JPS592556Y2 - Waterproof structure of mobile watch case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waterproof structure for the glass edge of a portable watch in which the glass edge opens and closes using a rotating support as a fulcrum.

In a conventional watch in which the glass edge opens and closes using a rotating support as a fulcrum, such as a watch for the blind, the gasket 14 in contact with the glass edge 12 is attached to the outer periphery 11 of the body 11, as shown in FIG.
Since it is guided by a and consists of two parts, Gappatsukin 14 and 15, there are problems as described in the bullet points below.

(2) The planar shape of the body 11 and glass rim 12 is large, which makes it difficult to create a design that is desirable.

■ In terms of performance, since the seal 14 is located in the outer diameter direction, the outer diameter of the seal becomes larger.If the tightening margin is the same, the repulsive force of the seal increases, and at the same time, the axis 16 that opens and closes the glass edge 12 and the outer diameter of the seal become larger. The distance S becomes shorter, and from this point as well, the repulsive force of the packing becomes unstable.

Furthermore, it is difficult to increase the depth of the trunk groove of the packing 14 due to processing, and to ensure the fixing stability of the packing, the packing cannot be sufficiently high, resulting in a large repulsive force.

■ Since there are two packings 14 and 15, the manufacturing cost of the packing increases and at the same time the machining of the body 11 becomes complicated.

The present invention eliminates these drawbacks and provides a new waterproof structure for the glass rim of a watch, in which the glass rim opens and closes using a rotating support as a fulcrum. Basically, an integral gasket having two contact points that contact the bottom of the dial independently with seam allowances is guided by the inner circumferential surface of the body.

The present invention will be explained in detail below with reference to an embodiment shown in the drawings.

FIG. 2 shows an embodiment of the present invention, and is a cross-sectional view of the glass edge engaged with the barrel. An integrated gasket 24 is attached to the lower surface 22a of the glass edge 22 and the lower surface 23a of the dial 23 and has tightening allowances A and B independently. Cylinder inner peripheral wall portion 21a provided on the upper side of the cylinder inner circumference
The bottom surface 24 of the packing is not arranged so as to be guided by the
b is guided and made into a coefficient by the packing ground plane 21 b on the inner circumferential side of the shell which continues to the inner circumferential wall portion 21 a of the shell.

Next, we will describe the characteristics of this structure when the glass edge is opened and closed.

When the glass edge 22 in FIG. 2 is engaged with the shell 21, it is waterproof due to the tightening allowances A and B. When the glass edge 22 is open, the tightening allowance A disappears, but due to the tightening allowance B. Dial board 2
3 lower surface 23a and inner circumferential packing ground plane 21b of the shell
It has waterproof properties between.

FIG. 3 shows another embodiment of the present invention, in which the inner circumferential surface 34C of the gasket 34 and the outer circumferential surface 33b of the dial plate are tightened in contrast to the structure of the previous embodiment. The seal 34 is guided by three surfaces: an inner wall 31a of the body 31, a ground plane 31b following the inner wall, and an outer circumferential surface 33b of the dial 33.

In this embodiment, due to the tightening margin C, the outer circumferential surface 33 b of the dial 33 and the body 3 are connected regardless of whether the glass edge 32 is opened or closed.
It has waterproof property between the inner peripheral wall 31a of No. 1 and the inner peripheral wall 31a of No. 1.

The functions of the tightening allowances A and B are the same as in the embodiment shown in FIG.

The above is the basic configuration of the present invention.

Practical implementation of the present invention eliminates the need for the packing guide wall 11b of the shell 11 shown in FIG. 1, resulting in the following effects.

■ The planar shape of the body and glass rim can be made smaller, resulting in a more desirable design.

■ In terms of performance, since the packings 24 and 34 shown in Figures 2 and 3 are located in the inner diameter direction, the outer diameter of the packing becomes smaller, and when the seam allowance is the same, the repulsive force of the packing becomes smaller, and at the same time, as shown in Fig. 1. The distance S between the rotating shaft and the outer diameter of the packing is increased, and the repulsive force of the packing is stabilized.

Furthermore, since the processing is simple, the ground plane of the packing on the shell can be provided at a deep position from the upper surface of the shell, the packing can be made high while securing the fixing stability of the packing, and the packing repulsive force can be reduced.

■ Since the packings 14 and 15 shown in Fig. 1 can be integrated, the packing manufacturing cost is reduced, and at the same time,
Machining the body will also be easier.

Furthermore, the structure in which the gasket is arranged so as to be in contact with the outer periphery of the dial with an interference margin has the following effects.

■ Since the gasket 34 shown in Fig. 3 contacts the bottom surface 33a of the dial plate and the outer peripheral surface 33b of the dial plate with tightening allowances B and C,
Regardless of whether the glass edge 32 is open or closed, the dial 33 and body 31
There are two waterproof parts between them, and the waterproof property is superior to that of the waterproof structure using only the tightening margin B shown in FIG.

In the present invention, the glass, glass rim, and packing can be not only circular but also non-circular.

The opening/closing retaining portion is removably attached to the body by a retaining member such as a spring bar attached to the edge of the glass.

The inner periphery of the seal may be guided by the outer periphery of the dial holder ring, or a wall may be provided on the body as usual.

The hardness of the padding is preferably Hs 40 to 50 from the point of view of repulsion, and from the viewpoint of appearance, it is preferable to select the color tone of the padding to match the dial.

Since blind people's watches and the like are used with fingers, it is preferable to use rubber with good abrasion resistance such as polyurethane rubber or neoprene rubber.

As mentioned above, the present invention not only improves the appearance of the design, but also reduces costs through a streamlined structure and improves functional quality such as waterproofness, which has overall high practical effects. It is something that is useful.

[Brief explanation of drawings]

FIG. 1 shows a longitudinal cross-sectional view of the glass edge of a portable watch in which the glass edge opens and closes using a conventional rotating support as a fulcrum. FIG. 2 shows a longitudinal cross-sectional view of the glass edge of one embodiment of the present invention, with the glass edge engaged with the barrel. FIG. 3 shows a longitudinal cross-sectional view of the glass edge of another embodiment of the invention, with the glass edge engaged with the barrel. 11.21.31...Side body, 12,22.32
...Glass edge, 23゜33 ...Dial board, 14, 15, 24.34 ...Packskin, 16
゜26...Glass edge rotation support part, 27...
...Glass.

Claims (2)

[Scope of utility model registration request] (1) In a portable watch in which the glass edge opens and closes using the rotating support as a fulcrum, an integrated gasket that has two contact points that contact the bottom of the glass edge and the bottom of the dial independently with a tightening margin is attached to the inner circumference of the case. A waterproof structure of a mobile watch case characterized by being guided by a surface. (2) A waterproof structure for a portable watch case as set forth in claim 1 of the utility model registration, characterized in that the seal has a contact portion that contacts the outer periphery of the dial with a tightening margin.