Abstract:
A Bluetooth transmitter with features to reduce the likelihood of unwitting loss includes a first housing, a second housing, a circuit board, and a button. The second housing couples to the first housing. A side of the second housing opposite to the first housing defines at least one groove for connecting to another housing or a holder. The circuit board is secured in the second housing. The button couples to the first housing and connects to the circuit board through the first housing. The button is configured to initiate a Bluetooth signal transmission.

Description:
FIELD 
       [0001]    The subject matter herein generally relates to assembly of a Bluetooth transmitter. 
       BACKGROUND 
       [0002]    Bluetooth transmitters are normally designed in small sizes for convenient carrying. Patients in bad health may carry a Bluetooth transmitter with them everywhere as an emergency alarm. However, patients may drop or lose the Bluetooth transmitter due to its small size. A design and structure should be improved to make the loss and mishandling of the Bluetooth transmitter less likely. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0003]    Many aspects of the disclosure can be better understood with reference to the following figures. The components in the figures are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout several views. 
           [0004]      FIG. 1  is an isometric view of a first exemplary embodiment of a Bluetooth transmitter. 
           [0005]      FIG. 2  is another isometric view of the Bluetooth transmitter of  FIG. 1 . 
           [0006]      FIG. 3  is an exploded view of the Bluetooth transmitter of  FIG. 1 . 
           [0007]      FIG. 4  is another exploded view of the Bluetooth transmitter of  FIG. 1 . 
           [0008]      FIG. 5  is a cross-sectional view of the Bluetooth transmitter of  FIG. 1  taken along line V-V. 
           [0009]      FIG. 6  is an isometric view of a second exemplary embodiment of the Bluetooth transmitter. 
           [0010]      FIG. 7  is an exploded view of the Bluetooth transmitter of  FIG. 6 . 
       
    
    
     DETAILED DESCRIPTION 
       [0011]    It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the exemplary embodiments described herein. However, it will be understood by those of ordinary skill in the art that the exemplary embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the exemplary embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure. 
         [0012]    The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like. 
         [0013]      FIG. 1  illustrates a first exemplary embodiment of a BLUETOOTH transmitter  100 . The Bluetooth transmitter  100  is substantially cube-shaped and configured to be carried by a user. BLUETOOTH signals are broadcast when the transmitter is triggered. 
         [0014]      FIGS. 1, 2, and 3  illustrate that the Bluetooth transmitter  100  includes first housing  10 , a second housing  20 , a third housing  30 , a button  40 , a circuit board  50 , a battery  60 , and a holder  70 . 
         [0015]    Referring to  FIGS. 3 and 4 , the first housing  10  is substantially a board-like structure with a predetermined thickness. The first housing  10  includes a front side  12  and a back side  14 . The middle portion of the front side  12  recesses inwardly to form a concave surface  122 . The concave surface  122  can be made of elastic material. Preferably, the concave surface  122  can be manufactured with hollows. The back side  14  recesses inwardly to form a receiving space  142 . The back side  14  includes a plurality of protrusions  144  at the peripheral positions of the concave surface  122 . The first housing  10  further includes a first hanging hole  16  on a side. 
         [0016]    The second housing  20  is substantially a board with a predetermined thickness. The second housing  20  defines a hole  21  in the middle for receiving the battery  60 . The second housing  20  includes a first side  22  and a second side  24 . The first side  22  faces the back side  14  of the first housing  10 . The first side  22  includes a plurality of positioning pieces  222  at the peripheral positions of the hole  21 . The positioning pieces  222  are for cooperatively holding the circuit board  50 . Preferably, the first side  22  includes four positioning pieces  222  positioned at quarter positions around the hole  21 . The second side  24  defines at least one groove  242  at an upper end of the second side  24 . The second housing  20  further includes a second hanging hole  26  on a side. In at least one exemplary embodiment, the first housing  10  and the second housing  20  can be integrally formed or pasted together. The second hanging hole  26  is coupled to the first hanging hole  16  for cooperatively receiving a hanging piece (not shown), such as a hanging cord, for hanging the Bluetooth transmitter  100  around another object such as the neck of the user. 
         [0017]    The third housing  30  is substantially a hollow cube, and includes a bottom wall  32  and a peripheral wall  34 . The bottom wall  32  includes a first bottom surface  302  and a second bottom surface  304 . The first bottom surface  302  faces the second side  24  of the second housing  20 . The first bottom surface  302  includes at least one engaging piece  322  at at least one peripheral position of the first bottom surface  302  to enable coupling to the groove  242 , to couple the third housing  30  to the second housing  20 . The first bottom surface  302  includes a rib  324  protruding from a middle portion of the first bottom surface  302 , the rib  324  is for supporting the battery  60 . The peripheral wall  34  surrounds the bottom wall  32  and extends outwardly, thus the peripheral wall  34  and the bottom wall  32  cooperatively form a cavity  36  for receiving the holder  70 . The second bottom surface  304  includes a plurality of latches  38  extending outwardly, the latches  38  latch the holder  70  to the third housing  30 . The peripheral wall  34  defines an opening  342 . 
         [0018]    The button  40  is positioned on the concave surface  122  of the first housing  10 . The circuit board  50  is coupled to the plurality of positioning pieces  222 . The circuit board  50  includes a plurality of electronic elements for transmitting and receiving Bluetooth signals. The button  40  can be pressed by the user, so that the button  40  contacts with the electronic elements on the circuit board  50  through the elastic concave surface  122 , thus triggering Bluetooth signal transmission. The battery  60  is received in the hole  21  and electrically connected to the circuit board  50 . The battery  60  provides power to the Bluetooth transmitter  100 . 
         [0019]    The holder  70  is received in the cavity  36  and can hold the Bluetooth transmitter  100  to any part of the clothing of the user. The holder  70  includes a base  72  and a hook portion  74 . The base  72  is substantially cylindrical and is hold by the plurality of latches  38 , and thus the holder  70  is attached to the third housing  30 . The base  72  includes a connecting portion  722  protruding from the base  72 . When the base  72  is received in the cavity  36 , the connecting portion  722  is received in and is exposed from the opening  342 . In at least one exemplary embodiment, the base  72  includes a flexible pull-ring. The connecting portion  722  is configured to connect to a retractable cord. The retractable cord is configured to extend to different lengths and can be rolled in the base  72 , thus allowing coupling to an ID card or an entrance card. The hook portion  74  is a resilient piece of bent metal and attached to the base  72 . The hook portion  74  extends outwardly from the base  72  and bends back to form a hook. The hook portion  74  can hook to an external object, such as the clothing of the user. The Bluetooth transmitter  100  can be secured on the clothing of the user by a cooperative latch of the hook portion  74  and the base  72 . 
         [0020]    Referring to  FIG. 5 , in assembly, the circuit board  50  is among the plurality of positioning pieces  222 , and the button  40  is coupled to the concave surface  122 . The first housing  10  and the second housing  20  are formed integrally or pasted together. The plurality of protrusions  144  support multiple positions of the circuit board  50  and further secure the circuit board  50 . The battery  60  is received in the hole  21 , the engaging piece  322  is coupled to the groove  242 , thus the third housing  30  is coupled to the second housing  20 . The battery  60  is held between the circuit board  50  and the rib  324 . The base  72  is latched by the plurality of latches  38 , and thus the holder  70  is coupled to the third housing  30 . The connecting portion  722  is received in and exposed from the opening  342 . The hook portion  74  protrudes from the cavity  36  and latches to an external object cooperatively with the base  72 , thus the Bluetooth transmitter  100  can be secured to the an external object. Additionally, the first hanging hole  16  and the second hanging hole  26  can accommodate a hanging piece. 
         [0021]      FIGS. 6 and 7  illustrate a second exemplary embodiment of a Bluetooth transmitter  200 . The Bluetooth transmitter  200  includes a fourth housing  80  replacing the third housing  30  and the holder  70  of the first exemplary embodiment. Other elements are the same as those of the Bluetooth transmitter  100  of the first exemplary embodiment, and thus are omitted for clarity. The fourth housing  80  is substantially a thin board. The fourth housing  80  includes a hook piece  82  and a bearing portion  84  both protruding from a side of the fourth housing  80  and facing the second housing  20 . The hook piece  82  corresponds to the engaging piece  322  of the first exemplary embodiment, and thus enables coupling to the groove  242 , to couple the fourth housing  40  to the second housing  20 . The bearing portion  84  corresponds to the rib  324  of the first exemplary embodiment, and supports the battery  60 . The fourth housing  80  of the second exemplary embodiment is a thin board, which has a smaller thickness than the third housing  30  and the holder  70  of the first exemplary embodiment. 
         [0022]    The Bluetooth transmitter  100  includes the first hanging hole  16 , the second hanging hole  26 , the connecting portion  722 , and the hook portion  74 . Multiple ways of securing the Bluetooth transmitter  100  to external objects are disclosed, and this is more convenient for the user. The hook portion  74  also enables clipping to the clothing of the user, this is convenient and provides a better user experience. 
         [0023]    It is believed that the exemplary embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the scope of the disclosure or sacrificing all of its advantages. The examples herein described are mere illustrative exemplary embodiments of the disclosure.