1. Field of the Invention
The present invention relates generally to headsets for use in telecommunications and telephony. More specifically, conformable spring-loaded earloops for over-the-ear style headsets are disclosed.
2. Description of Related Art
Communication headsets are used in numerous applications and are particularly effective for telephone operators, radio operators, aircraft personnel, and for other individuals for whom it is desirable to have hands free operation of communication systems. Accordingly, a wide variety of conventional headsets are available.
One type of communication headset is a monaural headset. Monaural headsets are headsets that have only a single audio receiver for placement near one ear. Often, such headsets are implemented with an earloop that is configured to fit around the ear to secure the receiver in place. Such headsets may be very compact.
However, because of the large natural variations in the size, shape, and orientation of human ears, over-the-ear style headsets often do not fit properly for many potential users. For example, earloops often do not fit snugly and thus are not stable and earloops may not be comfortable for a large spectrum of potential users. In addition, the ergonomic goals of stability and comfort are often in conflict since a snug fit that provides a secure attachment for the headset often pinches the ear or creates pressure points that are uncomfortable for many users, particularly when the headset is worn for an extended period of time. In addition, a snug fit precludes the ability for the user to easily don and doff the headset with only one hand.
Some conventional earloops utilize hard, extendible pieces to lengthen the earloop behind the ear lobe. Others conventional earloops use small, pivotable flippers to close the gap behind the ear. However, these earloops typically have fixed contours with either no or limited predetermined ranges of motion and shape that only fit a fraction of the population of users. Consequently, they are not comfortable for many users and do not provide a secure fit.
Other conventional earloops employ molded, rubber-like material, either alone or reinforced with metal wire inserts. Unfortunately, the rubber earloops often stretch, allowing the earloop to slide or rotate about the ear. Moreover, wire reinforced designs often fatigue and break with continuous use, reducing the useful life of the headset. In addition, such earloops generally require two-hand fitting by the user and must be squeezed tightly and bent into shape in order to provide a sufficient level of clamping force. Removing the installed earloop usually results in distortion of its previous wearing shape and requires the user to reshape the earloop each time that it is worn.
Accordingly, what is needed is an earloop that provides a snug and secure fit for a wide variety of ear shapes, sizes, and orientations that is comfortable to be worn for extended periods of time and that can be easily donned and positioned on the ear with only one hand.
Conformable spring-loaded earloops for over-the-ear style headsets are disclosed. It should be appreciated that the present invention can be implemented in numerous ways, including as a process, an apparatus, a system, a device, a method, or a computer readable medium such as a computer readable storage medium or a computer network wherein program instructions are sent over optical or electronic communication lines. Several inventive embodiments of the present invention are described below.
The earloop for a headset generally comprises a prehensile member having a connecting member and a stabilizer portion and a ring integrally formed with and extending from the connecting member. The stabilizer portion is adapted to curve at least partially around and behind an ear to clip onto the ear in substantially a first plane. The ring is configured to removably receive and rotatably secure a receiver capsule of a headset therein and to direct the receiver capsule toward a concha of the ear. The ring is also configured to receive the receiver capsule of the headset in either of two opposing configurations so as to enable the user to wear the headset on either the left or the right ear. The prehensile member and the ring define an open-ended curved space to facilitate donning of the earloop. Upon application of an external force, the stabilizer portion is resiliently adjustable relative to the ring out of the first plane toward and away from the ear and/or in the first plane toward and away from the ring. The stabilizer portion returns to a static resting state configuration upon removal of external forces. The stabilizer portion has a larger cross-sectional dimension than the connecting member to facilitate the connecting member in functioning as a hinge for resiliently adjusting the stabilizer portion. The earloop further provides for adjusting the height between a center of the ring and the point along an interior surface of the stabilizer portion that rests upon the apex of the ear when worn. At least some of the inner portion of the stabilizer portion may be an elastomeric material.
Preferably, the ring provides protuberances, such as teeth and/or arcuate ridges, along its interior perimeter to correspond to and mate with a corresponding channel, optionally provided with corresponding teeth, defined in the receiver capsule. The earloop may further include an intertragal notch cover coupled to the ring and disposed to at least partially cover an intertragal notch of the ear. The intertragal notch cover is preferably resiliently movable out of the first plane toward and away from the intertragal notch of the ear.
These and other features and advantages of the present invention will be presented in more detail in the following detailed description and the accompanying figures which illustrate by way of example the principles of the invention.
The present invention will be readily understood by the following detailed description in conjunction with the accompanying drawings, wherein like reference numerals designate like structural elements, and in which:
Conformable spring-loaded earloops for over-the-ear style headsets are disclosed. The following description is presented to enable any person skilled in the art to make and use the invention. Descriptions of specific embodiments and applications are provided only as examples and various modifications will be readily apparent to those skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed herein. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
The earloop 20 is configured such that the snap ring 30 and the receiver capsule of the headset body are generally positioned at the entrance to the ear canal when the headset is worn by a user. In other words, the ring 30 is positioned such that when the headset is worn, the ring 30 is slightly rested in the concha of the ear so as to direct the receiver of the headset into the concha of the ear. The ring may be positioned under a concha wall to create a slight spring tension with the prehensile member to securely stabilize a headset. In one preferred embodiment, the outer diameter of the ring 30 may be approximately 21 mm and the inner diameter of the ring 30 may be approximately 17 mm. The receiver capsule is adapted to at least partially extend into the concha of the ear. The size of the ring 30 facilitates in positioning the receiver capsule of the headset body closer to the entrance to the ear canal. As is evident, positioning the receiver capsule closer to the entrance to the ear canal results in a louder sound to the user for a given signal output by the speaker of the headset receiver. In addition, the receiver capsule being closer to the entrance to the ear canal may also increase the stability of the headset when worn.
The prehensile member 22 may optionally provide an intertragal notch cover 34 extending from the snap ring 30 to provide added acoustic sealing for the receiver capsule and/or to provided additional stability to the earloop 20 when worn. When the earloop 20 is worn on the user's ear, the intertragal notch cover 34 is preferably configured and positioned to at least partially cover the intertragal notch, i.e., the notch separating the tragus from the antitragus of the ear.
As shown in
Alternatively or additionally, small teeth may be provided by the snap ring 30 an/or the channel of the receiver capsule to as to provide a ratchet mechanism to enable definite and/or fine adjustment between the headset body and the snap ring 30 as will be described below with reference to
The channel defined in the receiver capsule may also provide teeth similar to the ring teeth 38 along at least a portion of the perimeter of the channel. The teeth within the ring and the channel are preferably spaced and sized such that the two sets of teeth are offset from and in contact with each other when the headset body is secured to the earloop 20′. Thus, the two sets of teeth also provide positive tactile and/or audible feedback as the headset body is rotated relative to the ring 30′. In addition, the two sets of teeth cooperate to provide positive stops as the headset body is rotated relative to the snap ring 30′ and thereby facilitate in maintaining the orientation of the headset body relative to the snap ring 30′ and the earloop 20′ so as to enable the user to selectively position the headset body for optimal performance of the headset.
The prehensile member 22 is adapted to at least partially wrap around and behind the ear of the user in a plane substantially vertical to the plane of the ear, as illustrated in the perspective view of the earloop 20 as worn on the ear in
Referring again to
The curved space 32 preferably is configured and sized such that the earloop 20 exerts a positive tension (spring action) on the ear to facilitate clipping the earloop 20 around and behind the ear. In particular, when the earloop is in the static resting state, the snap ring 30 and the behind-the-ear portion 28 are generally lying in the same plane of the earloop. However, because the ear flexes the earloop 20 out of plane when the earloop 20 is worn, the snap ring 30 and the behind-the-ear portion 28 are no longer generally aligned within the same plane. Further, because the earloop 20 also provides a resilient bias between the snap ring 30 and the behind-the-ear portion 28, there is a positive spring action tension exerted by the earloop 20 on the ear that facilitates clipping the earloop 20 around and behind the ear and thus improves the stability of the headset when worn. Accordingly, the ability of the earloop 20 to flex out-of-plane allows the earloop to be worn comfortably and securely.
Although not necessary, the outer portion of the prehensile member 22 preferably generally follows the contour of the inner portion of the prehensile member 22. However, it is noted that the prehensile member 22 preferably has varying thickness along the connecting arm 24 and the behind-the-ear portion 28 and at least the behind-the-ear portion 28 tapers and rounds off both in thickness and in width to facilitate the user in donning the earloop 20 on the ear. The tapering also increases the size at the open end of the open-ended curved space 32 to further facilitate in the user in donning the earloop 20.
The earloop 20 is configured to be easily and intuitively donned and doffed. In particular, the earloop 20 provides various built-in adjustment features due to its shape, configuration, dimensions, and/or material of construction. These built-in adjustment features of the earloop 20 will now be described with reference to
The width and lateral adjustment features provide intuitive don/doff experience to users. For example, the earloop 20 is adjusted only as a result of the process by the user donning or taking off the earloop 20. In other words, the user need not purposely or consciously adjust the earloop in width or laterally when donning or taking off the earloop 20. Rather, the earloop 20 is “automatically” adjusted as the user dons or doffs the earloop 20 as a result of the interaction between the earloop 20 and the user's ear and side of the head as the earloop 20 is donned or doffed. Thus, as these adjustments are the natural result of the earloop 20 conforming to the contours of the ear when the user is putting on or taking off the earloop 20, the external forces applied to the earloop 20 are merely the natural result of the donning or doffing process.
It is noted that the earloop 20 generally returns to its static resting state after external forces are removed. Thus, once the earloop 20 is donned and is resting on the ear of the user, the earloop 20 generally returns to its static resting state. However, depending on the interaction between the earloop 20 and the user's ear and head when the earloop 20 is worn, the user's ear and/or the side of the user's head may prevent the earloop 20 from completely return to its static resting state. In other words, the user's ear and/or the side of the user's head may in effect be applying an external force on the earloop 20 even after the user is no longer actively handling, adjusting, and/or positioning the earloop 20.
The geometry and dimensioning of the earloop 20 contribute to enabling the width and lateral adjustment features. In particular, the connecting arm 24 preferably functions as the hinge for the width and/or lateral adjustment features. The hinge function may be provided at least in part by the connecting arm 24 having a thinner profile than the behind-the-ear stabilizer portion 28 of the prehensile member 22. In addition, the thickness of the prehensile member 22 is preferably continuous, i.e., smoothly transitions or morphs from the thinner connecting arm 24 to the thicker stabilizer portion 28 such that there is no sharp transition between the connecting arm 24 and the behind-the-ear portion 28. When worn, the stabilizer portion 28 is typically situated behind the ear adjacent to the side of the head of the user. Thus, the thicker stabilizer portion 28 also provides added stability to the ear loop when worn so as to further ensure that the earloop 20 is snugly and securely worn on the ear, thereby providing stability and comfort by a wide variety of users.
Referring again to
Similar to the width and lateral adjustments described above, the height adjustment is also intuitive and easily made by the user. After placing the earloop 20 onto the ear, the user would rotate the earloop 20 to an orientation that feels most comfortable to the user, i.e., make the height adjustment. By providing this height adjustment, the earloop 20 can be suitably used accommodate a greater number of ear sizes. However, it is noted that the range of height adjustment provided by the earloop 20 may be limited and may be smaller than the range in the corresponding dimension of the ear for potential users. Thus, more than one size of earloop may be provided and offered as options to potential users.
The height adjustment feature is provided by the inner curvature of the prehensile member 22 relative to the center of the snap ring 30. In other words, the distance between the center of the snap ring 30 and the inner surface of the prehensile member 22 varies along the length of the prehensile member 22. As shown, the prehensile member 22 is preferably configured such that its inner surface is not equidistant to the center of the snap ring 30 along the region where the prehensile member 22 may rest on the apex of the ear. Thus, the earloop 20 provides varying height depending upon the particular point on the inner surface of the prehensile member 22 that is positioned to rest upon the apex of the era.
The prehensile member 22 is preferably formed of a single body using any of a number of commercially available, high performance thermoplastics, such as ABS, propylene, Hytrel, Delrin, and/or nylon. It is noted that any other suitable material, preferably with similar properties, may be utilized. The thermoplastic material provides the earloop 20 rigidity and resilient bias for returning to its static resting shape after external applications of forces are removed. The snap ring 30 is preferably integrally formed of the same rigid thermoplastic with the remainder of the prehensile member 22. Although the prehensile member 22 is made of a relatively rigid material, it nonetheless has sufficient flexibility to allow for the width adjustment within the plane of the earloop and for the lateral adjustment out of the plane of the earloop as described above. The flexibility is also achieved by having a reduced cross-sectional area, i.e., thickness and/or width, such as by providing the connecting arm 24, functioning as the hinge for the adjustable features, with reduced thickness, as noted above.
Although a thermoplastic material may be utilized for the entire single-piece construction of the prehensile member 22, at least some of the inner portion of the prehensile member 22 is preferably formed of an elastomer such as Santoprene, Kraton, silicone, Hytrel, or any other suitable material. The optional intertragal notch cover 34 is preferably also formed of the elastomer. However, the intertragal notch cover 34 may alternatively be formed of the thermoplastic material and be integral with and extending from the thermoplastic material of the single piece construction of the prehensile member 22. The elastomer is typically soft, compressible, and/or extensible. As such, the elastomer on the inner portion of the prehensile member 22 provides added comfort and stability to the user as at least part of the inner portion of the prehensile member 22 as well as the intertragal notch cover 34 rest on and may exert pressure against the ear when the earloop 20 is worn. Thus, the softer elastomer for the inner portion of the prehensile member 22 and the intertragal notch cover 34 provides contact surface comfort. In addition, the elastomer may allow some conformity of the inner portion of the earloop 20 to the shape of the user's ear. Moreover, the elastomer typically has a higher coefficient of friction so that the elastomer further facilitates in snug and secure positioning of the earloop 20 on the ear.
In one embodiment, the single piece construction of the earloop 20 may be formed of a single material. Alternatively, the earloop 20 may be formed of multiple materials.
As noted above, the earloop 20, and in particular, the snap ring 30, is adapted to receive and secure the headset body thereto.
As shown in
It is noted that although a boomless headset body 72 is shown, any other suitable headset bodies may be utilized. For example,
As is evident, the earloop 20 enables the headset 70 to be easily and intuitively donned and taken off the ear. The user can easily rotate the headset body 72 relative to the earloop 20 and don the headset 70 with one hand. For example, the snap ring allows the receiver capsule 74 of the headset body 72 to rotate out of the way as necessary to provide a wider opening for easier donning of the headset 70. The earloop 20 is preferably provided as a one-piece design with a small profile and built-in “automatic” adjustment features. Its simple shape, “automatic” adjustable features, and lack of visible mechanisms for adjustments require little learning by the user and thus provide an easy, intuitive, and ergonomic user interface. Once worn, the headset 70 needs no further adjustments. Moreover, the design of the earloop 20 also provides a simpler design for manufacturing and is thus more cost effective.
In addition, the earloop 20 is comfortable yet snug, secure, and stable when worn. The earloop 20 allows the headset 70 to be clipped around and behind the ear and hung from the ear. The clipping and hanging of the earloop 20 as well as the positive tension (spring action) provided by the earloop 20 improve the stability of the headset when worn. In addition, as the headset is both hung and clipped onto the ear, the pressure from the weight of the headset is more evenly distributed around the ear. Thus, the earloop 20 not only provides an easy and intuitive user interface but also provides improved fit, stability, and comfort.
While the preferred embodiments of the present invention are described and illustrated herein, it will be appreciated that they are merely illustrative and that modifications can be made to these embodiments without departing from the spirit and scope of the invention. Thus, the invention is intended to be defined only in terms of the following claims.
Number | Name | Date | Kind |
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5260997 | Gattey et al. | Nov 1993 | A |
5450496 | Burris et al. | Sep 1995 | A |
5708724 | Burris et al. | Jan 1998 | A |
6449374 | Skulley et al. | Sep 2002 | B1 |