JPS6025588Y2 - Clock side structure - Google Patents

Description

[Detailed description of the invention] The present invention relates to the structure of a watch side of a digital watch, etc., which uses a plastic seal and a parting plate for the glass part.It facilitates the incorporation of the glass into the plastic seal, and improves the periphery of the glass outer shape. The purpose is to improve the appearance and to easily fix the parting board.

In the watch market, digital quartz watches are steadily increasing their share, but because digital watches have horizontal displays, unlike traditional analog watches, the edges and glass have a non-circular shape. There are many things.

Therefore, there is an increasing demand for larger and more square cases.

However, in the case of square waterproof watches, many difficult technical problems remain in terms of appearance and structure.

One of these is a structure that has a plastic seal around the outer periphery of the inorganic glass, which has a large degree of freedom in design.
Although it has an excellent structure, it has the following drawbacks.

A conventional waterproof watch structure using a plastic gasket is shown in Figure 1. A plastic gasket 2 for sealing is placed around the outer periphery of an inorganic glass 1, and the glass 1 is pushed into the body 3 with a tightening margin. The structure was such that the plastic packing 2 was horizontally compressed between the body 3 and the body 3 to obtain waterproof properties.

In this structure, if the glass, plastic packing, and inner wall on the outside of the body are circular, even if the seal is smeared around the entire circumference before the glass is assembled, the compressive force will be uniform all around, and the seal will be applied to the inner wall on the outside of the body. Since the glass was assembled in close contact with each other, the assembly performance and appearance were good.

However, when the outer shape of the glass is non-circular, the shape of the outer inner wall of the shell, the inner shape and outer shape of the plastic packing, and the outer shape of the glass are all non-circular, so the processing accuracy is inevitably inferior.
In addition to the normal all-around seam, an even larger seam may be applied.

Then, the plastic packing tries to escape the compressive force caused by the above-mentioned shingle by deforming the intermediate part between one corner and the adjacent corner in the planar shape, that is, the middle part of each side, but Since the deformation is prevented by the outer inner wall of the body, it deforms slightly inward, and in this state, the glass is inserted from above, so the glass crushes the plastic packing a lot in a plane, so the plastic packing may buckle or the inner wall may bend. This made it difficult to assemble the glass, and the waterproof properties were also compromised.

Moreover, even when glass was incorporated, the plastic packing unevenly protruded inward, resulting in a poor appearance.

The present invention eliminates the above-mentioned drawbacks, makes it easier to fix the parting plate necessary for digital watches, increases the degree of freedom in the parting plate shape, standardizes the back lid, and stabilizes waterproofness. be.

One embodiment will be explained with reference to FIG.

11 is glass, 12 is a plastic packing having a vertically long portion, and 13 is a body.

Above the shell 13, a packing mounting step 13a consisting of one plane is provided, and its outer inner wall is designated as 13b.

15 is the back cover, 16 is the patch, 17 is the middle frame, and 1st is the mechanical body.

If the glass 11 with a non-circular outer shape and a horizontal tightening allowance is attached as it is, the stability of the plastic seal 12 will be poor and it will not be possible to assemble it. The plate 14 is attached to the inside of the plastic packing 12 with its outermost wall substantially matching the innermost wall of the packing 12, and the plastic packing 12
After ensuring stability, the outer circumferential portion 11a of the glass 11 having a horizontal interference is pushed in, and the vertically long portion of the plastic packing 12 is compressed in the horizontal direction between the outer inner wall 13b of the body and the outer circumferential portion of the glass 11a. This is what I did.

According to this method, it is possible to prevent the plastic packing 12 from unevenly protruding inward by the parting plate 14, so that the parting and the outer periphery of the glass have a clean appearance.

Moreover, since the plastic packing 12 and the parting plate 14 are placed on the packing mounting step 13a on the same plane of the barrel, and the two do not overlap, the thickness of this part can be reduced.

In this respect, it has a great effect on the watch side, which is desperately trying to make the thickness even on the order of 0.1.

Further, the parting plate 14 is formed with a stepped portion 14a above the outer periphery and a recessed portion 14b extending inwardly to the inner end, so that the glass 1
The parting plate 14 is firmly sandwiched between the packing mounting step 13a of the shell 13 and the glass 11 by applying the lower surface (flat surface) of the parting plate 14 to the stepped portion 14a of the parting plate 14.

Since the stepped portion 14a of the parting plate 14 is formed to be located above the packing mounting step 13a of the shell, the packing mounting step 13a and the lower surface of the glass 11 are connected to the stepped portion 14a.
It can be firmly clamped and fixed, and
On the inside of the stepped portion 14a of the partition plate 14, the partition plate 1
Since the concave groove 14b was formed to reach the inner end of 4,
Even if the radial width of the parting plate 14 is wide, the concave R14b prevents the portion other than the stepped portion 1.4a from coming into contact with the lower surface of the glass 11, contributing to an improved appearance.

If the parting plate is not provided with the groove 14b, the entire wide upper surface of the parting plate 14 would be in contact with the bottom surface of the glass 11, but in reality, due to warping of the parting plate 14, changes in thickness, etc. It exhibits a colored pattern where areas that do not touch the surface appear, deteriorating its appearance and significantly reducing its decorative value.)
゛The present invention does not have such drawbacks.

In addition, since the thickness of the partition plate is made smaller than its radial width, this part can be made thinner and neater.

In addition, digital watches that require various non-circular shapes,
By adopting the structure of the present invention, the outer shape of the glass is non-circular, and the outer inner wall of the body is also non-circular.
Machining accuracy is not achieved, and due to the non-circular shape, the plastic packing does not expand or contract equally with other parts in the plane direction, so some corners of the plastic packing may overlap with adjacent corners. Even if each side, which is the middle part, tries to deform inward, it will be regulated by the outermost wall of the parting board,
The plastic gasket is supported at the correct position on the outside and inner wall of the body, and the glass is assembled in this state, so there is no buckling or sagging, which is common in conventional cases, and it is easy to assemble and has excellent fire protection. 1. Even if it tries to protrude inward from the lower surface of the glass, the outer wall of the parting plate prevents it from protruding, which has the effect of preventing unsightly appearance.

In addition, the present invention has improved waterproofness compared to a structure in which a plastic gasket is compressed horizontally and attached to the body, and is fixed to the body using a glass edge or the like.

Furthermore, the parting plate can be inserted from the top of the case, and the shape of the parting plate can be freely determined without being restricted by the shape of the back cover, increasing the degree of freedom in the shape of the parting plate and standardizing the back cover. It brings about great benefits.

A similar effect can be obtained when the plastic packing is made into an L shape, and an example of its application is shown in FIG.

As described above, the present invention enables standardization of the back cover for waterproof watches such as digital watches, allows flexibility in the shape of the parting plate, makes it easy to fix the parting plate, and improves the waterproofness, ease of installation, and appearance of the glass part. Both have an excellent structure.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a structure using a conventional plastic packing, FIG. 2 is a sectional view showing one embodiment of the present invention, and FIG. 3 is a sectional view showing another embodiment. 1.11.21・Song・Inorganic glass, 2,12,22・・
...Plastic packing, 3, 13, 23...
...Body, 4, 14, 24...Parting board.

Claims (1)

[Scope of utility model registration request] On the packing mounting stage made of the same plane provided above the barrel,
A plastic packing having a vertically elongated portion disposed between a glass outer peripheral portion having a non-circular outer shape and an outer inner wall of the stepped portion, and a parting plate disposed with its outermost wall substantially matching the innermost wall of the packing. and pushing the outer circumferential wall of the glass into the inner wall of the longitudinal part so as to compress the longitudinal part of the plastic packing in the horizontal direction between the outer inner wall of the body and the glass through the packing. In addition to being fixed to the shell, the parting plate has a stepped portion on the upper outer periphery above the packing mounting stepped portion of the shell and a recessed portion extending inward to the inner end, so that the lower surface of the glass is a flat surface. A watch side characterized in that the parting plate is sandwiched between the step part of the body and the glass by abutting on the step part of the parting plate, and the parting plate is formed with a width dimension larger than its thickness dimension. structure.