Loudspeaker and its connection component

Abstract

Loudspeaker (1) comprising: a voice coil (25) having two tensile wires (251); a support piece (22) surrounding the voice coil (25), the support piece (22) having an upper surface and a lower surface, and the two tensile wires (251) being located on a first surface; an annular disc (21) located under the support piece (22); two wires (12), wherein the two wires (12) are each connected to the two tensile wires (251) at one edge of the support piece (22), wherein the first surface of the support piece (22) has two guide slots (221) for tensile wires in which the two tensile wires (251) are respectively placed.

Description

BACKGROUND TECHNICAL AREA

[0001] This application relates to a loudspeaker and to its connecting component, and in particular to a connecting component connected to a fixed wire of the voice coil of the loudspeaker. STATE OF THE ART

[0002] A basic principle for sound generation in a loudspeaker is that an electronic signal is transmitted to a voice coil to create a magnetic field. Mutual attraction and repulsion between the magnetic poles causes a piston to move back and forth within a magnetic gap to the voice coil. A diaphragm vibrates according to the forward and backward movement of the voice coil's piston to cause the air to vibrate. Auditory nerves are distributed throughout the human ear membranes. This is how human ears can receive the vibrations and "hear" a sound. Thus, the electrical connection of the voice coil is crucial.

[0003] Traditionally, the voice coil's fixed wires are welded to a terminal plate for electrical connection. The terminal plate is riveted to a support piece. Therefore, interference between the terminal plate and a magnet can only be prevented if the length of the support piece is greater than the magnet's outer diameter. A larger support piece indicates a larger outer diameter of a cabinet. This easily influences the selection of the overall size and structural design of a speaker.

[0004] In addition, the support piece is usually made of plastic because the material needs to be insulated and easily moldable. A tweeter support piece shouldn't usually be excessively thick; the thinner it is, the better, to reduce the overall height of the voice coil and speaker. Therefore, the thickness of the support piece is usually about 1.6 mm. However, when welding solid voice coil wires to the terminal plate, the temperature (430 °C) of the solder easily causes the support piece to warp, creating hidden problems and deformations.

[0005] In addition, the terminal board is connected to an input signal line using two methods: (1) The signal wire is soldered directly to the terminal plate. The disadvantages of this method include the inconvenience of removing and replacing the tweeter. Furthermore, soldering can burn and distort the plastic support piece, thus stretching the voice coil's fixed wire. (2) The connection is implemented using an intermediate connection component of the terminal plate. The disadvantages of this method include that attaching and replacing the tweeter is inconvenient, and pulling out and inserting the intermediate connection piece of the terminal plate requires relatively large force. Consequently, the plastic support piece is easily broken.

[0006] The application DE 699 34 119 T2 discloses a sound and vibration unit in a housing with a base plate which is soldered to a printed circuit board and has connection terminals for drive signals, wherein the rear sides of the base plate and the terminals are on one level.

[0007] The application DE 694 28 935 T2 discloses a tape reel wire with magnetic material for improving the efficiency of the voice coil, wherein the wire is wound around a reel and its ends are used as terminals to drive the membrane paper via the voice coil.

[0008] The loudspeaker disclosed in the application US 5 583 944 A comprises a diaphragm with a voice coil supported by a support and connected to an electrical relay terminal via connecting wires, wherein a cup-shaped frame supports the diaphragm and a damper, and the connecting wires are arranged so as to avoid low-frequency resonances.

[0009] In the application US 2010 / 0 195 863 A1, a loudspeaker is disclosed comprising a frame, a magnetic circuit section and a vibration section with a drive cone and a membrane, wherein the drive cone has outer and inner steps to which gold threads are attached.

[0010] The loudspeaker device disclosed in the application US 2007 / 0 003 080 A1 consists of a frame with a diaphragm at the front and a magnetic circuit with a polygonal magnet at the back, which is arranged coaxially to the diaphragm in order to drive it. SUMMARY

[0011] Against this background, this application specifies a loudspeaker and its connection component. In this application, the connection component is attached to the loudspeaker and comprises two terminals, a sleeve seat, and two fastening heads. Each terminal has a connection head and a connection body. The sleeve seat has two connection blocks. The two connection blocks each receive the two connection bodies such that the two connection heads are exposed outside the sleeve seat. The two fastening heads are each combined with a different one of the two connection heads to fasten one of the two wires to a different one of the two terminals.

[0012] In one embodiment, each terminal head has a punched hole so that the two wires can pass through each.

[0013] The loudspeaker in this application comprises a voice coil, a support piece, a washer, two wires, and the connection component described above. The voice coil has two tensile wires. The support piece surrounds the voice coil. The support piece has an upper surface and a lower surface, and the two tensile wires are located on the upper surface. The washer is located below the support piece. The two wires are each connected to the two tensile wires at one edge of the support piece.

[0014] In addition, the upper surface of the support piece has two guide slots for tensile wires, into which the two tensile wires are placed.

[0015] In one embodiment, the lower surface of the support piece has a first wire guide slot, an upper surface of the annular disc has a second wire guide slot, and the first wire guide slot and the second wire guide slot correspond to each other such that the two wires are located between the first wire guide slot and the second wire guide slot.

[0016] In one embodiment, the loudspeaker further comprises a T-shaped yoke. The T-shaped yoke has a hole, the annular disc has a through-hole, and the two wires extend through the through-hole and the hole and are respectively attached to the two terminals. Preferably, the loudspeaker further comprises an aluminum tube. The two wires extend through the aluminum tube, and two ends of the aluminum tube are located in the through-hole of the annular disc and the hole of the T-shaped yoke, respectively.

[0017] In one embodiment, the loudspeaker further includes a heat dissipation chamber. The terminal component is located within the heat dissipation chamber, and an outer surface of the heat dissipation chamber is a plurality of heat dissipation fins.

[0018] In one embodiment, the loudspeaker further comprises a sound-absorbing sponge. The sound-absorbing sponge is located in the heat dissipation chamber, and the sound-absorbing sponge is located on the connection component.

[0019] In summary, the terminal component in this invention is concealed in the heat dissipation chamber (e.g., a rear chamber of a tweeter) and occupies an external space; that is, an interface position is concealed at the bottom of the speaker. When connecting an input signal line, only a standard plug is needed as the wiring terminal, which is similar to a sound box wiring style and convenient for inserting, removing, and replacing the speaker. In this way, various disadvantages of solder wiring can be further counteracted. This improves the compression effect, enhances structural compactness and stability, and eliminates phase interference to obtain a good linear response. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be more fully understood from the detailed description given hereinafter, which is given by way of illustration only and thus is not limitative of the present invention, wherein: Fig. Figure 1 is a schematic perspective view of an embodiment of a loudspeaker according to this application; Fig. 2 a schematic partial sectional view of Fig. 1 is; Fig. 3 a schematic perspective exploded view of Fig. 1 is; Fig. 4A is a schematic exploded perspective view of a connector component according to this application; and Fig. 4B is a schematic partial perspective view of a connector component according to this application. DETAILED DESCRIPTION

[0021] To simplify reading, "top," "bottom," "left," and "right" are used throughout this document as shown in the figures. The purpose is to indicate relative reference points of components, not to limit this application.

[0022] Fig. 1 is a schematic perspective view of a loudspeaker 1, wherein reference is also made to both Fig. 2 and Fig. 3. The loudspeaker 1 comprises a voice coil 25, a support piece 22, a washer 21, two wires 12, and a terminal component 11. The two wires 12 are essentially and preferably two parallel wires. The voice coil 25 has two tensile wires 251 extending outwardly. The support piece 22 surrounds the voice coil 25. The two tensile wires 251 are located on a surface, preferably the upper surface, of the support piece 22. Preferably, the appropriate surface, in one example the upper surface, of the support piece 22 has two tensile wire guide slots 221 into which the two tensile wires 251 are to be and are placed. The washer 21 is located below the support piece 22.Preferably, the lower surface of the support piece 22 has a first wire guide slot 222, an upper surface of the annular disc 21 has a second wire guide slot 211, and the first wire guide slot 222 and the second wire guide slot 211 correspond to each other such that the two wires 12 are located between the first wire guide slot 222 and the second wire guide slot 211. The two wires 12 are each connected to the two tensile wires 251, for example, directly welded to the two tensile wires 251. A connection hole 223 is arranged on one edge of the support piece 22 such that the two cables 12 extend to the connection component 11 after welding, downward in the figures.

[0023] The tensile wires 251 are welded to the cables 12. Therefore, the support piece 22 can be prevented from being damaged by overheating. In addition, a terminal plate structure can be omitted when the wires 12 are used. Therefore, the outer diameter of the support piece 22 can be smaller than the outer diameter of a magnet 27. The overall size of the speaker 1 can thus be further reduced.

[0024] In one embodiment, the loudspeaker 1 further comprises a T-shaped yoke 23. The T-shaped yoke 23 has a hole 231. The annular disc 21 has a through-hole 212. The two wires 12 pass through the through-hole 212 and the hole 231. Preferably, the loudspeaker 1 further comprises an aluminum tube 13, and the two wires 12 pass through the aluminum tube 13. Two ends of the aluminum tube 13 are located in the through-hole 212 of the annular disc 21 and the hole 231 of the T-shaped yoke 23, respectively. The aluminum tube 13 additionally has a guiding function to guide the two wires 12 so that they successfully reach the connecting component 11 and to prevent interference to and from another component (such as the yoke or the magnet).

[0025] In one embodiment, the loudspeaker 1 may further include a heat dissipation chamber 10. The terminal component 11 is located in the heat dissipation chamber 10, and an outer surface of the heat dissipation chamber 10 is a plurality of heat dissipation fins. Preferably, the loudspeaker 1 further includes a sound-absorbing sponge 26. The sound-absorbing sponge 26 is also located in the heat dissipation chamber 10, and the sound-absorbing sponge 26 is located above the terminal component 11. Not only does the heat dissipation chamber 10 provide an internal space for placing the terminal component 11, the internal space of the heat dissipation chamber 10 can also reduce a resonance frequency in the high frequency range. The fin structure of the outer surface of the heat dissipation chamber 10 can further accelerate heat dissipation.

[0026] On Fig. 4A and Fig.Referring to Fig. 4B, the terminal component 11 may further include two terminals, a sleeve seat 112, and two fastening heads 114. Each terminal includes a terminal head 1111 and a terminal body 111. The sleeve seat 112 includes two terminal blocks 1120. The two terminal blocks 1120 each receive the two terminal bodies 111, and the two terminal heads 1111 are exposed outside the sleeve seat 112. The two fastening heads 114 are each combined with a different one of the two terminal heads 1111 to fasten one of the two wires 12 to a different one of the two terminals. The fastening heads 114 may be, for example, nuts or the like. The terminal heads 1111 are stud-like, so that the fastening heads 114 and the terminal heads 1111 can be fastened to each other by means of screws.The two wires 12 can surround the terminal heads 1111 and can be more firmly secured using a washer body 113. Preferably, each terminal head 1111 has a punched hole 110 through which the wires 12 can pass.

[0027] The connection component can be concealed within the heat dissipation chamber (for example, in the rear chamber of a tweeter) and does not occupy any external space. This means that an interface position is concealed at the bottom of the speaker. When an input signal line is connected, only a standard plug is used as a wiring connection, which is similar to a sound box wiring style and is convenient for inserting, removing, and replacing the speaker. In this way, various disadvantages of solder wiring can be further counteracted. This improves the compression effect, enhances structural compactness and stability, and eliminates phase interference to achieve a good linear response.

[0028] Although this application is disclosed above using the embodiments, the embodiments are not used to limit this application. Anyone skilled in the art can make some modifications and improvements without departing from the spirit and scope of this application. Therefore, the scope of this application should be within the scope defined by the claims.

Claims

[1] Loudspeaker (1) comprising: a voice coil (25) having two tensile wires (251); a support piece (22) surrounding the voice coil (25), the support piece (22) having an upper surface and a lower surface, and the two tensile wires (251) being located on a first surface; an annular disc (21) located under the support piece (22); two wires (12), wherein the two wires (12) are each connected to the two tensile wires (251) at one edge of the support piece (22), wherein the first surface of the support piece (22) has two guide slots (221) for tensile wires in which the two tensile wires (251) are respectively placed. [2] Loudspeaker (1) according to claim 1, wherein a second surface of the support piece (22) opposite the first surface has a first wire guide slot (222), an upper surface of the annular disc (21) has a second wire guide slot (211), and the first wire guide slot (222) and the second wire guide slot (211) correspond to each other such that the two wires (12) are located between the first wire guide slot (222) and the second wire guide slot (211). [3] A loudspeaker (1) according to claim 1 or claim 2, further comprising a T-shaped yoke (23), wherein the T-shaped yoke (23) has a hole (231), the washer (21) has a through-hole (212), and the two wires (12) pass through the through-hole (212) and the hole (231) and are respectively attached to the two terminals. [4] The loudspeaker (1) according to claim 3, further comprising an aluminum tube (12), wherein the two wires (12) pass through the aluminum tube (13) and two ends of the aluminum tube (13) are located in the through hole (212) of the annular disc (21) and the hole (231) of the T-shaped yoke (23), respectively. [5] The loudspeaker (1) according to any one of claims 1 to 4, further comprising a heat dissipation chamber (10), wherein the terminal component (11) is located in the heat dissipation chamber (10), and an outer surface of the heat dissipation chamber (10) is a plurality of heat dissipation fins. [6] The loudspeaker (1) according to any one of claims 1 to 5, further comprising a sound-absorbing sponge (26), wherein the sound-absorbing sponge (26) is located in the heat dissipation chamber (10) and the sound-absorbing sponge (26) is located on the terminal component (11). [7] Loudspeaker (1) according to one of claims 1 to 6, wherein the first surface is the upper surface, which is the surface closer to the diaphragm of the loudspeaker (1). [8] Loudspeaker (1) according to one of claims 1 to 7, further comprising a connection component (11), wherein the connection component (11) comprises: two terminals, each having a terminal head (1111) and a terminal body (111); a sleeve seat (112) having two terminal blocks (1120), the two terminal blocks (1120) each receiving the two terminal bodies (111) such that the two terminal heads (1111) are exposed outside the sleeve seat (112); and two fastening heads (114), each combined with another of the two connection heads, in order to fasten one of the two wires to another of the two connections. [9] Loudspeaker (1) according to claim 8, wherein each terminal head (1111) has a punched hole (110) to allow the two wires (12) to pass therethrough, respectively.

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