Earcup mounting assembly

Abstract

An earcup mounting assembly includes a base attachable to a helmet shell. The base includes a first member. A support arm that includes a second member is coupled to and rotatable relative to the base about a center line. A biasing element is coupled to the base and support arm. The base applies a biasing force to the base and support arm along a line of action. The base, support arm and biasing element form an over-center mechanism and the support arm is rotatable between a closed position and an open position. The first member of the base and the second member of the support arm engage one another when the support arm is at an intermediate position such that the support arm is retained in the intermediate position.

Description

Docket No. 069758-02-5182-WOTITLE

[0001] Earcup Mounting AssemblyCROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Patent Application No.63 / 747,124 filed January 20, 2025 entitled “Earcup Mounting Assembly”, which is incorporated by reference herein in its entirety.TECHNICAL FIELD

[0003] The present disclosure generally relates to an earcup mounting assembly and, in some embodiments, to an earcup mounting assembly configured for use with helmet shells.SUMMARY

[0004] In one embodiment there is an earcup mounting assembly including a base configured to be coupled to a helmet shell and including a first member, a support arm including a second member, the support arm coupled to and rotatable relative to the base about a center line, and a biasing element coupled to the base and support arm and applying a biasing force to the base and support arm along a line of action therebetween, the base, support arm and biasing element form an over-center mechanism and the support arm is rotatable between a closed position in which the line of action is on a first side of the center line and an open position in which the line of action is on a second side of the center line opposite the first side, and the first member of the base and the second member of the support arm engage one another when the support arm is at an intermediate position between the open position and closed position such that the support arm is releasably retained in the intermediate position.

[0005] In some embodiments, the second member is a c-clip including a detent and the first member is a pin fixedly coupled to the base and protruding outwardly therefrom. In some embodiments, the pin extends through the base and protrudes outwardly therefrom at opposed side surfaces of the base. In some embodiments, the c-clip is a first c-clip and the earcup mounting assembly further comprises a second c-clip coupled to the support arm opposite the first c-clip and rotatable with the support arm about the first axis, and the first and second c-clips are engaged with the pin where the pin protrudes outwardly from the side surfaces of the base.

[0006] In some embodiments, the second member is a cammed surface and the first member is a follower surface. In some embodiments, the support arm is translatable relative to the center line in alinear direction and rotatable about the center line, and rotation of the support arm about the center line while the cammed surface and follower surface are interfaced causes the support arm to translate relative to the center line in the linear direction. In some embodiments, the base includes a hinge pin defining the center line and the support arm includes a slot through which the hinge pin extends rotatably coupling the support arm to the base. In some embodiments, the support arm is translatable from the open position to a stowage position, and translation from the open position to the stowage position includes rotating the base and support arm together about a rotational axis that is perpendicular to the center line. In some embodiments the earcup mounting assembly further includes a connector coupled to the base and configured to be coupled to a mounting rail connected to the helmet shell, and the base is rotatable relative to the connector about the rotational axis.

[0007] In another embodiment there is an earcup mounting assembly including a base including a hinge pin disposed along a center line, and a support arm including a slot engaged with the hinge pin such that the support arm is rotatable relative to the base about the center line between an open position and a closed position and slidable relative to the center line in a linear direction, the support arm includes a cammed surface and the base includes a corresponding follower surface that engages the cammed surface to releasably retain the support arm in an intermediary position relative to the base between the open position and closed position, and engagement of the cammed surface and follower surface during rotation of the support arm about the center line from the intermediate position towards at least one of the open position and closed position causes the slot of the support arm to slide along the hinge pin relative to the center line in the linear direction.

[0008] In some embodiments, the earcup mounting assembly further includes a biasing element coupled to the base and support arm and forming an over-center mechanism therewith, the biasing element applying a biasing force to the base and support arm along a line of action therebetween, and when the support arm is in the closed position the line of action is on a first side of the center line and when the support arm is in the open position the line of action is on a second side of the center line opposite the first side. In some embodiments, the earcup mounting assembly further includes a connector coupled to the base and configured to couple the earcup mounting assembly to a mounting rail of a helmet shell, the base and support arm are rotatable relative to the connector about a rotational axis that is perpendicular to the center line.

[0009] In some embodiments, the earcup mounting assembly further includes an earcup mount configured to couple an earcup to the earcup mounting assembly, the earcup mount coupled to the support arm opposite the base. In some embodiments, the cammed surface is fixed to a body of the support arm such that the cammed surface rotates about the center line and translates relative to thecenter line with the support arm. In some embodiments, the cammed surface is integrally formed with the body of the support arm. In some embodiments, the follower surface is integrally formed with a body of the base. In some embodiments, the cammed surface is a curved surface including at least one peak and one valley.BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The foregoing summary, as well as the following detailed description of embodiments of the earcup mounting assembly, will be better understood when read in conjunction with the appended drawings of exemplary embodiments. It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown.

[0011] In the drawings:

[0012] Fig. 1 is a perspective view of the earcup mounting assembly of in accordance with an exemplary embodiment of the present disclosure in use with a helmet;

[0013] Fig. 2 is a perspective view of the earcup mounting assembly of Fig. 1;

[0014] Fig. 3 is a perspective view of a portion of the earcup mounting assembly of Fig. 1;

[0015] Fig. 4 is a perspective view of a retaining member of the earcup mounting assembly of Fig. 1;

[0016] Fig. 5 is a side cross-sectional view of a portion of the earcup mounting assembly of Fig.1;

[0017] Fig. 6 is a perspective view of the earcup mounting assembly of Fig. 1 with an arm covering removed;

[0018] Fig. 7 is a bottom perspective view of the earcup mounting assembly of Fig. 1;

[0019] Fig. 8 is a side elevational view of the earcup mounting assembly of Fig. 1 while the support arm is in a closed position;

[0020] Fig. 9 is a side elevational view of the earcup mounting assembly of Fig. 1 while the support arm is in an open position;

[0021] Fig. 10 is a side elevational view of the earcup mounting assembly of Fig. 1 while the support arm is in an intermediate position;

[0022] Fig. 11 is a perspective view of the earcup mounting assembly of Fig. 1 in use with a helmet while the support arm is in a closed position;

[0023] Fig. 12 is a perspective view of the earcup mounting assembly of Fig. 1 in use with a helmet while the support arm is in an intermediate position;

[0024] Fig. 13 is a perspective view of the earcup mounting assembly of Fig. 1 in use with a helmet while the support arm is in an open position;

[0025] Fig. 14 is a perspective view of the earcup mounting assembly of Fig. 1 in use with a helmet while the support arm is in a stowage position;

[0026] Fig. 15 is a perspective view of an earcup mounting assembly in accordance with another exemplary embodiment of the present disclosure;

[0027] Fig. 16 is a perspective view of the earcup mounting assembly of Fig. 15 with a portion of the support arm omitted;

[0028] Fig. 17 is a partial exploded view of the base and support arm of the earcup mounting assembly ofFig. 15;

[0029] Fig. 18 is another partial exploded view of the base and support arm of the earcup mounting assembly ofFig. 15;

[0030] Fig. 19 is a cross-sectional view of a portion of the base and support arm of the earcup mounting assembly ofFig. 15;

[0031] Figs. 20-21 illustrate linear translation of the support arm relative to the base of the earcup mounting assembly ofFig. 15;

[0032] Fig. 22 is a side elevational view of the earcup mounting assembly ofFig. 15 in a closed position;

[0033] Fig. 23 is a cross-sectional view of the earcup mounting assembly ofFig. 22;

[0034] Fig. 24 is a side elevational view of the earcup mounting assembly ofFig. 15 in an open position;

[0035] Fig. 25 is a cross-sectional view of the earcup mounting assembly ofFig. 24;

[0036] Fig. 26 is a side elevational view of the earcup mounting assembly ofFig. 15 in an intermediate position; and

[0037] Fig. 27 is a cross-sectional view of the earcup mounting assembly ofFig. 26.DETAILED DESCRIPTION

[0038] Helmets for head protection are worn in a variety of environments and for various purposes. Ear accessories (e.g., communications devices) are often used in conjunction with helmet systems. Ear accessories configured to provide protection and / or communication capabilities are of particular importance for defense forces, emergency responders, and industrial personnel operating in high-performance environments. Conventionally, ear accessories (e.g., earphones) have been builtinto the helmets or worn separately beneath the helmets. However, the earphones add weight, do not function in dismounted operations, and are not easily removed from the helmet.

[0039] Referring to the drawings in detail, wherein like reference numerals indicate like elements throughout, there is shown in Figs. 1-14 an earcup mounting assembly, generally designated 100, in accordance with an exemplary embodiment of the present disclosure. In some embodiments, the earcup mounting assembly 100 is configured to be coupled to a helmet shell. In some embodiments, the earcup mounting assembly 100 is configured to retain an earcup proximate a wearer’s ear and spaced therefrom to permit airflow and ambient noise to reach the wearer’s ear.

[0040] The earcup mounting assembly 100 may be configured for use with a helmet. The earcup mounting assembly 100 may be configured for use with helmets configured for use in a variety of environments and for various purposes, including, but not limited to, adventure activities, sporting, industrial safety, and police or military purposes. In some embodiments, the earcup mounting assembly 100 is configured for use with any type of head protection helmet shell known in the art. For example, the helmet shell may be included in a standard infantry ballistic helmet, an advanced combat helmet (ACH), an enhanced combat helmet (ECH), a modular integrated communications helmet (MICH), a tactical ballistic helmet (TBH), a lightweight marine helmet, a police general-duty helmet, a personnel armor system for ground troops (PASGT), or an aircrew helmet, such as a fixed-wing aircrew helmet, a rotary-wing aircrew helmet, an HGU-56 / P rotary-wing helmet or an HGU-55 / P fixed-wing helmet.

[0041] Referring to Figs. 1-2, the earcup mounting assembly 100 may include a base 102, an earcup mount 104, and a support arm 106 coupling the earcup mount 104 to the base 102. The base 102 may be configured to couple the earcup mounting assembly 100 to a helmet shell. For example, the base 102 may couple to a mounting rail 12 extending along a side surface of a helmet shell 10 (e.g., as shown in Fig. 1). As further illustrated in Fig. 1, an earcup 14 (e.g., a communications earcup) is mounted to the earcup mount 104. In Fig. 1, the earcup 14 is illustrated as being proximate the ear of user 16 without the earcup 14 directly contacting the user 16. In such instances, the earcup mounting assembly 100 may be considered to be in a venting configuration (e.g., an intermediate position), which is discussed in more detail below. In some embodiments, the earcup mounting assembly 100 is configured to retain the earcup 14 in a position relative to the ear of the user 16, substantially similar to what is shown in Fig. 1 while in the venting configuration. In some embodiments, the base 102 includes a first member 108, and the support arm 106 includes a second member 114 configured to engage one another and retain the support arm 106 in one or more positions relative to the base 102, as described in more detail below.

[0042] In some embodiments, the support arm 106 is rotatable relative to the base 102 about a center line C. The support arm 106 may be coupled to the base 102 via one or more hinge pins 110. The one or more hinge pins 110 may be fixedly coupled to the base 102. In some embodiments, the support arm 106 is rotatably coupled to the base 102 via one or more hinge pins 110. The hinge pins 110 may define the center line C. The support arm 106 may be rotatably coupled to the hinge pins 110 and rotatable about the center line C. In some embodiments, there are two hinge pins 110 coupled to the base 102 at opposite ends thereof. In some embodiments, the hinge pins 110 are comprised of a metal material. For example, the hinge pins 110 may be comprised of aluminum.

[0043] Referring to Figs. 2-3, the second member 114 may be configured to retain the support arm 106 in one or more orientations relative to the base 102. The second member 114 may be coupled to the support arm 106 and may be rotatable with the support arm 106 about the center line C. For example, the second member 114 is fixed in position relative to the support arm 106 such that rotation of the support arm 106 about the center line C causes the second member 114 to rotate with the support arm 106 about the center line C. In some embodiments, the second member 114 includes at least one detent 112a, 112b engaged with a first member 108 that is coupled to the base 102. In some embodiments, the earcup mounting assembly 100 includes two second members 114 coupled to the support arm 106 at opposite sides thereof. For example, and as illustrated in Figs. 2 and 3, there are two second members 114 coupled to the support arm 106 at the left- and right-side surfaces thereof.

[0044] In some embodiments, the two second members 114 are substantially the same as one another. For example, the second members 114 may have the same size and shape and be composed of the same material. In some embodiments, the second members 114 are comprised of a metal material. The second members 114 may be comprised of an aluminum material. In some embodiments, the second members 114 include two detents 112a, 112b protruding outwardly therefrom and defining a notch 113 therebetween. In some embodiments, the second member 114 is positioned relative to the base 102 such that the detents 112a, 112b are engageable with the first member 108. For example, the detents 112a, 112b may abut against the first member 108 at one or more points along the rotational path of the arm 106 and second member 114. In some embodiments, the detents 112a, 112b act as a catch against the first member 108 to hold the support arm 106 at one or more desired orientations relative to the base 102. For example, when the first member 108 is engaged with the notch 113 between the two detents 112a, 112b, the support arm 106 may be retained in a desired orientation relative to the base 102. The second members 114 may be generally compressible such that a user may rotate the support arm 106 about center line C relativeto the base 102; the detents 112a, 112b may bend or flex as they contact the first member 108. In some embodiments, the detents 112a, 112b provide tactile feedback to a user as the user rotates the support arm 106 into a position in which the detents 112a, 112b abut against the first member 108.

[0045] Referring to Figs. 4-5, the second member 114 may be a c-clip including the detents 112a, 112b. The second member 114 may be curved such that it includes an opening 118 at one end, at least two detents 112a, 112b and two flared ends 120a, 120b at the opening 118. The flared ends 120a, 120b may be configured to couple the second member 114 to the support arm 106. For example, the flared end 120a may be received within a first slot 122a defined by the support arm 106, and the flared end 120b may be received within a second slot 122b defined by the support arm 106. In some embodiments, the flared end 120b includes an aperture 124 configured to receive a fastener. For example, a fastener 126 that couples the upper covering 128a and lower covering 128b of the support arm 106 together may extend through the aperture 124 in the second member 114. In some embodiments, the upper and / or lower coverings 128a, 128b may form the body of the support arm 106. In some embodiments, the second member 114 is integrally formed with the support arm 106. For example, the second member 114 may be formed from the upper and / or lower coverings 128a, 128b. In some embodiments, each of the second members 114 are c-clips as illustrated in, for example, Fig. 4.

[0046] Referring to Fig. 6, the first member 108 may be fixedly coupled to the base 102 and protrude outwardly therefrom. The first member 108 may extend entirely through the base 102 and protrude outwardly from opposed side surfaces thereof. For example, and as illustrated in Fig. 6, the first member 108 protrudes outwardly from the left-side surface 130 and right-side surface 132 of the base 102. The second members 114 may engage with the first member 108 where it protrudes outwardly from the side surfaces 130, 132 of the base 102. For example, and as illustrated in Fig. 6, the two second members 114 are positioned at the exterior of the left- and right-side surfaces 130, 132 of the base 102 and engage the first member 108 along a portion thereof that protrudes outwardly from the side surfaces 130, 132, respectively. In some embodiments, the first member 108 is a pin that is fixedly coupled to the base 102. In some embodiments, the first member 108 is a unitary construct that extends entirely through the side surfaces 130, 132 of the base 102 and protrudes outwardly therefrom at both sides. For example, the first member 108 is a single pin sized to extend through the base 102 between the side surfaces 130, 132 and protrude outwardly therefrom. In other embodiments, the first member 108 is two fixed members (e.g., two pins) each fixedly coupled to the base 102 at opposite sides 130, 132, respectively, and protruding outwardly therefrom.

[0047] In some embodiments, the earcup mounting assembly 100 includes at least one biasing element 134 biasing the support arm 106 toward the base 102. The biasing element 134 may be coupled to the support arm 106 and to the base 102. Tn some embodiments, one end of the biasing element 134 is fixedly coupled to the support arm 106, and an opposite end thereof is fixedly coupled to the base 102. For example, the biasing element 134 is coupled to the first member 108 that extends through the base 102 and to a fixed member 136 that is fixedly coupled to the support arm 106. As illustrated in Fig. 6, the biasing element 134 may be connected at one end to the first member 108 of the base 102 and at an opposite end to the fixed member 136 of the support arm 106. In some embodiments, the fixed member 136 is fixedly coupled to the support arm 106 such that it rotates about the center line C with the support arm 106. The fixed member 136 may be similar to the first member 108 except that it may not protrude outwardly from side surfaces of the arm 106. The fixed member 136 may be a pin that is fixed in position relative to the arm 106. In some embodiments, there are two biasing elements 134 coupled to the support arm 106 and base 102.

[0048] In some embodiments, the biasing element 134 is coupled to the base 102 and support arm 106 and applies a biasing force to the base 102 and support arm 106 along a line of action LA therebetween. In some embodiments, the line of action LA for the biasing element 134 is defined at least in part by fixed points relative to both the base 102 and support arm 106. For example, the first member 108 of the base 102 extends along a first axis Al parallel to the center line C, and the fixed member 136 of the support arm 106 extends along a second axis A2 that is parallel to the center line C. Further to this example, the line of action LA defined by the biasing element 134 may generally be an imaginary line that intersects both axes Al and A2 at respective points. In some embodiments, the line of action LA is generally perpendicular to the center line C.

[0049] In some embodiments, each of the biasing elements 134 defines respective lines of action LA, which may be generally parallel to one another. For example, and as illustrated in Fig. 6, each of the two biasing elements 134 defines a respective line of action LA, each intersecting the axes Al and A2 and oriented generally perpendicular to the center line C. For the sake of brevity, the earcup mounting assembly 100 of the present disclosure will be described herein primarily in reference to a single line of action LA; however, it should be understood that multiple biasing elements 134 may define respective lines of action along which a biasing force is generated between the support arm 106 and base 102.

[0050] In some embodiments, the base 102, support arm 106 and biasing element 134 form an over-center mechanism configured to retain the support arm 106 in two or more positions relative to the base 102. In some embodiments, the positions of the support arm 106, as discussed in moredetail below, are defined by the position of the line of action LA relative to the center line C. For example, the support arm 106 is rotatable between at least a closed position in which the line of action LA is on a first side of the center line C (e.g., below the center line C) and an open position in which the line of action LA is on a second side of the center line C opposite the first side (e.g., above the center line C). In some embodiments, transitioning the support arm 106 between the open and closed positions causes the line of action LA to pass through the center line C.

[0051] Referring to Figs. 1-2 and 7, the earcup mounting assembly 100 may include a connector 138 coupled to the base 102 and configured to couple the base 102 to a mounting rail. For example, the connector 138 may couple the base 102 to the mounting rail 12 illustrated in Fig. 1. The connector 138 may be configured to be received within a recessed groove extending along the mounting rail 12. For example, the connector 138 includes a dovetail pinon 140 configured to be received within a dovetail shaped groove of the mounting rail 12. In some embodiments, the base 102 is rotatably coupled to the connector 138. For example, the base 102 is rotatable relative to the connector 138 about a rotational axis R. The rotational axis R may be generally perpendicular to the center line C.

[0052] In some embodiments, the base 102 being rotatable relative to the connector 138 about rotational axis R may enable the base 102, arm 106 and earcup mount 104 to rotate with one another about the rotational axis R while the earcup mounting assembly 100 is connected to a mounting rail (e.g., rail 12) of a helmet. For example, the arm 106 and earcup mount 104 may be coupled to the base 102 such that rotation of the base 102 about the rotational axis R causes the arm 106 and earcup mount 104 to rotate about rotational axis R. Accordingly, a user may adjust the position of the earcup mount 104 and an earcup 14 coupled thereto relative to the helmet shell 10 about the rotational axis R when worn. This may be particularly beneficial in instances where the user wishes to move the earcup 14 from a closed position to a stowage position, as discussed in more detail below.

[0053] Referring to Figs. 2 and 8-10, the support arm 106 may be rotatable relative to the base 102 between a plurality of different positions. The support arm 106 may be rotatable relative to the base 102 about the center line C between at least two different positions. In some embodiments, the positions of the support arm 106 correspond to the position of the line of action LA relative to the center line C, as discussed above. In some embodiments, at least one position of the support arm 106 corresponds to the engagement, or lack thereof, of the second member 114 with the first member

[0054] In Fig. 8, the earcup mounting assembly 100 is shown in a closed position in which the support arm 106 is oriented relative to the base 102 such that the line of action LA is on a first side of the center line C. In some embodiments, when in the closed position, the line of action LA may be on the first side (e.g., below) of the center line C and the first member 108 and second member 114 may not be engaged with one another. For example, and as illustrated in Fig. 8, when in the closed position, the first and second members 108, 114 do not directly abut one another and the line of action LA is below the center line C. In some embodiments, the earcup mounting assembly 100 is configured to generally prevent the arm 106 from rotating about center line C in a first direction beyond a certain position. In Fig. 8, the support arm 106 is illustrated in a closed position in which the line of action LA is generally parallel to a horizontal reference line H. In some instances, the support arm 106 may be configured to abut against the base 102 to prevent substantial rotation of the support arm 106 in a first direction (e.g., counterclockwise in Fig. 8) beyond the horizontal plane H. For example, the lower cover 128b abuts against the base 102 when the line of action LA is generally parallel to the horizontal plane H such that the support arm 106 is in a first stable overcenter open position.

[0055] In Fig. 9, the support arm 106 is shown in an open position. In some embodiments, the support arm 106 is rotated about the center line C in a clockwise direction from what is shown in Fig. 8 to what is shown in Fig. 9. In some embodiments, while in the open position, the line of action LA may be positioned on a second side of the center line C opposite the first side. For example, in the open position, the line of action LA is above the center line C as opposed to below the center line C when in the closed position. In some embodiments, when in the open position, the first member 108 may not be engaged with the second member 114. For example, the first and second members 108, 114 may not abut or directly contact one another when the support arm 106 is in the open position. In the open position, the detent(s) 112a, 112b of the second member 114 may be positioned below the first member 108. For example, the detents 112a, 112b in Fig. 9 are each positioned below the first member 108. In some embodiments, one or more of the detents 112a, 112b may not abut against the first member 108 while the support arm 106 is in the open position. In some embodiments, the support arm 106 is configured to abut the base 102 when in the open position to prevent further rotation of the support arm 106 in a second direction opposite the first direction. For example, the upper covering 128a abuts against the base 102 to prevent further rotation in the clockwise direction when viewed from the side illustrated in Fig. 9. In some embodiments, the biasing element 134 generating the biasing force along the line of action LA whenon the second side (e.g., above) the center line C causes the support arm 106 to abut against the base 102 in a second stable over-center position (e.g., the open position).

[0056] In Fig. 10, the earcup mounting assembly 100 is shown in an intermediate position that is between the open and closed positions. The support arm 106 may transition from the closed reference position illustrated in Fig. 8 and / or from the open position illustrated in Fig. 9 to the intermediate position illustrated in Fig. 10 via rotation of the support arm 106 about center line C in a clockwise or counterclockwise direction. In some embodiments, the intermediate position may be a position of the support arm 106 between the open position and closed position and configured to space an earcup from a user’s ear slightly to allow for venting while generally remaining usable by the user. In some embodiments, when in the intermediate position, the line of action LA is on the first side (e.g., below) of the center line C. In other embodiments, when in the intermediate position, the line of action LA is on the second side (e.g., above) of the center line C. In some embodiments, when in the intermediate position, the first member 108 of the base 102 and second member 114 of the support arm 106 engage one another to releasably retain the support arm 106 in the intermediate position.

[0057] In some embodiments, in the intermediate position, the detent(s) 112a, 112b may be engaged with the first member 108. For example, detent 112a is positioned below the first member 108 and abuts against the first member 108 while the support arm 106 is in the intermediate position. In some embodiments, the first member 108 is positioned between both detents 112a, 112b while the support arm 106 is in the intermediate position. For example, and as illustrated in Figs. 2, 3, 5 and 10, the detents 112a and 112b are on opposite sides of the first member 108 while the support arm 106 is in the intermediate position. In some embodiments, the support arm 106 is at an angle of 01 relative to the horizontal reference plane H when in the intermediate position. In some embodiments, the angle 01 is between about 20° to about 40°. In some embodiments, the angle 01 is between about 26°. In some embodiments, and referring briefly to Figs. 9-10, while in the open position, the support arm 106 may be at an angle 02 relative to the horizontal plane H. In some embodiments, the angle 02 is greater than the angle 01 corresponding to the intermediate position. In some embodiments, the angle 02 is between about 30° to about 90°. In some embodiments, the angle 02 is at least 45°. In some embodiments, the angle 02 is at least 30°.

[0058] In some embodiments, the position of the line of action LA relative to the center line C as discussed above, may refer to the position of the biasing element(s) 134 and / or biasing force generated therefrom relative to the center line C. As discussed above, the biasing element(s) 134 may generate a biasing force in a direction represented generally as the line of action LA.Accordingly, the line of action LA being positioned on a first side or second side of the center line C may be representative of either the position of the biasing element 134 and / or biasing force generated therefrom relative to the center line C. Although the line of action LA is represented in the figures as an axis of indeterminate length, for the sake of clarity, in some instances the line of action LA may generally extend between the fixed member 136 and second member 114.

[0059] Referring briefly to Figs. 1 and 10, while the support arm 106 is in the intermediate position, an earcup 14 coupled thereto may be spaced from the ear of a user 16, as discussed above. In such a position, airflow may be permitted between the earcup 14 and the user’s ear thereby allowing the user’s ear to cool down and / or better receive ambient sounds. For example, when the earcup 14 is in use it abuts against the user’s head, often forming a seal between the head and earcup 14. Accordingly, ambient noises may be muffled or blocked from reaching the user’s ear, and extended use may lead to a heat buildup between the earcup and the user’s head, which may cause discomfort. In some embodiments, while in the intermediate position, the support arm 106 may position the earcup 14 such that it is offset from the user’s head while allowing a user to hear communications coming through the earcup 14. For example, the space between the user’s head and the earcup 14 while the support arm 106 is in the intermediate position may be sufficient to enable a user to still hear communications being output from the earcup 14. It should be understood that the different hearing capabilities of different users and volume of the earcup 14 impact a user’s ability to hear sound from the earcup 14; however, in general, the intermediate position may allow for the average user to hear a sound generated from the earcup 14 without it being in direct contact with their head.

[0060] Referring back to Figs. 8-10, in some embodiments, the earcup mounting assembly 100 of the present disclosure is configured to enable a user to easily transition the support arm 106 to the intermediate position. For example, the tactile feedback resulting from the rotation of the support arm 106 about center line C causes the detent 112a to bend or deflect due to engagement with the first member 108. In some embodiments, the engagement of the second member 114 with the first member 108 may enable the support arm 106 to be retained in the intermediate position. For example, engagement of the first member 108 with detent 112a may be sufficient in order to resist the force the biasing member(s) 134 (shown in Fig. 6) exert on the arm 106, which biases it towards the horizontal reference position shown in Fig. 8. In some embodiments, while in the intermediate position, at least one of detents 112a, 112b is positioned below and abuts the first member 108. For example, the detent 112a is positioned below and abuts against the first member 108 in Fig. 10.

[0061] Referring to Figs. 11-14, the earcup mounting assembly 100 is in use coupling an earcup 14 to a helmet 10 and illustrating various positions of the support arm 106 of the present disclosure. In Fig. 11, the support arm 106 is in a use position in which the earcup 14 abuts against the user’s head. The use position in Fig. 11 differs from what is illustrated in Fig. 8 in that a line of action LA (not shown in Fig. 11) is not parallel to the horizontal reference plane H. In Fig. 11, the line of action LA would be positioned between what is illustrated in Fig. 8 and Fig. 10 while remaining on the first side (e.g., below) of the center line C. For example, in the use position, the angle of the support arm 106 relative to the reference plane H, shown in Figs. 8-10, may be between 0 (e.g., parallel) and 01. In some embodiments, the angle of the support arm 106, while in the use position, may be different between different users due to variations in head shapes, head sizes, helmets, earcups, mounting rails and / or the positioning of the earcup mounting assembly 100 relative to a helmet.

[0062] In Fig. 12, the support arm 106 is transitioned from the use position to the intermediate position. The intermediate position is described above with regards to Figs. 2 and 10, respectively, and will not be described again for the sake of brevity. In Fig. 13, the support arm 106, although obscured from view in Fig. 13, is rotated from the intermediate position to the open position described above with regards to Fig. 9. In the open position, the earcup 14 is spaced further from the user’s head than when the support arm 106 is in the intermediate position. In Fig. 14, the support arm 106 is translated from the open position to a stowage position. In the stowage position, the earcup 14 is moved away from the user’s head and positioned towards the rear of the helmet shell 10. In some embodiments, in the stowage position, the earcup 14 abuts against the helmet shell 10. In some embodiments, and referring briefly to Figs. 2 and 14, translation from the open position to the stowage position includes rotating the base 102 about the rotational axis R. For example, while the support arm 106 is in the open position, the base 102 is rotated relative to connector 138 about rotational axis R until the support arm 106 is directed towards the rear of the helmet 10, and the support arm 106 is then rotated about center line C until the earcup abuts against the helmet 10.

[0063] Referring to Figs. 15-27, there is illustrated an earcup mounting assembly, generally designated 200, in accordance with another exemplary embodiment of the present disclosure. The earcup mounting assembly 200 may be generally the same as earcup mounting assembly 100 described above with regards to Figs. 1-14, except that it may include first and second members 208, 214 that differ from the first and second members 108, 114 described above in at least the structure thereof.

[0064] Referring to Figs. 15-16, the earcup mounting assembly 200 may include a base 202, an earcup mount 204, and a support arm 206 coupling the earcup mount 204 to the base 202 in generally the same manner as support arm 106 as described above. The earcup mount 204 may be substantially the same as earcup mount 104 described above. The earcup mount 204 may be configured to couple an earcup (e.g., earcup 14) to the earcup mounting assembly 200 in generally the same manner as earcup mount 104 described above. In some embodiments, the earcup mount 204 is coupled to the support arm 206 opposite the base 202. The base 202 and support arm 206 may be similar to the base 102 and support arm 106 described above but may include one or more structures that differ as described in more detail below. The base 202 may define a center line C about which the support arm 206 is rotatable. In some embodiments, the base 202 includes at least one hinge pin 210 disposed along the center line C. For example, the base 202 includes opposed hinge pins 210 substantially the same as hinge pins 110 that extend circumferentially around the center line C. The support arm 206 may include an upper covering 228a and lower covering 228b similar to the coverings 128a, 128b described above.

[0065] The earcup mounting assembly 200 may include a connector 238 coupled to the base 202 and configured to couple the earcup mounting assembly 200 to a mounting rail of a helmet shell (e.g., mounting rail 12 of helmet shell 10 described above). The connector 238 may be substantially the same as connector 138 described above and, in some instances, may be connected to the base 202 in generally the same manner as connector 138 is connected to base 102. In some embodiments, the base 202 and / or support arm 206 are rotatable relative to the connector 238 about a rotational axis R, similar to the base 102 and support arm 106 as described above. The base 202 may be coupled to the connector 238 such that it is rotatable about the rotational axis R, which may be generally perpendicular to the center line C, such that rotation of the base 202 relative to the connector 238 about the rotational axis R causes the support arm 206 to rotate with the base 202 about the rotational axis R.

[0066] In some embodiments, the earcup mounting assembly 200 includes a biasing element 234 similar to the biasing element 134 described above. The biasing element 234 may be coupled to the base 202 and support arm 206 and form an over-center mechanism therewith in generally the same manner as biasing element(s) 134 described above. The biasing element 234 may apply a biasing force to the base 202 and support arm 206 along a line of action LA therebetween, in generally the same manner as described above with regards to biasing element 134. In some embodiments, the biasing element 234 is fixedly coupled to each of the base 202 and support arm 206 at opposite ends thereof. For example, a proximal end of the biasing element 234 is connected to the base 202 via afixed member 235 and a distal end of the biasing element 234 is connected to the support arm via a fixed member 236. Each of the fixed members 235, 236 may be fixedly coupled to the respective base 202 and support arm 206 and the line of action LA may pass through both the fixed members 235, 236. Fixed member 236 may be substantially the same as fixed member 136 described above. Fixed member 235 may be similar to the first member 108 except that it may not protrude from the base 202 and / or directly engage with any corresponding mating members to releasably retain the support arm 206 in a desired position as described above. In some embodiments, the fixed member 235 is provided to connect the biasing element 234 to the base 202. In some embodiments, the earcup mounting assembly 200 includes two or more biasing elements 234, each defining a respective line of action LA similar to the earcup mounting assembly 100 described above.

[0067] The support arm 206 may be rotatable relative to the base 202 between an open position and a closed position in generally the same manner as support arm 106 described above. The support arm 206 may be rotatable about the center line C between at least a closed position in which the line of action LA defined by the biasing element 234 is on a first side of the center line C (e g., below the center line C) and an open position in which the line of action LA is on a second side of the center line C opposite the first side (e.g., above the center line C). For example, the support arm 206 is rotatable between open and closed positions substantially similar to those described above with regards to earcup mounting assembly 100. Further examples of the open and closed positions are described in more detail below.

[0068] Referring to Figs. 17-19, the support arm 206 may be configured to be retained in an intermediate position between the open and closed positions via engagement of first and second members 208, 214 similar to the support arm 106 described above, except that the first and second members 208, 214 may differ from the first and second members 108, 114 described above. The base 202 may include the first member 208 and the support arm 206 may include the second member 214. In some embodiments, the second member 214 is a cammed surface and the first member 108 is a follower surface. The second member 214 may be a cammed surface rotationally fixed to the support arm 206 such that as the support arm 206 rotates about the center line C, the cammed surface 214 rotates with it. The cammed surface 214 may be a generally curved surface including at least one peak and one valley. In some instances, the cammed surface 214 includes a peak and at least two valleys or at least three inflection points.

[0069] In some embodiments, the cammed surface 214 is fixed to a body of the support arm 206 such that the cammed surface 214 moves relative to the center line C with the support arm 206. For example, the cammed surface 214 is fixedly coupled to the lower covering 228b of the support arm206, which, along with the upper covering 228a, form the body of the support arm 206. In some embodiments, the cammed surface 214 is integrally formed with a body of the support arm 206. For example, the cammed surface 214 is integrally formed with the lower covering 228b of the support arm 206.

[0070] In some embodiments, the follower surface 208 of the base 202 may be configured to engage with the cammed surface 214 of the support arm 206 to releasably retain the support arm in an intermediary position similar to the base 102 and support arm 106 described above. The follower surface 208 of the base 202 may be configured to abut against the cammed surface 214 while the support arm 206 is at least in the intermediate position, as discussed in more detail below. In some embodiments, the follower surface 208 has a shape corresponding to the shape of the cammed surface 214. For example, the follower surface 208 is a generally curved surface, similar to the cammed surface 214. In some embodiments, the follower surface 208 is shaped to act as a negative profile that fits the contoured positive profile of the cammed surface 214. The follower surface 208 may be a curved surface that has a complementary profile to the curved surface of the cammed surface 214. For example, the follower surface 208 includes two peaks and one valley to generally mate with the one peak and two valleys of the cammed surface 214. In some embodiments, the follower surface 208 is fixed in relation to a body 203 of the base 202. In some embodiments, the follower surface 208 is integrally formed with a body 203 of the base 202.

[0071] In some embodiments, the base 202 includes a pair of follower surfaces 208 and the support arm 206 includes a corresponding pair of cammed surfaces 214. The base 202 may include two follower surfaces 208 spaced from one another and generally disposed at opposed sides (e.g., left and right sides) of the body 203. For example, and as illustrated in Figs. 16-17, the base 202 includes two follower surfaces 208 integrally formed with the body 203. Each of the follower surfaces 208 may be substantially identical to one another (e.g., substantially identical in size and / or shape). The support arm 206 may include two cammed surfaces 214 corresponding to the two follower surfaces 208. For example, the support arm 206 includes two cammed surfaces 214 disposed at opposed sides (e.g., left and right sides) of the lower covering 228b and configured to mate with the corresponding pair of follower surfaces 208. In some embodiments, the pair of cammed surfaces may be substantially identical to one another in at least size and / or shape.

[0072] In some embodiments, the support arm 206 is slidable relative to the center line C in a linear direction. The support arm 206 may include a slot 213 configured to engage a hinge pin 210 of the base 202 such that the support arm 206 is rotatable relative to the base 202 about the center line C between the open position and closed position and slidable relative to the center line C in alinear direction. The slot 213 may generally be a channel formed in the body of the support arm 206 and the hinge pin 210 may extend therethrough to couple the support arm 206 to the body 203 of the base 202. In some embodiments, the support arm 206 includes a pair of slots 213 at opposed sides (e.g., left and right sides) thereof and the base 202 includes a pair of hinge pins 210 configured to extend through the respective slots 213. The base 202 may include apertures 211 extending along the center line C for receiving the hinge pins 210. In some embodiments, the slots 213 of the support arm 206 may align with the apertures 211 in the base 202, and the hinge pins 210 may extend through respective slots 213 and aligned apertures 211 thereby rotatably coupling the support arm 206 to the base 202.

[0073] In some embodiments, engagement of the slot(s) 213 of the support arm 206 with corresponding hinge pin(s) 210 enables the support arm 206 to slide or translate relative to the base 202 and / or center line C in a linear direction. For example, and as illustrated in Figs. 20-21, the support arm 206 translates rearwardly from the position illustrated in Fig. 20 to the position illustrated in Fig. 21. In some embodiments, the slot(s) 213 may define the linear direction of the translation for the support arm 206. For example, the outer surface of the hinge pin 210 engages the inner sidewalls defined by the slot 213 such that linear translation of the support arm 206 is limited to translation of the slot 213 about the hinge pin 210. In some embodiments, as the support arm 206 translates linearly relative to the center line C and / or base 202, the slot 213 slides over the hinge pin 210, which may be fixed in position relative to the base 202. In some embodiments, the support arm 206, being translatable relative to the base 202 and / or center line C in a linear direction, may enable the cammed surface 214 and follower surface 208 to selectively move into and out of engagement with one another, as discussed in more detail below.

[0074] Referring to Figs. 22-23, the earcup mounting assembly 200 may be configured to be retained in a closed position similar to the earcup mounting assembly 100 described above. In Figs.22-23, the support arm 206 is illustrated in a closed position in which the line of action LA, as generally defined by the fixed members 235, 236 and / or corresponding biasing element, being positioned on the first side of the center line C (e.g., below the center line C). In some embodiments, the closed position illustrated in Figs. 22-23 may generally represent a lower limit of rotation of the support arm 206 about the center line C. For example, while the biasing element 234 extending between members 235, 236 is below the center line C, it applies a biasing force pulling the base 202 and support arm 206 toward one another, however the lower frame 228b abuts the body 203 of the base 202 preventing further rotation or translation due to the biasing force.

[0075] In some instances, when in the closed position, the first member 208 of the base 202 may at least partially engage the second member 214 of the support arm 206. The cammed surface 214 may generally remain in engagement with the follower surface 208 of the base 202 when the support arm 206 is in the closed position. For example, a portion of the cammed surface 214 directly contacts a portion of the follower surface 208 when the support arm 206 is in the closed position. In some embodiments, when in the closed position, line contact is established between the cammed surface 214 and follower surface 208 (e.g., direct contact between the two surfaces is generally along a line).

[0076] Referring to Figs. 24-25, the earcup mounting assembly 200 may be configured to be retained in an open position similar to the earcup mounting assembly 100 described above. In Figs.24-25, the support arm 206 is illustrated in an open position in which the line of action LA, as generally defined by the fixed members 235, 236 and / or corresponding biasing element, being positioned on the second side of the center line C (e.g., above the center line C) opposite the first side. In some embodiments, the open position illustrated in Figs. 24-25 may generally represent an upper limit of rotation of the support arm 206 about the center line C. For example, while the biasing element 234 extending between members 235, 236 is above the center line C, it applies a biasing force pulling the base 202 and support arm 206 toward one another, however the upper frame 228a abuts the body 203 of the base 202, preventing further rotation or translation due to the biasing force.

[0077] In some instances, when in the open position, the first member 208 of the base 202 may at least partially engage the second member 214 of the support arm 206. The cammed surface 214 may generally remain in engagement with the follower surface 208 of the base 202 when the support arm 206 is in the open position. For example, and as illustrated in Fig. 25, a portion of the cammed surface 214 directly contacts a portion of the follower surface 208 when the support arm 206 is in the open position. In some embodiments, when in the open position, line contact is established between the cammed surface 214 and follower surface 208 (e.g., direct contact between the two surfaces is generally along a line).

[0078] Referring to Figs. 26-27, the earcup mounting assembly 200 may be configured to be retained in an intermediate position similar to the earcup mounting assembly 100 described above. In Figs. 26-27, the support arm 206 is illustrated in an intermediate position between the open and closed positions. In some embodiments, the intermediate position of the support arm 206 may be generally similar to the intermediate position described above with regards to support arm 106. For example, in the intermediate position, the support arm 206 may allow for venting to occur similar towhat is described above. In some embodiments, the first member 208 (e.g., follower surface 208) engages the second member 214 (e g., cammed surface 214) to releasably retain the support arm 206 in the intermediate position. For example, and as illustrated in Fig. 27, a peak (or protrusion) of the cammed surface 214 is positioned within a valley (or recess) defined by the follower surface 208. Further to this example, such engagement may be sufficient to overcome the biasing force acting on both the support arm 206 and base 202 along the line of action LA, thereby preventing rotation about the center line C due to the biasing force.

[0079] Referring to Figs. 23, 25 and 27, in some embodiments, the follower surface 208 and cammed surface 214 may generally remain engaged during rotation of the support arm 206 causing it to slide relative to the center line C in a linear direction. Engagement of the cammed surface 214 and follower surface 208 during rotation of the support arm 206 about the center line C from one or more of the open position, intermediate position, and closed position towards one or more remaining positions may cause the support arm 206 to translate in a linear direction relative to the center line C. For example, as the support arm 206 rotates about the center line C from the intermediate position (e.g., illustrated in Fig. 27) towards the closed position (e.g., illustrated in Fig. 23), the cammed surface 214 remains engaged with the follower surface 208, causing the support arm 206 to translate in a linear direction away from the base 202 as the support arm 206 comes to rest in the closed position.

[0080] The earcup mounting assembly 200 of the present disclosure may be configured to be translated into a stowage position in substantially the same manner as earcup mounting assembly 100 discussed above. In some embodiments, the earcup mounting assembly 100 and / or assembly 200 may enable an earcup (e.g., earcup 14) to be mounted thereto and retained in a venting configuration (e.g., intermediate position of support arms 106, 206) as discussed above. The earcup mounting assemblies 100 and / or 200 may enable a user to quickly and easily grip the earcup to transition the support arm 106, 206 connected thereto from a closed position (e.g., a use position) to a venting position (e.g., intermediate position) thereby retaining the earcup in said venting position without requiring further input from the user. Accordingly, the earcup mounting assemblies 100, 200 may enable the user to quickly and easily vent heat buildup, adjust the earcup for comfort, and / or provide temporary relief while keeping the earcup close to the user’s head, enabling the user to hear communications and / or transmit communications.

[0081] The term “about” or “approximately” is used herein to provide literal support for the exact number that it precedes, as well as a number that is near to or approximately the number that the term precedes. In determining whether a number is near to or approximately a specificallyrecited number, the near or approximating unrecited number may be a number that, in the context in which it is presented, provides the substantial equivalent of the specifically recited number. It should be appreciated that all numerical values and ranges disclosed herein are approximate values and ranges, whether “about” is used in conjunction therewith. It should also be appreciated that the term “about,” as used herein, in conjunction with a numeral refers to a value that may be ±0.01% (inclusive), ±0.1% (inclusive), ±0.5% (inclusive), ±1% (inclusive) of that numeral, ±2% (inclusive) of that numeral, ±3% (inclusive) of that numeral, ±5% (inclusive) of that numeral, ±10% (inclusive) of that numeral, or ±15% (inclusive) of that numeral. It should further be appreciated that when a numerical range is disclosed herein, any numerical value falling within the range is also specifically disclosed.

[0082] It will be appreciated by those skilled in the art that changes could be made to the exemplary embodiments shown and described above without departing from the broad inventive concepts thereof. It is to be understood that the embodiments and claims disclosed herein are not limited in their application to the details of construction and arrangement of the components set forth in the description and illustrated in the drawings. Rather, the description and the drawings provide examples of the embodiments envisioned. The embodiments and claims disclosed herein are further capable of other embodiments and of being practiced and carried out in various ways.Specific features of the exemplary embodiments may or may not be part of the claimed invention, and various features of the disclosed embodiments may be combined. Unless specifically set forth herein, the terms “a”, “an” and “the” are not limited to one element but instead should be read as meaning “at least one”. Finally, unless specifically set forth herein, a disclosed or claimed method should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the steps may be performed in any practical order.

Claims

CLAIMSWhat is claimed is:

1. An earcup mounting assembly comprising:a base configured to be coupled to a helmet shell and including a first member;a support arm including a second member, the support arm coupled to and rotatable relative to the base about a center line; anda biasing element coupled to the base and support arm and applying a biasing force to the base and support arm along a line of action therebetween,wherein the base, support arm and biasing element form an over-center mechanism and the support arm is rotatable between a closed position in which the line of action is on a first side of the center line and an open position in which the line of action is on a second side of the center line opposite the first side, andwherein the first member of the base and the second member of the support arm engage one another when the support arm is at an intermediate position between the open position and closed position such that the support arm is releasably retained in the intermediate position.

2. The earcup mounting assembly of claim 1, wherein the second member is a c-clip including a detent and the first member is a pin fixedly coupled to the base and protruding outwardly therefrom.

3. The earcup mounting assembly of claim 2, wherein the pin extends through the base and protrudes outwardly therefrom at opposed side surfaces of the base.

4. The earcup mounting assembly of claim 3, wherein the c-clip is a first c-clip and the earcup mounting assembly further comprises a second c-clip coupled to the support arm opposite the first c-clip and rotatable with the support arm about the first axis, andwherein the first and second c-clips are engaged with the pin where the pin protrudes outwardly from the side surfaces of the base.

5. The earcup mounting assembly of claim 1, wherein the second member is a cammed surface and the first member is a follower surface.

6. The earcup mounting assembly of claim 5, wherein the support arm is translatable relative to the center line in a linear direction and rotatable about the center line, andwherein rotation of the support arm about the center line while the cammed surface and follower surface are interfaced causes the support arm to translate relative to the center line in the linear direction.

7. The earcup mounting assembly of claim 6, wherein the base includes a hinge pin defining the center line and the support arm includes a slot through which the hinge pin extends rotatably coupling the support arm to the base.

8. The earcup mounting assembly of claim 1, wherein the support arm is translatable from the open position to a stowage position, andwherein translation from the open position to the stowage position includes rotating the base and support arm together about a rotational axis that is perpendicular to the center line.

9. The earcup mounting assembly of claim 8 further comprising a connector coupled to the base and configured to be coupled to a mounting rail connected to the helmet shell, andwherein the base is rotatable relative to the connector about the rotational axis.

10. An earcup mounting assembly comprising:a base including a hinge pin disposed along a center line; anda support arm including a slot engaged with the hinge pin such that the support arm is rotatable relative to the base about the center line between an open position and a closed position and slidable relative to the center line in a linear direction,wherein the support arm includes a cammed surface and the base includes a corresponding follower surface that engages the cammed surface to releasably retain the support arm in an intermediary position relative to the base between the open position and closed position, and wherein engagement of the cammed surface and follower surface during rotation of the support arm about the center line from the intermediate position towards at least one of the open position and closed position causes the slot of the support arm to slide along the hinge pin relative to the center line in the linear direction.

11. The earcup mounting assembly of claim 10 further comprising:a biasing element coupled to the base and support arm and forming an over-center mechanism therewith, the biasing element applying a biasing force to the base and support arm along a line of action therebetween,wherein when the support arm is in the closed position the line of action is on a first side of the center line and when the support arm is in the open position the line of action is on a second side of the center line opposite the first side.

12. The earcup mounting assembly of claim 10 further comprising:a connector coupled to the base and configured to couple the earcup mounting assembly to a mounting rail of a helmet shell, andwherein the base and support arm are rotatable relative to the connector about a rotational axis that is perpendicular to the center line.

13. The earcup mounting assembly of claim 10 further comprising:an earcup mount configured to couple an earcup to the earcup mounting assembly, the earcup mount coupled to the support arm opposite the base.

14. The earcup mounting assembly of claim 10, wherein the cammed surface is fixed to a body of the support arm such that the cammed surface rotates about the center line and translates relative to the center line with the support arm.

15. The earcup mounting assembly of claim 14, wherein the cammed surface is integrally formed with the body of the support arm.

16. The earcup mounting assembly of claim 10, wherein the follower surface is integrally formed with a body of the base.

17. The earcup mounting assembly of claim 10, wherein the cammed surface is a curved surface including at least one peak and one valley.

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