Patent Application
20120155229
1. Field of the Invention
The present invention relates a decorative part, a timepiece using the decorative part, and a manufacturing method of the decorative part.
2. Description of the Related Art
For example, in an automatic winding mechanism mounted on an automatic winding watch, an oscillating weight having a body of an oscillating weight and the weight is moved by the movement of the arm of a user, and the mainspring of a movement barrel wheel is wound up. As the oscillating weight, there is an oscillating weight in which the body of the oscillating weight and the weight are integrally molded by a heavy metal firing (for example, refer to JP-UM-A-2-144789 (Patent Reference 1) and JP-A-2000-131461 (Patent Reference 2)).
A watch or the like needs to secure a predetermined mechanical strength so as not to be damaged by an impact due to being dropped. However, as described in Patent References 1 and 2, in the case where the body of the oscillating weight and the weight are integrally molded by the heavy metal firing, although it is expected that the winding efficiency is improved, since spring property to the rotation center side is lost, there is a concern that the center side of the body of the oscillating weight may be damaged when a dropping impact is applied to it. In addition, the impact which is applied to the weight is transferred to a train wheel as it is, and there is a concern that this affects the accuracy of the timepiece.
Thereby, a technology which separates the body of the oscillating weight and the weight and integrates them by laser welding has been suggested (for example, refer JP-A-2000-65962 (Patent Reference 3)).
However, in the Patent Reference 3, the portion to which the laser welding is applied is discolored and the aesthetic appearance is damaged. Thereby, for example, it is also considered that the body of the oscillating weight and the weight are fixed separately by using a fixing member such as screws. However, there is a problem in that the fixing member is conspicuous and the appearance is deteriorated. Particularly, in timepiece parts, there are many cases where coloring is performed on the parts and uniformity of the appearance in the fixing portion between parts is needed in order to improve the decorativeness of the product.
In addition, in order to make the fixing member inconspicuous, it is considered that plating is applied to the fixing member. However, there are problems in that peeling of the plating, aging deterioration due to a pinhole, damage to the aesthetic appearance due to mismatching of a tone of color with the body of the oscillating weight may occur.
It is an aspect of the application to provide a decorative part, a timepiece, and a manufacturing method of the decorative part capable of stabilizing and improving aesthetic appearance while using a fixing member.
In a decorative part according to the present application, the decorative part includes a member to be fixed and a fixing member for fixing the member to be fixed to an object, wherein the member to be fixed and the fixing member are members to which anodizing can be applied.
According to the configuration, an uneven hue between the member to be fixed and the fixing member can be suppressed. In addition, by performing anodizing on the member to be fixed and the fixing member, the member to be fixed and the fixing member can be colored with a stable quality, and the decorative part having an excellent appearance quality can be provided.
In the decorative part according to the present application, the member to be fixed and the fixing member may be formed of either titanium or titanium alloy.
According to the configuration, impact resistance or vibration absorption against dropping or the like of the decorative part can be enhanced. In addition, since the decorative part can acquire sufficient corrosion resistance, rust prevention processing, which is needed in the case like, for example, iron, is not needed to be performed. In addition, aging deterioration in the quality can be suppressed. Therefore, the decorative part which has high quality and reliability can be provided.
In the decorative part according to the present application, a smooth surface which is smoothed by a mechanical processing may be formed on the same plane surface of each of the member to be fixed and the fixing member.
According to the configuration, it is further possible to make the fixing member inconspicuous. Therefore, the decorative part having a more excellent appearance quality can be provided.
In the decorative part according to the present application, the fixing member and the member to be fixed may be colored by anodizing after the member to be fixed is fixed by using the fixing member.
According to the configuration, the decorative part having an excellent aesthetic appearance can be provided. In addition, due to the fact that the decorative part is colored by anodizing, aging deterioration of the hue or peeling can be prevented. Moreover, since the anodic oxide film is a nano-order film, dimensional change of the part can be sufficiently suppressed.
In the decorative part according to the present application, one surface and the other surface of the surfaces of the member to be fixed may be colored by different hues.
According to the configuration, the decorative part having various variations of hue can be provided, and a product corresponding to the demands of users can be provided.
In the decorative part according to the present application, the member to be fixed may be a body of an oscillating weight, and the body of the oscillating weight may be fixed to a weight which is the object by using the fixing member.
According to the configuration, the oscillating weight having an excellent aesthetic appearance can be provided.
A timepiece according to the present application includes the decorative part described in any one of claims 1 to 6.
According to the configuration, the timepiece capable of stabilizing and improving the aesthetic appearance while using the fixing member can be provided.
In a manufacturing method of a decorative part according to the present application in which the decorative part includes a member to be fixed and a fixing member for fixing the member to be fixed to an object, the manufacturing method includes a fixing member mounting process that mounts the fixing member to the member to be fixed, an anodizing process that performs anodizing on the member to be fixed and the fixing member which are integrated by the fixing member mounting process, and a fixing process that fixes the member to be fixed to the object by using the fixing member after undergoing the anodizing process.
According to the method, an uneven hue of the member to be fixed and the fixing member can be suppressed, and it is possible to color the member to be fixed and the fixing member with a stable quality. Therefore, the decorative part having an excellent appearance quality can be provided.
The manufacturing method of the decorative part according to the present application may further include a smooth surface forming process that forms a smooth surface on the same plane surface of each of the member to be fixed and the fixing member by a mechanical processing in the fixing member mounting process.
According to the method, it is further possible to make the fixing member inconspicuous. Therefore, the decorative part having a more excellent appearance quality can be provided.
In the manufacturing method of a decorative part according to the present application in which the decorative part includes a member to be fixed and a fixing member for fixing the member to be fixed to an object, the manufacturing method includes a fixing member mounting process that mounts the fixing member to the member to be fixed, a first anodizing process that performs anodizing on the member to be fixed and the fixing member which are integrated by the fixing member mounting process and forms a first anodic oxide film, an oxide film removing process that removes the first anodic oxide film which is formed on one surface of the fixing member and the member to be fixed after undergoing the first anodizing process, a second anodizing process that performs anodizing again on the fixing member and the member to be fixed and forms a second anodic oxide film on the one surface after undergoing the oxide film removing process, and a fixing process that fixes the member to be fixed to the object by using the fixing member after undergoing the second anodizing process.
According to the method, an uneven hue between the member to be fixed and the fixing member can be suppressed, and variation in the hue can be increased.
According to the present application, an uneven hue between the member to be fixed and the fixing member can be suppressed. In addition, by performing anodizing on the member to be fixed and the fixing member, the member to be fixed and the fixing member can be colored with a stable quality, and peeling can be suppressed. Therefore, the decorative part having an excellent appearance quality can be provided.
Next, a first embodiment of the present invention will be described based on
As illustrated in
Here, in both sides of the main plate 102, a side (the rear of the paper surface in
On the other hand, a train wheel referred to as a front train wheel, an escapement and regulating device 40 for controlling the rotation of the front train wheel, an automatic winding mechanism 60, and the like are built into the front side of the movement 100.
The front train wheel is constituted by a movement barrel wheel 120, a center wheel & pinion 124, a third wheel & pinion 126, and a second wheel & pinion 128. The movement barrel wheel 120 is rotatably supported by the barrel and train wheel bridge 105 and the main plate 102, and includes a mainspring (not illustrated). In addition, if the winding stem 110 is rotated, a clutch wheel (not illustrated) is rotated. Further, the mainspring is wound up via a winding pinion, a crown wheel (none are illustrated), and a ratchet wheel 118.
Moreover, a plate-shaped click 117 is meshed in a tooth section of the ratchet wheel 118, and therefore, the rotation of the ratchet wheel 118 is regulated.
On the other hand, the movement barrel wheel 120 is rotated by the rotation force generated when the mainspring is wound up, and the center wheel & pinion 124 is rotated. The center wheel & pinion 124 is rotatably supported by the center wheel bridge 106 and the main plate 102. If the center wheel & pinion 124 is rotated, the third wheel & pinion 126 is rotated.
The third wheel & pinion 126 is rotatably supported by the barrel and train wheel bridge 105 and the main plate 102. If the third wheel & pinion 126 is rotated, the second wheel & pinion 128 is rotated. The second wheel & pinion 128 is rotatably supported by the barrel and train wheel bridge 105 and the center wheel bridge 106. Due to the fact that the second wheel & pinion 128 is rotated, the escapement and regulating device 40 is driven.
The escapement and regulating device 40 includes a balance with hairspring 136, an escape wheel & pinion 134, and a pallet fork 138. The pallet fork 138 is rotatably supported by the pallet bridge 109 and the main plate 102. The balance with hairspring 136 is rotatably supported by the balance bridge 108 and the main plate 102. The balance with hairspring 136 includes a balance staff 136a, a balance wheel 136b, and a hairspring 136c.
According to the configuration, the escapement and regulating device 40 controls the center wheel & pinion 124 to be rotated once per hour. A cannon pinion (not illustrated) is constituted so as to simultaneously rotate based on the rotation of the center wheel & pinion 124, and a minute hand (not illustrated) which is mounted on the cannon pinion indicates the “minute”.
Moreover, in the cannon pinion, a slip mechanism is installed with respect to the center wheel & pinion 124. Through the rotation of a minute wheel based on the rotation of the cannon pinion, an hour wheel (none are illustrated) is constituted to rotate once every 12 hours. In addition, an hour hand (not illustrated) which is mounted on the hour wheel indicates the “hour”.
Moreover, through the rotation of the third wheel & pinion 126 by the rotation of the center wheel & pinion 124, the second wheel & pinion 128 is constituted to rotate once by one minute. A second hand (not illustrated) is mounted on the second wheel & pinion 128.
In the automatic winding mechanism 60, the oscillating weight 160 constituting the automatic winding mechanism 60 is moved by movement of an arm of a user, and a mainspring (not illustrated) of the movement barrel wheel 120 is wound up. In addition, the oscillating weight 160 has a role which winds a mainspring (not illustrated) and a role which is the decorative part constituting the appearance of the automatic winding watch 10 in a case where a casing (not illustrated) is formed of a transparent member or the like.
The oscillating weight 160 includes a ball bearing 162, a body 164 of an oscillating weight, and a weight 166. The ball bearing 162 includes an inner race, an outer race, and a plurality of balls (none are illustrated) which is installed between the outer race and the inner race, and the inner race is fixed to the barrel and train wheel bridge 105 via a ball bearing locking screw 168.
As illustrated in
In addition, the weight 166 is fixed to the outer peripheral edge of the body 164 of the oscillating weight through screws 61 as the fixing member. Similarly to the body 164 of the oscillating weight, the screws 61 are formed of either titanium or titanium alloy to which anodizing can be applied. Here, it is preferable that the body 164 of the oscillating weight and the screws 61 are of the same material. That is, in the case where the body 164 of the oscillating weight is formed of titanium, the screws 61 are also formed of titanium. Moreover, in the case where the body 164 of the oscillating weight is formed of titanium alloy, the screws 61 are also formed of titanium alloy.
As illustrated in detail in
On the other hand, the weight 166 is formed by molding and firing a compound which has heavy metal powder as the main component, for example, a powder which contains nickel (Ni) or copper (Cu) together with tungsten (W). Moreover, brass may be used.
The weight 166 is curved so as to correspond to the outer peripheral edge of the body 164 of the oscillating weight, and includes a bearing surface 63a on which the body 164 of the oscillating weight can be set on and an outer peripheral wall 63b which is formed so as to be erected at the outer periphery of the bearing surface 63a and covers the outer peripheral edge of the body 164 of the oscillating weight. Through-holes 166a to which the screws 61 can be inserted is formed at the place corresponding to the through-holes 164a of the body 164 of the oscillating weight in the bearing surface 63a.
According to the configuration, the screws 61 are integrated with the bearing surface 63a of the weight 166, the outer periphery 46 of the body 164 of the oscillating weight in which the anodic oxide film 64 is formed on the surface is placed, and the screws 61 are inserted into the through-holes 166a of the weight 166. Thereafter, the body 164 of the oscillating weight and the weight 166 are integrated by buckle-deforming the tips of the screws 61.
Return to
The second transmission wheel 184 includes a second transmission pinion 184b in addition to the second transmission gear 184a. The second transmission gear 184a is disposed between the body 164 of the oscillating weight and the barrel and train wheel bridge 105. On the other hand, the second transmission pinion 184b is meshed with the ratchet wheel 118.
In addition, the pulling claw 180a and the pushing claw 180b of the pawl lever 180 which is meshed with the second transmission gear 184a are biased toward the center of the second transmission gear 184a by elastic force.
According to the configuration, if the oscillating weight 160 is rotated, the oscillating weight pinion 178 is also rotated simultaneously, and the first transmission wheel 182 is rotated by the rotation of the oscillating weight pinion 178. The pawl lever 180, which is mounted in a shape which is eccentric from the shaft center of the first transmission wheel 182, performs a reciprocating movement by the rotation of the first transmission wheel 182. In addition, the second transmission wheel 184 is rotated in a constant direction by the pulling claw 180a and the pushing claw 180b. Thereby, the ratchet wheel 118 is rotated by the rotation of the second transmission wheel 184, and a mainspring (not illustrated) of the movement barrel wheel 120 is wound up.
Next, based on
First, as illustrated in
In
Next, as illustrated in
Next, as illustrated in
Specifically, for example, a titanium plate is immersed in an electrolytic solution of a phosphoric acid aqueous solution and becomes a cathode. Moreover, the integrated body 164 of the oscillating weight and the screws 61 is immersed, and electrolytic voltage is applied and it becomes an anode. Thereby, the anodic oxide film 64 of a titanium oxide is formed on the surface of the body 164 of the oscillating weight and the portion to which the screws 61 are exposed, and the body 164 of the oscillating weight and the screws 61 are colored. At this time, since the body 164 of the oscillating weight and the screws 61 are formed of the same member, a uniform anodic oxide film 64 is formed on the entire body 164 of the oscillating weight and the screws 61, and an uneven hue is not generated.
Next, as illustrated in
Therefore, according to the first embodiment, an uneven hue between the body 164 of the oscillating weight and the screws 61 can be suppressed, and the screws 61 can be inconspicuous. Moreover, since the anodic oxide film 64 is formed on the body 164 of the oscillating weight and the screws 61 and colored, the quality of the aesthetic appearance can be stabilized. In addition, since the coloring is performed by anodizing, aging deterioration of the hue or peeling can be prevented. Moreover, since the anodic oxide film 64 is a nano-order film, dimensional change of the part can be sufficiently suppressed. Thereby, the oscillating weight 160 which has a high manufacturing accuracy and high designability even when the body 164 of the oscillating weight is fixed by using the screws 61 can be provided.
In addition, since the body 164 of the oscillating weight or the screws 61 is formed of either titanium or titanium alloy, impact resistance or vibration absorption against dropping or the like of the oscillating weight 160 can be enhanced. Moreover, since the oscillating weight can obtain sufficient corrosion resistance, rust prevention processing, which is needed in the case like, for example, iron, is not needed to be performed. In addition, aging deterioration in the quality can be suppressed.
In addition, after the screws 61 are inserted into the through-holes 164a of the body 164 of the oscillating weight, one surface 164b of the body 164 of the oscillating weight and the head portions 61a of the screws 61 are ground by a mechanical processing, and the smooth surface 68 is formed so that one surface 164b and the head portion 61a are flush with each other. Thereby, it is further possible to make the screws 61 inconspicuous, and the oscillating weight 160 having a more excellent appearance quality can be provided.
Moreover, in the above-described first embodiment, the case where the uniform anodic oxide film 64 is formed on the entire of the body 164 of the oscillating weight and the screws 61 is described. However, the invention is not limited to this . That is, the film thickness of the anodic oxide film 64 can be changed at the front surface and the rear surface of the body 164 of the oscillating weight respectively. More specifically, based on
Here, two processes of a first anodizing process and a second anodizing process are performed on the body 164 of the oscillating weight and the screws 61.
That is, first, as illustrated in
Next, as illustrated in
Thereafter, the second anodizing is performed on the body 164 of the oscillating weight and the screws 61. At this time, the value of the electrolytic voltage in the second anodizing process is smaller than the value of the electrolytic voltage in the first anodizing process. Thereby, a new oxide film is not formed on the high pressure anodic oxide film 64a formed in the first anodizing process.
On the other hand, as illustrated in
Thereafter, as illustrated in
Therefore, according to the above-described modification of the first embodiment, in addition to those effects similar to the above-described first embodiment, the hue of each of the front and rear surfaces of the body 164 of the oscillating weight can be changed by changing the film thicknesses of the anodic oxide films 64a and 64b. Thereby, the oscillating weight 160 having various variations of hue can be provided, and products according to the needs of users can be provided.
Next, a second embodiment of the invention will be described based on
In the second embodiment, basic configurations such as the configuration in which the automatic winding watch 10 includes the movement 100, and the train wheel referred to as the front train wheel, and the escapement and regulating device 40 for controlling the rotation of the front train wheel, the automatic winding mechanism 60, or the like are built into the front side of the movement 100, the configuration in which the oscillating weight 260 of the automatic winding mechanism 60 includes ball bearings 162, the body 164 of the oscillating weight, and the weight 266, and the body 164 of the oscillating weight and the weight 266 are fixed through the screws 261, the configuration in which the body 164 of the oscillating weight and the screws 261 are formed of either titanium or titanium alloy to which the anodizing can be applied, and the configuration in which the anodizing is performed in advance in the state where the body 164 of the oscillating weight and the screws 261 are integrated and thereafter, the body 164 of the oscillating weight is fixed to the weight 266 are similar to those of the above-described first embodiment (similarly applied also to embodiments hereinafter).
Here, as illustrated in
Therefore, according to the above-described second embodiment, in addition to those effects similar to the above-described first embodiment, assembly workability can be improved due to the fact that the tips of the screws 261 can be easily deformed.
The weight 266 of the second embodiment is curved so as to correspond to the outer peripheral edge of the body 164 of the oscillating weight. However, the weight 266 of the second embodiment does not have an outer peripheral wall which covers the outer peripheral edge of the body 164 of the oscillating weight, and has only the bearing surface 63a capable of placing the body 164 of the oscillating weight (similarly applied also to embodiments hereinafter). In this way, the weight 266 may be constituted to be mounted only on the surface of the side (lower surface in
Next, a third embodiment of the invention will be described based on
As illustrated in
As illustrated in
In addition, the tooth section 69b is constituted to be elastically deformed and can be engaged to the outer peripheral surface of the screws 61.
According to the configuration, the outer periphery 46 of the body 164 of the oscillating weight is placed on the bearing surface 63a of the weight 266, and the screws 61 are inserted into the through-holes 266a of the weight 266. Thereafter, the C-type snap ring 69 is mounted on the tips of the screws 61 from the outside in the radial direction of the screws 61.
Specifically, the notch 70 of the C-shaped ring portion 69a is expanded and the diameter of the ring portion is deformed to be expanded, and the C-type snap ring 69 is mounted by the screws 61 are inserted from the outside in the radial direction. Thereby, the tooth section 69b of the C-type snap ring 69 is wedged to the screws 61, and the screws 61 and the C-type snap ring 69 are engaged to each other. In addition, the falling out direction of the screws 61 is regulated by the C-type snap ring 69.
Here, since the C-type snap ring 69 is mounted on the tips of the screws 61 from the outside in the radial direction of the screws, the anodic oxide film 64 formed on the screws 61 is hardly damaged.
Thereby, according to the above-described third embodiment, those effects similar to the above-described first embodiment can be achieved.
In the above-described third embodiment, the case where the C-shaped ring portion 69a and the tooth section 69b which is protruded to the inner peripheral edge of the C-shaped ring portion 69a are integrally formed in the C-type snap ring 69 is described. However, the invention is not limited to this. That is, only the C-shaped ring portion 69a may be formed in the C-type snap ring 69. In this case, a groove for receiving the C-type snap ring 69 is formed at the tips of the screws 61.
Next, a fourth embodiment of the invention will be described based on
As illustrated in
That is, in the weight 266, a tool driving portion 71 is formed so as to surround the periphery of the through-hole 266a in the rear side of the bearing surface 63a. In addition, if a tool (not illustrated) is driven to the tool driving portion 71, the through-hole 266a is deformed toward the shaft center side and bites into the outer peripheral surface of the screws 61.
Also in the case of the above configuration, those effects similar to the above-described first embodiment can be achieved.
Moreover, the present invention is not limited to the above-described embodiments, and includes those in which various alterations are applied to the above-described embodiments within the range without departing from the gist of the present invention.
For example, in the above-described embodiments, the case where the body 164 of the oscillating weight and the screws 61 and 261 are formed of either titanium or titanium alloy is described. However, the invention is not limited to this. That is, the body 164 of the oscillating weight and the screws 61 and 261 may be formed of any member if at least anodizing can be applied thereto. For example, metal materials such as magnesium (Mg), magnesium alloy, lithium (Li), aluminum (Al), tungsten, molybdenum (Mo) may be used instead of titanium and titanium alloy.
In addition, in the above-described embodiments, the case where one surface 164b of the body 164 of the oscillating weight and the head portions 61a of the screws 61 are ground by a mechanical processing after the screws 61 are inserted into the through-holes 164a of the body 164 of the oscillating weight and the smooth surface 68 is formed is described. However, the invention is not limited to this. That is, anodizing may be performed on the body 164 of the oscillating weight and the screws 61 without smoothing one surface 164b of the body 164 of the oscillating weight and the head portions 61a of the screws 61. Also in the case of the configuration, due to the fact that the member forming the body 164 of the oscillating weight and the member forming the screws 61 are completely the same or substantially the same with each other, the hues of both 164 and 61 can be matched to each other, and it is possible to make the screws 61 inconspicuous.
Moreover, in the above-described embodiments, the case where the screws 61 and 262 are used as the fixing member for fixing the body 164 of the oscillating weight to the weights 166 and 266 is described. However, the fixing member is not limited to the screws 61 and 262. That is, any member may be used if the body 164 of the oscillating weight can be fixed to the weights 166 and 266 and the anodizing can be applied thereto. For example, a bolt maybe used instead of the screws 61 and 262.
In addition, in the above-described embodiments, the case where the body 164 of the oscillating weight which is built into the movement 100 of the automatic winding watch 10 and is the member to be fixed and the screws 61 and 261 which are the fixing members in order to fix the body 164 of the oscillating weight to the weights 166 and 266 which are the objects are used, and anodizing is performed on the body 164 of the oscillating weight and the screws 61 and 261 which are the member to which anodizing can be applied is described. However, the invention is not limited to this. That is, the above-described embodiment can be adapted with respect to various decorative parts in which the member to be fixed is fixed to the object through the fixing member.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2010-281039 | Dec 2010 | JP | national |
