Reversible case
The innovative mechanism for reversible watch cases addresses design constraints and visibility issues by allowing rotation without rounded corners and eliminating the need for a cage, thereby enhancing design freedom and visibility.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-30
AI Technical Summary
Conventional reversible watch cases face design constraints due to the need for rounded corners to avoid rotational interference and reduced dial size due to the presence of a cage structure, limiting design freedom and visibility.
A mechanism with holes and grooves on the case and a movable arm allows the case to rotate without rounded corners, eliminating the need for a cage and enlarging the dial area.
Enhances design freedom by eliminating corner constraints and improves dial visibility by securing a larger display area.
Smart Images

Figure 0007837125000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a mechanism for the entire case that enables the case to be reversed while the watch is worn on the wrist.
Background Art
[0002] Several structures have been proposed for this type of watch. Patent document 1 (FR712868A) discloses a case mechanism in which a lateral groove (16) is formed in the outer casing member (11), and when reversing the case, the crown side of the case is lifted and slid laterally, and the reversal operation is performed by rotating it around an axis (8). .
[0003] Furthermore, Patent Document 2 (CH162787A) discloses a case mechanism consisting of an outer casing (a), a cage (f), and a case (m). The document describes a structure in which, when inverting the case, the cage (f) is lifted, the case (m) is inverted around the axis (q), and then the cage (f) is pushed into the outer casing (a) to complete the inversion operation. .
Prior Art Documents
Patent Documents
[0004]
Patent Document 1
Patent Document 2
Summary of the Invention
Problems to be Solved by the Invention
[0005] Conventional reversible cases are relatively easy to reverse and have received high praise from users. However, there was still room for improvement in terms of appearance and visibility. [[ID=4!6]].
[0006] In the watch disclosed in Patent Document 1, the axis of rotation for the reversal operation is located at the end of the case, so it is necessary to provide a rounded chamfer on the corners of the case to avoid interference during rotation. As a result, it is difficult to give the corners distinctive features in terms of the design of the case's appearance, which creates a problem of constraints on the design. .
[0007] Furthermore, in the watch disclosed in Patent Document 2, a cage (f) is an essential component as a case reversal mechanism, which reduces the display area and thus the size of the dial. As a result, it had the problem of reduced legibility of the time. .
Means for Solving the Problems
[0008] The watch according to the present invention has holes (14) and grooves (15) Equipped with above and below the case (12, 13), and the collar (8) of the shaft (6) The aforementioned is in the groove (15) Having an engaging configuration . An arm (9) is coupled to the shaft (6), and on the arm (9) established a shaft (11) is along the groove (4) of the grooved member (3) on the base (1) Fixed and It is movable. This configuration allows the cases (12, 13) to move along the groove (4) while being offset relative to the base (1). .
[0009] In the present invention, when the cases (12, 13) are pulled, the arm (9) moves along the groove (4), and the shaft (11) coupled to the arm (9) moves away from the base (1). As a result, the shaft (6) incorporated in the cases (12, 13) When rotating the case around the center from the end of the cases (12, 13) farthest from the hole (14) big it is possible to secure an offset amount. As a result, it is no longer necessary to round the corners of the case to avoid rotational interference, as was the case before, greatly increasing the design freedom of the corners in the case's exterior. .
[0010] Also, the grooved member (3) By arranging the components at the top and bottom of the case, a cage structure is not required, and a wider dial area can be secured. As a result, the dial is enlarged, which improves visibility. .
Brief Description of the Drawings
[0011] [Figure 1] Upper perspective view of the base (1) [Figure 2] Upper perspective view and front view of the member (3) with a groove [Figure 3] Front view and side view of the shaft (6) [Figure 4] Front view, side view, and upper perspective view of the component where the arm (9) and the shaft (11) are coupled [Figure 5] Exploded projection view of the component assembled with the case components (12, 13) [Figure 6] Overall view of the case combining the above components [Figure 7] Diagram showing the rotation of the mechanism
Modes for Carrying Out the Invention
[0012] Examples of the case according to the present invention are shown in FIGS. 6 and 7. In FIG. 6, the case is configured by fitting the collar (8) of the shaft (6) coupled to the arm (9) into the groove of the case (12, 13) and incorporating the shaft (11) coupled to the arm into the groove (4).
Explanation of Reference Numerals
[0013] 1 Base 2. Counterbore holes for fastening grooved components. 3. Grooved member 4. Grooves of grooved members 5. Screw holes for fastening grooved components. 6 axes (6) 7. The axis to which the axis (6) and the arm (9) are connected. 8-axis (6) flange 9 Arms 10 The shaft (6) is connected to a hole that is coaxial with the hole (14) in the case (12,13). 11 Shaft incorporated into groove (4) 12. Case components into which the movement is incorporated. 13. Case components that function as a back cover but do not house the movement. 14 Holes for rotating the case 15. Grooves to prevent the case from falling out. 16 Screw holes for joining cases (12, 13)
Claims
1. A clock comprising a base (1), a grooved member (3) coupled to the base (1) and having a groove (4), an arm (9) having a shaft (11) that engages with the groove (4) and having a hole (10), and a case (12, 13) having a shaft (6) that engages with the hole (10) and incorporating a movement, A watch characterized in that, by pulling the case (12, 13), the shaft (11) and hole (10) of the arm (9) move away from the base (1) along the groove (4) of the grooved member (3), allowing the case (12, 13) to rotate around the shaft (6), and by inverting and then pushing the case (12, 13), the watch can be used with the case (12, 13) turned inside out while still being worn on the wrist.
2. The clock according to Claim 1, characterized in that the shaft (6) of the case (12, 13) is provided with a flange portion (8) so that its degree of freedom in the axial direction is restricted and the shaft (6) is prevented from falling out of the case (12, 13).
3. The groove (4) formed in the grooved member (3) is formed in a V-shape, and is configured such that the distance between the cases (12, 13) and the base (1) changes when the cases (12, 13) are pulled. The position of the shaft (6) when the cases (12, 13) are pulled is set by adding the amount of vertical movement along the groove (4) to the straight-line distance between the hole (10) provided in the arm (9) and the shaft (11). As a result, the positional relationship is greater than the distance from the center of the hole (14) of the cases (12, 13) to the end of the cases (12, 13), and the groove (4) is arranged so that the cases (12, 13) can rotate, as described in Claim 1 or 2.
Citation Information
Patent Citations
The wrist watch body
JP1985156480U
Dial plate free to invert timepiece
JP1995280956A
reversible watch
JP2006522322A
Reversible display apparatus
JP2007303843A
wristwatch.
CH162787A