JP2017096805A - Timepiece component, movement, and timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a timepiece component that can prevent a timepiece from becoming larger due to installation of a transmission/reception unit.SOLUTION: A dial plate 11 comprises: a dial plate body 21; and a transmission/reception unit 30 that is provided on the dial plate body 21 and includes an IC chip 31 and an antenna 33. The dial plate body 21 comprises: a base material layer 22; an electrode layer 23 layered over the base material layer 22; and an insulation layer 24 coating the electrode layer 23. On the electrode layer 23, the antenna 33 is formed. On the base material layer 22, an electronic component accommodation section 25 capable of accommodating the IC chip 31 is provided.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a timepiece part, a movement, and a timepiece.

  Conventionally, a watch including a transmission / reception unit that communicates with an external device is known. For example, Patent Document 1 discloses a wireless module (including a film substrate, an antenna provided with wiring on the film substrate, and an IC chip (electronic component) provided on the film substrate and electrically connected to the antenna). A timepiece having a transmission / reception unit) is disclosed.

Japanese Patent No. 4415180

  However, in the above-described conventional timepiece, since the transmission / reception unit is provided separately from the timepiece parts such as the dial, there is a problem that the number of parts increases and the timepiece becomes larger.

  Therefore, the present invention provides a timepiece component that can prevent an increase in the size of the timepiece by providing a transmission / reception unit, a movement including the timepiece component, and a timepiece.

  The timepiece component of the present invention includes a plate-like member, and a transmission / reception unit that is provided on the plate-like member and includes an electronic component and an antenna, and the plate-like member is laminated on the base material layer and the base material layer. An electrode layer and an insulating layer covering the electrode layer, the antenna is formed on the electrode layer, and the electronic component accommodating portion capable of accommodating the electronic component is disposed on the base material layer. It is provided, It is characterized by the above-mentioned.

  According to the present invention, since the electronic component accommodating portion for accommodating the electronic component is provided in the base material layer of the plate-like member, and the antenna is formed in the electrode layer of the plate-like member, the transmission / reception unit is the plate-like member. It can be embedded inside. Thereby, the timepiece component can be provided with the transmission / reception unit while preventing the thickness from increasing. Therefore, as compared with the configuration in which the transmission / reception unit is provided as a separate member, an increase in the size of the timepiece can be prevented by providing the transmission / reception unit.

  In the timepiece component described above, the antenna is preferably formed on a surface of the base material layer.

  According to the present invention, a thin film antenna can be easily formed by applying a metal material to the surface of the base material layer by ink jet printing, flexographic printing, or the like. As a result, it is possible to provide a transmission / reception unit while preventing an increase in thickness, and to make a watch part that is easy to manufacture. Therefore, by providing the transmission / reception unit, the timepiece can be prevented from being enlarged, and the timepiece can be reduced in cost.

  In the timepiece component described above, it is desirable that the base material layer is provided with an antenna housing portion that can be housed in a state where the antennas are stacked.

  ADVANTAGE OF THE INVENTION According to this invention, the laminated | multilayer antenna is accommodated in an antenna accommodating part, The winding | turns number of the coil of an antenna can be increased, preventing that timepiece components become thick. Thereby, the communication sensitivity of the transmission / reception unit can be improved while preventing the thickness of the timepiece component from increasing. Therefore, by providing the transmission / reception unit, it is possible to prevent the timepiece from increasing in size and to obtain a high-performance timepiece.

  A movement according to the present invention includes the above-described timepiece component.

  According to the present invention, the movement can be reduced in size and thickness compared to the configuration in which the transmission / reception unit is provided as a separate member, so that the timepiece can be prevented from being enlarged.

  A timepiece according to the present invention includes the timepiece component described above.

  According to the present invention, a small and thin timepiece can be obtained as compared with the configuration in which the transmission / reception unit is provided as a separate member.

  According to the present invention, since the electronic component accommodating portion for accommodating the electronic component is provided in the base material layer of the plate-like member, and the antenna is formed in the electrode layer of the plate-like member, the transmission / reception unit is the plate-like member. It can be embedded inside. Thereby, the timepiece component can be provided with the transmission / reception unit while preventing the thickness from increasing. Therefore, as compared with the configuration in which the transmission / reception unit is provided as a separate member, an increase in the size of the timepiece can be prevented by providing the transmission / reception unit.

1 is an external view of a timepiece according to a first embodiment. It is a perspective view of the dial plate concerning a 1st embodiment. It is sectional drawing in the III-III line of FIG. It is a perspective view of the case back cover concerning a 1st embodiment. It is a perspective view of the bezel concerning a 1st embodiment. It is process drawing of the manufacturing method of the dial plate which concerns on 1st Embodiment, Comprising: It is sectional drawing in the part corresponded to the III-III line of FIG. It is process drawing of the manufacturing method of the dial plate which concerns on 1st Embodiment, Comprising: It is sectional drawing in the part corresponded to the III-III line of FIG. It is process drawing of the manufacturing method of the dial plate which concerns on 1st Embodiment, Comprising: It is sectional drawing in the part corresponded to the III-III line of FIG. It is process drawing of the manufacturing method of the dial plate which concerns on 1st Embodiment, Comprising: It is sectional drawing in the part corresponded to the III-III line of FIG. It is explanatory drawing of the dial plate which concerns on 2nd Embodiment, Comprising: It is sectional drawing in the part corresponded to the III-III line of FIG. It is process drawing of the manufacturing method of the dial plate concerning 2nd Embodiment, Comprising: It is sectional drawing in the part corresponded to the III-III line of FIG. It is process drawing of the manufacturing method of the dial plate concerning 2nd Embodiment, Comprising: It is sectional drawing in the part corresponded to the III-III line of FIG. It is process drawing of the manufacturing method of the dial plate concerning 2nd Embodiment, Comprising: It is sectional drawing in the part corresponded to the III-III line of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, a mechanical timepiece will be described as an example.

[First Embodiment]
First, the timepiece, the movement, and the timepiece component of the first embodiment will be described.
In general, a machine body including a driving part of a timepiece is referred to as a “movement”. A state in which a dial and hands are attached to the movement, and put into a watch case to form a finished product, is referred to as “complete” of the watch.

FIG. 1 is an external view of a timepiece according to the first embodiment.
As shown in FIG. 1, the complete timepiece 1 of the present embodiment shows a movement 100 and information about time in a case back 3 made up of a case back cover 4 (see FIG. 4) and a glass 2. A dial 11 (clock part) having a scale and the like, and a pointer including an hour hand 12 indicating the hour, a minute hand 13 indicating the minute, and a second hand 14 indicating the second are provided. The dial 11 has a date window 11a for clearly indicating a number representing a date. Thereby, the timepiece 1 can check the date in addition to the time. In addition, an annular bezel 5 (timepiece component) is attached to the watch case 3.

  In the movement 100, a train wheel mechanism is disposed on a main plate (not shown). The train wheel mechanism includes a barrel wheel that rotates as a power source, and various gear bodies that rotate based on the rotation of the barrel wheel (not shown). The movement 100 rotates the hour hand 12, the minute hand 13 and the second hand 14.

FIG. 2 is a perspective view of the dial plate according to the first embodiment.
As shown in FIG. 2, the dial 11 includes a dial main body 21 (plate member) formed in a plate shape that forms the outer shape of the dial 11, and a transmission / reception unit 30 embedded in the dial main body 21. I have.

The transmission / reception unit 30 is used as an RFID (Radio Frequency IDentification: RFID) unit, and performs communication with an external device such as a reader / writer in a non-contact manner. The transmission / reception unit 30 includes an IC chip 31 (electronic component) and an antenna 33. The antenna 33 is formed in a coil shape from a metal material. The antenna 33 is continuously provided in a spiral shape so as to follow the outer periphery of the dial main body 21 while bypassing the date window 11a. Both ends of the antenna 33 are connected to the IC chip 31. Note that a portion where the antennas 33 overlap is prevented from being short-circuited by sandwiching an insulating film (not shown). The communication frequency of the transmission / reception unit 30 is set to 13.56 MHz, for example.
The IC chip 31 is an RFID chip defined in, for example, ISO7816. The IC chip 31 is disposed in an antenna 33 provided in a spiral shape.

FIG. 3 is a cross-sectional view taken along line III-III in FIG.
As shown in FIG. 3, the dial main body 21 is a flat base material including a first main surface 22a serving as a design surface of the dial 11 and a second main surface 22b opposite to the first main surface 22a. The electrode layer 23 laminated | stacked on the 2nd main surface 22b of the layer 22, the base material layer 22, and the insulating layer 24 which coat | covers the electrode layer 23 are provided.

  The base material layer 22 is made of, for example, a nonconductive material such as a resin material. The second main surface 22b of the base material layer 22 is formed with an electronic component housing portion 25 that is recessed from the second main surface 22b side toward the first main surface 22a side. The electronic component housing part 25 is formed corresponding to the outer shape of the IC chip 31. The IC chip 31 is disposed in the electronic component housing part 25 so that its terminal surface is exposed to the second main surface 22 b of the base material layer 22.

The electrode layer 23 is formed to a thickness of about several μm from a metal material such as silver. An antenna 33 is formed on the electrode layer 23. In the present embodiment, the entire electrode layer 23 serves as the antenna 33, and is formed on the second main surface 22 b of the base material layer 22. The electrode layer 23 is connected to the terminal of the IC chip 31 exposed from the base material layer 22.
The insulating layer 24 is formed to have a thickness of about several μm by applying a dielectric material such as a resin material. The dielectric constant of the insulating layer 24 is desirably about 1.2 to 1.8.

FIG. 4 is a perspective view of the case back cover according to the first embodiment.
As shown in FIG. 4, the case back cover 4 is formed in the same manner as the dial 11. Specifically, the case back cover 4 includes a back cover body 41 (plate-like member) formed in a plate shape so as to form the outer shape of the case back cover 4, a transmission / reception unit 50 embedded in the back cover body 41, It has. Similar to the dial main body 21, the back cover body 41 covers the base material layer 42 constituting the outer surface of the case back cover 4, the electrode layer 43 laminated on the inner surface of the base material layer 42, and the electrode layer. An insulating layer (not shown). The transmission / reception unit 50 includes an IC chip 51 and an antenna 53, similarly to the transmission / reception unit 30 embedded in the dial main body 21. The antenna 53 is an electrode layer 43 of the back cover body 41 and is continuously provided in a spiral shape inside the IC chip 51. Both ends of the antenna 53 are connected to the IC chip 51. The IC chip 51 is disposed in the electronic component housing part 45 of the base material layer 42. The communication frequency of the transmission / reception unit 50 is preferably set to a frequency different from the communication frequency of the transmission / reception unit 30, for example, 2.45 GHz.

FIG. 5 is a perspective view of the bezel according to the first embodiment.
As shown in FIG. 5, the bezel 5 is formed in the same manner as the dial 11. Specifically, the bezel 5 is formed in a thin annular shape. Similar to the dial 11 and the case back cover 4, the bezel 5 includes a bezel body 61 (plate member) formed in a plate shape so as to form the outer shape of the bezel 5, and a transmission / reception unit 70 embedded in the bezel body 61. And. Similar to the dial main body 21 and the back cover main body 41, the bezel main body 61 includes a base material layer 62 constituting a design surface of the bezel main body 61, an electrode layer 63 laminated on the inner surface of the base material layer 62, and electrodes And an insulating layer (not shown) for covering the layers. The transmission / reception unit 70 includes an IC chip 71 and an antenna 73 in the same manner as the transmission / reception unit 30 embedded in the dial main body 21. The antenna 73 is an electrode layer 63 of the bezel body 61 and is continuously provided in a spiral shape following the outer shape of the bezel body 61. Both ends of the antenna 73 are connected to the IC chip 71. The IC chip 71 is disposed in the electronic component housing portion 65 of the base material layer 62. The communication frequency of the transmission / reception unit 70 is preferably set to a frequency different from the communication frequency of the transmission / reception unit 30 and the transmission / reception unit 50.

Hereinafter, the manufacturing method of the dial 11 of 1st Embodiment is demonstrated. The manufacturing method of the case back cover 4 and the bezel 5 is the same.
6 to 9 are process diagrams of the dial plate manufacturing method according to the first embodiment, and are cross-sectional views taken along a line III-III in FIG.
The manufacturing method of the dial plate 11 of this embodiment removes the base member 81, the chip placement step of placing the IC chip 31 on the base member 81, the molding step of embedding the IC chip 31 on the base member 81 in the resin material, and the base member 81. A base removing step, an electrode forming step for forming the electrode layer 23, and a covering step for forming the insulating layer 24 are provided. Hereinafter, this manufacturing method is explained in full detail.

  First, a chip placement process is performed. As shown in FIG. 6, in the chip placement step, the IC chip 31 is placed on the base member 81. As the base member 81, it is desirable that the IC chip 31 can be fixed to the base member 81. For example, a double-sided tape or the like is suitable. The IC chip 31 is arranged so that its terminal surface faces the base member 81.

  Next, a molding process is performed. As shown in FIG. 7, in the molding step, the IC chip 31 is placed inside the mold (not shown) together with the base member 81, and the base material layer 22 is insert-molded with a resin material using the IC chip 31 as an insert product. Thereby, the electronic component housing part 25 corresponding to the outer shape of the IC chip 31 is formed in the base material layer 22. The mold has a shape corresponding to the outer shape of the dial 11 (see FIG. 2).

  Next, a base removal process is performed. As shown in FIG. 8, in the base removal step, the insert-molded base material layer 22 is taken out of the mold together with the IC chip 31, and the base member 81 is detached from the base material layer 22 and the IC chip 31. Thereby, the base material layer 22 in which the IC chip 31 is embedded is formed in a state where the terminal surface of the IC chip 31 is exposed from the base material layer 22 and is flush with the second main surface 22b of the base material layer 22. It is formed.

  Next, an electrode formation process is performed. As shown in FIG. 9, in the electrode forming step, the electrode layer 23 that matches the shape of the antenna 33 is formed on the second main surface 22 b of the base material layer 22 by ink jet printing, flexographic printing, or the like. Thereby, the antenna 33 is formed on the second main surface 22 b of the base material layer 22.

Next, a coating process is performed. In the covering step, the antenna material 33 (electrode layer 23) is covered by arranging a resin material on the second main surface 22b of the base material layer 22 by coating or the like.
Thus, the dial plate 11 shown in FIG. 3 is completed.

  As described above, according to the present embodiment, the timepiece 1 includes the transmission / reception units 30, 50, and 70. Therefore, the timepiece 1 can have a forgery prevention (authentication confirmation) function, a traceability function, and the like by non-contact communication. For example, the transmission / reception unit 30 of the dial plate 11 is used for communication of information for authenticity confirmation. The transmission / reception unit 50 of the case back cover 4 is used for communication of traceability information. The transmission / reception unit 70 of the bezel 5 is used for functions other than the forgery prevention function and the traceability function, and can be used for communication of owner information, for example. When the anti-counterfeiting function and the traceability function are used, the dial 11 of the watch 1 or the case back cover 4 is brought close to the reader / writer so that the reader / writer and the transmission / reception unit can communicate without contact. . As a result, it is possible to make the reader / writer read the authenticity confirmation and traceability information.

  According to the present embodiment, the dial 11 is provided with the electronic component accommodating portion 25 in which the IC chip 31 is accommodated in the base material layer 22 and the antenna 33 is formed in the electrode layer 23. 30 may be embedded in the dial main body 21. Thereby, the dial plate 11 can be provided with the transmission / reception unit 30 while preventing the thickness from increasing. Therefore, it is possible to prevent the timepiece 1 from being enlarged by providing the transmission / reception unit 30 as compared with the configuration in which the transmission / reception unit is provided as a separate member.

  Moreover, since the transmission / reception units 30, 50, and 70 are embedded in various timepiece components (the dial plate 11, the case back cover 4 and the bezel 5), the transmission / reception unit can be prevented from being exposed on the design surface, and the external appearance design It is possible to make a watch part having excellent properties.

  The transmission / reception units 30, 50, and 70 are embedded in various timepiece components (the dial plate 11, the case back cover 4, and the bezel 5). For this reason, it can be set as the timepiece provided with the transmission / reception unit by replacing | exchanging the timepiece components of the timepiece which is not provided with the transmission / reception unit with the various timepiece components of embodiment.

  Further, since the antenna 33 is formed on the surface of the base material layer 22 (second main surface 22b), a metal material is applied to the surface of the base material layer 22 by ink jet printing, flexographic printing, or the like, thereby forming a thin film shape. The antenna 33 can be easily formed. Thus, the transmission / reception unit 30 can be provided while preventing the thickness from increasing, and the dial 11 can be easily manufactured. Therefore, by providing the transmission / reception unit 30, it is possible to prevent the timepiece 1 from increasing in size and to make the timepiece 1 inexpensive.

  And according to the timepiece 1 of this embodiment, it can be set as the small-sized and thin timepiece 1 compared with the structure by which a transmission / reception unit is provided as another member.

  In the present embodiment, the base material layer 22 is formed of a resin material, but is not limited thereto. The base material layer should just be formed with the material which has insulation, for example, may be formed with inorganic materials, such as a ceramic. In this case, after forming the base material layer in which the electronic component housing portion is formed in advance, the IC chip 31 is disposed in the electronic component housing portion, so that the dial plate provided with the transmission / reception unit without performing insert molding. And other timepiece parts can be formed.

  In the present embodiment, the transmitting / receiving units 30, 50, and 70 are embedded in the dial plate 11, the case back cover 4 and the bezel 5, respectively. However, the present invention is not limited to this. It is sufficient that the transmission / reception unit is embedded in at least one of them. When the timepiece 1 includes a plurality of transmission / reception units, the communication frequency of each transmission / reception unit is set to a different frequency, and the communication distance of each transmission / reception unit is set to a different distance, so that communication between each other can be performed. Interference can be prevented.

[Second Embodiment]
Next, the timepiece part of the second embodiment will be described. In the following description, the dial 111 is described as an example of a watch part, but the same configuration may be applied to the case back cover and the bezel.

FIG. 10 is an explanatory diagram of the dial plate according to the second embodiment, and is a cross-sectional view of a portion corresponding to the line III-III in FIG.
In the first embodiment shown in FIG. 3, the antenna 33 is formed on the second main surface 22 b of the base material layer 22. On the other hand, the second embodiment shown in FIG. 10 is different from the first embodiment in that the antenna 133 is stacked and accommodated in the antenna accommodation portion 126 provided in the base material layer 122. In addition, about the structure similar to 1st Embodiment shown in FIGS. 1-3, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

As shown in FIG. 10, the base material layer 122 of the dial main body 121 is formed with an antenna housing portion 126 that is recessed from the second main surface 122b side toward the first main surface 122a side. The antenna accommodating portion 126 is formed in an annular shape along the outer periphery of the dial main body 121.
In the antenna accommodating portion 126, a coiled antenna 133 is accommodated as an electrode layer 123 by being stacked in a spiral shape in the thickness direction of the dial 111. A portion where the antennas 133 overlap is prevented from being short-circuited by sandwiching an insulating film (not shown).

Hereinafter, the manufacturing method of the dial 111 of 2nd Embodiment is demonstrated.
11 to 13 are process diagrams of a dial plate manufacturing method according to the second embodiment, and are cross-sectional views taken along a line III-III in FIG.
The manufacturing method of the dial plate 111 of the present embodiment includes a chip placement step of placing the IC chip 31 on the base member 81, an electrode formation step of forming the electrode layer 123 on the base member 81, and an IC chip on the base member 81. A mold process for embedding 31 in a resin material, a base removal process for removing the base member 81, and a coating process for forming the insulating layer 24. Hereinafter, this manufacturing method is explained in full detail.

  First, a chip placement process is performed. The chip placement process of this embodiment is performed in the same manner as the chip placement process of the first embodiment shown in FIG.

  Next, an electrode arrangement process is performed. As shown in FIG. 11, in the electrode forming step, an electrode layer 123 that matches the shape of the antenna 133 is spirally laminated on the base member 81 by ink jet printing. At this time, both ends of the antenna 133 are connected to the IC chip 31.

  Next, a molding process is performed. As shown in FIG. 12, in the molding process, the IC chip 31 and the antenna 133 are placed inside the mold (not shown) together with the base member 81, and the base material layer 122 is made of a resin material using the IC chip 31 and the antenna 133 as inserts. Insert molding. Thereby, the electronic component housing part 25 and the antenna housing part 126 corresponding to the outer shape of the antenna 133 are formed in the base material layer 122.

  Next, a base removal process is performed. As shown in FIG. 13, in the base removal step, the insert-formed base material layer 122 is taken out of the mold together with the IC chip 31 and the antenna 133, and the base member 81 is removed from the base material layer 122, the IC chip 31, and the antenna 133. Let go. Thereby, the IC chip 31 can be housed in the electronic component housing portion 25 and the antenna 133 can be housed in the antenna housing portion 126.

Next, a coating process is performed. The covering process of this embodiment is performed in the same manner as the chip arrangement process of the first embodiment.
Thus, the dial plate 111 shown in FIG. 10 is completed.

  As described above, according to the present embodiment, the stacked antenna 133 is accommodated in the antenna accommodating portion 126, thereby preventing the dial 111 from becoming thick and increasing the number of turns of the coil of the antenna 133. Can do. Thereby, the communication sensitivity of the transmission / reception unit 130 can be improved while preventing the thickness of the dial plate 111 from increasing. Therefore, by providing the transmission / reception unit 130, it is possible to prevent the timepiece 1 from being increased in size and to make a high-performance timepiece 1.

The present invention is not limited to the above-described embodiment described with reference to the drawings, and various modifications can be considered within the technical scope thereof.
For example, in the above-described embodiment, a dial plate, a case back cover, and a bezel have been described as examples of a timepiece component including a transmission / reception unit. However, the present invention is not limited thereto, and for example, a movement 100 such as a date wheel or a day wheel A similar configuration may be applied to the timepiece component provided.

  Moreover, in the said embodiment, although one transmission / reception unit is each embed | buried under various timepiece components (the dial plate 11, the case back cover 4, and the bezel 5), it is not limited to this. A plurality of transmission / reception units may be embedded in various timepiece components.

  In the above embodiment, a mechanical timepiece is described as an example of the timepiece 1. However, the timepiece is not limited thereto, and the timepiece may be an analog quartz type timepiece. However, in the mechanical type timepiece, since the movement is arranged without a gap inside the case, various types of timepiece parts in which the transmission / reception unit is embedded can be used more suitably in terms of preventing the size of the timepiece from being increased. .

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Clock 4 ... Case back cover (clock part) 5 ... Bezel (clock part) 11, 111 ... Dial (clock part) 21, 121 ... Dial main body (plate-shaped member) 22, 42, 62, 122 ... Base Material layer 23, 123 ... Electrode layer 24 ... Insulating layer 25 ... Electronic component housing 30, 50, 70, 130 ... Transmission / reception unit 31, 51, 71 ... IC chip (electronic component) 33, 53, 73, 133 ... Antenna 41 ... back cover body (plate member) 61 ... bezel body (plate member) 126 ... antenna housing

Claims (5)

A plate-like member;
A transmission / reception unit provided on the plate-like member and having an electronic component and an antenna;
With
The plate-like member is
A base material layer;
An electrode layer laminated on the base material layer;
An insulating layer covering the electrode layer;
With
The antenna is formed on the electrode layer,
The base material layer is provided with an electronic component housing portion capable of housing the electronic component.
Watch parts characterized by that. The antenna is formed on the surface of the base material layer,
The timepiece component according to claim 1, wherein: The base material layer is provided with an antenna accommodating portion that can be accommodated in a state where the antenna is laminated.
The timepiece component according to claim 1, wherein:   A movement comprising the timepiece part according to claim 1.   A timepiece comprising the timepiece part according to claim 1.

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