Abstract:
A wired headset ( 1 ) comprising an earphone ( 2 ) with an earphone housing ( 12 ) a speaker and a wearing device ( 33 ) for attaching the earphone housing ( 12 ) to the head of the user. The earphone ( 2 ) further comprising a wire ( 3 ) for connecting the earphone ( 2 ) to external equipment, the wire ( 3 ) extending from the earphone housing ( 12 ) in an essentially downwards direction at a wire position ( 13 ) at the lower end of the earphone housing ( 12 ) during use. The earphone housing ( 12 ) is essentially mirror symmetric about a first plane ( 32 ), which is orthogonal to the first side ( 9 ), and which extends through the wire position ( 13 ) and the centre ( 8 ) of the earphone housing ( 12 ). The wearing device ( 33 ) extends from the earphone housing ( 12 ) at an attachment position ( 14 ), which lies at the upper end of the earphone housing ( 12 ). The attachment position can be a first attachment position ( 14 A) for holding the earphone housing ( 12 ) at the left ear or a second attachment position ( 14 B) for holding the earphone ( 2 ) at the right ear, the positions ( 14 A,  14 B) being mirror symmetric about the first plane ( 32 ).

Description:
TECHNICAL FIELD 
       [0001]    The disclosure relates to a wired headset comprising an earphone with an earphone housing and a wearing device for attaching the earphone housing to the head of the user so that it is held at the entry of a users ear during use, wherein the earphone housing enclosing a speaker and having a first side facing the users ear during use and an opposite second side facing away from the users ear during use, wherein the earphone further comprising a wire for connecting the earphone to external equipment, the wire extending from the earphone housing in an essentially downwards direction at a wire position at the lower end of the earphone housing during use, and wherein the earphone housing is essentially mirror symmetric about a first plane, which is orthogonal to the first side, and which extends through the wire position and the centre of the earphone housing, and wherein the wearing device being attached to the earphone housing, so that it extends from the earphone housing at an attachment position, which lies at the upper end of the earphone housing. 
       BACKGROUND 
       [0002]    Wired headsets as defined above are typically used in offices, call centres and the like. The wire connects the headset with external equipment, such as a telephone, a computer or the like. The headset comprises at least one earphone and a wearing device for attaching the earphone to the head of the user, such that sound from the earphone speaker enters the ear canal. 
         [0003]    Headsets and earphones can be secured to a user&#39;s head by different wearing devices. As examples, these can comprise a headband, a neckband, an “earring” surrounding the outer ear or an ear hook. Sometimes ear loop, ear hanger, or ear brace are used instead of the term ear hook. An ear hook is a curved or essentially C-shaped device, which is attached to a headset device, such as a headset housing, an earphone or the like. In order to mount the headset on the ear, the ear hook is arranged around the auricle, such that it partly encircles the root of the auricle and extends in the so-called post auricular sulcus. The term “root of the auricle” refers to the area of the outer ear where it protrudes from the side of the head. Postauricular sulcus is the depression behind the ear next to the head. The “auricle” is the externally visible cartilaginous structure of the external ear. Synonyms for auricle are “pinna” or “outer ear”. 
         [0004]    It is often desirable for the user to choose whether the earphone shall be placed at the left or the right ear. 
         [0005]    U.S. Pat. No. 7,013,018 discloses a wired headset. The earring  2  of the headset is by means of a pivotal coupling link  6  connected to a holding ring  7 , which holds an earphone housing  8 . Due to the pivotal coupling link  6 , the headset can be adapted from left ear use to right ear use or vice versa by turning the holding ring  7  approximately 180° in relation to the earring  2 . When the headset is attached to the ear of a user, the earring  2  surrounds the outer ear and the coupling link  6  points forward. As the wire  10  leaves the earphone housing  8  directly opposite the coupling link  6 , the wire points backwards. This causes a torque as the gravity exerts a downward force on an increased lever arm, which unbalancing the headset. If the wire-receiving notch in the holding ring  7 —shown in FIG. 2 of U.S. Pat. No. 7,013,018—was located so that the wire was pointing downwards during use, this would only be the case when the headset is worn on the left or right ear. A turning through 180° of the holding ring  7  would cause the notch to point upwards. 
       SUMMARY 
       [0006]    The object of the disclosure is to improve the prior art so that it can be adapted to be worn on either ear without unbalancing the headset. The headset according to the disclosure is characterized in that the attachment position is selectable between a first attachment position for holding the earphone at the left ear and a second attachment position for holding the earphone at the right ear, and that the first and the second attachment positions are mirror symmetric located about the first plane. In this way the wearing device can be adapted to left and right ear while the wire extending from the earphone in a downwards direction in both situations. By “extending in a downwards direction during use” it is assumed, that the user holds the head in a natural position. The user will, off course, occasionally move the head to positions, where the wire will not extend in a “downwards direction”. 
         [0007]    According to a preferred embodiment, the wearing device comprises a holding member, which is detachably attached to the periphery of the earphone housing. 
         [0008]    The term “detachably” specifies that the holding member can be completely disassembled from the earphone housing or just be “disengaged” from the earphone housing without being disconnected from the earphone housing. In the latter case, the holding member can be disengaged from the earphone housing, moved in relation to the earphone housing and engaged again with the earphone housing. 
         [0009]    The earphone housing may comprise a third side, which connects the first side and the second side of the earphone housing, and the wire position may be located on the third side. 
         [0010]    According to a preferred embodiment, the holding member has an outline that corresponds to the outline of the headset housing and surrounds the earphone housing along the third side. 
         [0011]    The holding member may be frame-shaped and comprising a surrounding wall, which surrounds a holding member opening, and which surrounds the earphone housing along the third side. This solution is a simple and robust construction. 
         [0012]    Alternatively, the holding member is cup-shaped and comprising a surrounding wall, which surrounds the earphone housing along the third side, and which borders a bottom wall with sound openings. This embodiment has the advantage that the sound openings can be optimal adapted, whether the earphone is attached to the left or the right ear. 
         [0013]    According to an embodiment, the surrounding wall comprises a first wire-receiving notch for receiving the wire, when the attachment position is the first attachment position, and a second wire-receiving notch for receiving the wire, when the attachment position is the second attachment position. Such a solution makes it easier for the user to attach the holding member to the earphone housing in a correct position as the wire and receiving notches functions as guides. Furthermore, the notches may prevent the holding member and the earphone housing from being displaced during use. 
         [0014]    Preferably, the holding member comprises a marking for left ear use at the first wire-receiving notch and a marking for right ear use at the second wire-receiving notch. In this way, the user is not in doubt in which notch the wire should be placed, when he wants to wear the earphone on the left or right ear, respectively. 
         [0015]    According to a preferred embodiment, the holding member and the earphone housing have interengaging locking members, which lock the holding member to the earphone housing. Alternatively, the holding member and the earphone housing may be attached to each other by pure friction. 
         [0016]    The locking members may comprise protrusions and recesses in the earphone housing and holding member. 
         [0017]    The protrusions may be ridges and the recesses grooves. 
         [0018]    According to an embodiment, the earphone housing and the holding member are adapted, such that they can only be attached to each other, when the wearing device extends from the earphone housing in the first attachment position or the second attachment position. This prevents the user from attaching the holding member and the earphone housing to each other in an inappropriate way. 
         [0019]    Preferably, the holding member and the earphone housing have corresponding circular outlines. 
         [0020]    In this case, it is an advantage, if the earphone housing and the holding member are adapted, such that the locking members prevent them from rotating in relation to each other. 
         [0021]    The earphone housing and the holding member may be adapted such, that in order to change the attachment position from the first attachment position to the second attachment position or vice versa, the holding member is detached from the earphone housing, turned about an axis through the centre of the earphone housing and perpendicular to the first side of the earphone housing and attached to the earphone housing again. 
         [0022]    According to an alternative solution, the holding member and the earphone housing are adapted such, that in order to change the attachment position from the first attachment position to the second attachment position or vice versa, the holding member is detached from the earphone housing, turned 180° about an axis parallel with the first plane and the first side of the earphone housing and attached to the earphone housing again. 
         [0023]    The earphone housing and the holding member may have an outline shaped essentially as a circle, an oval triangle, a rectangle, a circle, an oval or a polygon with five or more sides. 
         [0024]    According to an embodiment, the wearing device comprises an ear hook or an earring. As these user engaging devices grips around a relatively large part of the outer ear, it is a particular advantage that the wearing device extends from the earphone housing in an upward and forward direction during use, such the hook or ring better can encircle the root of the outer ear. 
         [0025]    However, the wearing device could also comprise a neckband or a headband. 
         [0026]    According to an embodiment, the headset comprises a microphone. Thus, the headset can be used for two-way communication. 
         [0027]    Preferably, the headset comprises a microphone arm. A better sound picking up can be obtained, as this will take place closer to the user&#39;s mouth. 
         [0028]    Preferably, the microphone is arranged at the outer end of the microphone arm. 
         [0029]    The microphone arm may extend from the earphone housing and preferably from the second side of the earphone housing. 
         [0030]    In a preferred embodiment, the microphone arm is rotatably connected to the earphone housing, such that it can rotate about a rotational axis. In this way, the microphone arm may be directed to or away from the user&#39;s mouth, where the headset is mounted in the left or the right ear. 
         [0031]    Preferably, the rotational axis lies in the first plane. 
         [0032]    If the earphone housing is provided with a circular outline, the rotational axis may extend through the centre of the earphone housing. 
         [0033]    The microphone arm may be able to rotate at least 90°, preferably at least 120°, more preferably at least 180°, in order to direct it against the user&#39;s mouth during use. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0034]    The disclosure is explained in detail below with reference to the drawing illustrating a preferred embodiment of the disclosure and in which 
           [0035]      FIG. 1  is a perspective view of a first embodiment of headset according to the disclosure assembled for left ear use, 
           [0036]      FIG. 2  is a perspective view of the first embodiment where the headset is disassembled into an earphone and a wearing device, 
           [0037]      FIG. 3  a side view of the first embodiment, assembled for left ear use, 
           [0038]      FIG. 4  an end view of the first embodiment, assembled for left ear use, 
           [0039]      FIG. 5  the same as shown in  FIG. 2  seen from a different angle, 
           [0040]      FIG. 6  is a perspective view of the first embodiment assembled for right ear use, 
           [0041]      FIG. 7  is a perspective view of the first embodiment disassembled into the earphone and the wearing device, 
           [0042]      FIG. 8  the same as shown in  FIG. 7  seen from a different angle, 
           [0043]      FIG. 9  a schematically side view of a second embodiment of the disclosure assembled for left ear use, 
           [0044]      FIG. 10  the same as in  FIG. 9  seen from another side, 
           [0045]      FIG. 11-16  schematically side views of different steps in adapting the headset according to the second embodiment from left ear use to tight ear use, 
           [0046]      FIG. 17  a schematically side view of a third embodiment of a headset according to the disclosure, 
           [0047]      FIG. 18  a schematically side view of a wearing device of the third embodiment, and 
           [0048]      FIG. 19  a schematically side view of a fourth embodiment of a headset according to the disclosure, 
           [0049]      FIG. 20  a schematically side view of a fifth embodiment of a headset according to the disclosure, and 
           [0050]      FIG. 21  the holding member of an alternative embodiment. 
       
    
    
       [0051]    The following reference signs are used in the figures and the following detailed description of the preferred embodiment.
     1  headset     2  earphone     3  wire     4  microphone arm     5  holding member     6  coupling member     7  ear hook     8  centre of earphone     9  first side of speaker housing     10  second side of speaker housing     11  base of microphone arm     12  earphone housing     13  wire position     14 A first attachment position     14 B second attachment position     15  speaker     16  latching ridge     17  latching groove     18  first corner of triangular holding member     19  second corner of triangular holding member     20  third corner of triangular holding member     21  third side of earphone housing     22  first wire receiving notch     23  second wire receiving notch     24  frame of holding member     25  opening in frame     26  bottom wall of cup-shaped holding member     27  sound openings in earphone housing     28  left ear use marking     29  right ear use marking     30  microphone     31  rotational axis of microphone arm     32  first plane     33  wearing device     34  sound opening in bottom wall of cup-shaped holding member     35  strain relief bushing     36  vent notch     37  triangular holding member     38  triangular earphone housing     39  coupling pin     40  coupling pin     41  coupling hole     42  protrusion on holding member     43  circular edge of holding member     44  air openings in speaker housing     45  through coupling hole     46  coupling hole     47  first side of holding member     48  wire notch in second side of holding member     49  symmetry plane of holding member     50  holding member     51  second side of holding member   A 1  Rotational movement of microphone arm   A 2  detachment of ear hook from coupling member   A 3  attachment of ear hook to coupling member   A 4  rotational movement of holding member   
 
         [0108]    Some of the reference signs are used for corresponding parts in the different embodiments 
       DETAILED DESCRIPTION 
       [0109]      FIGS. 1 and 2  disclose a first embodiment of a headset  1  according to the disclosure. The headset  1  is a wired headset typically used in offices and call centres. The headset  1  is a mono headset with only one speaker and comprises an ear hook  7  to attach the headset around the outer ear of the user, and earphone  2  with a speaker, a microphone arm  4  and a wire  3  for connecting the headset  1  to an external device, such as a telephone, a computer with IP telephony or the like. 
         [0110]    As shown in  FIG. 2 , the headset can be disassembled into the earphone  2  and a wearing device  33 . The earphone  2  comprises an earphone housing  12 , the wire  3  and the microphone arm  4 . The earphone housing  12  comprises a first circular side  9  facing the user&#39;s ear during use and an opposite second circular side  10  ( FIG. 1 ) facing away from the user&#39;s ear during use. A third circumferential side  21  connects the first side  9  and the second side  10 . Sound openings  27  in the first side  9  lead sound from a speaker  15  in the earphone housing  12  to the user&#39;s ear. The microphone arm  4  extends from the second side  10  of the earphone housing  12 . A microphone  30  is arranged at the distal end of the microphone arm  4  in order to pick up sounds from the users mouth. The wearing device  33  comprises the ear hook  7 , a coupling member  6  and a holding member  5 . The holding member  5  is circular and cup-shaped and comprises a bottom wall  26  with a sound opening  34 . It is adapted to receive the first side  9  and the third side  21  of speaker housing  12 . The holding member  5  and the earphone housing  12  can be locked together in different positions, which will be explained later. The ear hook  7  is attached to the holding device by means of the coupling member  6 , which—in assembled state—extends in a direction away from the earphone housing  12  at a first attachment position  14 A. 
         [0111]    The headset can be adapted to be attached to the left or the right ear of the user. In  FIG. 1 , the headset is adapted to be attached to the left ear of the user. In order to secure the ear hook  7  properly around the root of the outer ear, the coupling member  6  should point forward (against the users face) and upward, so that the ear hook  7  can grip behind the outer ear and rest on the top of the root of the outer ear. 
         [0112]    Irrespective of the headset  1  being worn on the left or the right ear, it is desirable that the wire extends essentially downwards in order not to un-balance the headset during use.  FIG. 3  discloses the headset from the side. The wire position  13 , at which the wire  3  extends from the earphone housing  12 , lies in a vertical plane  32 , which also comprises the centre  8  of the earphone housing  12 . As the wire position  13  lies in this plane  32  and extends vertical downwards during use, it exerts a uniform force from its own weight and tension on the headset  1 . 
         [0113]    At its base  11 , the microphone arm  4  is rotatable mounted on the outer second side  10  of the earphone housing  12 , so that it can rotate about a rotational axis  31  (see  FIG. 4 ), which is essentially perpendicular to the second side  10  and goes through the centre  8  of the earphone housing  12 . 
         [0114]      FIG. 4  discloses the headset from behind. The ear hook is made of flexible material and is therefore able to flex away from the earphone  2 , when it is arranged around the root of the outer ear. The holding member  5  comprises a protrusion  42  that encircles the sound opening  34  and enters the concha of the ear. This provides a better guidance of the sound from the speaker to the user&#39;s ear canal. 
         [0115]      FIGS. 5 and 6  disclose the headset  1  in disassembled condition wherein the inner side of the cup-shaped holding member  5  is visible. Along its circular edge  43 , the holding member  5  has a number of vent notches  36 , which serve to connect air openings  44  (see  FIGS. 2 and 4 ) in the speaker housing  12  to the surroundings. These air openings  44  are correspondingly arranged along the third side  21  of the speaker housing  12  and serve to provide air channels to the backside of the membrane of the speaker  15 . 
         [0116]    The circular edge  43  also has two wire-receiving notches  22 ,  23 , which are shaped as the vent notches. As shown in  FIG. 5 , the wire-receiving notch  22  has a “L”-marking  28  and must be selected when the headset  1  is worn on the left ear. Thus, if the earphone  2  and the wearing device  33  are assembled in the mutual rotational position shown in  FIG. 5 , the strain relief bushing  35  of the wire  3  will be received in the notch  22 , which means that the headset  1  will be adapted for left ear use. If the user wants to wear the headset on the right ear, he disassembles the earphone  2  and the wearing device  33 , rotates them in relation to each other to the mutual rotational position shown in  FIGS. 7 and 8  and assembles them again. Latching ridges  16  on the inner side of the holding member  5  and corresponding latching grooves  17  (see  FIG. 7 ) on the third side  21  of the earphone housing  12  ensures, that the holding member  5  and the earphone housing  12  only can be assembled correctly in the two shown positions. Furthermore, the latching ridges  16  and the latching grooves  17  are adapted as latching members, which lock the parts  12 ,  5  together. 
         [0117]    In  FIG. 6 , the headset is assembled for right ear use. Here, the coupling member  6  extends in a direction away from the earphone housing  12  at a second attachment position  14 B. 
         [0118]    In  FIGS. 7 and 8 , the earphone housing  12  and the wearing device  33  are disassembled but in mutual rotational position for right ear use. 
         [0119]    The ear hook  7  is attached to the coupling member  6 , which protrudes radially from the outer side of the holding member  5 . 
         [0120]    The proximal end of the ear hook comprises a not shown coupling pin, which frictionally engages a not shown through-going coupling hole in the coupling member  6 . The pin and hole have non-circular cross-sections, so that they cannot rotate in relation to each other. When the earphone housing  12  and the holding member  5  are disassembled and mutual rotated in order to adapt the headset form left ear use to right ear use or vice versa, the user must also pull the coupling pin out of the ear hook  7  out of the coupling hole and insert it again from the opposite side. This is shown in more detail in  FIGS. 12 and 13 . 
         [0121]    When the headset is changed from left ear use to right ear use or vice versa, the microphone arm  4  must be rotated about the axis  31  in order to point in the direction of the user&#39;s mouth during use. 
         [0122]      FIGS. 9-16  disclose a second embodiment, which essentially differs from the first embodiment by the earphone housing  38  and the holding member  37  having corresponding triangular outlines.  FIG. 9  discloses the headset from the “ear side” and adapted for left ear use.  FIG. 10  discloses the headset  1  from the outer side. The holding member  37  is frame shaped, which means it does not have a bottom wall but a large through going frame opening  25 . The triangular holding member  37  has a first corner  18 , a second corner  19  and a third corner  20 . 
         [0123]    If the user wants to change the headset  1  from left ear use to right ear use, he follows the steps explained below. 
         [0124]    a) He disassembles it into the earphone  2  and wearing device  33  as explained earlier by pulling the earphone  2  and the wearing device  33  away from each other in the direction perpendicular to the first side  9  of the earphone housing  38 .  FIG. 11  discloses the earphone  2  alone. 
         [0125]    b) The microphone arm  4  is rotated in the direction of the arrow A 1  from the position shown with dotted line to the position shown with solid line in  FIG. 11 . 
         [0126]    c) The ear hook  7  is detached from the coupling member  6  by pulling a coupling pin  39  in the direction of the arrow A 2  out of a through-going hole  45  in the coupling member  6 , see  FIG. 12 . 
         [0127]    d) The holding member  37  is rotated 120° in the direction of the arrow A 4 , see  FIG. 13 . 
         [0128]    e) The ear hook  7  is attached to the coupling member  6  by pushing the coupling pin  39  in the direction of arrow A 3  into the through-going coupling hole  39  in the coupling member  6 , see  FIG. 13 . 
         [0129]    f) The earphone  2  and the wearing device  33  are assembled by pushing them together in a direction perpendicular to the plane of the paper. Hereby, the strain relief bushing  35  of the wire  33  engages the wire notch  23 . Simultaneously, not shown locking members lock the holding member  37  and the earphone housing  38  together.  FIG. 16  shows the headset  1  ready for right ear use. 
         [0130]      FIG. 15  discloses the holding device  37  seen from below, and the outline of the wire-receiving notch  23  is shown. 
         [0131]      FIG. 17  discloses a third embodiment. This embodiment has an earphone housing  12  with a hexagonal outline and differs further from the first and the second embodiments by not having a holding member. Instead, the third side  21  of the earphone housing  12  is provided with two radially coupling holes  41 ,  46 , which can receive a coupling pin  40  on the coupling member  6 . Thus, the coupling hole  41  to the left in  FIG. 17  is used, when the headset  1  is adapted for left ear use, and the coupling hole  46  to the right in  FIG. 17  is used, when the headset  1  is adapted for right ear use. 
         [0132]      FIG. 18  discloses the wearing device  47  of the third embodiment, and the coupling pin  40  of the wearing device is clearly shown. The coupling pin  40  is locked in the coupling holes  41 ,  46  by pure friction, but could alternatively be provided with some kind of spring-loaded latching means. 
         [0133]      FIG. 19  discloses a fourth embodiment, which differs from the third embodiment by having an earphone housing  12  with an oval outline. 
         [0134]      FIG. 20  discloses a fifth embodiment, which has an earphone housing  12  with a rounded square outline and a correspondingly shaped holding member  5 . 
         [0135]    In all the shown embodiments, the holding device is rotated about an axis  31  through the centre  8  of the earphone housing  12  and perpendicular to the first side  9  of the earphone housing ( 12 ;  38 ).  FIG. 21  discloses an alternative variant, wherein the holding member  50  is turned 180° about an axis parallel with the first plane  32  (see  FIG. 3 ) and the first side  9  of the earphone housing  12 ,  37  and attached to the earphone housing  12 ,  37  again in order to switch from left ear use to right ear use. In this case, the first wire notch  22  is centrally arranged in first side  47  of the holding member  50  and the second notch  46  is centrally arranged in the second side  51  of the holding member  50 . The holding member  50  is able to receive the earphone housing from both the first side  47  and the second side  51  and can therefore not be cup-shaped as the first embodiment. The variant shown in  FIG. 21  can be applied to the second and the fifth embodiments, which comprise holding members. 
         [0136]    All the embodiments shown here are provided with an ear hook. However, the ear hook could be replaced by an earring or a neckband. 
         [0137]    In the second embodiment, the coupling member  6  and the wire receiving notches  22 ,  23 ,  46  are arranged centrally on the sides of the triangle. However, they could also be positioned in the corners. This applies to the third and fifth embodiment also. 
         [0138]    In all the embodiments the wearing device extends from the earphone housing by means of the coupling member  6 , whereby the attachment position  14 A,  14 B of the earphone housing  12 ,  37  is defined by the position of this coupling member  6 . However, a separate coupling member  6  is not necessary. As an example, the ear hook could be directly connected to or integrally formed with the holding member, or directly inserted into a coupling hole in the earphone housing. The essence is that the attachment position is a position, where the wearing device extends away from the outline or periphery of the earphone housing. 
         [0139]    In the shown embodiments, there is only on “pair” of attachment positions  14 A,  14 B. This is preferred, as it makes it easy for the user to assemble the headset. There is only one attachment position  14 A for left ear use and one attachment position  14 B for right ear use. However, the headset could be provided with two or more “pairs”, which would enhance the adjustability for the individual at the prize of user friendliness. Thus, the holding member  5  and the earphone housing  12  could be adapted to be assembled in four, six or even eight positions, i.e. two, three or four different positions for each ear. In addition, the embodiments without at holding member could be provided with an even number of attachment positions.