CN104570693B - Hollow watch watchcase - Google Patents

Abstract

A kind of hollow watch watchcase, is related to wristwatch case.A receiving space (2) is provided with inside hollow watch watchcase, including watch shell (1), the ear pin (4) for being arranged on watch shell both sides, watch shell, receiving space (2) is surrounded by table wall (3) and formed；It is hollow inside table wall (3), middle cavity (7) is surrounded by shell wall (6).The present invention can reduce case weight while can ensure the intensity of housing, can realize 3ATM waterproofs；It is easy to process, it is greatly reduced than common karat gold table processing cost, hardness can almost reach the hardness of 18K gold, wearability is good；Under same volume, the selling cost of electroforming pure gold table is greatly reduced.

Description

hollow watch case

technical field

The present invention relates to watch cases.

Background technique

Existing watch case refers to the shell part of the watch head, its function is to contain and protect the internal parts of the watch, such as the movement, dial, hands, etc., while providing the watch with a fashionable and charming appearance. The parts that are closely connected with the watch case are: watch mirror, bottom cover, crown, push button, etc. In addition to directly protecting the internal components of the watch, the watch case also largely determines the various performance indexes of the watch, such as: water resistance, dust resistance, magnetic resistance, shock resistance, etc. The materials of the watch case are K gold, gold-plated, titanium, stainless steel, semi-steel plated Luo, alloy shell and so on. Existing case metal watch walls are all made of solid, which makes the metal watch too heavy. When using precious metals to make the case, the cost is too high.

Contents of the invention

The object of the present invention is to provide a hollow watch case which reduces the weight of the case.

A technical solution adopted by the present invention to achieve the above object is: a hollow watch case, including a watch case, ear feet arranged on both sides of the watch case, a housing space is provided inside the watch case, and the housing space Surrounded by a surface wall; the interior of the surface wall is hollow, and a hollow cavity is surrounded by the shell wall; the shell wall of the surface wall is equal in thickness; the thickness of the shell wall is 170 microns to 5 mm; the ears and feet are hollow, and the ears and feet are hollow It is integrated with the hollow cavity of the watch wall; the watch case and lugs are composed of electroformed deposition layers, copper is electroplated on the zinc alloy mold, and precious metal is electroformed on the copper electroplating layer to form the watch case and lugs; After the zinc alloy mold is dissolved by hydrochloric acid and the electroplated copper is dissolved by sulfuric acid, hollow cavities are formed in the watch case and lugs.

Further, the accommodating space is an annular hollow structure.

Further, reinforcing ribs or reinforcing columns are arranged in the cavity of the surface wall.

The invention can reduce the weight of the shell while ensuring the strength of the shell, and can realize 3ATM waterproof; the processing is convenient, the processing cost is greatly reduced compared with the ordinary K gold watch, the hardness can almost reach the hardness of 18K gold, and the wear resistance is good; in the same volume Under this circumstance, the sales cost of electroformed pure gold watches has been greatly reduced.

Description of drawings

Fig. 1 is the schematic diagram of preferred embodiment of the present invention;

Fig. 2 is a schematic sectional view of a preferred embodiment of the present invention;

Fig. 3 is a schematic cross-sectional view of the ear and foot part of a preferred embodiment of the present invention;

Fig. 4 is a schematic cross-sectional view of the tube part of the preferred embodiment of the present invention.

detailed description

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

As shown in Figures 1 and 2, a hollow wrist watch case includes a watch case 1 and lugs 4 arranged on both sides of the watch case. Inside the watch case, there is an accommodation space 2, which is formed by the watch case. The wall 3 is formed around; the inside of the surface wall 3 is hollow, and the hollow cavity 7 is surrounded by the shell wall 6 . The accommodating space 2 is used for installing components such as a movement and a dial, and the accommodating space 2 is usually designed as a ring-shaped hollow structure. The hollow structure of the surface wall 3 is a closed structure.

The shell wall 6 of the surface wall is of equal thickness. The shell wall 6 has a thickness of 170 microns to 5 mm, and the thickness of the shell wall can ensure the strength of the shell.

As shown in FIG. 3 , the lugs 4 for connecting the strap are hollow, and the hollow cavity of the lugs is connected with the hollow cavity 7 of the watch wall 3 as a whole. The lugs 4 can be integrated with the watch case 1 , and the lugs 4 are contained in the watch case 1 .

As shown in FIG. 4 , the surrounding of the bully tube 5 is also designed to be hollow, and the bully tube 5 runs through the surface wall 3 and the accommodating space 2 .

The cavity 7 of the surface wall 3 is provided with reinforcing ribs or reinforcing columns, which can strengthen the overall strength of the shell.

The present invention can be implemented by electroforming, especially by using precious metals as materials such as gold and silver. In the future, it can also be implemented through methods such as 3D printing.

When the electroforming process is adopted, the zinc alloy is used as the material to obtain the mold by die-casting; a certain thickness of copper is electroplated on the mold; and then a certain thickness of precious metal is electroformed on the copper electroplating layer. In this example, the precious metal is hard pure gold; The discharge hole is a hole drilled on the workpiece after electroplating copper and precious metals; the zinc alloy and copper electroplating layer that make up the model are chemically reacted and melted by adding hydrochloric acid and heating to the boiling point, and the zinc alloy is completely dissolved in hydrochloric acid, and discharged through the discharge hole, and then cleaned by water, if the cleaned watch case still contains copper plating layer, add sulfuric acid and heat to the boiling point for chemical reaction, copper is completely dissolved in sulfuric acid, through the discharge The feed hole is discharged, and finally the precious metal watch case is obtained.

The invention can reduce the weight of the case and at the same time ensure the strength of the case, especially on the watch case made of precious metal materials, which can realize 3ATM waterproof; it is convenient to process, and the processing cost is greatly reduced compared with ordinary K gold watches, and the hardness is almost It can reach the hardness of 18K gold and has good wear resistance; under the same volume, the sales cost of electroformed pure gold watches is greatly reduced.

Claims (4)

1. it is provided with inside a kind of hollow watch watchcase, including watch shell (1), the ear pin (4) for being arranged on watch shell both sides, watch shell One receiving space (2), receiving space (2) is surrounded by table wall (3) and formed；It is characterized in that：It is hollow inside table wall (3), by shell Wall (6) surrounds middle cavity (7)；Shell wall (6) uniform thickness of table wall；The thickness of shell wall (6) is 170 microns~5 millimeters；

Ear pin (4) is hollow, and the middle cavity (7) of cavity and table wall (3) is connected as one in ear pin；

The watch shell (1) and ear pin (4) are noble metal electroformed deposit layer composition, the electro-coppering in kirsite mould kind, in copper electricity Electroforming noble metal formation watch shell (1) and ear pin (4) on coating；Kirsite mould kind is through dissolving with hydrochloric acid, electro-coppering through sulfuric acid dissolution Afterwards, cavity (7) in being formed in watch shell (1) and ear pin (4).

2. hollow watch watchcase according to claim 1, it is characterised in that：Also it is hollow design, despot around despot's pipe (5) (5) are managed through table wall (3) and receiving space (2) insertion.

3. hollow watch watchcase according to claim 1 or 2, it is characterised in that：Receiving space (2) is circular hollow knot Structure.

4. hollow watch watchcase according to claim 1, it is characterised in that：Reinforcement is provided with table wall (3) in cavity (7) Or reinforcing prop.