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Portable watch

A portable, crown-based technology used in clocks, clocks, winders, instruments, etc.

Inactive Publication Date: 2005-04-27
SEIKO INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the technology of preventing the crown from turning freely by the engagement of the threads cannot be applied to this type of portable watch.

Method used

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  • Portable watch
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] (first embodiment)

[0025] will refer to Figures 1 to 4 The first embodiment of the present invention is explained.

[0026] exist figure 1 In , reference numeral 10 denotes a wrist watch as a portable watch. Such as figure 2 with 3 As shown in , the wrist watch 10 accommodates a dial 12, a watch movement 13 not shown in the figure, etc. in a case assembly 11 of the watch. As the watch movement 13 , it is used in a manual winding type, an automatic winding type, or a combination of a manual winding and an automatic winding type of a mechanical watch movement using a mainspring as a driving source. Note that other than these types, a watch movement of a type capable of selecting and switching between a digital display and an analog display as a time display on the dial 12 and the like can be applied.

[0027] Such as figure 2 with 3 As shown in , by mounting a liquid-tight watch glass 15 on the front surface constituting one surface in the thickness direction...

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PUM

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Abstract

Provided is a portable watch in which a crown can be held so as not to be turned carelessly utilizing engagement of screws without being restricted by a function of a watch movement, durability is improved, and a screw lock operation for the crown is light. The present invention is premised on a portable watch in which a crown, which is connected to a winding stem transmitting a turning force to a watch movement in a case band, is engaged with a male screw section of a pipe attached to the case band, whereby a crown is held so as not to be turned. The crown includes: a crown shaft that moves the winding stem in association with the crown shaft; and a crown head that turns this shaft. A turning force receiving section is provided on a peripheral part of a shaft end of a crown shaft arranged outside the pipe. A female screw section and a turning force transmission section are provided in the crown head. The female screw section is detachably engaged with the male screw section. The turning force transmission force is detachably fitted into the turning force receiving section following movement along an axial direction of the crown shaft in a state in which the engagement of both the screw sections are released.

Description

technical field [0001] The present invention relates to a portable watch in which a crown is controlled so as not to turn freely by engagement of threads. Background technique [0002] Conventionally, the crown used to operate the watch movement installed in the watch case is a separate part and includes the crown shaft part and the crown head, the former makes the movement of the watch move in cooperation with the crown shaft part and the crown part are integrally formed with the shaft portion. The crown shaft portion is inserted into a winding stem sleeve fixed to the watch case, and the crown head is fitted into the sleeve end of the winding stem sleeve outside the watch case. [0003] There is known a portable watch in which, in order to prevent the crown from being turned at will, a male thread portion is formed on the outer edge of the sleeve end of the winding stem sleeve outside the watch case, and a female thread portion is formed on the crown In the head, detacha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B37/10G04B3/04G04B29/00
CPCG04B37/103G04B3/043
Inventor 小庄司秀昭武田维一
Owner SEIKO INSTR INC