TUBULAR-MEMBER LOCK MECHANISM
First Claim
1. A tubular-member lock mechanism, comprising:
- a cylindrical housing to which a tubular member having an engagement portion at at least one end is mounted; and
a lock member for engaging or releasing the housing and the tubular member,wherein the housing includes a lock-member guide wall turnably guiding the lock member, at least two sliding surfaces wherein a tip portion of the lock member slides accompanied by turning of the lock member, and having different inclinations, and a slit through which one portion of the lock member passes to engage the engagement portion of the tubular member mounted to the housing, andthe lock member, at a standby/lock position, engages the engagement portion formed on an outer periphery of the tubular member passing through at the slit by an elastic force of the lock member, and the lock member, at a release position where a rotational load is applied, spreads by the sliding surfaces having the different inclinations to be released from the engagement portion of the tubular member.
1 Assignment
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Accused Products
Abstract
A tubular-member lock mechanism includes a cylindrical housing to which a tubular member having an engagement portion at one end is mounted, and a lock member for engaging or releasing the housing and the tubular member. The housing includes a lock-member guide wall turnably guiding the lock member, at least two sliding surfaces with different inclinations wherein a tip portion of the lock member slides by turning the lock member, and a slit through which one portion of the lock member passes to engage the engagement portion of the tubular member mounted to the housing. The lock member, at a standby/lock position, engages the engagement portion formed on an outer periphery of the tubular member, and the lock member, at a release position where a rotational load is applied, spreads by the sliding surfaces having the different inclinations releases the engagement portion of the tubular member.
14 Citations
8 Claims
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1. A tubular-member lock mechanism, comprising:
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a cylindrical housing to which a tubular member having an engagement portion at at least one end is mounted; and a lock member for engaging or releasing the housing and the tubular member, wherein the housing includes a lock-member guide wall turnably guiding the lock member, at least two sliding surfaces wherein a tip portion of the lock member slides accompanied by turning of the lock member, and having different inclinations, and a slit through which one portion of the lock member passes to engage the engagement portion of the tubular member mounted to the housing, and the lock member, at a standby/lock position, engages the engagement portion formed on an outer periphery of the tubular member passing through at the slit by an elastic force of the lock member, and the lock member, at a release position where a rotational load is applied, spreads by the sliding surfaces having the different inclinations to be released from the engagement portion of the tubular member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification