JPH0514972U - Clock dial fixed structure - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a dial plate fixing structure with good workability and with little scale deviation regarding dial plate fixing of a timepiece by an eccentric pin dial plate fixing pin. [Structure] The dial foot insertion hole of the plastic base plate, in which the dial fixing pin of the eccentric pin is sub-assembled, is used as the tightening margin for the dial foot.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dial plate fixing structure.

[0002]

[Prior Art]

 Conventional examples will be described with reference to FIGS. 3 and 4 and the following figures.

Reference numeral 1 is a base plate made of a metal plate that forms the base of the movement, 2 is a well-known dial plate, 3 is a dial plate fixing pin made of an eccentric pin, 4 is an outer case, 5 is a back cover, and 6 is a case of the movement. An inner frame 7 for fixing the body, and a receiving ring 7 for supporting the movement fixing. The dial 2 has two dial feet 2a and is inserted into the dial foot hole 1a of the main plate 1 with some play.

The dial fixing pin 3 is sub-assembled to the base plate 1 with a predetermined rotation torque, and can be rotated by a driver groove cut in the head. The dial fixing pin 3 eccentrically has a shaft portion driven into the base plate 1 and a flange portion having a diameter larger than that of the shaft portion. The flange and the hole 1a of the base plate overlap in one direction and do not overlap in the other direction. It is set to a certain dimensional relationship. Therefore, when the hole and the brim do not overlap (3a), insert the dial foot, rotate the dial fixing pin with the screwdriver, press and fix it so that it will bite into the side of the dial foot, and fix the dial. is doing. For fixing the movement, the base plate 1 is held by the receiving ring 7 and the middle frame 6 so as to be sandwiched, and the spring portion of the middle frame is pushed up by the back lid 5 and fixed to the outer case 4. A slight gap 8 is provided between the upper surface of the dial 2 and the parting off of the outer case 4 to prevent damage to the dial. Also, the parting-out part of the outer case is separate from the base part of the outer case, and when it is fixed by caulking, it is prevented from being destroyed by the force applied to it.

[0005]

[Problems to be Solved by the Invention] However, the above-mentioned conventional example has the following problems. First, regarding the operation of the dial set, insert the dial from the dial side of the main plate into the hole of the main plate, then turn the movement over and set the dial on the opposite side of the main plate. You have to rotate the pin. Therefore, during this time, the operator must firmly hold the dial so that it does not float, and the dial for fixing the dial must not rotate in an unstable state where the movement is supported by hand. The workability was poor.

Next, the position correction of the foot insertion hole of the main plate dial will be described. In the case of the conventional example, there is looseness between the dial feet and the bottom plate hole.Therefore, if you press from the side with the dial fixing pin, the center of the dial feet and the center of the main plate hole will be displaced, and the scale will be displaced accordingly. Is generally corrected in advance in the direction opposite to the shift direction. However, since the backlash of the dial feet and the bottom hole changes depending on the respective dimensions, it was difficult to correct the dimensions accurately.

Therefore, the present invention solves the above problems and provides a dial plate fixing structure which is easy to work and has less deviation of the dial plate scale.

[0008]

[Means for Solving the Problems]

 The timepiece dial fixing structure of the present invention has at least a dial having at least one protruding pin on the surface opposite to the display side, a machine frame made of a plastic member without a movement base, and provided on the machine frame. In a watch having a dial fixing pin that is located on the side opposite to the dial of the machine frame and fixed by a rotational position, the projecting pin that penetrates the hole formed in the machine frame is The feature is that it is set to a flat margin.

[0009]

【Example】

 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a sectional view thereof. 1 is a base plate made of a plastic material that forms the base of the movement, 2 is a well-known dial plate, 3 is a dial plate fixing pin made of an eccentric pin, 4 is an outer case, 5 is a back lid, 6 is a middle frame, and 7 is a receiving ring. Show The dial 2 has two dial feet 2 a and is inserted into the dial foot hole 1 a of the main plate 1. The base plate hole 1a is partially provided with a straight portion so as to be a tightening margin with the dial foot 2a. The tightening margin is provided on the dial side of the dial fixing pin on the dial side, in the thickness portion where the entire circumference of the hole 1a is composed of the ground plate, and for the portion below the dial that serves as a backup for the dial feet, The hole 1a is formed with an arc that is the same as or slightly larger than the arc of the hole 1a. This is to facilitate the construction of the mold.

[0010]

[Effect of the device]

 According to the present invention, since the main plate hole and the dial foot are slightly tightened, the dial is fixed when the dial is set, and the dial is pressed when the dial fixing pin is rotated. No need. This makes it easy to set the dial. Also, mechanical assembly becomes possible.

Further, since it is the tightening margin, there is no need to worry about the scale deviation of the dial. In addition, the part where the dial foot is pinched by the dial fixing pin is not the tightening margin, and even if it is loose, the dial position is determined near the base, so even if the foot bends, it is a scale. There is no effect on the gap.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a sectional view of an embodiment of the present invention.

FIG. 3 is a plan view of a conventional example.

FIG. 4 is a sectional view of a conventional example.

[Explanation of symbols]

 1 main plate 2 dial 3 dial fixing pin 4 outer case 5 back lid 6 middle frame 7 receiving ring

Claims (1)

[Scope of utility model registration request] 1. A dial having at least one projecting pin on the surface opposite to the display side, a machine frame made of a plastic member and having a base portion of the movement, and a hole penetrating a hole provided in the machine frame. In a timepiece having a dial fixing pin that is located on the side opposite to the dial of the machine frame and fixed by a rotational position, the dial protruding pin insertion hole of the machine frame is set to a flat interference with the projecting pin. The dial is fixed to the watch structure.