JPS5932949Y2 - mobile watch case - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a portable watch case, and more particularly to a portable watch case with a protective cover that protects the case from external forces such as impacts.

The purpose of this invention is to protect the watch as a whole from external shocks such as drops and collisions caused by buttons on the watch, and to improve the overall quality of the watch. The aim is to comprehensively increase the commercial value of mobile watches by increasing the degree of freedom in design so that colors can be changed and even complex external shapes can be manufactured at low cost.

Conventional watch cases are generally made of plated stainless steel, nickel silver, or brass, but due to the low surface hardness, they are easily scratched, and the initial surface appearance cannot be maintained due to the occurrence of rust, making it difficult to maintain durability. There was a point where it was inferior.

TiC, WC in some cases. There are some cases made of superhard materials such as TaC, but these are brittle materials that are hard but break easily and are damaged by drops, making them unsuitable for use as mobile watch cases.

There are also cases made of plastic or wood, which can provide a variety of designs, but the surface hardness is low so they are easily scratched, and there is a risk of cracking due to sudden changes in temperature or excessive impact. There were some problems, such as:

The present invention eliminates the above drawbacks and improves the tensile strength, compressive strength, tear strength, weather resistance, and
By attaching and fixing the protective cover, which is made of an elastic material made from synthetic rubber that has excellent physical properties such as cold resistance, over the metal case, it protects the entire watch from external shocks such as drops and collisions. , we were able to obtain a mobile watch case with a higher degree of design freedom in terms of shape and color.Explaining it with a drawing, 1 is a protector as an elastic member made from synthetic rubber with excellent mechanical properties such as polyurethane rubber. cover, 3 o'clock side button and 9
Engagement protrusions 1a provided partially below both sides of the case 2 engage with the lower step 2a of the case 2 with a slight tightening margin in the height direction.1. Furthermore, in order to improve the fixing performance to the case 2, it is fixed at four locations with fixing screws 3 made of a metal material with good corrosion resistance such as stainless steel or titanium.

The fixing screw 3 is a stepped screw with a large-diameter head and is configured to prevent the elastic member 1 from being over-tightened, and the head provides a slight tightening margin with the elastic member to prevent loosening. It also has a stopping effect at the same time.

If you use the fixing screw 3, it is removable and you can replace the protective cover with various designs according to your preference.
Instead of screws, it is also possible to drive a bottle into the case and permanently fix it, and use the elasticity of the rubber to attach and detach the elastic member 1.

Since the elastic member 1 can be processed by injection molding, it can be made into a variety of shapes, and the colors can vary from the standard black to navy blue and moss green.The surface finish can also be transferred to the surface condition of the mold, so it can be finished in a matte finish. It has a high degree of freedom in that the unevenness can be freely adjusted, and markings can be added either concave or convex.

The engagement protrusion 1a may be protruded from the middle part instead of the lower end and may be engaged with a groove formed in the center of the case 2, or the fixing screw 3 may be provided not on the top surface but on the side surface and inserted into the case from the side. 2 may be fixed with screws, or may be fixed from an oblique direction.

For the case 2, a protective cover is applied not only to the so-called body but also to parts attached to the body such as the glass rim, and the material thereof is preferably a metal material with good corrosion resistance such as stainless steel or titanium.

A band 4 is made of synthetic rubber such as polyurethane rubber of the same material and color as the elastic member 2, and is attached to four M portions 2b of the case 2 using general spring rods.

The elastic member 2 and the band 4 may be integrally molded from synthetic rubber such as polyurethane rubber, and when they are integrally formed, a full-flow functional beauty is added to the design, and the image can be further improved.

5 is a crown, 6 is a cover glass, 7 is a waterproof ring made of plastic, and 8 is a back cover.

Synthetic rubber such as polyurethane rubber for the elastic member 2 has excellent scratch resistance due to its properties, and does not get scratched even when subjected to external forces that would scratch stainless steel, nickel silver, brass, plastic, etc., and provides shock absorption. In addition to this effect, it also has the effect of improving scratch resistance, and it also makes the watch lighter and more portable, leading to an overall improvement in quality.

As mentioned above, this invention improves the impact resistance of mobile watch cases.
It comprehensively improves scratch resistance, durability, portability, economic efficiency, functionality, design freedom, etc., and has a wide range of applications and great practical effects.

Moreover, in this invention, the fixing member is fixed to the case with a tightness margin to the elastic member, so that the elastic member is tightly fixed to the case surface without rattling, and even if an impact force is applied, the elastic deformation of the elastic member causes the impact. The above-mentioned close fixation is always ensured by absorbing force and tightening margin of the fixing member,
Its practical effects are significant.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a partial vertical sectional view showing a fixing portion thereof. DESCRIPTION OF SYMBOLS 1... Elastic member, 1b... Engagement protrusion, 2... Case, 3... Fixing member.

Claims (1)

[Scope of utility model registration request] An elastic member such as polyurethane rubber is attached to cover all or part of the outer surface of the case made of metal, and a fixing member having a large diameter head such as a screw pin is inserted into the engagement hole formed in the elastic member. A portable watch case characterized in that the fixing member is fixed to the case in a state in which the fixing member is inserted and the head portion provides a tightening margin to the elastic member.