JPH0687889U - Reversible clock - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a reversible watch with a simple and compact structure that does not impair the appearance. [Structure] The universal joint mechanism 10 includes a base 6
A horizontal rotation shaft 11 attached to the
And a longitudinal axis 13 integrally formed with the main body 12 and rotatably attached to one edge of the case.

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 projections on the base and the T-shaped connecting member attaches the timepiece body in a reversible manner. Not only is the structure complicated and large, but it also deteriorates the appearance. There is a drawback to say.

The present invention has been made in view of this point, and an object thereof is to provide a reversible timepiece mounting structure having a simple structure, a small size, and an appearance.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is a reversible timepiece in which a timepiece having a timepiece on one of the front and back sides and another configuration on the other is rotatably attached to a base via a universal joint mechanism. In, a universal joint mechanism is formed on the lateral rotation shaft attached to the base, the main body attached to the rotation shaft, and the main body, and is rotatably attached to one edge of the case. And a longitudinal axis that is set. An O-ring is provided between the through hole of the watch case and the longitudinal axis, a projection is provided on the outer surface of the edge of the case, and the projection is engaged with the main body of the universal joint mechanism. The engaging hole is formed.

[0006]

[Action]

 The watch case is lifted vertically from the base about a horizontal rotation axis, further rotated about the longitudinal axis, 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 a wristwatch having a reversible structure according to the present invention, and FIG. 2 is an enlarged cross-sectional view of an essential part thereof. The reversible timepiece body 1 has a rectangular plastic or metal watch case in plan view, A convex curved upper surface 2e is formed at the edge of the watch case in the 12 o'clock and 6 o'clock directions of the dial 3 as an analog timepiece. The watch case is composed of an upper body 2 and a lower body 5. A glass 4 is fixed to the upper inside of the upper body 2 so as to cover a dial plate 3, and a digital watch, a mirror or the like is provided on the back side of the lower body 5 of the case. The decorative plate 9 of is fitted and fixed. Further, a through hole 2a having a circular cross section is formed in the edge portion of the dial of the upper body 2 of the case in the 12 o'clock direction.

The timepiece main body 1 is connected to a base 6 by a universal joint mechanism 10 having an orthogonal axis, as described in detail below. The base 6 has frame portions 6a and 6b which are bent upward in correspondence with both side faces of the watch case in the 12 o'clock and 6 o'clock directions, and covers both side faces of the case, respectively. Mounting legs 8 for connecting the band 7 are projected from the outer ends of the frame portions 6a and 6b, respectively.

The universal joint mechanism 10 is made of metal, is integrally formed with the main body 12 that rotatably contacts one side surface of the case, and is inserted into the through hole 2 a of the upper body 2 of the case. It comprises a longitudinal axis 13. A horizontal rotating shaft 11 is inserted into and fixed to the main body portion 12, and both ends thereof are rotatably fitted and supported by the frame portion 6a of the base. Thereby, the main body 12 is attached to the base 6 so as to be rotatable in the vertical direction. Two O-rings 14 are fitted on the shaft 13 in the two annular grooves 13a, respectively, and the disc spring 16 is brought into contact with the inner step portion 2b of the upper body 2 by the E-ring 15 engaged with the annular groove 13b. Then, the shaft 13 is prevented from coming off. The O-ring 14 ensures the waterproofness of the case.

A projection 2d is provided on the edge of the upper body 2 in the 6 o'clock direction, and a corresponding hole 6c is provided in the frame 6b of the base 6, and the projection 2d snaps into the hole 6c. By fitting, the case is fixed to the base 6.

Two protrusions 2 c having a semicircular cross section are provided at 180 ° intervals in the circumferential direction centering on the through hole 2 a at the edge of the upper body 2, and are arranged on the main body 12 of the universal joint mechanism 10. An engagement hole 12a is formed in the surface that engages with the body side surface, engages with the protrusion 2c, and the timepiece main body 1 is positioned at the front side position and the back side position.

With the above structure, in order to turn the case back upside down, as shown in FIG. 1, the edge of the case in the 6 o'clock direction is pinched with fingers and the case is lifted. As a result, the protrusion 2d projecting from the side surface of the upper body 2 is disengaged from the hole 6c of the frame portion 6b, and is rotated in the vertical plane about the horizontal rotation shaft 11 so that the end portion of the case is fixed to the base 6 Can be lifted more. The watch is rotated 180 degrees about the vertical longitudinal axis 13 and the lower case 5 is directed outwards, as in the side view showing the longitudinal rotation of the watch case of FIG. At that time, a proper rotational torque is obtained by the O 2 ring 14, and the projection 2c engages with the engagement hole 12a, so that the positioning is performed.

Next, the edge of the lower case 5 is pushed to engage the projection 2d with the hole 6c, and the watch case is fixed to the base 6. Therefore, the function of a mirror or the like provided on the lower body 5 appears on the surface.

[0014]

[Effect of device]

 As is clear from the above description, according to the present invention, since the universal joint mechanism is provided directly on the edge of the case, the case does not become large and the appearance is not spoiled. Furthermore, waterproofness is ensured by an O-ring provided on the longitudinal axis, and an appropriate rotational torque is given. Further, when the case is rotated around the longitudinal axis, the projection engages with the engagement hole, so that the case is positioned and the operation is facilitated.

[Brief description of drawings]

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

FIG. 2 is an enlarged cross-sectional view of an essential part showing the attachment structure of the watch case.

FIG. 3 is a side view showing vertical rotation of the watch case.

[Explanation of symbols]

 1 Reversible watch body 2 Case upper body 2a Through hole 2c Small protrusion 5 Case lower body 6 Bases 6a, 6b Frame portion 10 Universal joint mechanism 11 Rotating shaft 12 Main body portion 12a Engagement hole 13 Longitudinal axis 13a Annular groove 14 O-ring

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 via a universal joint mechanism. It has a lateral rotation shaft attached to the base, a main body attached to the rotation shaft, and a longitudinal axis integrally formed with the main body and rotatably attached to one edge of the case. A reversible clock characterized by that. 2. An O-ring is provided between the through hole of the watch case and the longitudinal axis, a protrusion is provided on the outer surface of the edge of the case, and a protrusion is provided on the main body of the universal joint mechanism. The reversible timepiece according to claim 1, wherein a matching engaging hole is formed.