increased from the inside of the stand column to the outside, and the heat dissipation holes are used for guiding heat generated by the voice coil into the heat dissipation cavity. According to the loudspeaker, the bottom of the voice coil can be cooled on the premise that a magnetic circuit gap is not reduced, heat accumulation is reduced, the problem that the bottom of the voice coil is overheated after a traditional loudspeaker is used for a long time is expected to be solved, the cooling efficiency of the loudspeaker is improved, the voice coil is prevented from being burnt out, and therefore the service life of the loudspeaker is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to loudspeaker technical field, specifically relates to a loudspeaker. BACKGROUND

[0002] The loudspeaker is a kind of very commonly used electroacoustic transducer device.Acoustic electric energy passes through electromagnetic, piezoelectric or electrostatic effect, and the paper basin or diaphragm is vibrated and resonates with the surrounding air to emit sound.

[0003] At present, voice coil is usually divided into upper part and lower part.The upper part of voice coil is placed in the frame, and the lower part is clamped between T iron and magnetic ring.In high-power loudspeaker, if voice coil fails, its lower part is more vulnerable than upper part.The reason is that the structure of frame is relatively open, which helps the heat dissipation of the upper part of voice coil.In contrast, the lower part of voice coil is in a relatively closed space, and the heat is not easy to diffuse, thereby increasing the risk of overheating and burning out of the lower part.

[0004] In the prior art, the user usually installs a heat sink in the gap between voice coil, magnet and T iron to achieve the effect of heat dissipation.However, although this method can promote heat dissipation to a certain extent, it also causes the problem of narrowing the magnetic circuit gap, leading to heat accumulation, which is not conducive to heat dissipation in the long run.In addition, the addition of heat sink may also increase the complexity of the manufacturing process. UTILITY MODEL CONTENT

[0005] Therefore, the utility model provides a loudspeaker, which aims to place the heat dissipation assembly inside T iron to dissipate heat from the bottom of voice coil without changing the magnetic circuit gap.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] A loudspeaker includes T iron and voice coil, the top of T iron is provided with a stand, the voice coil is sleeved on the stand, the inside of the stand is provided with a heat dissipation cavity, the heat dissipation cavity is provided with a heat dissipation piece and an exhaust passage, the exhaust passage extends from the inner wall of the heat dissipation cavity to the bottom of T iron, the surface of the stand is provided with a heat dissipation hole communicating with the heat dissipation cavity, the hole diameter of the heat dissipation hole increases from the inside of the stand to the outside, and the heat dissipation hole is used to guide the heat generated by the voice coil into the heat dissipation cavity.

[0008] As a preferred technical scheme, the heat dissipation piece includes heat dissipation copper pipes, and a plurality of heat dissipation copper pipes are arranged in the opening of the exhaust passage on the inner wall of the heat dissipation cavity.

[0009] Further, the dust screen is arranged in the opening of the exhaust passage at the bottom of T iron.

[0010] Further, the magnetic ring is sleeved on the column, the bottom of the voice coil abuts against the top of the magnetic ring, the magnetic ring is used for generating a magnetic field to make the voice coil ascend and descend on the column, and the vamplate is sleeved on the voice coil and the bottom of the vamplate abuts against the top of the magnetic ring, the vamplate is used for positioning the voice coil.

[0011] Further, the basin frame is provided with openings at the upper end and the lower end, the voice coil passes through the opening at one end of the basin frame and enters the inside of the basin frame, the top of the vamplate is provided with a screw hole, and the voice coil is fixed in the basin frame through the screw hole and the external screw.

[0012] Further, the opening at the other end of the basin frame is provided with a drum paper, and the drum paper is in a conical shape.

[0013] Further, the opening and the voice coil are bonded through glue, and the voice coil is used for driving the drum paper to vibrate.

[0014] Further, the basin frame is in a conical shape, and the openings at the two ends of the basin frame are connected through a plurality of support plates, and gaps are left between two adjacent support plates.

[0015] As described above, the beneficial effects of the present application are as follows:

[0016] By arranging the heat dissipation cavity and the heat dissipation piece in the inside of the column, the bottom of the voice coil can be cooled without reducing the magnetic gap, the accumulation of heat is reduced, the problem of overheat of the bottom of the voice coil of the traditional loudspeaker after long-term use is solved, the heat dissipation efficiency of the loudspeaker is improved, the voice coil is prevented from being burnt, and the service life of the loudspeaker is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be described by examples and with reference to the accompanying drawings, in which:

[0018] Figure 1 is a structural schematic view of a loudspeaker provided by the present application;

[0019] Figure 2 is an assembly schematic view of a T iron provided by the present application;

[0020] Figure 3 is an assembly schematic view of a voice coil provided by the present application;

[0021] Figure 4 is an internal structure schematic view of a column provided by the present application.

[0022] Fig. 1 is a schematic view of the loudspeaker according to the present application, wherein the reference numerals are as follows: a yoke 1; a cone 2; a voice coil 3; a T-shaped iron 4; a stand 5; a magnetic ring 6; a permalloy gasket 7; a heat dissipation hole 8; a heat dissipation cavity 9; a heat dissipation member 10; and an exhaust passage 11. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0024] Embodiment One

[0025] In the prior art, a user usually installs a heat dissipation fin in the gap between the voice coil, the magnet and the T-shaped iron to achieve the heat dissipation effect. However, this method can promote the heat dissipation to a certain extent, but also causes the problem of the reduced gap of the magnetic circuit, resulting in the heat accumulation, which is not conducive to the heat dissipation in the long run. In addition, the addition of the heat dissipation fin can increase the complexity of the manufacturing process.

[0026] Therefore, in order to solve the problem that the bottom of the voice coil is prone to overheat after the existing loudspeaker is used for a long time, and to improve the heat dissipation efficiency of the loudspeaker and prevent the voice coil from being burned out, the present application discloses a loudspeaker, which refers to Figure 2 and Figure 4 , comprising a T-shaped iron 4 and a voice coil 3, wherein the top of the T-shaped iron 4 is provided with a stand 5, and the voice coil 3 is sleeved on the stand 5, and specifically, the inside of the stand 5 is provided with a heat dissipation cavity 9, the heat dissipation cavity 9 is provided with a heat dissipation member 10 and an exhaust passage 11, the exhaust passage 11 extends from the inner wall of the heat dissipation cavity 9 to the bottom of the T-shaped iron 4, wherein the surface of the stand 5 is provided with a heat dissipation hole 8 which is in communication with the heat dissipation cavity 9, the hole diameter of the heat dissipation hole 8 increases from the inside of the stand 5 to the outside, and the heat dissipation hole 8 is used for guiding the heat generated by the voice coil 3 into the heat dissipation cavity 9.

[0027] In the embodiment, since the bottom of the voice coil 3 is sleeved on the column 5, when the bottom of the voice coil 3 generates heat, hot air can be introduced into the heat dissipation cavity 9 through the heat dissipation holes 8 on the surface of the column 5, and then the heat dissipation member 10 in the heat dissipation cavity 9 can absorb and conduct the heat in the hot air, thereby reducing the temperature of the bottom of the voice coil 3. Since the aperture of the heat dissipation hole 8 increases from the inside of the column 5 to the outside, this helps to form an effective hot air flow channel, so that the hot air generated by the bottom of the voice coil 3 can quickly flow into the heat dissipation cavity 9, further improving the heat dissipation efficiency. At the same time, the exhaust channel 11 in the heat dissipation cavity 9 can guide the hot air from the heat dissipation cavity 9 to the bottom of the T-shaped iron 4, thereby avoiding the accumulation of heat inside the loudspeaker, and ensuring that the temperature of the voice coil 3 remains in the appropriate range.

[0028] In addition, the heat dissipation member 10 in the embodiment can be a material with high thermal conductivity, such as a metal material such as copper or aluminum, to ensure that heat can be quickly conducted from the voice coil 3 to the heat dissipation cavity 9.

[0029] For example, the heat dissipation member 10 includes heat dissipation copper pipes, and a plurality of heat dissipation copper pipes are arranged at the opening of the exhaust channel 11 on the inner wall of the heat dissipation cavity 9, so that the heat dissipation copper pipes can effectively absorb and conduct the heat in the hot air. The arrangement of these heat dissipation copper pipes can optimize the flow path of the hot air, so that the hot air can fully contact the heat dissipation copper pipes when passing through the heat dissipation cavity 9, thereby improving the heat dissipation efficiency. In addition, the surface of the heat dissipation copper pipe can be designed to have a shape with a large surface area, such as a corrugated or fin shape, to further increase the heat dissipation area and improve the heat dissipation performance.

[0030] Further, in order to prevent external dust from entering the voice coil 3, a dust screen is arranged in the opening of the exhaust channel 11 at the bottom of the T-shaped iron 4, which can block the external dust from entering the heat dissipation cavity 9 from the bottom of the T-shaped iron 4, thereby preventing the external dust from entering the voice coil 3 from the heat dissipation hole 8.

[0031] Compared with the prior art of installing heat dissipation fins in the gap between the voice coil, the magnet and the T-shaped iron, the loudspeaker of the present application can dissipate heat from the voice coil 3 without reducing the magnetic gap, thereby reducing the accumulation of heat.

[0032] In summary, the loudspeaker of the present application can solve the problem of overheating of the bottom of the voice coil in the traditional loudspeaker after long-term use, improve the heat dissipation efficiency of the loudspeaker, prevent the voice coil from being burned out, and prolong the service life of the loudspeaker.

[0033] Embodiment two

[0034] On the basis of the first embodiment, in order to keep the voice coil 3 stable, referring to Figure 1 and Figure 3 The utility model also includes magnetic ring 6 and hu sai gasket 7, specifically, the magnetic ring 6 is set on the stand 5, the bottom of voice coil 3 and the top of magnetic ring 6 are in contact, the magnetic ring 6 is used to produce the magnetic field, makes voice coil 3 go up and down on the stand 5, hu sai gasket 7 is set on voice coil 3, and the bottom of hu sai gasket 7 and the top of magnetic ring 6 are in contact, hu sai gasket 7 is used to position voice coil 3.

[0035] In this embodiment, hu sai gasket 7 is set on voice coil 3, and the bottom thereof is in contact with the top of magnetic ring 6. The main function of hu sai gasket 7 is to position voice coil 3. Specifically, a circular ring that is adapted to the outer ring of voice coil 3 is formed on hu sai gasket 7. The circular ring is used to clamp the outer ring of voice coil 3, so that voice coil 3 can stably go up and down after being affected by the magnetic field of magnetic ring 6, and is not prone to left-right shaking, thereby ensuring the stability of stand 5 during vertical movement. Meanwhile, hu sai gasket 7 also has a certain buffering effect, which can absorb part of the vibration and reduce the noise generated by voice coil 3 during movement.

[0036] It should be noted that voice coil 3 is a hollow cylinder, including an inner ring and an outer ring. The inner ring of voice coil 3 is adapted to the diameter of stand 5, and the outer ring of voice coil 3 is adapted to the circular ring in the middle of hu sai gasket 7. A circular ring that is adapted to the diameter of stand 5 is also formed in the middle of magnetic ring 6. Therefore, when installing magnetic ring 6, voice coil 3 and hu sai gasket 7, the user first sets magnetic ring 6 on stand 5, so that the bottom of magnetic ring 6 is in contact with the top of T iron 4. Then, voice coil 3 is passed through stand 5, so that the bottom of voice coil 3 can be in contact with the top of magnetic ring 6. Finally, hu sai gasket 7 is put in to limit voice coil 3.

[0037] In this embodiment, in order to improve the overall strength of the loudspeaker, a basket 1 is further included. The upper and lower ends of basket 1 are both provided with openings. Voice coil 3 is inserted into the interior of basket 1 through the opening at one end of basket 1. The top of hu sai gasket 7 is provided with a threaded hole. The threaded hole fixes voice coil 3 in basket 1 by an external screw. A drum paper 2 is arranged in the opening at the other end of basket 1. The drum paper 2 is conical. An annular opening is formed at the tip of drum paper 2. The annular opening is set on voice coil 3. Basket 1 is made of hard material, such as aluminum alloy or carbon steel, which can protect voice coil 3 and drum paper 2.

[0038] In a specific embodiment, the annular opening and voice coil 3 are bonded by glue. When magnetic ring 6 generates a magnetic field, voice coil 3 will move up and down between the magnetic circuits, thereby driving drum paper 2 to vibrate, and the loudspeaker emits sound through the vibration of drum paper 2.

[0039] Further, the basin frame 1 is in a conical structure, and the openings at both ends of the basin frame 1 are connected through a plurality of support plates, and a gap is left between two adjacent support plates, so that the internal structure of the basin frame 1 is relatively hollow, which is convenient for heat dissipation of the upper part of the voice coil 3.

[0040] In summary, in combination with Embodiment One to Embodiment Two, the working steps of the loudspeaker are as follows:

[0041] First, the magnetic ring 6 is sleeved on the stand 5, and the bottom thereof is ensured to be attached to the top of the T-shaped iron 4. Then, the voice coil 3 is passed through the stand 5, so that the bottom of the voice coil 3 is in contact with the top of the magnetic ring 6. Then, the dust cap gasket 7 is put in to limit the voice coil 3, so as to ensure the stability of the voice coil 3 when it is lifted up and down on the stand 5. At this time, the inner ring of the voice coil 3 is adapted to the diameter of the stand 5, and the outer ring is adapted to the ring in the middle of the dust cap gasket 7, so as to ensure the stable movement of the voice coil 3 under the action of the magnetic field.

[0042] At this time, the hole diameter of the heat dissipation hole 8 on the stand 5 increases from the inside to the outside, forming an effective hot air flow channel, so that the hot air generated at the bottom of the voice coil 3 can quickly flow into the heat dissipation cavity 9. The heat dissipation piece 10 in the heat dissipation cavity 9 can absorb and conduct the heat in the hot air, thereby improving the heat dissipation efficiency.

[0043] At the same time, in order to prevent external dust from entering the voice coil 3, the dust screen is arranged in the opening at the bottom of the T-shaped iron 4, which effectively blocks the invasion of dust, thereby improving the heat dissipation efficiency of the voice coil 3, preventing the voice coil 3 from overheating, and prolonging the service life of the loudspeaker.

[0044] Finally, the screw hole at the top of the dust cap gasket 7 of the basin frame 1 is fixed with the voice coil 3 through an external screw, so as to ensure the stability of the voice coil 3 in the basin frame 1. The drum paper 2 is arranged in the opening at the other end of the basin frame 1, and the drum paper 2 is arranged in a conical shape, and the annular opening at the tip of the cone is sleeved on the voice coil 3. The basin frame 1 is made of hard materials such as aluminum alloy or carbon steel, which not only protects the voice coil 3 and the drum paper 2, but also facilitates heat dissipation of the upper part of the voice coil 3.

[0045] In the specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between each embodiment can be referred to each other.

[0046] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A horn, characterized by Including T iron (4) and voice coil (3), the top of the T iron (4) is provided with a column (5), and the voice coil (3) is sleeved on the column (5); Wherein, the inside of the column (5) is provided with a heat dissipation cavity (9), the heat dissipation cavity (9) is provided with a heat dissipation piece (10) and an exhaust channel (11), the exhaust channel (11) extends from the inner wall of the heat dissipation cavity (9) to the bottom of the T iron (4); Wherein, the surface of the column (5) is provided with a heat dissipation hole (8) communicating with the heat dissipation cavity (9), the aperture of the heat dissipation hole (8) increases from the inside of the column (5) to the outside, and the heat dissipation hole (8) is used for guiding the heat generated by the voice coil (3) into the heat dissipation cavity (9).

2. The horn of claim 1, wherein The heat dissipation piece (10) comprises a heat dissipation copper pipe, and a plurality of heat dissipation copper pipes are arranged in the opening of the exhaust channel (11) on the inner wall of the heat dissipation cavity (9).

3. The horn of claim 1, wherein The dust screen is arranged in the opening at the bottom of the T iron (4).

4. The horn of claim 1, wherein Further comprising: A magnetic ring (6) is sleeved on the column (5), the bottom of the voice coil (3) abuts against the top of the magnetic ring (6), and the magnetic ring (6) is used for generating a magnetic field to make the voice coil (3) rise and fall on the column (5); A hua si gasket (7) is sleeved on the voice coil (3), and the bottom of the hua si gasket (7) abuts against the top of the magnetic ring (6), and the hua si gasket (7) is used for positioning the voice coil (3).

5. The horn of claim 3, wherein Further comprising a yoke (1), both ends of the yoke (1) are provided with openings, the voice coil (3) passes through the opening at one end of the yoke (1) and enters the inside of the yoke (1), wherein a screw hole is formed in the top of the hua si gasket (7), and the voice coil (3) is fixed in the yoke (1) by the external screw.

6. The horn of claim 5, wherein, The opening at the other end of the yoke (1) is provided with a drum paper (2), and the drum paper (2) is arranged in a conical shape, wherein an annular opening is formed in the tip of the drum paper (2) and sleeved on the voice coil (3).

7. The horn of claim 6, wherein The annular opening and the voice coil (3) are bonded by glue, and the voice coil (3) is used for driving the drum paper (2) to vibrate.

8. The horn of claim 5, wherein, The yoke (1) is in a conical structure, and the openings at both ends of the yoke (1) are connected by a plurality of supporting plates, and gaps are left between two adjacent supporting plates.

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