JP2603598Y2 - Reversible watch - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention has a time display mechanism such as a clock dial on one of the front and back surfaces of a wristwatch body, and has another function such as a mirror on the other side. The present invention relates to a reversible timepiece in which functions can be selectively used, and particularly to a watch case mounting structure.

[0002]

2. Description of the Related Art As a mounting structure for a reversible timepiece, there is a structure disclosed in Japanese Utility Model Laid-Open No. 60-156479.

[0003]

The reversible timepiece is provided with a pair of support projections on a base and a reversible timepiece attached to the timepiece body by means of a T-shaped connecting member. Disadvantage. In addition, since there are three rotating shaft portions, there is a problem that the rotating operation is heavy and lacks smoothness.

[0004] The present invention has been made in view of this point,
An object of the present invention is to provide a timepiece mounting structure that can be smoothly inverted with a simple structure.

[0005]

To achieve the above object, according to an aspect of the present invention is "base and the watch case, a ball joint joint
Reversible watch that is rotatably mounted via
Thus, the ball joint is integrally formed with the watch case.
Formed on the base, with the sphere, and the sphere is rotatably engaged
A sphere receiving portion, wherein the sphere receiving portion has a cavity in the base.
In the hemispherical receiving part formed at the top and below it
Hemispherical receiving part formed on the holding plate fixed to the base
And "is provided." Also, "By screw
Holding plate fixed to the base tightens the body rotatably
It has become so.

[0006]

The watch case is lifted vertically from the base with the sphere of the ball joint as a fulcrum, and further rotated about the sphere as a fulcrum, and fixed to the base with its front and back reversed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a main part of a wristwatch having a reversible structure according to the present invention, and FIG. 2 is a cross-sectional view of the main part showing the structure and operation thereof. The reversible watch main body 1 has a plastic watch case. The watch case includes an upper body 2 and a lower body 5, and a glass 4 is fixed to the upper inside of the upper body 2 so as to cover a dial 3 as an analog timepiece.
A decorative plate 9 such as a digital timepiece or a mirror is fitted and fixed to the back side of.

The watch body 1 has a base 6 as described in detail below.
And a ball joint 10. The ball joint 10 is a sphere 1 protruding from one of the edges in the band mounting direction of the upper case 2 of the watch case via a shaft 11a.
1 and a sphere receiver 12 attached to the base 6 and to which the sphere 11 is rotatably engaged.

The sphere receiver 12 has a curved top 12a, an inner plate 12b, and an outer plate 12c. Band mounting portions 8 are integrally formed on both sides of the sphere receiver 12, and holes 8a for engaging the connecting pins of the band 7 are formed. The inside of the sphere receiver 12 is hollow, the lower part of the hollow is open, and the lower part of the outer plate part 12c is formed with an opening 12d for the band 7. Top 12
a and the inner plate portion 12b, the shaft portion 11a of the sphere 11
Are formed to slidably penetrate.
Further, a sphere insertion portion 14a is formed in the inner plate portion 12b so as to communicate with the slit 14. The inner wall of the peripheral portion of the slit 14 is formed in a hemispherical shape corresponding to the outer shape of the sphere 11, and the sphere 11 inserted from below the sphere receiver 12 is rotatable with the hemispherical receiving portion as described later. The shaft portion 11a is engaged with the slit 14 so as to rotate and slide.

Next, FIG. 3 is a longitudinal sectional view showing a mounting structure of the watch case. To assemble the device, the sphere 11
Is inserted into the cavity from the sphere insertion portion 14a and engages with the hemispherical receiving portion at the top. In order to prevent the sphere 11 from dropping, as shown in FIG.
3 is inserted.

FIG. 4 is a plan view of the pressing plate 13, and FIG. 5 is a cross-sectional view thereof. The rectangular pressing plate 13 is made of metal and has a substantially hemispherical receiving portion 13a formed at the center by pressing.
Notch 1 for shaft 11a at its longitudinal end
3b is formed. Screw holes 13c into which the screws 15 are screwed are formed on both sides of the receiving portion 13a. The holding plate 13 is inserted from the opening at the lower part of the sphere receiver 12, the hemispherical receiving part 13 a is engaged with the sphere 11, and the notch 13
b is engaged with the shaft portion 11a, and is fixed to the inner wall of the sphere receiver 12 by screwing the screw 15 into the screw hole 12e. Therefore, the sphere 11 is rotatably supported in the sphere receiver 12 by the holding plate 13. At this time, an appropriate tightening force is applied to the sphere 11, so that the sphere rotates smoothly.

With the above configuration, in order to turn the watch case upside down, the edge of the case opposite to the edge having the ball joint 10 is lifted, and the case is rotated in a vertical plane with the ball 11 as a fulcrum. Is lifted from the base 6.
As shown in FIG. 2, when the shaft portion 11 a engages with the upper end of the slit 14, the case is rotated 180 degrees around the sphere 11, and the lower body 5 is directed outward.

Next, the edge of the lower body 5 is pressed, and the timepiece case is fixed to the base 6 with a fastener (not shown). Therefore, functions such as a mirror provided on the lower body appear on the surface. Needless to say, the reversible watch may be made of a metal watch case.

[0014]

As is apparent from the above description, according to the present invention, since the ball joint is directly provided at the edge of the case, the mounting structure is simplified. Also, a moderate tightening force is applied to the ball of the ball joint, and the watch body can rotate smoothly.

[Brief description of the drawings]

FIG. 1 is a main part plan view showing an embodiment of a reversible timepiece according to the present invention.

FIG. 2 is a sectional view of a main part showing a mounting structure of a watch case and its operation.

FIG. 3 is a longitudinal sectional view showing a mounting structure of the watch case.

FIG. 4 is a plan view of a holding plate.

FIG. 5 is a sectional view of a holding plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reversible timepiece main body 2 Case upper body 5 Case lower body 6 Base 10 Ball joint joint 11 Sphere 11a Shaft part 12 Sphere receiver 13 Pressing plate 13a Receiver part 14 Slit

Claims (2)

(57) [Scope of request for utility model registration] 1. A reversible timepiece in which a base and a watch case are rotatably mounted via a ball joint, wherein the ball joint comprises: And a sphere receiving part in which the sphere is rotatably engaged, the sphere receiving part being a hemispherical receiving part formed on the upper part of the cavity of the base, and the sphere receiving part below the base. A reversible timepiece comprising: a hemispherical receiving portion formed on a fixed holding plate. 2. The sphere is rotatably fastened by the holding plate fixed to the base by a screw.
Reversible watch according to.