Patent Publication Number: US-10764689-B2

Title: Speaker

Description:
TECHNICAL FIELD 
     The present disclosure relates to acoustic design technology, and particularly relates to a speaker. 
     BACKGROUND 
     In related technologies, a speaker includes a housing and a sound unit accommodated in the housing. A sound outlet is disposed on a side wall of the housing. A front cavity is formed between the sound unit and the housing. A front cavity channel and a side cavity on one side of the front cavity channel are disposed in the housing. The front cavity channel is connected between the front cavity and the sound outlet. 
     However, with respect to the speaker in the related technologies, if the sound unit is far away from the sound outlet, the front cavity channel is so long as to exceed a requirement for designing the front cavity. Generally, a cover plate is divided to add a smaller cavity on one side of the front cavity, in order to improve quality on audio high-frequency resonance. However, in this way, more parts are formed, assembling processes are complicated and an identical size of a channel between the two cavities is not guaranteed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded view of a speaker in the present disclosure; 
         FIG. 2  is a schematic structural view of a first cover plate of the speaker in the present disclosure; 
         FIG. 3  is a schematic structural view of a first cover plate of the speaker in the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure is described in detail below with reference to  FIGS. 1 to 3 . 
     As shown in  FIGS. 1 to 3 , the present disclosure relates to a speaker  100  which includes a housing  110  and a sound unit  120  accommodated in the housing  110 . A sound outlet  111  is disposed on one side wall of the housing  110 . A front cavity  130  is formed between the sound unit  120  and the housing  110 . A front cavity channel  131  and a side cavity  140  on one side of the front cavity channel  131  are disposed in the housing  110 . The front cavity channel  131  is connected between the front cavity  130  and the sound outlet  111 . The speaker  100  further includes a connecting channel  150  which is formed by injection molding. The connecting channel  150  is connected between the side cavity  140  and the front cavity channel  131 . The connecting channel  150  includes a bottom wall  150 , a side wall  152  which is formed by extending the bottom wall  150  towards the sound unit  120 , and a top wall  153  which is connected to the side wall  152 . 
     With respect to the speaker  100  with a structure of this embodiment, the front cavity channel  131  and the side cavity  140  on one side of the front cavity channel  131  are disposed in the housing. The front cavity channel  131  is connected between the front cavity  130  and the sound outlet  111 . The speaker  100  further includes the connecting channel  150  formed by injection molding. The connecting channel  150  is connected between the side cavity  140  and the front cavity channel  131 . The connecting channel  150  includes the bottom wall  150 , the side wall  152  which extends from the bottom wall  151 , and the top wall  153  which is connected to the side wall  152 . In this way, the connecting channel  150  is formed by injection molding to effectively simplify complexity of a mold and effectively simplify assembling processes. In addition, the mold&#39;s stable molding may guarantee an identical size of the connecting channel  150 , so that interchangeability therebetween may be improved, thereby effectively reducing cost for manufacturing the speaker  100 . Further, the disposed side cavity  100  may effectively improve quality on audio high-frequency resonance and acoustic performance of the speaker  100 . 
     It should be noted that what type of injection molding to form the connecting channel  150  is not defined. For example, a kissing-off position may be added on one side of the front cavity channel  131 . The connecting channel  150  may be injection-molded through kissing-off between a mold slider and a mold core. Of course, in addition to this, other injection molding methods may be used. 
     As shown in  FIGS. 1 and 2 , the side wall  152  includes a first side wall  152   a  and a second side wall  152   b  adjacent to the first side wall  152   a . The top wall  153  is connected to the second side wall  152   b  with a through hole  152   b   1  through an entire thickness of the second side wall, and the through hole  152   b   1  is connected between the side cavity  140  and the front cavity channel  131 . 
     As shown in  FIGS. 1 and 2 , the bottom wall  151 , the first side wall  152   a  and the second side wall  152   b  are located in the side cavity  140 . The top wall  153  is flush with an upper surface of the front cavity channel  131 . 
     As shown in  FIG. 1 , the housing  110  includes a first cover plate  112  and a second cover plate  113  that are disposed opposite to each other, and the front cavity  130  is formed between the first cover plate  112  and the sound unit  120 . The front cavity channel  131  and the side cavity  140  are disposed in the first cover plate  112 . The first cover plate  112  is disposed with a welding rib  160  around the side cavity  140 . When the first cover plate  112  and the second cover plate  113  are closed together, the side cavity  140  is connected with the front cavity channel  131  only through the connecting channel  150 . 
     The above-described are only embodiments of the present disclosure. It should be noted that skilled person in the art may make improvements without departing from the concept of the present disclosure. All these improvements fall into the protection scope of the present disclosure.