JPH072994U - Reversible clock - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a reversible clock with a simple structure that can be smoothly inverted. A reversible timepiece in which a timepiece case is rotatably attached to a base 6 via a ball joint joint 10, and the ball joint joint 10 is a spherical body 1 integrally provided on the timepiece case.
1 and a sphere receiver 12 formed on the base 6 and having a sphere 11 rotatably engaged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention has a time display mechanism such as a clock dial on one of the front and back surfaces of the wristwatch body, and has other functions such as a mirror on the other, and selectively uses both functions by reversing the body. The present invention relates to a reversible timepiece that can be used, and particularly to a structure for mounting a watch case.

[0002]

[Prior art]

 Regarding the mounting structure of the reversible timepiece, there is a structure disclosed in Japanese Utility Model Laid-Open No. 156479/1985.

[0003]

[Problems to be solved by the device]

 The reversible timepiece has a pair of support protrusions on the base and a T-shaped connecting member to which the timepiece main body is attached so as to be reversible, and the connecting member complicates the structure. In addition, since there are three rotating shafts, there is a problem that the rotating operation is heavy and lacks smoothness.

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

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a reversible timepiece having a timepiece on one of the front and back surfaces and a timepiece case having another configuration on the other, which is rotatably attached to a base through a joint. The joint is formed of a ball joint joint, and is characterized by a sphere integrally projecting from the timepiece case and a sphere receiving portion formed on the base and rotatably engaged with the sphere. The sphere receiving portion is composed of a hemispherical receiving portion formed in the upper part of the cavity of the base, and a receiving portion formed below the holding plate fixed to the base.

[0006]

[Action]

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

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of essential parts of a wristwatch having a reversible structure according to the present invention, and FIG. 2 is a fragmentary sectional view showing the structure and operation thereof. The reversible timepiece body 1 has a plastic watch case. The clock case is composed of an upper body 2 and a lower body 5. A glass 4 is fixed on the upper inside of the upper body 2 so as to cover a dial 3 as an analog clock, and a digital is provided on the back side of the lower body 5 of the case. A decorative plate 9 such as a watch or a mirror is fitted and fixed.

The watch body 1 is connected to a base 6 by a ball joint joint 10 as described in detail below. The ball joint joint 10 is attached to the base 6 and a spherical body 11 protruding from one edge of the upper case 2 of the watch case in the band mounting direction via a shaft portion 11a, and the spherical body 11 is rotatable. And a sphere receiver 12 engaged with.

The spherical receiver 12 has a curved top portion 12a, an inner plate portion 12b, and an outer plate portion 12c. Band mounting portions 8 are integrally formed on both sides of the spherical body 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 an opening 12d for the band 7 is formed in the lower part of the outer plate part 12c. A slit 14 through which the shaft portion 11a of the sphere 11 slidably extends is formed between the top portion 12a and the inner side plate portion 12b. Further, a spherical body 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 peripheral shape of the sphere 11, and as will be described later, the sphere 11 inserted from below the sphere receiver 12 is rotatable with the hemispherical receiving portion. And the shaft portion 11a engages with the slit 14 in a rotatable and slidable manner.

Next, FIG. 3 is a vertical cross-sectional view showing the mounting structure of the watch case. To assemble this device, the sphere 11 is inserted into the cavity from the sphere insertion portion 14a and is engaged with the hemispherical receiving portion at the top. In order to prevent the sphere 11 from falling, a pressing plate 13 is inserted from the lower opening as shown in FIG.

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 by pressing in the central portion. A notch 13b for the shaft 11a is formed at the end in the long axis direction. Further, 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 lower opening of the spherical body receiving member 12, the hemispherical receiving portion 13a is engaged with the spherical body 11, the notch 13b is engaged with the shaft portion 11a, and the screw 15 is inserted into the screw hole 12e. It is fixed to the inner wall of the spherical receiver 12 by being screwed. Therefore, the sphere 11 is rotatably supported in the sphere receiver 12 by the pressing plate 13. At this time, the sphere 11 is given an appropriate tightening force so that the sphere can smoothly rotate.

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 joint 10 is lifted and rotated in a vertical plane with the ball 11 as a fulcrum. The end of the case is lifted from the base 6. As shown in FIG. 2, when the shaft portion 11a engages with the upper end portion of the slit 14, the case is rotated 180 degrees about the sphere 11 as a fulcrum, and the lower body 5 is directed to the outside.

Next, the edge of the lower case 5 is pushed, and the watch case is fixed to the base 6 by a fastener not shown. Therefore, the function of a mirror or the like provided on the lower body appears on the surface. It goes without saying that 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 joint is directly provided on the edge portion of the case, the mounting structure is simplified. In addition, the sphere of the ball joint joint is given an appropriate tightening force, and the watch body can rotate smoothly.

[Brief description of drawings]

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

FIG. 2 is a sectional view of an essential part showing the attachment structure of the watch case and its action.

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

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

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

[Explanation of symbols]

 1 Reversible watch 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 Press plate 13a Receiving part 14 Slit

Claims (2)

[Scope of utility model registration request] 1. A reversible timepiece in which a timepiece case having a timepiece on one of the front and back sides and another configuration on the other side is rotatably attached to a base through a joint, wherein the joint is a ball joint joint. The reversible timepiece is characterized in that the ball joint joint is composed of a sphere integrally formed on the watch case and a sphere receiving portion formed on the base and rotatably engaged with the sphere. 2. The spherical body receiving portion according to claim 1, comprising a hemispherical receiving portion formed in an upper portion of the cavity of the base and a receiving portion formed below the holding plate fixed to the base. Reversible clock.