A HEAD RESTRAINT

Abstract

A head restraint has a flexible tension strap, a forehead band and a shaped cushioning wedge member connected between the strap and the forehead band. The tension strap anchors the lower edge of the wedge member which acts as a fulcrum and the wedge member comprises structural integrity to be sufficiently rigid to act as a load arm to apply rearward load force on the forehead band against effort force applied against the front of the wedge member by the user's neck.

Claims

1. A head restraint comprising a flexible tension strap; a forehead band; a shaped cushioning wedge member connected between the strap and the forehead band, wherein: the wedge member has a generally planar rear continuing from the strap and a front being convex in vertical cross section which transitions rearwardly to a lower edge thereof to meet the strap and to an upper region thereof from where the forehead band is connected and wherein the convex front surface extends forwardly between the lower edge and the upper region such that, in use, when the tension strap is caught between a user's back and a seat, the tension strap anchors the lower edge of the wedge member which acts as a fulcrum and the wedge member comprises structural integrity to be sufficiently rigid to act as a load arm to apply rearward load force on the forehead band against effort force applied against the front of the wedge member by the user's neck.

2. The head restraint as claimed in claim 1, wherein the wedge member transitions rearwardly at a lower region thereof to define an undersurface which bears downwardly on shoulders of the user in use.

3. The head restraint as claimed in claim 1, wherein the undersurface is 45° or more with respect to a plane defined by the seat.

4. The head restraint as claimed in claim 1, wherein the wedge member comprises structural sides either side of a core.

5. The head restraint as claimed in claim 4, wherein the structural sides comprise semi-resilient foam pieces.

6. The head restraint as claimed in claim 4, wherein the structural sides are shaped to define convex curvature of the wedge member.

7. The head restraint as claimed in claim 4, wherein structural sides are shaped to extend more forwardly at lower regions thereof.

8. The head restraint as claimed in claim 4, wherein the core comprises less dense material as compared to the structural sides.

9. The head restraint as claimed in claim 4, wherein the structural sides and core is covered with a material covering.

10. The head restraint as claimed in claim 9, wherein, when the user's neck presses against the front in use, the material covering presses inwardly into the core and pulls the structural sides close in to wedge against sides of the neck for lateral stability.

11. The head restraint as claimed in claim 1, wherein the wedge member further comprises a structural backboard at the rear thereof.

12. The head restraint as claimed in claim 11, wherein the structural backboard comprises longitudinal formations along a vertical axis to enhance bending resilience thereof with respect to the vertical axis.

13. The head restraint as claimed in claim 1, wherein the forehead band comprises relatively thin, stretchable and breathable material.

14. The head restraint as claimed in claim 1, wherein the forehead band comprises material thinner than that of the strap.

15. The head restraint as claimed in claim 1, wherein the forehead band widens towards a front thereof.

16. The head restraint as claimed in claim 1, further comprising a flap which folds over an upper edge of the wedge member to secure the forehead band thereunderneath.

17. The head restraint as claimed in claim 16, wherein the flap is secured along a front edge across the front of the wedge member and attachable to a rear of the wedge member at a rear edge thereof.

18. The head restraint as claimed in claim 17, wherein the rear edge attaches using hook and loop fasteners along a vertical length of the rear of the wedge member.

19. The head restraint as claimed in claim 16, wherein a head restraint is provided with a plurality of forehead bands of differing diameters, each of which may be selected according to a head size.

20. The head restraint as claimed in claim 19, wherein flap comprises an interior concealed pocket within which the plurality of forehead bands are stored.

21. The head restraint as claimed in claim 1, wherein a lower edge of the strap comprises a widthwise fastener which attaches to a widthwise fastener strip along the strap and on an opposite side of the strap when the head restraint is rolled up.

22. The head restraint as claimed in claim 21, wherein the widthwise fastener of the lower edge is on a rear surface of the strap and the widthwise fastener along the strap is on a front surface of the strap.

23. The head restraint as claimed in claim 21, wherein the strap further comprises a widthwise carry strap between the widthwise fasteners.

24. The head restraint as claimed in claim 1, wherein the strap comprises neoprene.

25. The head restraint as claimed in claim 1, wherein the strap comprises sufficient length to extend to a lumbar region.

26. The head restraint as claimed in claim 25, wherein the strap comprises in sufficient length to avoid being sat upon in use.

27. The head restraint as claimed in claim 26, wherein the strap comprises a length from the wedge member of approximately 50 centimetres.

28. The head restraint as claimed in claim 1, wherein, in use, a user can adjust the tension applied by the strap by leaning forward to free the strap to tilt the head forwards or backwards before lying back again to reengage the strap to apply user adjustable tension.

29. The head restraint as claimed in claim 1, wherein the strap is approximately 18 centimetres wide.

30. The head restraint as claimed in claim 29, wherein the strap comprises an upper narrowed thoracic region section and a lower widened lumbar region section.

31. The head restraint as claimed in claim 30, wherein the widened lumbar region comprises substantially the same width of that of the wedge member.

32. The head restraint as claimed in claim 1, wherein the strap is length adjustable by folding the strap back on itself wherein the strap comprises a rear widthwise fastener strip at a lower edge thereof and a substantial portion of the rear surface of the strap comprises corresponding fastener material, the rear widthwise fastener strip and the corresponding fastener material comprising hook and loop fasteners, so that, when the bottom edge of the strap is folded back on itself, the rear widthwise fastener strip engages and holds along the strap corresponding fastener material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Notwithstanding any other forms which may fall within the scope of the present invention, preferred embodiments of the disclosure will now be described, by way of example only, with reference to the accompanying drawings in which:

[0049] FIG. 1 shows a rear perspective view of a head restraint being worn by a user;

[0050] FIG. 2 shows a side perspective view of the head restraint;

[0051] FIGS. 3 and 4 show interior horizontal plane cross-sectional views of a shaped cushioning wedge member of the head restraint in accordance with an embodiment;

[0052] FIG. 5 illustrates the application of the head restraint and the various forces applied thereby to restrain the head;

[0053] FIG. 6 shows a front perspective view of the head restraint;

[0054] FIG. 7 shows a rear perspective view of the head restraint;

[0055] FIG. 8 illustrates the head restraint rolled up into compact form; and

[0056] FIG. 9 illustrates physical forces applied by the cushioning wedge member.

DESCRIPTION OF EMBODIMENTS

[0057] A head restraint 100 comprises a flexible material tension strap 101, a retaining forehead band 102 and a shaped cushioning wedge member 103 connected between the strap 101 and the forehead band 102.

[0058] As best shown in FIG. 5, the wedge member 103 has a generally planar rear 106 continuing from the strap 101 at a lower edge 107 thereof.

[0059] The wedge member 103 comprises a front 108 being generally convex in side view vertical cross section which transitions rearwardly to the lower edge 107 to meet the strap 101 and transitions rearwardly to an upper region 109 from where the forehead band 102 is connected.

[0060] As shown in FIG. 5, and with further reference to FIG. 9, when the tension strap 101 is frictionally anchored between the spine of a user and a seat 110, the lower edge 107 acts as a fulcrum 113. The wedge member 103 comprises structural integrity to be sufficiently rigid to act as a load arm 114 to apply rearward load force 111 on the forehead band 102 against effort force 112 applied against the front 108 by the user's neck 119.

[0061] As is further illustrated in FIG. 5, the wedge member 103 may transition rearwardly at relatively steep angle at a lower region thereof to define an undersurface 115 of 45° or more with respect to a plane defined by the seat which may bear downwardly on the shoulders on the user in use, thereby additionally pivoting the wedge member 103 rearwardly about the lower edge 107/fulcrum 113 to apply additional rearward load force 111 to the forehead band 102 to hold the head back.

[0062] The wedge member 103 may comprise interior structural members to provide the sufficient resilience to act as the load arm 114. The interior structural members may comprise foam pieces.

[0063] With reference to FIG. 3, the wedge member 103 may comprise structural sides 116 either side of a core 117. The structural sides 116 may comprise semi-resilient foam pieces which may be shaped to define the convex shape illustrated in FIG. 5. The structural sides 116 may be shaped to extend more forwardly at lower regions thereof so as to conform forwardly around the neck region as compared to an upper head region.

[0064] The core 117 may comprise less dense foam or non-integral pieces, such as stuffing, shredded foam pieces and or the like. The core 117 may comprise memory foam.

[0065] The wedge member 103 may be covered at the front within a material covering 118. The rear of the wedge member 103 may comprise the same material as that of the strap 101, such as of neoprene.

[0066] In embodiments, the core 117 may allow a gap between a front surface thereof and the material covering 118.

[0067] As is illustrated in FIG. 4, when the user's neck 119 presses against the front 108, the material covering 118 may be pressed inwardly into the core 117 to pull in the structural sides 112 close in as is illustrated to wedge in against the sides of the neck 119, thereby providing lateral support to prevent the head lolling sideways.

[0068] The wedge member 103 may further comprise a structural backboard 129 such as of card or plastic. The structural backboard 129 may comprise longitudinal formations (such as corrugations or fluting) along a vertical axis to enhance the bending resilience thereof with respect to the vertical axis.

[0069] Whereas in embodiments the forehead band 102 may be adjustable, in accordance with a preferred embodiment, forehead band 102 is of fixed length. The forehead band 102 may be of relatively thin, slightly stretchable and breathable material to comfortably engage across the forehead without inducing sweat buildup. As shown in FIG. 5, the forehead band 102 may widen towards a front thereof.

[0070] In embodiments, the forehead band may comprise a pair of lateral buttons or similar attachments such as approximately collocating to the position of the ears to which a facemask may be attached, rather than around the ears.

[0071] As is shown in FIGS. 1, 6 and 7, a flap 120 may fold over an upper edge of the wedge member 103 to secure the forehead band 102 thereunderneath. The flap 120 may be secured along a front edge 121 thereof across the front 108 of the wedge member 103 are shown in FIG. 6 and attached to a rear of the wedge member 103 at a rear edge 122 thereof. The rear edge 122 may attach using hooks and loop fasteners. Specifically, the rear edge 122 may comprise a hook strap which attaches anywhere along the length of a loop backing 123.

[0072] The head restraint 102 may be provided with a plurality of forehead bands 102, each of which may be selected depending on the size of one's head. The flap 120 may comprise an interior concealed pocket there underneath (not shown) within which a plurality of these forehead bands may be stored, along with other accessories, such as headphones, eye patches and the like. Alternatively, the flap 120 may allow the user to use another forehead band 102 of one's own choice.

[0073] The head restraint 100 may be rolled up in the manner illustrated in FIG. 8. The head restraint 100 may attach to itself using hook and loop fasteners. Specifically, with reference to FIG. 1, a rear lower edge of the strap 101 may comprise a rear widthwise fastener strip 124 which attaches to a front widthwise fastener strip 125 along the strap 101.

[0074] To roll up the head restraint 101, the wedge member 103 may be rolled along a rear surface of the strap 101 until the rear fastener strip 104 can attach to the front fastener strip 125. The strap 101 may comprise a front widthwise carry strap 126 between the rear fastener strip 124 and the front fastener strip 125.

[0075] The strap 101 preferably comprises neoprene which was found to provide sufficient resilience yet slight stretchability, comfort and frictional engagement ability to wedge behind the back of the user. The neoprene may be approximately 4 mm thick. In embodiments, the neoprene may comprise perforations for breathability and to reduce sweating, especially such as towards the upper back, neck region. Such perforations may further reduce the overall weight of the restraint 100 by approximately 5%.

[0076] As illustrated in FIG. 1, the strap 101 may have sufficient length to extend along a thoracic region 127 of the user. In a preferred embodiment, the strap 101 has sufficient length to extend additionally along a lumbar region 128. The strap 101 however is preferably not too long to avoid being sat upon in use.

[0077] In this regard, the strap 101 comprise a length from the wedge member 103 of approximately 50 centimetres.

[0078] In embodiments, the strap 101 may be length adjustable by folding the strap 101 back on itself. For example, with reference to FIG. 7, the rear widthwise fastener strip 124 may comprise hook fasteners. Furthermore, the entire or substantially entire rear surface of the strap 101 may comprise loop fasteners. As such, the user may fold the bottom end of the strap 101 back on itself such that the rear widthwise fastener strip engages and holds along the strap 101. In this way, for example for example, the user may adjust the length of the strap to between approximately 20 cm-50 cm.

[0079] The length of the strap 101 allows the user to adjust the tension applied thereby by leaning forward to free the strap 101 wherein the head can be tilted forwards or backwards before lying back again to reengage the strap 101 to apply user adjustable tension.

[0080] The strap 101 may be sufficiently wide to provide sufficient frictional engagement and prevent slippage in use. The strap 101 may be approximately 18 centimetres wide. The strap 101 may comprise an upper narrowed section 104 at the thoracic region 127 which widens to a lower wider section 105 at the lumbar region 108 to gain most frictional purchase at the lower wider section 105 which extends further rearwardly against the seat. Furthermore, the wider section 105 may encapsulate the wedge member 103 when the restraint 100 is rolled in the manner shown in FIG. 8. The narrowed section may reduce the overall weight of the restraint 100. The wider section 105 may comprise substantially the same width of that of the wedge member 103.

[0081] In embodiments, smaller versions of the restraint 100 may be produced for use by children.

[0082] The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the invention. However, it will be apparent to one skilled in the art that specific details are not required in order to practise the invention. Thus, the foregoing descriptions of specific embodiments of the invention are presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed as obviously many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the following claims and their equivalents define the scope of the invention.

[0083] The term “approximately” or similar as used herein should be construed as being within 10% of the value stated unless otherwise indicated.