| 摘要 |
Plastic parts have press fit connections requiring no glue or sonic welding. In addition to animal collars the retractor mechanism is used in different types of housings for other purposes such as child restraint or pulling a suitcase on wheels. For use with an animal collar the housing has a leash outlet tunnel and a parallel collar strap tunnel, and may have a transverse clip tunnel to receive a clip for detachably mounting the retractor mechanism on the collar.
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