An apparatus and method are provided for hermetically sealing locking components of a retractor wherein the retractor has a spool shaft extending therefrom. An open-ended housing has a base and defines an opening through the base into an interior of the housing. The base of the housing is mounted to
An apparatus and method are provided for hermetically sealing locking components of a retractor wherein the retractor has a spool shaft extending therefrom. An open-ended housing has a base and defines an opening through the base into an interior of the housing. The base of the housing is mounted to the retractor with the spool shaft accessible via the opening. The locking components are arranged within the housing. A sealing member is positioned about the opening to form a hermetic seal between the spool shaft and the opening. A cover is hermetically attached to the open end of the housing.
대표청구항▼
1. An apparatus for sealing locking components of a retractor, wherein the locking components cooperate with a spool shaft extending from a rotatable spool of the retractor to selectively lock rotation of the spool, and wherein the spool shaft rotates with the rotatable spool, the apparatus comprisi
1. An apparatus for sealing locking components of a retractor, wherein the locking components cooperate with a spool shaft extending from a rotatable spool of the retractor to selectively lock rotation of the spool, and wherein the spool shaft rotates with the rotatable spool, the apparatus comprising: an open-ended housing having a base defining a first opening therethrough into an interior of the housing, the base of the housing mounted to the retractor with the spool shaft accessible via the first opening, the locking components arranged within the interior of the housing,a first sealing member extending about and engaging a periphery of the first opening and also extending about and engaging a periphery of the spool shaft, the first sealing member blocking ingress of moisture and particles to the locking component, anda cover hermetically attached to the open end of the housing. 2. The apparatus of claim 1 wherein the housing and the cover are each formed of a polymer. 3. The apparatus of claim 1 wherein the locking components are configured to cooperate with the spool to form at least one of an emergency locking retractor and an automatic locking retractor. 4. The apparatus of claim 1 wherein the housing defines a first channel extending into the base of the housing about the first opening, the first channel sized to receive and retain therein the first sealing member, and wherein the first sealing member is positioned within the first channel such that the first sealing member engages the housing about the first opening and also engages the spool shaft about the spool shaft when the housing is mounted to the retractor, the first sealing member thereby forming a seal between the first opening of the housing and the spool shaft to block the ingress of moisture and particles to the locking components. 5. The apparatus of claim 4 wherein the first channel extends into one of an inner surface and an outer surface of the base of the housing about the first opening. 6. The apparatus of claim 1 wherein the retractor further includes a frame sidewall through which the spool shaft extends and to which the base of the housing is mounted, and a locking bar movably mounted to the frame sidewall and engageable with the spool to lock rotation of the spool relative to the frame sidewall, and wherein the locking components control a position of the locking bar to selectively lock the spool relative to the frame sidewall,and wherein the base of the housing further defines a second opening therethrough, separate from the first opening, such that one end of the locking bar is accessible through the second opening when the base of the housing is mounted to the frame sidewall,and wherein one of the locking components is mounted to the one end of the locking bar,and wherein the apparatus further comprises a second sealing member extending about and engaging a periphery of the second opening and also extending about a periphery of the locking bar such that the second sealing member forms a seal between the one of the locking components and the second opening to block the ingress of moisture and particles to the locking components. 7. The apparatus of claim 6 wherein the housing defines a second channel extending into the base of the housing about the second opening, the second channel sized to receive and retain therein the second sealing member, and wherein the second sealing member is positioned within the second channel such that the second sealing member engages the housing about the second opening and also engages the one of the locking components mounted to the one end of the locking bar when the housing is mounted to the retractor, the second sealing member thereby forming the seal between the second opening of the housing and the one of the locking components to block the ingress of moisture and particles to the locking components. 8. The apparatus of claim 7 wherein the second channel extends into one of an inner surface and an outer surface of the base of the housing about the second opening. 9. The apparatus of claim 6 wherein the locking components are configured to cooperate with the spool and with the locking bar to form at least one of an emergency locking retractor and an automatic locking retractor. 10. A locking retractor comprising: a frame defining two opposing sidewalls,a rotatable spool extending between the two sidewalls,a spool shaft extending from and rotating with the spool, one end of the spool shaft extending through one of the sidewalls,an open-ended housing having a base defining a first opening therethrough into an interior of the housing, the base of the housing mounted to the one of the sidewalls with the spool shaft accessible via the first opening of the open-ended housing,one or more locking components arranged within the interior of the housing, the one or more locking components configured to cooperate with the spool shaft to selectively lock rotation of the spool relative to the frame,a first sealing member extending about and engaging a periphery of the first opening and also extending about and engaging a periphery of the spool shaft, the first sealing member forming a seal to block ingress of moisture and particles to the one or more locking components, anda cover hermetically attached to the open end of the housing with the one or more locking components contained within the interior of the housing. 11. The retractor of claim 10 wherein the one or more locking components are configured to cooperate with the spool shaft to form at least one of an emergency locking retractor and an automatic locking retractor. 12. The retractor of claim 10 further comprising: at least one ratchet wheel mounted to and rotatable with the spool,a locking bar mounted between the two opposing sidewalls of the frame, the locking bar movable relative to the frame between a first position in which the locking bar engages the at least one ratchet wheel and a second position in which the locking bar does not engage the at least one ratchet wheel, one end of the locking bar extending through the one of the sidewalls, wherein the base of the open-ended housing defines a second opening therethrough separate from the first opening, and the one end of the locking bar is accessible via the second opening, and wherein one of the one or more locking components is mounted to the one end of the locking bar, anda second sealing member positioned to extend about and engage a periphery of the second opening and to also extend about the locking bar such that the second sealing member forms a seal between the one of the one or more locking components and the second opening to block ingress of moisture and particles to the one or more locking components, wherein the one or more locking components control the locking bar between the first and second positions thereof to selectively lock the spool relative to the frame sidewall. 13. The apparatus of claim 12 wherein the locking components are configured to cooperate with the spool and with the locking bar to form at least one of an emergency locking retractor and an automatic locking retractor. 14. The apparatus of claim 10 wherein the housing and the cover are each formed of a polymer.
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