Patent Publication Number: US-2023156383-A1

Title: Speaker box

Description:
TECHNICAL FIELD 
     The present disclosure relates to the field of electro-acoustic conversion, in particular to a speaker for an electronic audio product. 
     BACKGROUND 
     In the related art, the speaker in the housing of the speaker box is vulnerable when the falling impact acts to the speaker, and the speaker is tend to be breaking. 
     Therefore, it needs to provide a speaker box to solve the above technical problem. 
     SUMMARY 
     An objective of the present disclosure is to provide a speaker with desirable sealing performance. 
     An embodiment of the present disclosure provides A speaker box, comprising: a speaker, comprises a frame, a first vibration system and a magnetic circuit system fixed on the frame; the first vibration system providing a diaphragm vibrate along a first direction; a housing with an accommodation space, comprises: a bottom wall facing the diaphragm, and a sidewall bending and extending from an outer edge of the bottom wall; wherein the speaker received in the accommodation space, and the frame of the speaker comprises a split body of a first frame and a second frame, the second frame extends and fixed to the sidewall. 
     Further, wherein both ends of the first frame are bent inward to form a first connecting part, the second frame is connected to the first connecting part. 
     Further, wherein the first connecting part and the second frame are connected by welding. 
     Further, wherein a limiting portion formed on a side facing the frame of the diaphragm, the limiting portion is connected to the first connecting part. 
     Further, wherein the diaphragm and the frame are integrally formed as a whole. 
     Further, wherein an avoiding groove is recessed on the second frame along the first direction, and the speaker is connected to the housing through the avoiding groove. 
     Further, wherein the magnetic circuit system is welded to the avoiding groove. 
     Further, wherein the first vibration system further comprises: a first coil driving the diaphragm to vibrate along the first direction; a skeleton connecting the first coil and the diaphragm, and an elastic diaphragm assembly elastically supporting the skeleton, the skeleton comprises an skeleton body portion, a first spacer extending from an inner side of the skeleton body portion towards the first coil along the first direction, and a second spacer extending from an outer side of the skeleton body portion towards the elastic diaphragm assembly along the first direction; the elastic diaphragm assembly comprises an elastic diaphragm assembly fixing portion fixed to the frame and an elastic diaphragm assembly vibration portion fixed to the first spacer. 
     Further, wherein further comprises a second vibration system vibrate along a second direction perpendicular to the first direction; the second vibration system comprises a spacing diaphragm, a counterweight, an elastic member and a second coil fixed to the counterweight, the spacing diaphragm comprises a spacing diaphragm fixed portion and a spacing diaphragm vibrating portion formed by bending along the a side of the spacing diaphragm fixing portion; the spacing diaphragm fixing portion is connected to the housing while the spacing diaphragm vibrating portion is connected to the counterweight, and an end of the elastic member is connected to the counterweight while the other end is connected to the housing, the second coil is spaced from the magnetic circuit system along the first direction. 
     Further, wherein the elastic member comprises a second connecting portion and a third connecting portion, an undulating bending structure is providing at an angle between the second connecting portion and the third connecting portion. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       To describe the technical solutions in the embodiments of the present disclosure more clearly, the drawings required for describing the embodiments are briefly described below. Apparently, the drawings in the following description show merely some embodiments of the present disclosure, and those of ordinary skill in the art may still derive other drawings from these drawings without creative efforts. 
         FIG.  1    is a three-dimensional view illustrating a structure of a speaker box according to an embodiment of the present disclosure; 
         FIG.  2    is a exploded view of the speaker shown in  FIG.  1   ; 
         FIG.  3    is an enlarged view of the part A in the  FIG.  2   ; 
         FIG.  4    is a three-dimensional view of the frame of the speaker box shown in  FIG.  1   ; 
         FIG.  5    is a exploded view of the frame shown in  FIG.  4     
         FIG.  6    is an exploded view of the speaker shown in  FIG.  1   . 
         FIG.  7    is a top view of the speaker box with the spacing diaphragm removed shown in  FIG.  1   ; 
         FIG.  8    is a three-dimensional view of the elastic member of the speaker box shown in  FIG.  1   ; 
         FIG.  9    is an exploded view of the speaker box shown in  FIG.  1   ; 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     The technical solutions of the embodiments of the present disclosure are described in detail below with reference to the drawings. Apparently, the described embodiments are merely some rather than all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts should fall within the protection scope of the present disclosure. 
     In  FIGS.  1 - 5   , the speaker box includes a housing  10  with accommodation space, and a speaker  20 , received in the housing  10 . The speaker includes frame  21 , a first vibration system  22  and magnetic circuit system  23 . The first vibration system  22  and magnetic circuit system  23  are fixed on the frame  21 . The first vibration system  22  includes diaphragm  221 . Housing  10  includes a bottom wall  11  facing the diaphragm  221 , a support wall  12  extending from the inner side of the bottom wall  11  toward the speaker  20 , and a sidewall  13  bent and extended at the outer edge of the bottom wall  11 . Frame  21  includes a split body of the first frame  211  and the second frame  212 . The second frame  212  extended toward the side wall  13  and is fixed to the sidewall  13 . 
     Referring to the  FIG.  2   , housing  10  includes a bottom housing  14  and a middle housing  15 . The middle housing  15  and the bottom housing  14  are enclosed to form the accommodating space, and the speaker  20  is enclosed inside housing  10 . One side of the bottom housing  14  protrudes outward to form a sounding hole  16 , and the sounding hole  16  is used to diffuse the sound emitted by the speaker  20 . Specifically, the middle housing  15  has a sleeve-shaped structure, and an opening  17  is provided on the middle  15  corresponding to the sounding hole  16 . The opening  17  is adapted to the sounding hole  16  formed by the protrusion, and the bottom housing  14  has a central and side protrusions plated-shaped structure. 
     Referring to  FIGS.  4 - 5   , both ends of the first frame  211  and the second frame  212  are provided with bending parts, and the bending parts on the first frame  211  are used for the first frame  211  and the second frame  211  to connect. The bent part on the second frame  212  is used to fix the first frame  211  and the second frame  212  to the housing  10 . Specifically, both ends of the first frame  211  are bent inward to form the first connecting part  2111 ; the first connecting part  2111  is connected with the inner wall of the second frame  212  to form an integrated structure. The first connecting part  2111  and the second frame  212  are connected by welding to form an integrated structure. Compared with the static connection methods such as buckle and threaded connection, this embodiment adopts the welding method to connect, making the structure compact and the space occupied is small on the one hand. On the other hand, the first connecting part  2111  formed by bending makes the gap between the first frame  211  and the second frame  212  increase significantly. At the same time, the bending structure can also enhance the overall rigidity of the first frame  211  and the second frame  212 , thereby providing good protection to the internal structure of the speaker box and ensuring the impact resistance and drop resistance of the speaker box. 
     Further, an avoiding groove  2121  is recessed inwardly in the middle section of the second frame  212  along the first direction. The speaker  20  is connected to the housing  10  through the avoiding groove  2121 , making the speaker  20  and the avoiding groove  2121  more compact and reasonable. According to the different positions or connection positions of the speaker  20 , the avoiding groove  2121  can also be provided on the first frame  211 . Meanwhile, the avoiding groove  2121  can be placed on the first frame  211  and the second frame  212  simultaneously. The space occupied by the connection is smaller, and the overall volume is reduced. On the other hand, the connection through multiple points makes the connection structure between the speaker  20  and frame  21  more reliable. Furthermore, the second frame  212  is further provided with arc-shaped grooves  2122  at both ends of the avoiding groove  2121 . 
     Furthermore, in some implementations, the magnetic assembly  231  of the speaker  20  is welded to the second frame  212 . In some optional embodiments, the magnetic assembly  231  can also be welded and connected to the first frame  211  as required or can be welded and connected to the first frame  211  and the second frame  212  simultaneously. 
     The diaphragm  221  has a rectangular ring structure as a whole, and the diaphragm  221  includes a rectangular ring-shaped diaphragm fixing portion  2211  and a convex limiting portion  2212  formed on the side facing the frame  21 . The fixing portion  2211  and frame  21  are connected to the side near the diaphragm  221 . The limiting portion  2212  is connected to the first connecting portion  2111 . Further, the limiting portion  2212  is an arc-shaped column of the self-diaphragm  221  extending in a direction close to frame  21 , and the limiting portion  2212  is clamped on the first connecting portion  2111  or fixedly connected to the first connecting portion  2111 . The connecting portion  2111  is thereby fixedly connected to the fixing portion  2211  of the diaphragm  221  and frame  21 . 
     Further, in some optional embodiments, the diaphragm  221  and the frame  21  are integrally formed as a whole, making the manufacturing process more straightforward and the assembly more convenient. 
     The first vibration system  22  includes a diaphragm  221 , a first coil  222  that drives the diaphragm  221  to vibrate and emit sound in a first direction, and a skeleton  225  that connects the first coil  222  and the diaphragm  221  And an elastic diaphragm assembly  223  that elastically supports the skeleton  225 . The diaphragm  221  also includes a diaphragm vibration portion  2213  formed by bending along the inner side of the annular diaphragm fixing portion  2211 . The diaphragm vibrating portion  2213  is connected to the first coil  222  provided on the magnetic assembly  231 , and the vibration of the first coil  222  drives the diaphragm vibrating portion  2213  to vibrate. Referring to  FIG.  6   , the elastic diaphragm assembly  223  includes an arc-shaped elastic diaphragm assembly fixing portion  2231  and an elastic diaphragm assembly vibration portion  2232  formed by bending along the inner side of the arc-shaped elastic diaphragm assembly fixing portion  2231 . Elastic diaphragm assembly fixing portion  2232  is fixed to frame  21 , and the elastic diaphragm assembly vibrating part  2232  is connected to frame  225 . Specifically, skeleton  225  has a hollow rectangular structure as a whole. It includes a skeleton body portion  2251  located in the middle portion, a first spacer  2252  extending from the inner side of the skeleton body portion  2251  in a first direction toward the first coil  222 , and a second spacer  2253  extending from the skeleton body portion2251. The second spacer  2253  is bent and extended towards the elastic diaphragm assembly  223 . The first spacer  2252  passes through frame  21  and is fixed to the elastic diaphragm assembly  223 . The mainframe body portion  2251  is fixedly connected to the first coil  222 . The outer periphery of frame  225  is fixed to the diaphragm vibration portion  2213  in the middle of the diaphragm  221 . 
     The magnetic circuit system  23  includes a first yoke  231 , a second yoke  232 , and a magnetic assembly  233  sandwiched between the first yoke  231  and the second yoke  232 . The magnet assembly  233  includes a primary magnet  2331  and a secondary magnet  2332  arranged at intervals around the primary magnet  2331 . The first coil  222  is arranged in the magnetic gap formed between the primary magnet  2331  and the secondary magnet  2332 , and the first yoke  231  is connected to frame  21 . The magnetic circuit system  23  drives the first coil  222  to drive the diaphragm  221  to vibrate along the first direction. The first direction is the direction indicated by the arrow y in  FIG.  6   , and in some optional embodiments, the first direction is the vertical direction. 
     The edges of the diaphragm  221  and the elastic diaphragm assembly  223  are fixedly connected to frame  21 , and then fixed to the housing  10  through frame  21 , and through the first spacer  2232  of the frame  225  and the second spacer  2233  to connect the diaphragm  221  and the elastic diaphragm assembly  223 . The skeleton  225 , in turn, connects the vibrating part  2213  of the diaphragm  221  with the first coil  222  in the magnetic circuit system  23 , and then drives the first coil  222  to vibrate through the magnetic circuit system  23 . Then the first coil  222  drives the skeleton  225  to vibrate. At the same time, the skeleton  225  drives the diaphragm  221  and the elastic diaphragm assembly  223  to vibrate in the same direction, finally realizing the sound of the speaker box. 
     The speaker box of this invention further includes a vibrator  30 , and the vibrator  30  includes a second vibration system  31  and a magnetic circuit system  23 . The second vibration system  31  includes a spacing diaphragm  311 , a counterweight  312 , an elastic member  313  and a second coil  314  arranged on both sides of the second yoke  232 . The spacing diaphragm  311  includes a spacing diaphragm fixed portion  3111  and a spacing diaphragm vibrating portion  3112  formed by bending along the inner side of the spacing diaphragm fixing portion  3111 . The spacing diaphragm fixing portion  3111  is connected to the end surface of housing  10 . Then the spacing diaphragm vibrating portion  3112  is connected to the peripheral edge of one end of the counterweight  312 , and one end of the elastic member  313  is connected to the counterweight  312 . The other end is connected to the inner wall of housing  10 . In this way, the counterweight is suspended in housing  10 . The second coil  314  is connected to the counterweight  312  and is arranged opposite to the magnet assembly  233 . The magnetic circuit system  23  drives the second coil  314  to drive the counterweight  312  to vibrate in the second direction. Then the second direction is perpendicular to the first direction, and the arrow x indicates the second direction in  FIG.  6   . However, in some implementations, the second direction is horizontal. 
     Furthermore, referring to  FIGS.  7 - 8   , the elastic member  313  has an L-shaped structure as a whole, and the elastic member  313  includes a second connecting portion  3131  and a third connecting portion  3132 . The second connecting portion  3131 , and the third connecting portion  3132  are also provided with a connecting plate  3133 , one side of which is connected to the second connecting portion  3131 , and the other side is connected to the inner wall of the housing  10  or the counterweight  312 . Alternatively, one side of the connecting plate  3133  is connected to the third connecting portion  3132 , and the other side is connected to the inner wall of housing  10  or the counterweight  312 . In some implementation, the second connecting portion  3131  and the third connecting portion  3132  are arranged at an angle, and the two forms an elastic structure. Further, an undulating bending structure  3134  is provided at the angle between the second connecting portion  3131  and the third connecting portion  3132 . The undulating bending structure  3134  is used to avoid the arched portion  2233  on the elastic diaphragm assembly  223 , making the speaker box integrate the sound-emitting unit  20  and the vibrating unit  30  while keeping the internal structure compact. In addition, the sound generating unit  20  and the vibrating unit  30  share the magnetic circuit system  23  so that the speaker structure of the embodiment of the present invention is more compact and small. 
     It can be known from the above that when the speaker box includes the sound-producing unit  20  and the vibrating unit  30 , the speaker box has at least two operating characteristics. The first coil  222  is connected to a high-frequency current in one working mode to drive the diaphragm  221  to vibrate and produce sound. The second coil  314  is connected to a low-frequency current to drive the counterweight to generate vibration feedback in another operating mode. 
     The above described are merely implementations of the present disclosure. It should be noted here that those of ordinary skill in the art may make improvements without departing from the concept of the present disclosure, but such improvements should fall within the protection scope of the present disclosure.