Patent Publication Number: US-10785572-B2

Title: Speaker and terminal component thereof

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This nonprovisional application claims priority under 35 U.S.C. § 119 to Chinese Patent Application No. CN 201810348031.4, which was filed on Apr. 18, 2018, and which is herein incorporated by reference. 
     BACKGROUND 
     Technical Field 
     This application relates to a speaker and a terminal component thereof, and in particular, to a terminal component connected to a voice coil tensile wire of the speaker. 
     Related Art 
     A basic principle for sound production in a speaker is that an electronic signal is input into a voice coil so as to generate a magnetic field and a back and forth piston movement in a magnetic gap with the help of mutual attraction and repulsion actions between magnetic poles is made to the voice coil. A diaphragm vibrates according to the back and forth piston movement of the voice coil to drive the air to resonate. Auditory verves spread all over human ear membranes and, therefore, human ears can receive the vibration and hear a sound. Therefore, the electrical connection of the voice coil is critically important. 
     Traditionally, tensile wires of the voice coil 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 be prevented only when a length of the support piece is greater than an external diameter of the magnet. A larger support piece indicates a larger external diameter of a housing. In this way, overall size selection and structure design of a speaker are easily affected. 
     In addition, a material of the support piece is generally plastic, because the material needs to be insulated and easily molded. A support piece for a tweeter is generally not intended to be excessively thick, and even the thinner the better, so as to reduce an overall height of the voice coil. Therefore, a thickness of the support piece is generally around 1.6 mm. However, when tensile wires of the voice coil are welded to the terminal plate, a temperature (430° C.) of a solder tool easily causes the support piece to distort, leaving hidden troubles. 
     In addition, the terminal plate is connected to an input signal line by using two methods: (1) The signal line is directly welded to the terminal plate by soldering. The disadvantages of this process include that dismounting and changing the tweeter are inconvenient. In addition, a soldering operation may burn the plastic support piece to distort, consequently pulling apart the tensile wire of the voice coil. (2) The connection is implemented by using an interconnection component of the terminal plate. The disadvantages of this connection include that mounting and changing the tweeter are inconvenient, and pulling and inserting the interconnection component of the terminal plate require a relatively large force, consequently easy to break the plastic support piece. 
     SUMMARY 
     In view of this, certain exemplary embodiments of this application provide a speaker and a terminal component thereof. The terminal component in this application is applied to the speaker, and comprises: two terminals, a sleeve seat, and two fixing heads. Each terminal includes a terminal head and a terminal body. The sleeve seat includes two terminal blocks. The two terminal blocks respectively accommodate the two terminal bodies, so that the two terminal heads are exposed outside the sleeve seat. The two fixing heads are respectively combined with the two terminal heads, to respectively fasten two wires to the two terminals. 
     In an embodiment, each terminal head includes a punch hole, respectively for the two wires to pass through. 
     The speaker according to certain exemplary embodiments in this application includes: a voice coil, a support piece, a washer, two wires, and the terminal component described in the foregoing. The voice coil includes two tensile wires. The support piece surrounds the voice coil. The support piece comprises an upper surface and a lower surface, and the two tensile wires are located on the upper surface. The washer is located under the support piece. The two wires are respectively connected to the two tensile wires on an edge of the support piece. 
     In an embodiment, the upper surface of the support piece comprises two tensile wire guiding slots in which the two tensile wires are respectively placed. 
     In an embodiment, the lower surface of the support piece comprises a first wire guiding slot, an upper surface of the washer comprises a second wire guiding slot, and the first wire guiding slot and the second wire guiding slot are corresponding to each other, so that the two wires are located between the first wire guiding slot and the second wire guiding slot. 
     In an embodiment, the speaker further includes a T-shaped yoke. The T-shaped yoke comprises a hole, the washer comprises a penetrating hole, and the two wires pass through the penetrating hole and the hole, and are respectively fastened to the two terminals. Preferably, the speaker further includes an aluminum pipe. The two wires pass through the aluminum pipe and two ends of the aluminum pipe are respectively located in the penetrating hole of the washer and the hole of the T-shaped yoke. 
     In an embodiment, the speaker further includes a heat dissipation chamber. The terminal component is located in the heat dissipation chamber and an outer surface of the heat dissipation chamber is a plurality of heat dissipation fins. 
     In an embodiment, the speaker further includes sound-absorbing sponge. The sound-absorbing sponge is located in the heat dissipation chamber and the sound-absorbing sponge is located on the terminal component. 
     In summary, the terminal component in this application is hidden inside the heat dissipation chamber (for example, a rear chamber of a tweeter) and does not occupy any external size. That is, an interface location is hidden at the bottom of the speaker. When an input signal line is connected, it needs only to use a standard plug as a wiring terminal, which is similar to a sound box wiring manner, and is convenient for inserting, removing, and changing the speaker. In this way, various disadvantages of solder wiring can be further prevented, thereby improving a compression effect, improving structural compactness and stability, and eliminating phase interference, to obtain a good linear reaction. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will become more fully understood from the detailed description given herein below for illustration only, and thus are not limitative of the present invention, and wherein: 
         FIG. 1  is a schematic perspective diagram of an embodiment of a speaker according to this application; 
         FIG. 2  is a partial schematic sectional diagram of  FIG. 1 ; 
         FIG. 3  is an explosive schematic perspective diagram of  FIG. 1 ; 
         FIG. 4A  is an explosive schematic perspective diagram of a terminal component according to this application; and 
         FIG. 4B  is a partial schematic perspective diagram of a terminal component according to this application. 
     
    
    
     DETAILED DESCRIPTION 
     To facilitate reading, this document points out “upper”, “lower”, “left”, and “right” according to the figures. Its objective is to point out relative reference locations of components, but not to limit this application. 
       FIG. 1  is a schematic perspective diagram of a speaker  1 . Referring to both  FIG. 2  and  FIG. 3 , the speaker  1  includes a voice coil  25 , a support piece  22 , a washer  21 , two wires  12 , and a terminal component  11 . The two wires  12  are substantially two parallel wires. The voice coil  25  includes two tensile wires  251  extending outward. The support piece  22  surrounds the voice coil  25 . The two tensile wires  251  are located on an upper surface of the support piece  22 . Preferably, the upper surface of the support piece  22  includes two tensile wire guiding slots  221  in which the two tensile wires  251  are placed. The washer  21  is located under the support piece  22 . Preferably, the lower surface of the support piece  22  comprises a first wire guiding slot  222 , an upper surface of the washer  21  comprises a second wire guiding slot  211 , and the first wire guiding slot  222  and the second wire guiding slot  211  are corresponding to each other, so that the two wires  12  are located between the first wire guiding slot  222  and the second wire guiding slot  211 . The two wires  12  are respectively connected to the two tensile wires  251 , for example, directly welded to the two tensile wires  251 . A connection hole  223  is disposed on an edge of the support piece  22 , so that the two wires  12  extend downward to the terminal component  11  after the welding. 
     The tensile wires  251  are welded to the wires  12  and, therefore, the support piece  22  may be prevented from being damaged by scalding. In addition, a terminal plate structure may be omitted when the wires  12  are used. Therefore, an external diameter of the support piece  22  may be less than an external diameter of a magnet  27 , and an overall size of the speaker  1  may be further decreased. 
     In an embodiment, the speaker  1  further includes a T-shaped yoke  23 . The T-shaped yoke  23  includes a hole  231 . The washer  21  includes a penetrating hole  212 . The two wires  12  pass through the penetrating hole  212  and the hole  231 . Preferably, the speaker  1  further includes an aluminum pipe  13  and the two wires  12  pass through the aluminum pipe  13 . Two ends of the aluminum pipe  13  are located in the penetrating hole  212  of the washer  21  and the hole  231  of the T-shaped yoke  23 , respectively. The aluminum pipe  13  additionally has a leading function, to lead the two wires  12  to successfully reach the terminal component  11 , and prevent interference to and from another component (such as the T-shaped yoke or the magnet). 
     In an embodiment, the speaker  1  further includes 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 speaker  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 internal space for placing the terminal component  13 , but also the internal space of the heat dissipation chamber  10  may reduce a treble resonance frequency. The fin structure of the external surface of the heat dissipation chamber  10  may further speed up heat dissipation. 
     Referring to  FIG. 4A  and  FIG. 4B , the terminal component  11  includes two terminals, a sleeve seat  112 , and two fixing 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  respectively accommodate the two terminal bodies  111 , and the two terminal heads  1111  are exposed outside the sleeve seat  112 . The two fixing heads  114  are respectively combined with the two terminal heads  1111 , to respectively fasten two wires  12  to the two terminals. For example, the fixing heads  114  may be nuts or the like, and the terminal heads  1111  are of a stud type, so the fixing heads  114  and the terminal heads  1111  may be fastened to each other through screwing. The two wires  12  may surround the terminal heads  1111 , and may be more strongly fastened by using a shim body  113 . Preferably, each terminal head  111  includes a punch hole  110  through which the wires  12  may pass. 
     The terminal component may be hidden inside the heat dissipation chamber (for example, a rear chamber of a tweeter) and does not occupy any external size. That is, an interface location is hidden at the bottom of the speaker. When an input signal line is connected, it needs only to use a standard plug as a wiring terminal, which is similar to a sound box wiring manner, and is convenient for inserting, removing, and changing the speaker. In this way, various disadvantages of solder wiring can be further prevented, thereby improving a compression effect, improving structural compactness and stability, and eliminating phase interference, to obtain a good linear reaction. 
     Although this application is disclosed above by using the embodiments, the embodiments are not used for limiting this application. Any person skilled in the art may perform some modifications and improvements without disobeying the spirit and scope of this application. Therefore, the protection scope of this application should be subject to the scope defined by the claims.