JPH0587590U - Watch dial structure - Google Patents

Abstract

(57) [Abstract] [Purpose] In a watch dial having a pedestal for fixing precious stones, it solves the problems of stone cracking and high cost of the pedestal, which are problems with conventional precious stone fixing technology, and is applied to low-priced products. To provide a watch face plate with a precious stone fixed structure that is cheap in price. [Structure] (1) The pedestal for fixing precious stones is molded from synthetic resin, at least one slit portion is provided in the precious stone entry portion of the pedestal, and the upper surface of the inner circumference of the pedestal has a diameter smaller than the outer diameter of the precious stones. Set. (2) The difference between the height A of the pedestal from the top of the dial and the distance B from the bottom of the watch case glass to the top of the dial (B-
A) is set to be smaller than the pedestal fixing length C to the dial.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a timepiece dial having a pedestal for fixing a precious stone.

[0002]

[Prior Art]

 The conventional watch dial structure having a pedestal for fixing precious stones is mainly the structure shown in FIG. After the precious stone 24 was set on the metal pedestal 22, the precious stone fixing claw 22a of the pedestal 22 was caulked to fix the precious stone, and the pedestal 22 was attached to the dial 23 by adhesion.

[0003]

[Problems to be solved by the device]

 However, according to the above-mentioned technique, when the fixed claw 22a is caulked by the press machine, stone cracking occurs depending on the type of the precious stone, and as a countermeasure, hand caulking work must be used together with mechanical caulking. The situation. Regarding the size of precious stones, even within the same type, there are large variations in size, and the diameters and heights are selected before use. For this reason, the conventional precious stone fixing technology results in a decrease in yield due to stone cracking and an increase in the number of man-hours due to hand caulking, resulting in an overall lack of manufacturing capacity and high cost.

Therefore, the present invention solves such a problem, and an object thereof is to provide a timepiece dial having a pedestal with a precious stone which is simple and easy to manufacture and is low in cost.

[0005]

[Means for Solving the Problems]

 The timepiece dial structure of the present invention is a timepiece dial having a pedestal for fixing precious stones, in which the pedestal is made of synthetic resin and the protrusions for preventing protrusion of precious stones on the upper surface of the inner circumference of the pedestal are smaller than the outer diameter of the precious stones. The difference (BA) between the height A of the pedestal from the top of the dial and the distance B from the bottom of the watch case glass to the top of the dial is smaller than the fixed length C of the pedestal to the dial. It is characterized by having done.

[0006]

Embodiment FIG. 1 is a cross-sectional view of an essential part showing an embodiment of the present invention, in which 1 is a glass fixed to a watch case, 3 is a dial, and 2 is a pedestal for holding and fixing a precious stone 4. On the pedestal 2, a protrusion 2a having a diameter smaller than the outer diameter of the precious stone 4 is arranged on the inner peripheral surface of the upper surface of the precious stone entering portion to form a catching portion for preventing the protrusion after the precious stone 4 is incorporated. Since the pedestal 2 is made of synthetic resin and has the slit portion 2c, the precious stone 4 can be easily inserted, held and fixed. Further, the tolerance of the allowable outer diameter of the incorporated precious stone can be increased by the elasticity of the holding portion.

Here, the difference between the height A of the pedestal 2 from the upper surface of the dial plate and the size B of the roller 1 and the dial plate 3 fixed to the watch case, (B−A), is calculated with respect to the dial plate 3. Set smaller than the fixed length C of the pedestal 2. This is to prevent the pedestal 2 from coming off from the dial plate 3 even if the pedestal 2 floats up due to a drop impact, and thereby to prevent the appearance from being affected. is there. In addition, it is desirable to set the (BA) dimension as small as possible in consideration of the tolerance.

FIG. 2 is an external perspective view of a pedestal 2 showing an embodiment of the present invention, which has a protrusion 2a for preventing the protrusion of precious stones and a slit portion 2c. Further, in order to push and fix the dial plate 3, four dial plate fixing projections 2b are arranged on the outer peripheral portion to set conditions for the tightening margin.

According to this structure, assembling and fixing of the precious stone 4 and the pedestal 2 can be basically performed only by pushing in from above. Moreover, even if the material of the precious stone 4 was easily broken by the conventional technique, for example, such as opal, by fixing it to the elastic holding portion, the defects such as cracking and chipping are significantly reduced. Therefore, a fixed structure that does not specify the precious stone material can be established.

Since the pedestal 2 is a molded product, the pedestal 2 can easily have a complicated shape, and the range of utilization in terms of design can be expanded. For example, it is easy to make a dial ring with precious stones by connecting the pedestal shapes in a ring shape. Further, the precious stone material may be colored synthetic resin.

[0011]

[Effect of the device]

 As described above, according to the present invention, a dial plate having a pedestal with a precious stone which is simple and low in cost is formed by molding the pedestal for the precious stone with a synthetic resin, and devising the shape of the pedestal and the related dimensions at the time of fixing. Can be provided. The practical effect of the present invention is high as a value-added element for low-priced watches.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is an external perspective view of a pedestal 2 showing an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a main portion showing a conventional dial plate structure.

[Explanation of symbols]

 1,21 glass 2,22 pedestal 3,23 dial 4,24 precious stone 2a precious stone fixing protrusion 2b dial fixing protrusion 2c slitting portion 22a fixing claw A height of pedestal from upper face of plate B glass from below Distance to top of dial C Fixed length of pedestal to dial

Claims (2)

[Scope of utility model registration request] 1. A timepiece dial having a pedestal for fixing precious stones, wherein the pedestal is molded from synthetic resin, and at least one slit is provided in the precious stone entry portion of the pedestal, and the inner peripheral upper surface portion of the pedestal is provided. The watch dial structure is characterized by setting a smaller diameter than the outer diameter of the precious stone. 2. The difference (B) between the height A of the pedestal from the upper surface of the dial and the distance B from the bottom of the watch case glass to the upper surface of the dial.
2. The timepiece dial structure according to claim 1, wherein -A) is set to be smaller than a fixed length C of the pedestal with respect to the dial.