A novel loudspeaker diaphragm voice coil mounting structure

Abstract

The utility model provides a novel loudspeaker diaphragm voice coil mounting structure, including frame, including diaphragm installation groove and the U iron installation groove of setting in diaphragm installation groove below, the U iron sets up in the U iron installation groove, the cross section of U iron is U type, the U iron has a accommodation cavity, be provided with a magnetic assembly in the accommodation cavity, the magnetic assembly includes setting in the first magnet of accommodation cavity bottom and setting the pole piece above the first magnet, the magnetic assembly outer circle is equipped with a voice coil, diaphragm, including setting on the connecting portion of diaphragm installation groove and with the diaphragm main part integrative forming setting, diaphragm main part bottom is provided with a circle limit portion, and the voice coil upper end top pressure limit portion in. The utility model can make voice coil installation more stable, reduce the offset between diaphragm and voice coil, not only can prevent the voice coil from rubbing due to vibration, and produce broken sound even burn the coil.

Description

Technical Field

[0001] This utility model relates to a novel loudspeaker diaphragm voice coil mounting structure. Background Technology

[0002] With the rapid development of science and technology, consumers have increasingly higher demands for electronic products. Based on these demands, the design of electronic products such as mobile phones is trending towards thinner and lighter designs. Speaker modules, as important acoustic components of portable electronic devices, are used to convert electrical signals into sound signals; they are energy conversion devices.

[0003] The existing loudspeaker assembly is shown in the figure. This figure is a loudspeaker with application number CN202023138493.5, which includes a diaphragm, a voice coil attached to the diaphragm, a central magnet, and a frame. The frame includes an outer frame part made of epoxy resin-based magnetic powder composite material that supports the diaphragm and an inner frame part that supports the central magnet. This loudspeaker solves the problem of loudspeaker audio quality under space constraints by using a frame and magnetic pole plate design made of epoxy resin-based magnetic powder composite material in the loudspeaker. However, because its voice coil is pressed under the diaphragm, and because it does not limit the position of the voice coil and the diaphragm, the diaphragm and voice coil may be radially deviated due to vibration during use, which may cause the voice coil to rub against the coil, resulting in distortion or even burning out the coil. Therefore, this utility model designs a new loudspeaker diaphragm voice coil mounting structure. Utility Model Content

[0004] This invention provides a novel speaker diaphragm voice coil mounting structure that can effectively solve the above-mentioned problems.

[0005] This utility model is implemented as follows:

[0006] A novel loudspeaker diaphragm voice coil mounting structure includes:

[0007] The frame includes a diaphragm mounting groove and a U-shaped iron mounting groove disposed below the diaphragm mounting groove;

[0008] A U-shaped iron is placed in a U-shaped iron mounting groove. The U-shaped iron has a U-shaped cross-section and a receiving cavity inside. A magnetic component is disposed in the receiving cavity. The magnetic component includes a first magnet disposed at the bottom of the receiving cavity and a pole piece disposed above the first magnet. A voice coil is sleeved around the outer ring of the magnetic component.

[0009] The diaphragm includes a connecting part disposed on the diaphragm mounting groove and a diaphragm body integrally formed with the connecting part. A limiting part is provided at the bottom of the diaphragm body, and the upper end of the voice coil presses against the limiting part.

[0010] As a further improvement, a magnetic gap is provided between the accommodating cavity and the magnetic component, and the magnetic gap is filled with magnetic fluid.

[0011] As a further improvement, the viscosity of the magnetic fluid is 100–500 cP.

[0012] As a further improvement, if the depth of the magnetic fluid is H1 and the distance between the bottom of the voice coil and the bottom of the accommodating cavity is H2, then H1 = 3 / 5 to 4 / 5H2.

[0013] As a further improvement, a second magnet is disposed above the electrode.

[0014] As a further improvement, the outer periphery of the frame is provided with several heat dissipation grooves.

[0015] As a further improvement, two sets of mounting parts are symmetrically arranged on the outer side of the frame.

[0016] The beneficial effects of this invention are as follows: An annular limiting part is added to the bottom of the diaphragm body, where the upper end of the voice coil is embedded to form a mechanical engagement. The lower end of the voice coil is fitted onto the outer ring of the magnetic component, making the voice coil installation more stable and reducing the offset between the diaphragm and the voice coil. This not only prevents the voice coil from rubbing against each other due to vibration, thus preventing distortion or even burning out the coil, but also... Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of a novel loudspeaker diaphragm voice coil mounting structure according to this utility model.

[0019] Figure 2 This is a top view schematic diagram of a novel loudspeaker diaphragm voice coil mounting structure according to this utility model.

[0020] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure at point BB.

[0021] The accompanying diagrams are labeled as follows:

[0022] 10. Frame; 11. Diaphragm mounting slot; 12. U-shaped iron mounting slot; 13. Heat dissipation slot; 14. Mounting part;

[0023] 20. U-iron; 21. Magnetic gap;

[0024] 30. Magnetic component; 31. First magnet; 32. Electrode; 33. Second magnet;

[0025] 40. Voice coil;

[0026] 50. Diaphragm; 51. Connecting part; 52. Diaphragm body; 53. Limiting part;

[0027] 60. Magnetic fluid. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model.

[0029] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Reference Figure 1 As shown, a novel loudspeaker diaphragm voice coil 40 mounting structure includes a frame 10, a diaphragm mounting groove 11, and a U-shaped iron mounting groove 12 disposed below the diaphragm mounting groove 11.

[0031] U-shaped iron 20 is disposed in U-shaped iron mounting groove 12. The cross-section of U-shaped iron 20 is U-shaped. U-shaped iron 20 has a receiving cavity. A magnetic component 30 is disposed in the receiving cavity. The magnetic component 30 includes a first magnet 31 disposed at the bottom of the receiving cavity and a pole piece 32 disposed above the first magnet 31. A voice coil 40 is sleeved on the outer ring of the magnetic component 30.

[0032] The diaphragm 50 includes a connecting portion 51 disposed on the diaphragm mounting groove 11 and a diaphragm body 52 integrally formed with the connecting portion 51. A limiting portion 53 is provided at the bottom of the diaphragm body 52, and the upper end of the voice coil 40 presses against the limiting portion 53. The addition of the annular limiting portion 53 at the bottom of the diaphragm body 52 allows the upper end of the voice coil 40 to be embedded therein, forming a mechanical engagement. The lower end of the voice coil 40 is fitted onto the outer ring of the magnetic component 30, making the voice coil 40 more securely installed and reducing the offset between the diaphragm 50 and the voice coil 40. This not only prevents the voice coil 40 from rubbing against each other due to vibration, thus preventing distortion or even burnt-out coils.

[0033] Reference Figures 2-3 As shown, a magnetic gap 21 is provided between the accommodating cavity and the magnetic component 30. The magnetic gap 21 is filled with magnetic fluid 60. The magnetic fluid 60 can solve the voice coil heat dissipation problem and improve the speaker power tolerance problem. Moreover, the magnetic fluid 60 can balance heat dissipation and damping. The viscosity of the magnetic fluid 60 is 100~500cP. In this embodiment, the viscosity of the magnetic fluid 60 is 500cP. The low viscosity of the magnetic fluid 60 can reduce high frequency attenuation. The depth of the magnetic fluid 60 is H1. The distance between the bottom of the voice coil 40 and the bottom of the accommodating cavity is H2. Then H1 = 3 / 5~4 / 5H2. In this embodiment, H1 = 3 / 5H2. If H1 < 3 / 5H2, it may cause poor heat dissipation at the bottom of the voice coil 40. If H1 > 4 / 5H2, the magnetic fluid 60 may touch the voice coil 40 and overflow into the limiting part, contaminating the diaphragm.

[0034] Reference Figure 3 As shown, a second magnet 33 is provided above the pole piece 32. The purpose of providing the second magnet is to make the magnetic flux density distribution more uniform, thereby improving the magnetic field strength and reducing the probability of distortion.

[0035] Reference Figure 1 As shown, the outer periphery of the frame 10 is provided with several heat dissipation grooves 13, which not only improves heat dissipation efficiency but also reduces weight. Two sets of mounting parts 14 are symmetrically arranged on the outer side of the frame 10, and the mounting parts 14 are used to mount the speaker on the device.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel loudspeaker diaphragm voice coil mounting structure, characterized in that, include: The frame (10) includes a diaphragm mounting groove (11) and a U-shaped iron mounting groove (12) disposed below the diaphragm mounting groove (11); U-shaped iron (20) is disposed in U-shaped iron mounting groove (12). The cross-section of the U-shaped iron (20) is U-shaped. The U-shaped iron (20) has a receiving cavity. A magnetic component (30) is disposed in the receiving cavity. The magnetic component (30) includes a first magnet (31) disposed at the bottom of the receiving cavity and a pole piece (32) disposed above the first magnet (31). A voice coil (40) is sleeved on the outer ring of the magnetic component (30). The diaphragm (50) includes a connecting part (51) disposed on the diaphragm mounting groove (11) and a diaphragm body (52) integrally formed with the connecting part (51). A limiting part (53) is provided at the bottom of the diaphragm body (52), and the upper end of the voice coil (40) presses against the limiting part (53).

2. The novel loudspeaker diaphragm voice coil mounting structure according to claim 1, characterized in that, A magnetic gap (21) is provided between the accommodating cavity and the magnetic component (30), and the magnetic gap (21) is filled with magnetic fluid (60).

3. The novel loudspeaker diaphragm voice coil mounting structure according to claim 2, characterized in that, The viscosity of the magnetic fluid (60) is 100-500 cP.

4. The novel loudspeaker diaphragm voice coil mounting structure according to claim 3, characterized in that, The depth of the magnetic fluid (60) is H1, and the distance between the bottom of the voice coil (40) and the bottom of the accommodating cavity is H2, then H1 = 3 / 5 to 4 / 5H2.

5. The novel loudspeaker diaphragm voice coil mounting structure according to claim 1, characterized in that, A second magnet (33) is disposed above the electrode (32).

6. The novel loudspeaker diaphragm voice coil mounting structure according to claim 1, characterized in that, The outer periphery of the frame (10) is provided with several heat dissipation grooves (13).

7. The novel loudspeaker diaphragm voice coil mounting structure according to claim 1, characterized in that, Two sets of mounting parts (14) are symmetrically arranged on the outer side of the frame (10).

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