Closure latch
The present disclosure relates generally to closure mechanisms, such as a closure latch device for clamping a band. The closure latch comprises a first and second latch member engaged to pivot relative to each other. Certain embodiments relate to methods of clamping a band. Certain embodiments relate to methods of manufacturing a clamping device.
1. A closure latch comprising:
a band comprising a first portion, a second portion, and a third portion;
a first latch member comprising:
a band attachment portion configured to secure the first portion of the band to the first latch member; and
a first clamping surface; and
a second latch member engaged with the first latch member such that the first and second latch members can pivot relative to each other about a pivot axis, the second latch member comprising a second clamping surface;
wherein the first portion of the band is secured to the band attachment portion of the first latch member while the second portion of the band is positioned between the first and second clamping surfaces, such that tension in the band between the first and second band portions causes the first band portion to pull the first latch member, which in turn causes the first latch member to rotate about the pivot axis towards the second latch member, which in turn causes the first and second clamping surfaces to clamp onto the second band portion at a clamping point, wherein the third portion extends from the first portion of the band to the second portion of the band, and wherein the third portion of the band is positioned between the pivot axis and the clamping point.
2. The closure latch of claim 1 , wherein the band is elastic.
3. The closure latch of claim 2 , wherein the band includes a first band tension marker and a second band tension marker spaced apart along a portion of a length of the band, the first band tension marker and the second band tension marker separated by a tension marker distance that varies as the elastic band is stretched or relaxed; and
a first band tension indicator and a second band tension indicator spaced apart by a tension indicator distance along a portion of the first latch member or the second latch member, wherein a user of the closure latch can stretch the elastic band to a predetermined target tension by adjusting the tension marker distance to be approximately equal to the tension indicator distance.
4. The closure latch of claim 3 , wherein the first or second latch member includes a visual indication, in association with the first and second band tension indicators, of either the predetermined target tension or an application for which the predetermined target tension is recommended.
5. The closure latch of claim 3 , wherein the first and second band tension indicators comprise a subset of a plurality of band tension indicators on the first latch member or the second latch member, wherein each unique adjacent pair of the band tension indicators are spaced apart at a distance that is different than the other unique adjacent pairs of the band tension indicators, each unique adjacent pair of the band tension indicators representing a different band tension produced by stretching the first and second band tension markers to be spaced apart by the distance between the two band tension indicators.
6. The closure latch of claim 5 , wherein the band tension associated with each unique adjacent pair of the band tension indicators is indicated on the first latch member or on the second latch member in association with the unique adjacent pair of band tension indicators corresponding to the band tension.
7. The closure latch of claim 1 , wherein the first clamping surface is positioned on a lower portion of the first latch member.
8. The closure latch of claim 1 , wherein the second clamping surface is positioned on an upper portion of the second latch member.
9. The closure latch of claim 1 , further comprising a loop in the band into which an object can be inserted, the loop extending from the first portion of the band to the second portion of the band.
10. The closure latch of claim 1 , wherein the band attachment portion comprises a support around which the first portion of the band can be secured by forming a loop in the first portion of the band.
11. The closure latch of claim 1 , further comprising:
a latch resistance element;
wherein the first latch member can rotate in a first direction with respect to the second latch member about the pivot axis to a closed position in which the first and second clamping surfaces clamp together;
wherein the first latch member can rotate about the pivot axis in a second direction with respect to the second latch member to an open position wherein the first and second clamping surfaces do not clamp together; and
wherein the latch resistance element is configured to hold the first latch member in the open position with respect to the second latch member, the latch resistance element configured to release the first latch member from the open position when a force tending to move the first latch member to the closed position is greater than or equal to a breakaway force associated with the latch resistance element.
12. The closure latch of claim 11 , wherein the latch resistance element is positioned on at least one of the first latch member and the second latch member.
13. The closure latch of claim 12 , wherein the latch resistance element comprises one or more protrusions extending from one of the first and second latch members, the one or more protrusions configured to engage with the other of the first and second latch members when the first latch member is in the open position with respect to the second latch member.
14. The closure latch of claim 13 , wherein the protrusions frictionally engage with the other of the first and second latch members when the first latch member is in the open position with respect to the second latch member.
15. The closure latch of claim 11 , wherein:
the first latch member further comprises a band-routing opening extending through a portion of the first latch member; and
the second latch member further comprises:
a first pair of engagement portions releasably engaged with a corresponding pair of engagement portions of the first latch member in a manner that permits said rotation of the first latch member with respect to the second latch member, such that the pivot axis is defined by the engagement of the first pair of engagement portions with the corresponding pair of engagement portions of the first latch member;
a second pair of engagement portions configured to releasably engage with the corresponding pair of engagement portions on the first latch member; and
a band-routing opening extending through a portion of the second latch member;
wherein the opening extending through the portion of the first latch member and the opening extending through the second latch member are substantially aligned with respect to each other when the pair of engagement portions of the first latch member are engaged with the second pair of engagement portions of the second latch member.
16. The closure latch of claim 15 , wherein the second latch member comprises a base with a pair of sidewalls attached to the base, the first and second pairs of engagement portions positioned on the sidewalls.
17. The closure latch of claim 1 , wherein at least one of the first and the second clamping surfaces is convex in at least one dimension with respect to the other of the first and second clamping surfaces.
18. The closure latch of claim 1 , wherein the first latch member comprises a proximal portion that extends upwardly from the second latch member when the first latch member is in the closed position with respect to the second latch member.
19. The closure latch of claim 1 , further comprising a stop positioned on at least one of the first and the second latch members, the stop configured to stop rotation of the first latch member with respect to the second latch member in the first direction when the first latch member is in the closed position.