Helmets, shoulder pads, thigh pads, and other impact protection devices are used by people in various situations to help protect the body from injury due to impact. For example, in contact sports such as football, hockey, and lacrosse, impacts to the head can cause adverse effects to the player. As such, impact protection devices, such as helmets, can be used to mitigate the occurrence or severity of head injury, such as concussions.
Conventional protective gear is configured to absorb impact energy through the use of compressive pads. Such pads do absorb some energy, but can suffer from a variety of deficiencies. For example, following the impact pads can become fully compressed, thereby reaching their compression limit and losing effectiveness. Further, in response to compressive loading, only the portion of the pad directly under the impact location and areas of the pad close to the impact location, are compressed. This limits the pad volume involved in energy absorption which, in turn, reduces the pad's effectiveness.
Elastomeric coupling between inner and outer shells of a helmet can be utilized to overcome the deficiencies associated with compressive pads. However, assembly of helmets having elastomeric couplings can be time consuming and labor intensive. Further, the hardware utilized for the assembly of conventional helmets having elastomeric couplings can add to the helmet's overall weight.
By contrast to conventional protective gear, embodiments of the present innovation relate to an impact protection device and method of assembly. In one arrangement, the impact protection device can include an elastomer attachment system configured to secure elastomeric members to first and second shells of the device. For example, the elastomer attachment system can include a first elastomer attachment mechanism configured to capture and secure a first portion of an elastomeric band relative to an outer surface of a first shell of the impact protection device. Further, the elastomer attachment system can include a second elastomer attachment mechanism configured to secure a second portion of the elastomeric band relative to an inner surface of the second shell of the impact protection device. In use, the elastomer attachment system allows a manufacturer to assemble the impact protection device in a relatively non-labor intensive manner with a relatively low manufacturing cost.
Embodiments of the innovation relate to an impact protection device, comprising: a first shell configured to be disposed on a body portion of a user; a second shell spaced at a distance from the first shell; an elastomeric member spanning the distance between the first shell and the second shell; and an elastomer attachment system configured to secure the elastomeric member between the first shell and the second shell. The elastomer attachment system comprises: a first elastomer attachment mechanism coupled to the first shell, a first portion of the elastomeric member disposed between the first elastomer attachment mechanism and an outer wall of the first shell, and a second elastomer attachment mechanism coupled to the second shell, a second portion of elastomeric member disposed between the second elastomer attachment mechanism and an inner wall of the second shell.
Embodiments of the innovation relate to a method of assembling an impact protection device, comprising: securing a first portion of an elastomeric member to an outer surface of a first shell via a first elastomeric attachment mechanism; coupling a first attachment section of a second elastomeric attachment mechanism to an inner surface of a second shell; inserting a second attachment section of the second elastomeric attachment mechanism within a second portion of the elastomeric member to dispose the second portion of the elastomeric member between the second elastomeric attachment mechanism and the inner surface of the second shell; and coupling the second attachment section of the second elastomeric attachment mechanism to the inner surface of the second shell to secure the second portion of the elastomeric member to the inner surface of the second shell.
The foregoing and other objects, features and advantages will be apparent from the following description of particular embodiments of the innovation, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of various embodiments of the innovation.
Embodiments of the present innovation relate to an impact protection device and method of assembly. In one arrangement, the impact protection device can include an elastomer attachment system configured to secure elastomeric members to first and second shells of the device. For example, the elastomer attachment system can include a first elastomer attachment mechanism configured to capture and secure a first portion of an elastomeric band relative to an outer surface of a first shell of the impact protection device. Further, the elastomer attachment system can include a second elastomer attachment mechanism configured to secure a second portion of the elastomeric band relative to an inner surface of the second shell of the impact protection device.
As illustrated, the impact protection device 610 includes an inner or first shell 614, an outer or second shell 612 and a set of one or more elastomeric members 400 coupled to, and extending between, the first and second shells 614, 612 via an elastomer attachment system 700.
The first shell 614 is configured to be disposed on a body portion of a user. For example, in the case where the impact protection device 610 is a helmet, the first shell 614 can be disposed on a user's head 600. The second shell 612 is spaced at a distance d from the first shell 614. While the distance d can include a variety of lengths, in one arrangement, the distance d between the second shell 612 and the first shell 614 is approximately one inch. With such spacing, the second shell 612 is configured to translate and/or rotate relative to the first shell 614 in response to an external load. The first and second shells 614, 612 can be manufactured from a variety of materials. In one arrangement, each of the shells 614, 612 can be manufactured from a relatively rigid material, such as a plastic material (e.g., polycarbonate).
In one arrangement, the impact protection device 610 can include a face mask 620 mechanically coupled to the second shell 612. With such an arrangement, external forces applied to the face mask 620 are transferred to the second shell 612 of the impact protection device 610, thereby creating motion of the second shell 612 relative to the first shell 614 which results in dispersion of the external forces.
The set of elastomeric members 400 include individual elastomeric members 402 spanning the distance d between the first shell 614 and the second shell 612. Each elastomeric member 402 includes a first end 420 and an opposing second end 422 which are coupled to the respective first and second shells 614, 612.
The set of elastomeric members 400 are configured to absorb a load, such as an impact load, applied to the second shell 612 of the impact protection device 610. For example, each elastomeric member 402 operates mechanically as an extension spring configured to resist a tensile load. As such, and as will be described in detail below, the elastomeric members 402 located opposite to an impact zone on the second shell 612 are configured to stretch as the second shell 612 moves relative to the first shell 614, such as along a direction of a length of the elastomeric member 402. Such stretching can decelerate the second shell 612 relative to the first shell 614 to absorb at least a portion of the impact energy delivered to the second shell 612.
Further, the set of elastomeric members 400 are configured to mitigate or resist rotational impact loads applied to the second shell 612. For example, as provided above, the elastomeric members 400 space the second shell 612 from the first shell 614 by the distance d. As such, the second shell 612 can rotate relative to the first shell 614 and the elastomeric members 402 located opposite to a rotational impact zone on the second shell 612 can resist such rotational loading. Additionally, in response to rotational impact loads, rotation of the second shell 612 can deflect at least a portion of the rotational impact load away from the impact protection device 610. As such, rotation of the second shell 612 mitigates the absorption of the deflected energy by the impact protection device 610.
The impact protection device 610 can be worn by a user on a user's body portion (e.g., head, knee, shoulder, etc.) and be utilized to absorb the energy of an impact. During operation, the set of elastomeric members 400 are configured to stretch between the first shell 614 and the second shell 612 in response to a translation of the second shell 612 relative to the first shell 614 and at a location that is substantially opposite to an impact receiving location of the second shell 612. For example, as the elastomeric members 402 opposite to the impact location stretch, they absorb momentum of the second shell 612 and the energy of the impact, and thus lowering or eliminating the force of the impact felt by the person wearing the device 610.
As illustrated in
As shown in
At this point, the elastomeric members 402 at the opposite location 654 have decelerated the second shell 612 relative to the first shell 614 and the user's head 600. Further acceleration of the first shell 614 and the user's head 600 can continue if the impact load 650 is still in contact with the second shell 612. However, in this case, the elastomeric members 402 opposite the impact location 652 have reduced the velocity differential between the second shell 612 and the first shell 614 and the user's head which, in turn, can mitigate further acceleration of the user's head 600. For example, movement of the user's head 600 be mitigated until the elastomeric members have overcome the inertia of the user's head 600 and the first shell 614.
With the positioning of the impact protection device 610 shown in
With reference to
In one arrangement, each elastomeric member 402 of the set of elastomeric members 404 can be coupled to the first and second shells 614, 612 of the impact protection device 610 via a corresponding elastomer attachment system 700. For example, with reference to
With additional reference to
The first elastomer attachment mechanism 702 can be secured to the first shell 614 via one or more fasteners 712, such as a rivet (e.g., pop rivet), screw, or other securing mechanism. For example, as illustrated in
Returning to
As illustrated, the second elastomer attachment mechanism 704 includes a body section 724, a first attachment section 722, and a second attachment section 724. The second elastomer attachment mechanism 704 defines a first bend location 720 disposed between the first attachment section 722 and the body section 724 and is configured to orient the first attachment section 722 along a first direction 725 relative to the body section 724 (e.g., away from the second shell 612 and toward the first shell 614). Such orientation of the first attachment section 722 allows the elastomer attachment mechanism 704 to mirror the geometry of the inner surface 714 of the second shell 614. The second elastomer attachment mechanism 704 also defines a second bend location 726 disposed between the second attachment section 728 and the body section 724 and is configured to orient the second attachment section 728 along a second direction 727 relative to body section 724 (e.g., toward the second shell 612 and away from the first shell 614). The second attachment section 728 further defines a curved edge 730. Such orientation and geometry of the second attachment section 728 allows the elastomer attachment mechanism 704 to engage the second portion 713 of the elastomeric band 710 as a manufacturer positions the second shell 612 relative to the first shell 614 during a manufacturing procedure.
The second elastomer attachment mechanism 704 can be manufactured from a variety of materials. For example, the second elastomer attachment mechanism 704 can be manufactured from a lightweight metal, such as aluminum, to limit the overall weight of the impact protection device 610. Further, the second elastomer attachment mechanism 704 can be manufactured as having a variety of geometric dimensions. For example, as shown, the second elastomer attachment mechanism 704 can have a width w1 of about 1.0 inches with the first attachment section 722 having a length l1 of about 0.5 inches and the body section 724 and the second attachment section 724 having a length l2 of about 1.75 inches.
Following placement of the second shell 612 onto the first shell 614 and engagement with the second portion 713 of the elastomeric band 710, the second elastomer attachment mechanism 704 can be secured to the second shell 612 via one or more fastener 712, such as a rivet (e.g., pop rivet), screw, or other securing mechanism. In one arrangement, as indicated in
As provided above, use of the elastomer attachment system 700 allows a manufacturer to assemble the impact protection device 610 in a relatively non-labor intensive manner.
During an assembly process, as indicated in element 102, the assembler secures a first portion 711 of an elastomeric member 410 to an outer surface 706 of the first shell 614. For example, with reference to
Next, the assembler can place a first portion 711 of an elastomeric band 710 against an outer surface 706 of the first shell 614 in proximity to the set of openings. For example, the assembler can place top and bottom edges of the elastomeric band 710 between two pairs of the openings defined by the first shell 614. Further, the assembler can align the openings of the first elastomer attachment mechanism 702 with the openings formed in the first shell 614 and can dispose the first elastomer attachment mechanism 702 against the first portion of elastomeric band 710 and against the outer surface of the first shell 614.
Next, the assembler can insert fasteners 712 into the openings 723, 725, 727, and 729 defined by the first elastomer attachment mechanism 702 and the openings formed in the first shell 614 to secure both the elastomeric band 710 and the first elastomer attachment mechanism 702 to the first shell 614. For example, the assembler can use rivets as the fasteners 712 to couple the elastomeric band 710 and the first elastomer attachment mechanism 702 to the first shell 614.
Returning to
Returning to
Returning to
The elastomer attachment system 700, therefore, is configured to lock the elastomeric band 710 between the inner and outer shells 614, 612. Further, the elastomer attachment system 700 simplifies manufacturing relative to conventional manufacturing methods with a relatively low manufacturing cost. With such simplified assembly, worn elastomeric bands 710 can be replaced relatively easily. Additionally, the components of the elastomer attachment system 700 are manufactured from relatively strong but lightweight material, resulting in an impact protection device 610 having a relatively low weight.
As provided above, each elastomer attachment system 700 is configured to secure a corresponding elastomeric band 710 to the first and second shells 614, 612 of the impact protection device 610. In one arrangement, with reference to
As illustrated, the first elastomeric device 750 can be nested within the second elastomeric device 752 such that a first portion of each of the first and second elastomeric devices 750, 752 are secured between the first elastomer attachment mechanism 702 and the inner shell 614 and such that a second portion of each of the first and second elastomeric devices 750, 752 are secured between the second elastomer attachment mechanism 704 and the outer shell 612.
Each of the first and second elastomeric devices 750, 752 can be manufactured from the same elastomeric material but configured with different elastic moduli. For example, the first elastomeric device 750 can be configured with a relatively thinner wall relative to the second elastomeric device 752 and, as such, can have a first, relatively lower elastic modulus compared to a second, relatively higher elastic modulus of the second elastomeric device 752. Further, it is noted that the second elastomeric device 752 is relatively longer than the first elastomeric device 750, which provides an additional length to stretch following impact.
The first and second elastomeric devices 750, 752 can be paired to mitigate different types of impact forces based upon the use of impact protection device 610. For example, an impact protection device 610 used for nonprofessional football players aged 5-7 can include first and second elastomeric devices 750, 752 which can absorb a relatively lower range of impact forces while an impact protection device 610 used for professional football players aged 20-30 can include first and second elastomeric devices 750, 752 which can absorb a relatively higher range of impact forces.
During operation, following application of an impact load to the outer shell 612, as the outer shell 612 travels away from the inner shell 614 at a location opposite to the impact location, the first elastomeric device 750 stretches to decelerate the outer shell 612 relative to the inner shell 614. For relatively large impact loads, as the first elastomeric device 750 reaches the maximum amount of deceleration, the second elastomeric device 752 takes over and stretches between the outer and inner shells 612, 614 to further decelerate the outer shell 612 relative to the inner shell 614.
While various embodiments of the innovation have been particularly shown and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the innovation as defined by the appended claims.
This patent application claims the benefit of U.S. Provisional Application No. 63/421,806, filed on Nov. 2, 2022, entitled, “Impact Protection Device and Method of Assembly,” the contents and teachings of which are hereby incorporated by reference in their entirety.
Number | Date | Country | |
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63421806 | Nov 2022 | US |