Patent Publication Number: US-9854341-B2

Title: Microphone head device

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims priority to Taiwanese Patent Application No. 105107610, filed on Mar. 11, 2016. 
     FIELD 
     The disclosure relates to a microphone device, and more particularly to a microphone head device. 
     BACKGROUND 
     Referring to  FIGS. 1 and 2 , a conventional microphone head device includes a tubular connecting seat  11 , a vibration-absorbing ring  12  disposed on a top end of the tubular connecting seat  11 , a microphone head  13  surrounded by the vibration-absorbing ring  12 , a fastener plate  14  disposed on a bottom end of the tubular connecting seat  11 , and a fastener  15  directly securing the microphone head  13  to the tubular connecting seat  11  by extending through the fastener plate  14 . The conventional microphone head device is threadedly fixed into a microphone housing  16  by two screws  18  securing the tubular connecting seat  11  to the microphone housing  16  and is covered by a microphone grille cap  17 . 
     Since the vibration-absorbing ring  12  is made of a soft material, the vibration-absorbing ring  12  can prevent unnecessary vibrations from being transmitted to the microphone head  13 . However, because the fastener  15  is made of a rigid material, vibrations can be easily transmitted from the fastener  15  to the microphone head  13 , such that the microphone head  13  is inevitable to receive noises caused by the vibrations. 
     SUMMARY 
     Therefore, an object of the disclosure is to provide a microphone head device that can prevent the occurrence of unnecessary vibrations that can cause noises. 
     According to a first aspect of the disclosure, a microphone head device includes a microphone head, a mount and a first vibration-absorbing unit. 
     The mount includes a mount ring surrounding the microphone head and having an inner surrounding surface spaced apart from the microphone head, and a plurality of annularly spaced-apart first support rods projecting from the mount ring. 
     The first vibration-absorbing unit is made of a vibration-absorbing material, and includes a first surrounding body and a plurality of annularly spaced-apart first hollow posts. 
     The first surrounding body has a first inner tubular wall sleeved fittingly on the microphone head and having one end inserted between the microphone head and the mount ring, a first radial wall extending radially and outwardly from another end of the first tubular wall, which is located away from the mount ring, and a first outer tubular wall extending from the first radial wall toward the mount ring and surrounding the first inner tubular wall in a spaced apart manner. 
     The first hollow posts are connected to the first outer tubular wall and sleeved respectively on the first support rods. 
     According to a second aspect of the disclosure, a microphone head device includes a microphone head, a mount, a first vibration-absorbing unit, and a tubular connecting seat. 
     The mount includes a mount ring surrounding the microphone head and having an inner surrounding surface spaced apart from the microphone head, and a plurality of annularly spaced-apart first support rods projecting axially from the mount ring. 
     The first vibration-absorbing unit includes a first surrounding body sleeved fittingly on the microphone head and having one end inserted between the microphone head and the mount ring, and a plurality of annularly spaced-apart first hollow posts connected to a periphery of the first surrounding body and sleeved respectively on the first hollow posts. 
     The tubular connecting seat receives and supports the mount and the first vibration-absorbing unit. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Other features and advantages of the disclosure will become apparent in the following detailed description of the embodiment with reference to the accompanying drawings, of which: 
         FIG. 1  is an exploded perspective view of a conventional microphone head device; 
         FIG. 2  is a fragmentary sectional view of the conventional microphone head device assembled to microphone housing and a microphone grille cap; 
         FIG. 3  is an exploded perspective view of a microphone head device according to an embodiment of the present disclosure; 
         FIG. 4  is a perspective view of the embodiment, illustrating an assembly of the microphone head device; and 
         FIG. 5  is a partly sectional view of the embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Referring to  FIGS. 3 to 5 , a microphone head device according to an embodiment of the present disclosure is suitable for mounting on a microphone handle (not shown). The microphone head device includes a tubular connecting seat  3 , a microphone head  7 , a mount  4 , a first vibration-absorbing unit  5  and a second vibration-absorbing unit  6 . 
     The tubular connecting seat  3  is suitable for being disposed on the microphone handle. The tubular connecting seat  3  receives and supports the mount  4  and the first and second vibration-absorbing units  5  and  6 , and includes a tubular body  31 , a hollow cap  32  coaxially disposed on the tubular body  31 , and a washer  33  disposed between the tubular body  31  and the hollow cap  32 . The tubular body  31  has an inner surface  311 , an annular flange  312  projecting radially inwardly from the inner surface  311  and located proximally to an end of the tubular body  31 , and two annularly spaced-apart and axially extending grooves  313  indented from said inner surface  311 . Each groove  313  extends axially from the annular flange  312  to another opposite end of the tubular body  31 . 
     The microphone head  7  has a large-diameter cylindrical part  71 , a small-diameter cylindrical part coaxial with and spaced apart axially from the large-diameter cylindrical part  71 , a radially protruding first annular abutment portion  73  disposed between the large-diameter and small-diameter cylindrical parts  71 ,  72  and radially protruding from the small-diameter cylindrical part  72 , and a radially protruding second annular abutment portion  74  coaxial with and radially protruding from the small-diameter cylindrical part  72 . The second annular abutment portion  74  is axially spaced from the first annular abutment portion  73 . The first annular abutment portion  73  is partly disposed in the tubular connecting seat  3 . The small-diameter cylindrical part  72  and the second annular abutment portion  74  are located within the tubular connecting seat  3 . 
     The mount  4  is received in the tubular connecting seat  3 , and includes a mount ring  41 , a plurality of annularly spaced-apart first support rods  42 , and a plurality of annularly spaced-apart second support rods  43 . 
     The mount ring  41  surrounds the small-diameter cylindrical part  72  of the microphone head  7 , and has an inner surrounding surface  411  spaced apart from the small-diameter cylindrical part  72 , an outer surrounding surface  412  radially opposite to the inner surrounding surface  411 , a top surface  413  radially extending between the inner and outer surrounding surfaces  411 ,  412 , a bottom surface  414  radially extending between the inner and outer surrounding surfaces  411 ,  412  and axially opposite to the top surface  413 , and two radially projecting blocks  415  projecting outwardly from the outer surrounding surface  412  and radially opposite to each other. The projecting blocks  415  are respectively engaged with the grooves  313  to prevent the mounting ring  4  from rotating relative to the tubular connecting seat  3 . 
     The annularly spaced-apart first support rods  42  project axially from the top surface  413  in parallel to the microphone head  7 . The annularly spaced-apart second support rods  43  project axially from the bottom surface  414  in parallel to the microphone head  7  and in a direction opposite to the first support rods  42 . The first support rods  42  are respectively aligned with the second support rods  43 . 
     The first vibration-absorbing unit  5  is made of a vibration-absorbing material and is received in the tubular connecting seat  3 . In this embodiment, the first vibration-absorbing unit  5  is made of a soft rubber material. Alternatively, the first vibration-absorbing unit  5  may be made of a soft plastic material. The first vibration-absorbing unit  5  includes a first surrounding body  51  and a plurality of annularly spaced-apart first hollow posts  52  connected to a periphery of the first surrounding body  51 . 
     The first surrounding body  51  has a first inner tubular wall  511 , a first radial wall  512  and a first outer tubular wall  513 . The first inner tubular wall  511  is sleeved fittingly on the small-diameter cylindrical part  72  of the microphone head  7  and has one end (i.e., the lower end  514 ) inserted between the small-diameter cylindrical part  72  and the mount ring  41 . The first radial wall  512  extends radially and outwardly from another end (i.e., the upper end) of the first inner tubular wall  511 , which is located away from the mount ring  41  and opposite to the lower end  514  of the first inner tubular wall  511 . The first outer tubular wall  513  extends from the first radial wall  512  toward the mount ring  41  and surrounds the first inner tubular wall  511  in a spaced apart manner. The first inner tubular wall  511  is longer than the first outer tubular wall  513 . In addition, the first vibration-absorbing unit  5  further has a first abutment flange  53  that is disposed at a junction of the first inner tubular wall  511  and the first radial wall  512 , and that is sleeved on the small-diameter cylindrical part  72  of the microphone head  7  to abut against the first annular abutment portion  73  of the microphone head  7 . 
     The annularly spaced-apart first hollow posts  52  are connected to an outer periphery of the first outer tubular wall  513  and are sleeved respectively on the first support rods  42 . In this embodiment, the inner surface  311  of the tubular connecting seat  3  surrounds the first hollow posts  52 . 
     The second vibration-absorbing unit  6  is made of a vibration-absorbing material and is received in the tubular connecting seat  3 . In this embodiment, the second vibration-absorbing unit  6  is made of a soft rubber material. Alternatively, the second vibration-absorbing unit  6  may be made of a soft plastic material. The second vibration-absorbing unit  6  including a second surrounding body  61  sleeved fittingly on the microphone head  7  at one side of the mounting ring  41  opposite to the first surrounding body  51 , and a plurality of annularly spaced-apart second hollow posts  62  connected to a periphery of the second surrounding body  61 . 
     The second surrounding body  61  has a second inner tubular wall  611 , a second radial wall  612  and a second outer tubular wall  613 . The second inner tubular wall  611  is sleeved fittingly on the small-diameter cylindrical part  72  of the microphone head  7  and has one end  614  inserted between the small-diameter cylindrical part  72  and the mount ring  41  in close proximity to the lower end  514  of the first inner tubular wall  511 . The second radial wall  612  extends radially and outwardly from another end of the second tubular wall  611 , which is located away from the mount ring  41  and opposite to the end  614  of the second inner tubular wall  611 . The second outer tubular wall  613  extends from the second radial wall  612  toward the mount ring  41  and surrounds the second inner tubular wall  611  in a spaced apart manner. The second inner tubular wall  611  is longer than the second outer tubular wall  613 . In addition, the second vibration-absorbing unit  6  further has a second abutment flange  63  that is disposed at a junction of the second inner tubular wall  611  and the second radial wall  612 , and that is sleeved on the small-diameter cylindrical part  72  of the microphone head  7  to abut against the second annular abutment portion  74  of the microphone head  7 . 
     The annularly spaced-apart second hollow posts  62  are connected to an outer periphery of the second outer tubular wall  613  and are sleeved respectively on the second support rods  43 . The first hollow posts  52  are respectively aligned with the second hollow posts  62 . In this embodiment, the inner surface  311  of the tubular connecting seat  3  surrounds the second hollow posts  62 . 
     The first and second vibration-absorbing units  5  and  6  have multistage vibration-absorbing portions. Because the first hollow posts  52  are arranged in a spaced-apart fashion, they can easily make elastic deformation by extending into the gaps thereamong to absorb the vibration energy transmitted from the tubular connecting seat  3 . Furthermore, because the first outer tubular wall  513  are spaced apart from the first inner tubular wall  511 , it can easily make elastic deformation by extending into the gap therebetween to additionally absorb the vibration energy transmitted from the tubular connecting seat  3  through the first hollow posts  52 . In this disclosure, the second vibration-absorbing unit  6  is substantially identical to the first vibration-absorbing unit  5  in structure, thereby performing the same function as the first vibration-absorbing unit  5 . On the other hand, since the small-diameter cylindrical part  72  of the microphone head  7  is spaced apart from the mount  4  by the first and second inner tubular walls  511 ,  611  of the first and second vibration-absorbing units  5 ,  6 , the vibration energy can be prevented from being directly transmitted to the microphone head  7 . Moreover, because the microphone head  7  has no direct connection with other rigid components, the microphone head device of the present disclosure can prevent the occurrence of noises caused by vibrations transmitted through the rigid components. 
     In the description above, for the purposes of explanation, numerous specific details have been set forth in order to provide a thorough understanding of the embodiment. It will be apparent, however, to one skilled in the art, that one or more other embodiments may be practiced without some of these specific details. It should also be appreciated that reference throughout this specification to “one embodiment,” “an embodiment,” an embodiment with an indication of an ordinal number and so forth means that a particular feature, structure, or characteristic may be included in the practice of the disclosure. It should be further appreciated that in the description, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of various inventive aspects. 
     While the disclosure has been described in connection with what is considered the exemplary embodiment, it is understood that this disclosure is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.