TW201808018A - Loudspeaker structure capable of always keeping vibrations in a vertical direction to reduce the horizontal shift of the voice coil - Google Patents

Abstract

A loudspeaker structure includes a diaphragm; a voice coil having a top portion connected to the bottom of the diaphragm; a magnetic return member having magnetic gap and a plurality of notches, t the voice coil is arranged in the magnetic gap; a bracket disposed between the diaphragm and the magnetic return member; an elastic support having a voice coil connecting unit, a bracket connecting unit and a plurality of elastic connecting units, wherein, the elastic connecting units are symmetrically connected between the voice coil connecting unit and the bracket connecting unit, the voice coil connecting unit is arranged in the magnetic gap and connected to the bottom of the voice coil, the elastic connecting unit is arranged in the notches, and the bracket connecting unit is connected to the bracket.

Description

Speaker structure

The present invention relates to a speaker structure, in particular to a person who can maintain the vertical movement of the voice coil even under a large vibration stroke to reduce various problems caused by the horizontal deviation of the voice coil.

Loudspeakers can be roughly divided into vibration structures and fixed structures. Vibration structure refers to the process in which a speaker's externally inputted sound source signals are converted into mechanical vibrations. The components that actually generate vibration include the voice coil and diaphragm, and fixed structures. It refers to components that do not substantially generate vibration during the vibration process, including brackets, magnets, magnet guides, etc. When the electrical energy of the input electronic signal is larger, the power of the speaker is larger, and the vibration stroke of the voice coil is larger, so the vibration stroke of the diaphragm is also larger, and the volume generated is larger. Therefore, if the loudspeaker is to emit a large volume, the vibration stroke of the voice coil must be large. However, when the voice coil is actuated, it should be maintained in an axial direction for reciprocating action. However, when the power of the loudspeaker is greater, the voice coil action is more likely to deviate from the axis and cause polarization. The lighter sound is distorted and the heavy one may touch The other components of the speaker produce strange sounds and even cause damage.

Therefore, how to invent a speaker structure so that the voice coil can maintain the vertical movement even under a large vibration stroke, so as to reduce various problems caused by the horizontal deviation of the voice coil will be the invention For positive disclosure.

In view of the shortcomings of the above-mentioned conventional technology, the inventor felt that it had not been perfected, and exhausted his mind to study it carefully to overcome it, and then developed a speaker structure to achieve a voice coil that can still be used under large vibration strokes. The purpose of maintaining the vertical movement to reduce the various problems caused by the horizontal shift of the voice coil.

To achieve the above and other objectives, the present invention provides a speaker structure including: a diaphragm; a voice coil, the top of which is connected to the bottom of the diaphragm; and a magnetic return assembly, which has a magnetic gap and a plurality of gaps. The voice coil is disposed in the magnetic gap; a bracket is connected between the diaphragm and the magnetic return component; and an elastic support portion has a voice coil connection unit, a bracket connection unit and a plurality of elastic connection units , The elastic connection units are symmetrically connected between the voice coil connection unit and the bracket connection unit, the voice coil connection unit is disposed at the magnetic gap and connected to the bottom of the voice coil, and the elastic connection units are respectively disposed at the At the same notch, the bracket connection unit is connected to the bracket.

In the above speaker structure, the elastic supporting portion is a flexible circuit board.

In the above speaker structure, the number of the notches is four or two, and the positions of the notches are symmetrical to each other.

In the above speaker structure, the cross section of the magnetic return component is rectangular or square and the notches are located at corners or sides of the cross section of the magnetic return component, and the positions of the notches are symmetrical to each other.

In the above speaker structure, the magnetic return assembly has a magnetically permeable box body, a magnet, and an upper magnetically permeable body, the magnet is disposed on the bottom surface of the magnetically permeable box body, the upper magnetically permeable body is disposed on the magnet, and the magnetic gap It is located between the upper magnet and the magnet and the magnetic box body, the cross section of the magnetic box body is rectangular or square, and the notches are located at the corners or sides of the cross section of the magnetic box body, the notches The positions are symmetrical to each other.

The above speaker structure further includes a plurality of internal electrical connectors, which are disposed on the elastic connection units, the voice coil connection unit or the notches to electrically connect the voice coil.

The above speaker structure further includes a plurality of external electrical connectors, which are disposed on the bracket connection unit to electrically connect the internal electrical connectors, respectively.

In the above speaker structure, the bottom of the bracket has a plurality of positioning columns, the bracket connection unit has a plurality of positioning holes, the bracket connection unit is connected to the bottom of the bracket, and the positioning columns are respectively disposed in the positioning holes.

In the above speaker structure, the elastic connection units are respectively S-shaped.

With this, the speaker structure of the present invention allows the voice coil to maintain vertical motion even under a large vibration stroke, thereby reducing various problems caused by the horizontal deviation of the voice coil.

In order to fully understand the purpose, features and effects of the present invention, the following specific embodiments are used in conjunction with the accompanying drawings to make a detailed description of the present invention, which will be described later:

Please refer to FIGS. 1 to 6. As shown in the figure, the present invention provides a speaker structure including a diaphragm 5, a voice coil 1, a magnetic return assembly 2, a bracket 3, and an elastic supporting portion 4. The diaphragm 5 may be rectangular, square, circular, or other geometric shapes. The voice coil 1 may be a rectangular ring body, a square ring body, a circular ring body, or other geometric shape ring body. The top periphery can be connected to the bottom of the diaphragm 5 by a gel; the magnetic return assembly 2 has a magnetic gap 24 and a plurality of notches 211 (air vents). The number of these notches 211 can be four (or two), and the The positions of the notches 211 are symmetrical to each other. For example, the positions of the notches 211 may be symmetrical to the center or center line of the magnetic return assembly 2. The voice coil 1 is disposed at the magnetic gap 24. In addition, the cross section of the magnetic return assembly 2 It can be rectangular (or square or other geometric shapes), the notches 211 can be located at the corners (or edges or arcs) of the cross section of the magnetic return assembly 2, and the positions of the notches 211 are symmetrical to each other, such as the notches 211 The position of the magnetic return component 2 may be symmetrical to the center or center line of the magnetic return component 2. Furthermore, the magnetic return component 2 may be a single magnetic design with only one magnet (or a multiple magnetic design with multiple magnets) and a guide. The magnetic box body 21, a magnet 22 and an upper magnet 23 are disposed on the bottom of the magnetic box 21 The upper magnet 23 is disposed on the magnet 22, and the magnetic gap 24 is located between the upper magnet 23 and the magnet 22 and the magnetically permeable box body 21 and may be a ring rectangle (or a ring square, a circular ring, or The other cross-sections of the upper magnet 23 and the magnet 22 may be rectangular (or square or other geometric shapes), and the cross-section of the magnetically permeable box body 21 may be rectangular (or square or other geometric shapes) and The notches 211 may be located at corners (or edges or arcs) of the cross section of the magnetically permeable box body 21. The positions of the notches 211 are symmetrical to each other. For example, the positions of the notches 211 may be symmetrical to the magnetically permeable box body 21. Center or center line; the bracket 3 is connected between the diaphragm 5 and the magnetic return assembly 2, and the top periphery of the bracket 3 is connected to the bottom periphery of the diaphragm 5; the elastic supporting portion 4 may be a flexible circuit board It also has a voice coil connection unit 41, a bracket connection unit 42, and a plurality of elastic connection units 43. The elastic connection units 43 are symmetrically connected between the voice coil connection unit 41 and the bracket connection unit 42, such as the elastic connections. The position of unit 43 can be symmetrical to the center or center line of the voice coil connection unit 41 Or it may be symmetrical to the center or center line of the bracket connection unit 42. The voice coil connection unit 41 is disposed on the magnetic gap 24 and connected to the bottom of the voice coil 1. The elastic connection units 43 are respectively disposed on the gaps 211. (Ventilation port), the bracket connection unit 42 is connected to the bracket 3.

As mentioned above, the speaker structure of this creation can be provided by the voice coil connection unit 41 in the magnetic gap 24 and connected to the bottom of the voice coil 1, the bracket connection unit 42 is connected to the bracket 3 and the elastic connection units. 43 are respectively symmetrically connected between the voice coil connection unit 41 and the bracket connection unit 42 through the notches 211 (ventilation ports), so that the movement of the voice coil 1 in the horizontal direction is restricted, and the voice coil 1 is further restricted. Even in a large vibration stroke, the vertical movement can be maintained to reduce various problems caused by the horizontal displacement of the voice coil 1.

Please refer to FIG. 7. As shown in the figure, the above speaker structure may further include a plurality of internal electrical connectors 44, which are respectively disposed on the tops of the elastic connection units 43 (or protrude from the voice coil connection unit 41 or The two lead wires (not shown) of the voice coil 1 are disposed at the notches 211), and the inner electrical connecting bodies 44 can be solder joints, respectively. In addition, the number and position of the inner electrical connecting bodies 44 can be configured according to actual needs. In FIG. 7, the number of the inner electrical connecting bodies 44 is two and is symmetrically disposed on the tops of the elastic connecting units 43. The voice coil 1 The two leads can be soldered to the inner electrical connectors 44 respectively. As a result, the inner electrical connectors 44 can eliminate the need for the two leads of the voice coil 1 to be welded to external electrical contacts, reducing the length of the two leads of the voice coil 1, because the voice coil 1 is large and high speed. Risk of breakage due to vibration.

Please refer to FIG. 7 and FIG. 8. As shown in the figure, the above speaker structure may further include a plurality of external electrical connectors 45, which are disposed on the bottom of the bracket connection unit 42 so as to pass through the leads of the elastic connection units 43 respectively. (Not shown) (or the lead of the elastic connection unit 43 and the lead of the voice coil connection unit 41) are electrically connected to the inner electrical connector 44, and the lead may be provided in the elastic connection unit 43, such as a flexible circuit For the wiring of the board, the external electrical connectors 45 can be solder joints, respectively. In addition, the external electrical connectors 45 can be welded with externally inputted sound source signal leads (not shown). In addition, the number and position of the external electrical connectors 45 can be configured according to actual needs. In FIG. 8, the number of the external electrical connectors 45 is two and is symmetrically disposed at the bottom of the bracket connection unit 42. The voice coil 1 After the two leads (not shown) are soldered to the two inner electrical connectors 44 respectively, the inner electrical connectors 44 can then pass through the leads of the elastic connection units 43 (or the leads of the voice coil connection unit 41 and the The leads of the elastic connection unit 43 are electrically connected to the external electrical connection bodies 45, respectively. As a result, the inner electrical connection body 44 and the outer electrical connection body 45 can make the two leads of the voice coil 1 no longer need to be extended to be welded to external electrical contacts, thereby reducing the time when the two leads of the voice coil 1 are too long. The risk of fracture due to the large and high-speed vibration of the voice coil 1.

Please refer to FIGS. 9 and 10. As shown in the figure, in the above speaker structure, the bottom of the bracket 3 may have a plurality of positioning posts 31, the bracket connection unit 42 may have a plurality of positioning holes 4211, and the bracket connection unit 42 may be connected At the bottom of the bracket 3, the positioning posts 31 are respectively disposed in the positioning holes 4211. Accordingly, the positioning posts 31 and the positioning holes 4211 can position the elastic supporting portion 4 at a specific position of the bracket 3.

Please refer to FIG. 1. As shown in the figure, in the above speaker structure, the elastic connecting units 43 may be S-shaped to improve the elasticity of up and down vibration and exert the function of damping. The voice coil connecting unit 41 may be a rectangular ring. The body (or a square ring body, a ring body or other geometric ring body) is arranged at a magnetic gap 24 of a ring rectangle (or ring square, circular ring or other geometric ring) and connected to the bottom of the voice coil 1, One end of the elastic connection units 43 may be respectively connected to four corners of the voice coil connection unit 41. The bracket connection unit 42 may have two U-shaped connecting bodies 421, and the positioning holes 4211 are respectively located in the U-shaped connecting bodies 421. The U-shaped connecting bodies 421 may be connected to two sides of the bottom of the bracket 3 at intervals, and the openings of the U-shaped connecting bodies 421 may face each other. The other ends of the two elastic connecting units 43 may be connected to each other. Two corners in one U-shaped connecting body 421, and the other ends of the other two elastic connecting units 43 may be respectively connected to two corners in another U-shaped connecting body 421.

The present invention has been disclosed in the foregoing with a preferred embodiment, but those skilled in the art should understand that this embodiment is only for describing the present invention, and should not be interpreted as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to this embodiment should be included in the scope of the present invention. Therefore, the scope of protection of the present invention shall be defined by the scope of the patent application.

1‧‧‧voice coil
2‧‧‧ Magnetic back assembly
21‧‧‧ Magnetic box
211‧‧‧ gap
22‧‧‧Magnet
23‧‧‧Upper guide magnet
24‧‧‧ Magnetic gap
3‧‧‧ bracket
31‧‧‧Positioning post
4‧‧‧ elastic support
41‧‧‧Voice Coil Connection Unit
42‧‧‧ Bracket connection unit
421‧‧‧U-shaped connector
4211‧‧‧ Positioning hole
43‧‧‧Elastic connection unit
44‧‧‧Internal electrical connector
45‧‧‧outer electrical connector
5‧‧‧ diaphragm

[FIG. 1] An exploded view of a diaphragm, a bracket, a voice coil, an elastic support portion, and a magnetic return component according to a preferred embodiment of the present invention. [FIG. 2] It is a schematic diagram of a combination of a bracket, a voice coil, an elastic support portion and a magnetic return component according to a preferred embodiment of the present invention. 3 is a schematic cross-sectional view of FIG. 2. 4 is a plan view of FIG. 2. 5 is a bottom view of FIG. 2. [FIG. 6] It is a schematic diagram of a combination of a diaphragm, a bracket and a magnetic return component according to a preferred embodiment of the present invention. [Fig. 7] Schematic diagram 1 of a combination of a voice coil and an elastic support part according to a preferred embodiment of the present invention. [Fig. 8] Schematic diagram 2 of a combination of a voice coil and an elastic support part according to a preferred embodiment of the present invention. [Figure 9] Schematic diagram 1 of a combination of a voice coil, an elastic support portion and a bracket according to a preferred embodiment of the present invention. [Fig. 10] Schematic diagram 2 of a combination of a voice coil, an elastic support portion and a bracket according to a preferred embodiment of the present invention.

1‧‧‧voice coil

2‧‧‧ Magnetic back assembly

21‧‧‧ Magnetic box

211‧‧‧ gap

22‧‧‧Magnet

23‧‧‧Upper guide magnet

24‧‧‧ Magnetic gap

3‧‧‧ bracket

31‧‧‧Positioning post

4‧‧‧ elastic support

41‧‧‧Voice Coil Connection Unit

42‧‧‧ Bracket connection unit

421‧‧‧U-shaped connector

4211‧‧‧ Positioning hole

43‧‧‧Elastic connection unit

44‧‧‧Internal electrical connector

45‧‧‧outer electrical connector

5‧‧‧ diaphragm

Claims (9)

A speaker structure includes: a diaphragm; a voice coil, the top of which is connected to the bottom of the diaphragm; a magnetic return component, which has a magnetic gap and a plurality of gaps, the voice coil is disposed in the magnetic gap; a bracket , Which is connected between the diaphragm and the magnetic return component; and an elastic support portion, which has a voice coil connection unit, a bracket connection unit, and a plurality of elastic connection units, and the elastic connection units are symmetrically connected to the voice coil. Between the connection unit and the bracket connection unit, the voice coil connection unit is disposed in the magnetic gap and connected to the bottom of the voice coil, the elastic connection units are respectively disposed in the gaps, and the bracket connection unit is connected to the bracket. The speaker structure according to claim 1, wherein the elastic supporting portion is a flexible circuit board. The speaker structure according to claim 1, wherein the number of the gaps is four or two, and the positions of the gaps are symmetrical to each other. The speaker structure according to claim 1, wherein the cross section of the magnetic return component is rectangular or square and the notches are located at corners or sides of the cross section of the magnetic return component, and the positions of the notches are symmetrical to each other. The speaker structure according to claim 1, wherein the magnetic return assembly has a magnetically permeable box body, a magnet, and an upper magnetically permeable body, the magnet is disposed on the bottom surface of the magnetically permeable box body, and the upper magnetically permeable body is disposed on the magnet The magnetic gap is located between the upper magnetically permeable magnet and the magnetic and magnetically permeable box body. The magnetically permeable box body has a rectangular or square cross section and the notches are located at corners or The positions of these notches are symmetrical to each other. The speaker structure according to claim 1, further comprising a plurality of internal electrical connectors, which are disposed on the elastic connection units, the voice coil connection units, or the gaps to electrically connect the voice coils. The speaker structure according to claim 6, further comprising a plurality of external electrical connectors, which are disposed on the bracket connection unit to electrically connect the internal electrical connectors, respectively. The speaker structure according to claim 1, wherein the bottom of the bracket has a plurality of positioning columns, the bracket connection unit has a plurality of positioning holes, the bracket connection unit is connected to the bottom of the bracket, and the positioning columns are respectively provided in the positioning hole. The speaker structure according to claim 1, wherein the elastic connection units are respectively S-shaped.