Portable timepiece
First Claim
1. A portable timepiece comprising:
- a case body having a pipe attaching hole;
a winding stem pipe having a case body outside projected portion arranged at an outer portion of the case body and insertingly attached to the pipe attaching hole;
a crown having a crown cylinder portion inserted into the winding stem pipe and removably provided to the case body outside projected portion;
an urging member included in the crown cylinder portion for urging the crown in a direction of separating from the case body; and
holding means having a plurality of communicating grooves along a rotational direction of the crown, a plurality of attaching and detaching through grooves communicated with the communicating grooves and opened to an end face of the case body outside projected portion, a plurality of holding grooves communicated with the communicating grooves, formed in a dead end shape and contiguous to the attaching and detaching through grooves and a plurality of engaging projected portions brought to and from the respective grooves for holding the crown attachably and detachably to and from the case body outside projected portion.
1 Assignment
0 Petitions
Accused Products
Abstract
To provide a portable timepiece having high durability constructed by a constitution capable of promoting operability of attaching and detaching a crown and holding a crown in an unoperated state so as not to rotate the crown unpreparedly. In a winding stem pipe attached to a case body, a crown urged in a direction of separating from the case body by a coil spring (urging member) included in a crown cylinder portion of the pipe is removably provided to a case body outside projected portion of the winding stem pipe. An outer periphery of the case body outside projected portion is formed with a plurality of communicating grooves along a rotational direction of the crown, a plurality of attaching and detaching through grooves communicated to the communicating grooves and opened to an end face of the case body outside projected portion, and a plurality of holding grooves communicated with the communicating grooves and formed in a dead end state and contiguous to the through grooves. A plurality of engaging projected portion brought to and from the respective grooves are provided at a cover portion of the crown covering the case body outside projected portion.
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Citations
12 Claims
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1. A portable timepiece comprising:
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a case body having a pipe attaching hole; a winding stem pipe having a case body outside projected portion arranged at an outer portion of the case body and insertingly attached to the pipe attaching hole; a crown having a crown cylinder portion inserted into the winding stem pipe and removably provided to the case body outside projected portion; an urging member included in the crown cylinder portion for urging the crown in a direction of separating from the case body; and holding means having a plurality of communicating grooves along a rotational direction of the crown, a plurality of attaching and detaching through grooves communicated with the communicating grooves and opened to an end face of the case body outside projected portion, a plurality of holding grooves communicated with the communicating grooves, formed in a dead end shape and contiguous to the attaching and detaching through grooves and a plurality of engaging projected portions brought to and from the respective grooves for holding the crown attachably and detachably to and from the case body outside projected portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A portable timepiece comprising:
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a case back comprising a molded member having a crown inserting hole and integrally having a case body outside projected portion to which the inserting hole is opened; a crown having a crown cylinder portion inserted into the crown inserting hole and provided removably at the case body outside projected portion; an urging member included in the crown cylinder portion for urging the crown in a direction of separating from the case body; and holding means having a plurality of communicating grooves along a rotational direction of the crown, a plurality of attaching and detaching through grooves communicated with the communicating grooves and opened to an end face of the case body outside projected portion, a plurality of holding grooves communicated with the communicating grooves, formed in a dead end shape and contiguous to the attaching and detaching through grooves, and a plurality of engaging projected portions brought to and from the respective grooves for holding the crown attachably and detachably to and from the case body outside projected portion. - View Dependent Claims (9, 10, 11, 12)
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Specification