CH706286A2 - decorative component, timepiece component, timepiece and method for decorative component manufacturing. - Google Patents

Abstract

There is provided a decorative component, a timepiece component, a timepiece, and a decorative component manufacturing method that can give a high-end color to the surface of a metal coating. titanium alloy constituting a foundation. An oscillating weight body (164) in which a titanium alloy coating (64) is formed on the surface of a main body (164a), a metal oxide coating (65) is formed on the surface of the coating titanium alloy (64), and the L * value according to the L * a * b * color system of the titanium alloy coating (64) ranges from 0 to 50.

Description

Background of the invention

Field of the invention

[0001] This invention relates to a decorative component, a timepiece component, a timepiece and a method of manufacturing a decorative component.

Description of the prior art

[0002] Conventionally, as a method of improving the external appearance of an oscillating weight constituting a self-winding mechanism mounted in a self-winding watch, a timepiece component such as a coin case, watchmaking, etc., there is known a method according to which a coating of titanium, titanium nitride or the like constituting a foundation is formed by ionic plating, vaporization and the like on a timepiece component, the coating which is subject to oxidation treatment by electrolytic treatment after. By such a method, a timepiece component is colored, using a photo-interference effect.

Here, to improve the decorative value of a timepiece component, a technique is disclosed according to which the value of a * or b * of the color of a coating of titanium, titanium nitride or the like constituting a foundation as indicated by the 1976L * a * b * color system is set to a variation of -50 to 50. Due to this technique, it is possible to render titanium, titanium nitride or the like transparent (see, for example, JP-B-7-74,428 (Patent Document 1)).

A coating of titanium, titanium nitride or the like exhibits a high value L * constituting an index of luminosity, that is to say, it is of a luminous color, which means that it strongly reflects the light. Therefore, an oxide coating formed on a coating of titanium, titanium nitride or the like can only give a pastel light color, making it rather difficult to develop a high-end color.

Summary of the invention

This invention has been made in view of the above problem in the prior art. It is an object of this invention to provide a decorative component, a timepiece component, a timepiece, and a decorative component manufacturing method that can give a color that looks high on the surface. a titanium alloy metal coating constituting a foundation.

To achieve the above object, there is provided according to the present invention a decorative component in which a metal coating of a titanium alloy is formed on the surface of a main body of component and in which a coating a metal oxide is formed on the surface of the metal coating, wherein the L * value according to the L * a * b * staining system of the metal coating ranges from 0 to 50.

Due to this construction, it is possible to suppress the light reflection of the metal coating constituting a foundation and adjust the color of the metal oxide constituting a top layer film to a depth color. So, it is possible to bring a decorative component to show a color that looks more upscale.

In the decorative component according to the present invention, the metal coating comprises at least one compound selected from: a compound of titanium and oxygen (TiOx, 0.5≤x≤2), a compound of titanium, oxygen, and carbon (TiOxCy , 0.5≤x≤2, 0.05≤y≤0.5), a compound of titanium, oxygen and nitrogen (TiOxNz, 0.5≤x≤2, 0.05≤z≤0.5), and a compound of titanium, oxygen, carbon and nitrogen ( TiOxCyNz, 0.5≤x≤2, 0.05≤y≤0.5, 0.05≤z≤0.5), and an unavoidable ingredient.

Due to this construction, it is possible to reliably adjust the L * value from 0 to 50, making it possible to provide a decorative component emitting a color that looks high-end.

In the decorative component according to the present invention, the metal coating is formed by multicolour molding.

Because of this function, it is possible to make an increase in a color variation. In addition, it is possible to provide the colored part with light and shade, making it possible to achieve a decorative design with a sense of perspective.

In the decorative component according to the present invention, the metal coatings of different colors are respectively adjusted L * values of a difference between them of 2 or more.

Because of this function, it is possible to achieve a transparent metal coating, multicolored.

The timepiece component according to the present invention is equipped with a decorative component as claimed in any one of claims 1 to 3.

Because of this function, it is possible to provide a timepiece component having a surface whose foundation is formed of a metal coating of a titanium alloy and which can show a color which has the high-end air.

The timepiece according to the present invention is equipped with a timepiece component as claimed in claim 4.

Because of this function, it is possible to provide a timepiece having a surface whose foundation is formed of a metal coating of a titanium alloy and which can show a color that looks high. of range.

According to the present invention, there is provided a decorative component manufacturing method in which a metal coating of a titanium alloy is formed on the surface of a main body of compound and wherein a coating of an oxide metal is formed on the surface of the metal coating, the method comprising the steps of: forming the metal coating such that the value L * according to the coloring system L * a * b * varies from 0 to 50; and forming the coating of the metal oxide on the surface of the metal coating.

By adopting the manufacturing method above, it is possible to adjust the color of the coating of the metal oxide to a deep dark color, making it possible for the decorative component to show a color that looks high. of range.

According to the present invention, it is possible to suppress the reflection of light from a metal coating constituting a foundation, and to adjust the color of a coating of a metal oxide constituting a top layer film to a dark color of depth. So, it is possible for a decorative component to show a color that looks upscale.

Brief description of the drawings

FIG. 1 is a plan view of the obverse side of a movement with a self-winding mechanism according to an embodiment of the present invention removed therefrom.

FIG. 2 is a schematic diagram illustrating the self-winding mechanism according to an embodiment of the present invention.

FIG. 3 is a plan view of an oscillating weight according to an embodiment of the present invention.

FIG. 4 is a diagram illustrating the structure of a coating according to an embodiment of the present invention.

FIG. 5 is a plan view of an oscillating weight according to a modification of the present embodiment of the present invention.

Detailed Description of the Preferred Embodiments

A self-winding watch

Next, an embodiment of this invention will be described with reference to the drawings.

FIG. 1 is a plan view, as seen from the obverse side, of a movement with a self-winding mechanism removed therefrom, and FIG. 2 is a schematic diagram illustrating the construction of the self-winding mechanism.

As shown in FIGS. 1 and 2, a self-winding watch 10, in which a decorative component according to the present invention (ie, an oscillating weight 160 described below) is inserted, is composed of a movement 100 and a coating (not shown) accommodating this movement 100, with a dial (not shown) which is mounted to the movement 100. The movement 100 is equipped with a main plate 102 constituting a base plate, a cylinder and wheel axle bridge 105, a wheel bridge a center beam 106, a balance bridge 108, and a pallet bridge 109. The center wheel bridge 106 is arranged between the barrel and wheel axle deck 105 and the main plate 102. The main plate 102 has a hole in it. winding stem guide 103, wherein a winding stem 110 is rotatably inserted.

Here, on both sides of the main plate 102, the side where the dial is arranged (the depth side of the plane of Figs 1 and 2) will refer to the back side of the movement 100, and the opposite side to the side where the dial is arranged (the front side of the plane of Figs 1 and 2) will refer to the obverse side of the movement 100. On the reverse side of the movement 100, they are arranged a wheel train that refers to a reverse side of the train wheel, and a switching device including an adjusting lever 140, a rocker 142, and an adjusting lever spring 144. Because of this switching device, the position of the winding stem 110 in the axial direction is determined .

On the other hand, inserted into the obverse side of the movement 100 is a wheel train which refers to an obverse wheel train, an exhaust device / regulator 40 to control the rotation of the wheel train obverse, a self-winding mechanism 60, etc.

The obverse wheel train is composed of a movement barrel 120, a wheel & center gear 124, a third wheel & pinion 126, and a second wheel & pinion 128. The movement barrel 120 is supported so rotating by the barrel and axle wheel 105 and the main plate 102, and has a mainspring (not shown). And, when the winding rod 110 is rotated, a sliding pinion (not shown) is rotated; in addition, the mainspring is wound by a winding pinion (not shown), a crown wheel (not shown), and a ratchet wheel 118.

In addition, the toothed portion of the ratchet wheel 118 meshes with a plate-shaped click 117, where the rotation of the ratchet wheel 118 is adjusted.

On the other hand, the movement barrel 120 is rotated by the rotational force when the mainspring is cocked again; in addition, the wheel & center gear 124 rotates. The center wheel & pinion 124 is rotatably supported by the center wheel axle 106 and the main plate 102. As the center wheel & pinion 124 rotates, the third wheel & pinion 126 rotates.

The third wheel & pinion 126 is rotatably supported by the barrel and axle wheel 105 and the main plate 102. When the third wheel & pinion 126 rotates, the second wheel & pinion 128 rotates. The second sprocket wheel 128 is rotatably supported by the barrel and axle deck 105 and the center wheel axle 106. By the rotation of the second sprocket wheel 128, the exhaust / regulator 40 is leads.

Exhaust system / regulator

The exhaust device / regulator 40 is equipped with a balance wheel with a spring 136, a wheel & pinion 134, and a pallet fork 138. The pallet fork 138 is rotatably supported by a bridge pallet 109 and the main plate 102. The balance with spiral 136 is rotatably supported by a balance bridge 108 and the main plate 102. The balance with spiral 136 has a balance shaft 136a, a balance wheel 136b, and a spiral 136c.

In this construction, the exhaust device / regulator 40 performs a control such that the wheel & center gear 124 makes a rotation per hour. Based on the rotation of the center wheel & pinion 124, a barrel pinion (not shown) rotates simultaneously; a minute hand mounted to this cannon pinion indicates "minute".

In addition, the pinion is provided with a sliding mechanism relative to the wheel & center pinion 124. On the basis of the rotation of the pinion, an hour wheel (not shown) rotates every 12 hours by rotating a minute wheel (not shown). And, an hour hand (not shown) mounted to the hour wheel indicates "hour."

In addition, by the rotation of the wheel & center gear 124, the second wheel & pinion 128 makes a rotation per minute by the rotation of the third wheel & pinion 126. A second hand (not shown) is mounted at the second wheel & pinion 128.

Self-winding mechanism

The self-winding mechanism 60 is configured to move an oscillating weight 160 constituting this self-winding mechanism 60 by the movement of the user, by raising a motor spring (not shown) of the movement barrel 120. In addition to the spiral winding function (not shown), the swing weight 160 having the portion function as a decorative component forming the outer appearance of the self-winding watch 10 when, for example, a coating (not shown) is formed by a transparent member.

This oscillating weight 160 has a ball bearing 162, a body of oscillating weight 164, and a weight 166. The ball bearing 162 has an inner ring, an outer ring, and a plurality of balls (none of these). shown therein) provided between the outer ring and the inner ring, and the inner ring is attached to the barrel and axle deck 105 by a ball bearing adjusting screw 168.

Swing weight body and weight

FIG. 3 is a plan view of the oscillating weight.

As shown in the drawing, the oscillating weight body 164 of the oscillating weight 160 is formed in a substantially sector-shaped configuration, and the ball bearing 162 is arranged at the center of rotation center thereof. And, the outer ring of the ball bearing 162 and the oscillating weight body 164 are fixed together. The oscillating weight body 164 may be formed of any material as long as it allows a plating of its surface.

A weight 166 formed in a curved configuration to be in correspondence with the outer peripheral edge of the oscillating weight body 164 is attached to the outer peripheral edge of the oscillating weight body 164 by a screw 61. The weight 166 is formed by molding release of a compound whose main component is a heavy metal powder, for example, a powder containing tungsten (W), nickel (Ni), and copper (Cu). In addition, it is also possible to use brass or the like.

The method of fixing the weight 166 to the oscillating weight body 164 is not restricted to that using the screw 61; it is also possible to make the attachment using, for example, adhesive or the like.

Coating

Here, the oscillating weight body 164 is colored by forming a coating 70 on the surface of a main body 164a thereof.

FIG. 4 is a diagram illustrating the structure of the coating 70 formed on the surface of the main body 164a of the oscillating weight 164. As shown in the diagram, a double-layer coating 70 consisting of a titanium alloy coating 64 and an oxide coating 65 is uniformly formed on the entire surface of the main body 164a of the oscillating weight 164.

More specifically, the first layer in contact with the surface of the main body 164a of the oscillating weight 164 is formed as the titanium alloy coating 64. The titanium alloy coating 64 is formed of a compound obtained by adding a minute amounts of carbon (C), nitrogen (N), oxygen (O2), etc .; its thickness T1 is set to a variation of 0.2 μm to 5.0 μm. More preferably, the T1 film thickness is set to approximately 1.0 μm.

This is because if the thickness T2 of the titanium alloy coating 64 is too small, the oxide coating 65 formed on this titanium alloy coating 64 can not develop color; in addition, when the thickness T2 is too wide, there is a concern of cracking and separation due to the residual compressive stress of the titanium alloy coating 64 itself.

Here, when, for example, titanium carbide (TiC) is adopted for the titanium alloy coating 64, the coating develops a gray color, and when it is adopted titanium nitride (TiN), it develops a golden color. In this titanium alloy coating 64, the L * value in the L * a * b * staining system is set from 0 to 50. That is, by varying the carbon and nitrogen content, the value L * of the titanium alloy coating 64 is set from 0 to 50.

More specifically, the titanium alloy coating 64 consists, for example, in at least one compound selected from: a titanium and oxygen compound (TiOx, 0.5≤x≤2); a titanium, oxygen and carbon compound (TiOxCy, 0.5≤x≤2, 0.05≤y≤0.5); a titanium, oxygen and nitrogen compound (TiOxNz, 0.5≤x≤2, 0.05≤z≤0.5); and a compound of titanium, oxygen, carbon and nitrogen (TiOxCyNz, 0.5≤x≤2, 0.05≤y≤0.5, 0.05≤z≤0.5), and an unavoidable ingredient.

In addition, in the formation of the titanium alloy coating 64, it is adopted, for example, an ionic plating process. As the coating condition for the titanium alloy coating 64 to be formed by the ion plating process, the degree of vacuum is set, for example, to 10 <-> <5> Torr, and the applied voltage is set at 100 V. Therefore, the titanium alloy coating 64 is formed on the surface of the main body 164a of the oscillating weight body 164 (the step of forming a metal coating).

The process for forming the titanium alloy coating 64 is not restricted to the ion plating process; it is also possible to adopt other various methods making it possible to form the titanium alloy coating 64. For example, instead of the ion plating process, it is also possible to adopt the vaporization process.

And, anodic treatment is performed on the titanium alloy coating 64 thus formed, thereby forming the oxide coating 65 as the second layer on the surface of the titanium alloy coating 64 (the step of forming a coating of a metal oxide).

More specifically, a titanium plate is immersed, for example, in the electrolyte of an aqueous phosphate solution (H 3 PO 4) to prepare a cathode in this way; at the same time, the main body 164a of the oscillating weight body 164 with the titanium alloy coating 64 formed thereon is immersed in the solution, and an electrolytic voltage is applied thereto to prepare an anode. Then, the oxide coating 65 is formed on the surface of the titanium alloy coating 64, and the main body 164a of the oscillating weight body 164 develops a color.

Here, the aqueous phosphate solution used is 15 ml / l, and the applicable concentration ranges from 5 to 100 ml / l. In addition, the applied voltage is set so that the thickness T2 of the oxide coating varies from 0.03 to 0.05 μm. The color of the main body 164a of the oscillating weight body 164 is determined by the type of solution (alkaline acid), the concentration and the magnitude of the applied voltage, so that it is possible to adjust an arbitrary thickness T2 using these as settings. There are no particular limitations regarding the application time.

[0056] Referring to FIG. 2, the outer ring of the ball bearing 162 is provided with an oscillating weight pinion 178. This oscillating weight pinion 178 is brought into engagement with a barrel and a wheel gear operating gear 182a of a barrel and wheel of wheel operation 182.

The barrel and gear wheel 182a is rotatably supported by the barrel and axle wheel 105 and the main plate 102. In addition, a ratchet lever 180 is inserted between the cylinder and the wheel gear wheel 182 and the barrel and wheel axle bridge 105. The ratchet lever 180 is mounted to be deflected from the barrel axis and the wheel gear wheel 182, and a traction pawl 180a and a push pawl 180b. The traction pawl 180a and the pawl 180b are held in mesh with a center operating gear 184a of a center operating wheel 184.

In addition to the center operating gear 184a, the center operating wheel 184 has a center operating gear 184b. The center operating gear 184a is located between the oscillating weight body 164 and the barrel and axle deck 105. On the other hand, the center operating gear 184b is engaged with the wheel. ratchet 118.

And, the traction pawl 180a and the pawl 180b of the ratchet lever 180 meshing with the center operating gear 184a are urged by an elastic force towards the center of the gearing. center operation 184a.

In this construction, when the swing weight 160 rotates, the swing weight pinion 178 also rotates simultaneously; and, by the rotation of the oscillating weight gear 178, the barrel and wheel gear operating wheel 182 rotates. By rotation of the barrel and wheel gear wheel 182, the ratchet lever 180 mounted to deflect the barrel axis and wheel gear wheel 182 makes a reciprocal movement. And the center operating wheel 184 is rotated in a fixed direction by the traction pawl 180a and the pusher 180b. Then, by the rotation of the center operating wheel 184, the ratchet wheel 118 rotates, by winding the motor spring (not shown) of the movement barrel 120.

Advantage

Thus, according to the embodiment described above, the value L * according to the L * a * b * color system of the titanium alloy coating 64 formed on the surface of the main body 164a of the oscillating weight body 164 is set from 0 to 50 to make it possible to suppress light reflection L at the titanium alloy coating 64 (see Fig. 4). It is possible to adjust the color of the oxide coating 65 constituting the top layer on the titanium alloy coating 64 to a dark deep color. So, it is possible for the oscillating weight body 164 to develop a color that looks upscale.

In addition, as the proportion of the compound to form the titanium alloy coating 64, there is employed at least one compound selected from: a compound of titanium and oxygen (TiOx, 0.5≤x≤2), a compound of titanium, oxygen and carbon (TiOxCy, 0.5≤x≤2, 0.05≤y≤0.5), a titanium, oxygen and nitrogen compound (TiOxNz, 0.5≤x≤2, 0.05≤z≤0.5), and a titanium compound , oxygen, carbon and nitrogen (TiOxCyNz, 0.5≤x≤2, 0.05≤y≤0.5, 0.05≤z≤0.5), and an inevitable ingredient, by which it is possible for the oscillating weight body 164 to reliably develop a color that looks upscale.

The present invention is not restricted to the embodiment described above but includes various modifications without departing from the scope of the essence of the present invention.

For example, in the embodiment described above, the titanium alloy coating 64 is uniformly formed over the entire surface of the oscillating weight body 164. This, however, should not be interpreted restrictively; it is only necessary for the value L * to be set from 0 to 50; and it is also possible to partially vary the L * value of the titanium alloy coating 64, so the multicolor molding of the titanium alloy coating 64. This will be described more specifically below.

change

FIG. 5 is a plan view of a swing weight according to a modification of the present embodiment; the drawing corresponds to FIG. 3. In the following description, the parts which are the same as those of the embodiment described above are indicated by the same reference numerals.

As shown in the drawing, when, for example, the letter M is to be printed on the surface of the main body 164a of the oscillating weight body 164, the value L * of the part of a titanium alloy coating 264a corresponding to this letter M is made different from the value L * of the part of a titanium alloy coating 264b other than the letter M.

That is, the titanium alloy coatings 264a and 264b are formed separately using different masks, respectively. And, a regulation is made so that the difference between the L * value of the titanium alloy coating 264a and the L * value of the titanium alloy coating 264b is 2 or more. By this setting, it is possible to clearly express the contrast between light and shadow of titanium alloy coatings 264a and 264b, making it possible to provide a design with a sense of perspective.

The multicolored molding of the titanium alloy coating 64 is not restricted to the case where the letter M is printed on the surface of the main body 164a of the oscillating weight body 164 as shown in FIG. 5; it is also possible to make a multicolored molding on the entire main body 164a of the oscillating weight body 164.

In addition, in the embodiment described above, the titanium alloy coatings 64, 264a and 264b are formed on the oscillating weight body 164 of the oscillating weight 160 constituting the automatic winding mechanism 60 of the watch. self-winding 10, and the L * value of these titanium alloy coatings 64, 264a and 264b is set from 0 to 50. This, however, should not be interpreted restrictively; the embodiment described above is also applicable to other various decorative components.

Claims (7)

A decorative component in which a metal coating of a titanium alloy (64) is formed on the surface of a main body (164a) of component and wherein a coating of a metal oxide (65) is formed on the surface of the metal coating, wherein the L * value according to the L * a * b * color system of the metal coating varies from 0 to 50. The decorative component according to claim 1, wherein the metal coating comprises at least one compound selected from: a titanium-oxygen compound (TiOx, 0.5≤x≤2), a titanium, oxygen and carbon compound (TiOxCy, 0.5≤x≤2, 0.05≤y≤0.5), a compound of titanium, oxygen, and nitrogen (TiOxNz, 0.5≤x≤2, 0.05≤z≤0.5), and a titanium compound, of oxygen, carbon and nitrogen (TiOxCyNz, 0.5≤x≤2, 0.05≤y≤0.5, 0.05≤z≤0.5), and an unavoidable ingredient. The decorative component of claim 1 or claim 2, wherein the metal coating is formed of a multicolour molding. 4. The decorative component according to claim 3, wherein the metallic coatings of different colors are respectively set to L * values of a difference between them of 2 or more. 5. A timepiece component equipped with a decorative component as claimed in any one of claims 1 to 4. 6. A timepiece equipped with a timepiece component as claimed in claim 5. A decorative component manufacturing method in which a metal coating of a titanium alloy (64) is formed on the surface of a component main body (164a) and wherein a coating of a metal oxide is formed on the surface of the metal coating, the method comprising the steps of: formation of the metal coating such that the value L * according to the coloring system L * a * b * varies from 0 to 50; and forming the coating of the metal oxide on the surface of the metal coating.