Deformable lace guides for automated footwear platform
Systems and apparatus related to footwear including a modular lacing engine are discussed. In this example, the lace guide is deformable to assist in facilitating automated lace tightening. The lace guide can include a middle section, a first extension and a second extension. In this example, the lace guide can be configured to define a first route for a lace cable, the first route including receiving the lace cable along the first incoming lace axis and expelling the lace cable along the first outgoing lace axis. In this example, the lace guide can also deflect, in response to tension on the lace cable, resulting in defining a second route for the lace cable, the second route including receiving the lace cable along a second incoming lace axis and expelling the lace cable along a second outgoing lace axis.
1. A footwear apparatus comprising:
a footwear upper including a lacing architecture routing a lace cable along a medial side or a lateral side of the footwear upper, the lacing architecture including a plurality of deformable lace guides, each deformable lace guide of the plurality of deformable lace guides includes a straight tubular incoming extension and a straight tubular outgoing extension coupled to a tubular middle section that transitions between an open state and a closed state; and
a lacing engine including a drive mechanism to adjust the effective length of the lace cable between a first length and a second length, wherein the first length is longer than the second length;
wherein the plurality of deformable lace guides transition to the open state in response to the lacing engine adjusting the lace cable to the first length, and the plurality of deformable lace guides transition to the closed state in response to the lacing engine adjusting the lace cable to the second length; and
wherein the plurality of deformable lace guides in the open state define a first route for the lace cable, and the plurality of deformable lace guides in the closed state define a second route for the lace cable, wherein the first length of the lace cable in combination with the plurality of deformable lace guides operate to induce an initial tension on the lace cable in the open state to define the first route.
2. The footwear apparatus of claim 1 , wherein the first route includes the lace cable traversing a first path between adjacent deformable lace guides that does not align with an incoming axis along the incoming extension or an outgoing axis along the outgoing extension.
3. The footwear apparatus of claim 1 , wherein the second route includes the lace cable traversing a second path between adjacent deformable lace guides that aligns with an incoming axis along the incoming extension or an outgoing axis along the outgoing extension.
4. The footwear apparatus of claim 1 , wherein the plurality of deformable lace guides apply a first tension on the lace cable when the lace cable is adjusted to the first length by the lacing engine.
5. The footwear apparatus of claim 4 , wherein the plurality of deformable lace guides apply a second tension on the lace cable when the lace cable is adjusted to the second length by the lacing engine, wherein the second tension is greater than the first tension.
6. The footwear apparatus of claim 1 , wherein the lacing architecture includes deformable lace guides distributed in an alternating pattern routing the lace in a wave pattern that cycles up and down along a medial or lateral side of the footwear upper, wherein the medial side and the lateral side of the footwear upper are separated by a central portion.
7. The footwear apparatus of claim 6 , wherein the alternating pattern routing the lace does not cross the central portion of the footwear upper, wherein the central portion includes a gap between the medial side and the lateral side of the footwear upper.
8. The footwear apparatus of claim 6 , wherein the alternating pattern of deformable lace guides routes the lace through at least 2 cycles of the wave pattern along the medial or lateral side of the footwear upper.
9. The footwear apparatus of claim 6 , wherein the wave pattern is a sinusoidal wave pattern when the plurality of deformable lace guides are in the closed state.
10. The footwear apparatus of claim 1 , wherein each deformable lace guide of the plurality of deformable lace guides includes a middle section joining the incoming extension and the outgoing extension; and
wherein the middle section includes a first modulus of elasticity, the incoming extension includes a second modulus of elasticity, and the outgoing extension includes a third modulus of elasticity.
11. The footwear apparatus of claim 10 , wherein the second modulus of elasticity is substantially the same as the third modulus of elasticity resulting in the incoming extension and the outgoing extension flexing substantially the same amount in response to a tension on the lace cable.