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Adjustable tightening crown

An adjustable crown technology, used in clocks, mechanically driven clocks, spring ratchet mechanisms, etc., can solve problems such as inappropriate crown tightening and unfavorable case appearance.

Active Publication Date: 2021-04-09
MECO S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method used to mount these crowns is not suitable for screwing down crowns with engravings or designs on their end faces, such as logos, trademarks or similar marks or protrusions, or for crowns that are not in the shape of a rotation crown, while it is desirable for the user or at least for after-sales service to be able to adjust the angular index of such a crown in the screwed-in position according to the desired specific orientation
[0008] In fact, known mounting methods do not usually allow the crown to be brought into a defined orientation relative to the case after screwing down, which may be detrimental to the aesthetics of the case

Method used

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  • Adjustable tightening crown
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Examples

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Embodiment Construction

[0033] The invention relates to an adjustable screw-down crown 200 for a watch case 100 . This watch case 100 generally comprises a middle part 9 through which at least one case 90 passes for receiving an adjustable screw-down crown 200 .

[0034] The adjustable screw-down crown 200 is arranged to cooperate with the case 90 and to insert it in a sealed manner. Adjustable screw-down crown 200 includes pattern 19 on or near end face 18 .

[0035] Such an adjustable screw-down crown 200 comprises, on the one hand, a subassembly 20 comprising a crown 1 manipulable by the user and comprising a pattern 19, and, on the other hand, a tube 7, said subassembly and The tubes are moved axially relative to each other in the axial direction D. The tube 7 is arranged to be screwed or driven in the axial direction D into the housing 90 .

[0036] According to the invention, the subassembly 20 comprises a fixed hollow shaft 2 rigidly connected to the crown 1 , extending in the axial directi...

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Abstract

An adjustable tightening crown (200) for a watchcase (100), comprising a subassembly (20) comprising a steering body (1) comprising a pattern (19) and carrying an axially fixed hollow shaft (2) comprising a first thread (21) and comprising a tube (7) axially insertable into a watchcase housing (90) and comprising an angular indexing device (75), the invention relates to a sub-assembly for a crown body (1) mounted on a tube (7), said sub-assembly comprising angular indexing means (75) arranged to cooperate with complementary angular indexing means (75) comprised by an insert (4) mounted on the tube (7) to determine an angular orientation of the crown body (1) relative to the tube (7) relative to the axial direction (D), said sub-assembly and said tube moving axially, the insert (4) comprising a first thread (41) arranged to cooperate with a first thread (21) of a fixed hollow shaft (2), screwing the crown body (1) into the tube (7).

Description

technical field [0001] The invention relates to an adjustable screw-down crown for a watch case comprising a middle part having at least one housing extending all the way therethrough for receiving said adjustable screw-down crown , the adjustable screw-down crown arranged to cooperate with said housing and insert it in a sealed manner, said adjustable screw-down crown comprising a pattern on or near the end face, said adjustable screw-down crown The crown comprises, on the one hand, a subassembly comprising a crown manipulable by the user and comprising said pattern, and, on the other hand, a tube arranged to be screwed into or Driven into the housing, the subassembly and the tube are axially movable relative to each other in an axial direction. [0002] The invention also relates to a watch case comprising a middle part with at least one case extending all the way through for receiving such an adjustable screw-down crown. [0003] The invention also relates to a timepiece,...

Claims

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Application Information

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IPC IPC(8): G04B37/10
CPCG04B37/103G04B37/081G04B3/041
Inventor R·蒂里R·玛柯斯
Owner MECO S