Strap assembly, strap connector, headgear, headgear assembly, method of forming headgear, tubular connector, patient interface and method of joining straps
FIGS. 1 - 16 D & 66 A- 92 D disclose a large variety of methods of forming the headgear for use in combination with a breathing apparatus including a unitary plastic core within textile casings. In some configurations, the plastic core material penetrates or bursts-through the textile casing of the straps. Some configurations include over moulding, alignment posts, T-joints and joint housings with injection aperture. FIGS. 17 - 65 & 93 A- 94 C disclose a large variety of different headgear arrangements including top strap, front strap, rear strap and pairs of straps extending from the mask above and below the ear to meet behind the ear. FIGS. 95 - 121 B disclose a large variety of connectors connecting the headgear assembly to the mask assembly where the headgear, mask and connector form a closed loop the connector is disengaged with the mask assembly.
1. A strap connector assembly for connecting first and second straps, each of the first and second straps comprising a unitary plastic core within a textile casing, the strap connector assembly comprising:
a first connector portion positioned at an end portion of the first strap;
a second connector portion positioned between end portions of the second strap, the second connector portion comprising a projection of the unitary plastic core protruding through the textile casing of the second strap, the second connector portion configured to align with the first connector portion to facilitate connection of the first and second straps; and
an overmoulded joint that is overmoulded over the first and second connector portions.
2. The strap connector assembly of claim 1 , wherein a thickness of the first connector portion is equal to a thickness of the second connector portion.
3. The strap connector assembly of claim 1 , wherein the first and second connector portions are configured to have a clearance gap disposed therebetween when the first and second connector portions are in alignment to facilitate connection of the first and second straps.
4. The strap connector assembly of claim 1 , further comprising an alignment recess disposed on the first connector portion, the alignment recess being configured to engage a protrusion disposed on an internal surface of a moulding tool to maintain a position of the first connector portion relative to the moulding tool.
5. The strap connector assembly of claim 1 , wherein a thickness of the overmoulded joint is equal to a thickness of the first connector portion and a thickness of the second connector portion.
6. The strap connector assembly of claim 1 , wherein the overmoulded joint contacts the textile casings of the first and second straps.
7. The strap connector assembly of claim 1 , wherein the first and second connector portions are shaped to inter-fit with each other.
8. The strap connector assembly of claim 1 , wherein the first connector portion comprises an extension of the unitary plastic core beyond the textile casing.
9. The strap connector assembly of claim 8 , wherein the first connector portion extends beyond an end of the textile casing.
10. The strap connector assembly of claim 1 , wherein the first and second connector portions are male and female connector portions respectively.
11. The strap connector assembly of claim 1 , wherein the first connector portion or the second connector portion comprise a tab.
12. The strap connector assembly of claim 1 , wherein the first and/or second connector portions have a width that is equal to the width of the unitary plastic core of respective first and second straps.
13. A strap connector assembly for connecting first and second strap portions, each of the first and second strap portions comprising a unitary plastic core within a textile casing, the strap connector assembly comprising:
a joining tab comprising a portion of the unitary plastic core of one of the first and second strap portions and configured to connect the first and second strap portions;
an alignment post protruding from a surface of the joining tab; and
an overmoulded joint that is overmoulded over the joining tab.
14. The strap connector assembly of claim 13 , wherein a thickness of the alignment post is greater that a thickness of the joining tab.
15. The strap connector assembly of claim 13 , wherein a thickness of the alignment post is equal to a thickness of the overmoulded joint.
16. The strap connector assembly of claim 13 , wherein the overmoulded joint is formed from an elastomeric material.
17. The strap connector assembly of claim 13 , further comprising a label formed into a surface of the overmoulded joint.
18. A strap connector for connecting first and second strap portions, the first and second strap portions comprising a unitary plastic core within a textile casing, the strap connector comprising:
a housing having outer cavities disposed at end portions of the housing and configured to receive end portions of the first and second strap portions,
an inner cavity positioned between the outer cavities, and
an injection aperture extending between the inner cavity and the outer cavities, wherein the unitary plastic core of the first and second strap portions extends through the injection aperture.
19. The strap connector of claim 18 , wherein a height of the outer cavities is greater than a height of the inner cavity.
20. The strap connector of claim 18 , wherein a height of the inner cavity is equal to a thickness of the unitary plastic core within the textile casing.