JP2003325209A - Middle buckle for band, band, data communication equipment and portable watch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the degree of freedom in designing of the mounting object of a band, to avoid degrading of designing property when it is mounted, and to reduce a user's unnatural feeling. <P>SOLUTION: A middle buckle main body 15 as a middle buckle for the band for connecting the band 13 is provided with: a first electrode 21 to be in contact with the user U who is a living body; a second electrode 22 to be in contact with the user U similarly; and a data communication unit 23 for data communication with outside via the first electrode 21 and the second electrode 22 with the user U as a part of a transmission path. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clasp for a band, a band, a data communication device and a portable timepiece, and more particularly to a clasp for a band worn on a living body and used, a data communication device and a portable timepiece.

2. Description of the Related Art Conventionally, various data communication devices for performing data communication using a living body (particularly a human body) as a transmission path are known. In such a data communication device, the ease of communication is firstly developed, and when the user wears it,
In some cases, data is exchanged by contacting a predetermined signal terminal provided in a data communication device of a communication destination.

[0002]

As described above, in the above-mentioned conventional data communication device, when the data communication device is incorporated in the wristwatch body because it is portable, the freedom of design of the wristwatch body is lowered. There is a problem that it will happen. In addition, in order to avoid the above problems, when the data communication device is externally attached to the wristwatch, it will be attached to a band etc., but in the case of a band with high designability, it will impair the designability. However, a new problem occurs that the user feels uncomfortable. Therefore, an object of the present invention is to improve the degree of freedom in designing a band wearing object, and to reduce uncomfortable feeling of the user without lowering the designability at the time of wearing the band clasp, band, data. To provide a communication device and a mobile watch.

[0003]

In order to solve the above problems, in a clasp for a band for connecting band portions, a first electrode that comes into contact with a living body and a second electrode that comes into contact with the living body are provided. And a data communication unit that performs data communication with the outside via the first electrode and the second electrode by using the living body as a part of a transmission path when the band unit is connected. According to the above configuration, the data communication unit performs data communication with the outside through the first electrode and the second electrode with the living body as a part of the transmission path when the band unit is connected.

In this case, a first connecting part connected to one of the band parts and having the first electrode and the second electrode, and a second connecting part to the other band part and having the data communication part. A connecting portion may be provided.

Further, the first connecting portion is a state in which the first frame member having the first electrode formed thereon, the second frame member having the second electrode formed thereon, and the second connecting portion are connected together. It may have a locking member for stopping and to have a connecting member for connecting the 1st frame member and the 2nd frame member.

Further, the first frame member has a first contact terminal to which the first electrode is electrically connected, and the second frame member has a second contact to which the second electrode is electrically connected. A second contact portion, wherein the data communication portion includes a first contact portion electrically connected to the first contact terminal when the second connecting portion is locked and a second contact portion electrically connected to the second contact terminal. You may make it provide a contact part. According to the above configuration, the first contact portion of the data communication unit is electrically connected to the first contact terminal of the first connecting portion when the second connecting portion is locked. Further, the second contact portion of the data communication portion is electrically connected to the second contact terminal of the first connecting portion. As a result, in the state in which the second connecting portion is locked to the first connecting portion, the data communication unit uses the living body as a part of the transmission path, and the first electrode, the first contact terminal, the first contact portion, and the second connecting portion. Data communication is performed with the outside through the electrode, the second contact terminal, and the second contact portion.

Further, the first contact terminal and the second contact terminal are electrically conductive elastic members arranged so as to contact the electrodes from the back side of the corresponding electrodes, and penetrating holes formed in the corresponding frame members. A contact member provided in the hole so as to be in contact with the conductive elastic member, and a waterproof member for preventing liquid from entering the corresponding frame member through the through hole may be provided. . According to the above configuration, the waterproof member can prevent the liquid from entering the frame member, and the conductive elastic member can secure the conduction between the first contact terminal and the second contact terminal and the corresponding electrodes.

Further, the contact portion has a shaft portion and a collar portion formed on a peripheral surface of the shaft portion, and the waterproof member has a surface of the collar portion on the side of the through hole and a surface of the shaft portion. May be formed as an insulating elastic member arranged so as to be in contact with both a part of the above and the wall of the through hole facing them. According to the above configuration, the insulating elastic member can ensure good waterproofness and insulation.

Further, a part of the through hole may be a narrow diameter portion having a narrow diameter, and the shaft portion may be press-fitted into the narrow diameter portion together with the insulating elastic member.
According to the above configuration, further waterproofness can be secured.

Further, a first connecting portion connected to one of the band portions and having one of the first electrode and the second electrode, and connected to the other band portion, the first electrode or The other of the second electrodes and the second connection unit having the data communication unit may be provided.

The first connecting portion may be a cover member and the second connecting portion may be a clasp body.

Further, the band may be constructed by including the clasp for each band. Further, a data communication device or a mobile watch provided with this band may be configured.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Next, preferred embodiments of the present invention will be described with reference to the drawings. [1] First Embodiment FIG. 1 is a schematic configuration diagram of a data communication system of the embodiment. The data communication system 10 includes a wristwatch 1 mounted on a wrist of a user U with a band 13 having a communication function.
1, a band 13 and a user U are connected as a part of a transmission path, and a communication control device 12 that performs communication with the band 13 and performs various controls is provided.

FIG. 2 is an external perspective view when a part of the band 13 of the embodiment is attached. In addition, FIG. 3 shows the band 1
3 is an external perspective view of a part of No. 3 when not attached. FIG. Further, FIG. 4 is a partial cross-sectional view of the band 13 when a part thereof is not attached. The band 13 is roughly divided into band pieces (band portions) 14 and 14A, and Nakadome main body (second connecting portion) 15
And an upper lid (cover member; first connecting portion) 16. The clasp body 15 has a first electrode 21 on which the first electrode 21 is formed.
A frame body (first frame member) 15A, a second frame body (second frame member) 15B on which the second electrode 22 is formed, and a locking projection (locking member) 15C for locking the upper lid 16 are provided. And a connecting portion (connecting member) 15D for connecting the first frame body 15A and the second frame body 15B. In this case, in the first frame 15A, the upper lid 16 is locked to the connecting portion 15D by the locking projection 15C, that is, the band 1
In the mounted state of No. 3, the data communication unit (data communication unit) 23 provided in the upper lid 16 has a first electrode 2 to be described later.
A first contact terminal 41 for electrically connecting 1 is provided. Then, the first contact terminal 41 of the first frame body 15A
On the surface opposite to the side where the
A first electrode 21 functioning as a signal terminal is provided via the. Further, the second frame body 15B is provided with a second contact terminal 43 for electrically connecting a later-described second electrode 22 to the data communication unit 23 provided in the upper lid 16 when the band 13 is attached. Has been. And the second
The second electrode 22 that functions as a ground terminal is provided on the surface of the frame body 15B opposite to the side on which the second contact terminal 43 is provided via an insulating member.

Further, the portable timepiece 11 is mounted such that the first electrode 21 and the second electrode 22 are always in contact with the arm surface of the user U. The first electrode 21 and the second electrode 22 are made of a conductive material that can serve as electrodes. As the conductive material, noble metal such as gold, cemented carbide, stainless steel, titanium alloy, etc. are used. Further, the thickness of the first electrode 21 or the second electrode 22 is appropriately set in consideration of strength, workability, and designability required for carrying. As a result, it is possible to reliably ensure conduction with the living body as the user, and since there is no protrusion, the appearance of the band 13 is slim, and the user does not feel discomfort even if the band 13 has a communication function. Further, the first electrode 21 is
It is adhesively fixed to a predetermined surface of the first frame 15A by the adhesive insulating member 21A. As the adhesive insulating member 21A,
So-called adhesives, double-sided tapes, etc. can be considered. Similarly, the second electrode 22 is also adhesively fixed to a predetermined surface of the second frame pair 15B by an adhesive insulating member (not shown).
Further, the upper lid 16 is rotatably connected to the arm 18A by a connecting pin 19A, and the arm 18A and the clasp body 15 are rotatably connected by a connecting pin 19B. Similarly, the band piece 14A is rotatably connected to the arm 18B by a connecting pin 19C.
B and the clasp body 15 are rotatably connected by a connecting pin 19D. In this case, the band piece 14
A, Nakadome main body 15, arms 18A, 18B, connecting pin 1
9A to 19D constitute a clasp for the band (clasp clasp).

Here, the structure of the contact terminal will be described. Since the structures of the first contact terminal 41 and the second contact terminal 43 are the same, the first contact terminal 41 will be described as an example. FIG. 5 shows an enlarged view of the vicinity of the first contact terminal. The first contact terminal 41 has a substantially top shape having a flange portion 62 and a shaft portion 63, and the flange portion 62 is formed at a substantially central portion of the shaft portion 63. A conductive spring 66, which is a conductive elastic member, is arranged on the surface 62A of the collar portion 62 on the first electrode 21 side in a state capable of pressing the back surface and the surface 62A of the first electrode 21. On the other hand, on the surface 62B of the flange portion 62 on the side of the first frame 15A, the insulating elastic member 64 is arranged to be interposed between the through hole 42 and the inner peripheral surface thereof, and the narrow diameter portion 42 of the through hole 42 is provided.
One end of the shaft portion 63 of the first contact terminal 41 is press-fitted into A. Therefore, the insulating elastic member 64 ensures insulation between the first contact terminal 41 and the first frame body 15A, and prevents liquid such as water from entering the first frame body 15A from the first electrode 21 side. Also functions as a waterproof member. With such a configuration, the first contact terminal 41 is press-fitted into the through hole 42, and one tip 41A thereof is brought into contact with the first contact portion 23A (see FIG. 4) of the data communication unit 23, The surface 62 </ b> A of the collar portion 62 has the first surface via the conductive spring 66.
It is electrically connected to the electrode 21. Therefore, the first contact terminal 41 and the conductive spring 66 electrically connect the first electrode 21 and the circuit pattern forming the data communication unit 23. As a result, with the first contact terminal 41 and the insulating elastic member 64 ensuring waterproofness, the first contact terminal 4
The first and conductive springs 66 can secure electrical continuity with the first contact portion 23A and, by extension, with the circuit forming the data communication unit 23. Further, the adhesive insulating member 21
Even if part of A is peeled off, the first contact terminal 4
1, the conductive spring 66 and the insulating elastic member 64 can maintain the conductive state while ensuring waterproofness, and can continue the operation.

FIG. 6 is a schematic block diagram of the data communication unit 23. The data communication unit 23 roughly includes a first contact portion 23A, a second contact portion 23B, a signal transmitting / receiving portion 31, a modulation / demodulation portion 32, a wakeup signal detecting portion 33, a controller 34, a memory 35, and a battery 36. ing. The signal transmission / reception unit 31 outputs the reception signal from the first contact unit 23A as a modulation reception signal to the modulation / demodulation unit 32, and the modulation transmission signal from the modulation / demodulation unit 32 via the first contact unit 23A. It is transmitted to the communication control device 12 side. The modulation / demodulation unit 32 demodulates the modulated reception signal from the signal transmission / reception unit 31 to generate reception data in the controller 34.
And the transmission data from the controller 34 is modulated and output to the signal transmitting / receiving unit 31 as a modulated transmission signal. The wake-up signal detection unit 33 controls the communication control device 12 when the data communication unit 23 is in the power saving standby mode.
The wake-up signal input from the above through the first contact portion 23A is detected to shift the data communication unit 23 to the normal operation mode. In this case, in the power saving standby mode, the power from the battery 36 is supplied to the controller 34.
Is supplied only to a part of the control circuit and the wake-up signal detection unit 33, and is not supplied to the signal transmission / reception unit 31, the modulation / demodulation unit 32, and the memory 35.

The controller 34 is a CPU (not shown),
A ROM in which a control program is stored, a RAM for temporarily storing various data, and various input / output interfaces are provided to control the entire data communication unit 23, receive data from the communication control device 12, and the communication control device. The transmission data to 12 is managed. Memory 35
Is composed of a non-volatile memory such as EEPROM or NVRAM and stores various data. The battery 36 supplies power to the entire data communication unit 23 as a power source.

FIG. 7 shows a schematic block diagram of the communication control device 12. The communication control device 12 roughly includes a signal transmission / reception unit 51, a modulation / demodulation unit 52, a wakeup signal generation unit 53, a controller 54, a storage device 55, a touch panel display 56, a communication interface 57, and a power supply 58. The signal transmitting / receiving unit 51 uses the touch panel display 56 to transmit the data communication unit 23.
The modulation / demodulation unit 52 uses the received signal from the side as a modulated received signal.
And the modulated transmission signal from the modulation / demodulation unit 52 is transmitted to the data communication unit 23 side via the touch panel display 56. The modulation / demodulation unit 52 demodulates the modulated reception signal from the signal transmission / reception unit 51 and outputs it as reception data to the controller 54, and also modulates the transmission data from the controller 54 and outputs it to the signal transmission / reception unit 51 as a modulation transmission signal. To do.

The wakeup signal generator 53 generates a wakeup signal under the control of the controller 54.
It is sent to the data communication unit 23 side via the touch panel display 56. The controller 54 includes a CPU (not shown), a ROM that stores a control program, a RAM that temporarily stores various data, and various input / output interfaces, and controls the entire communication control device 12 and receives data from the data communication unit 23. It manages data and data transmitted to the data communication unit 23, controls communication with an external server computer via the communication interface 57, and the like. The storage device 55 includes an external storage device such as a semiconductor memory or a hard disk, and stores various data. Under the control of the controller 34, the touch panel display 56 transmits / receives various data to / from the data communication unit 23 and displays various information. The communication interface 57 provides a communication interface function with an external server computer or the like. The power supply 58 supplies electric power for operation to the entire communication control device 12.

Next, the general operation of the data communication system 10 will be described. In the following description, the user U
It is assumed that the mobile watch 11 is directly attached to the right wrist. Further, the data communication unit 23 is in the power saving standby mode, and the power from the battery 36 is supplied only to a part of the control circuit configuring the controller 34 and the wakeup signal detection unit 33. . FIG. 8 is an explanatory diagram of a wearing state of the band 13. User U
When the portable watch 11 is directly attached to the right wrist UR, as shown in FIG.
Touches the right wrist UR. Further, the first contact terminal 41 is electrically connected to the back surface of the first electrode 21 via a conductive spring 66.

In this state, the upper lid 16 is attached to the locking projection 1
The state in which the band 13 is locked to the connecting portion 15D by 5C, that is, the band 13 is attached, and the first contact portion 23A of the data communication unit 23 provided in the upper lid 16 is the first
It is electrically connected to the contact terminal 41. Similarly, top cover 1
The second contact portion 23B of the data communication unit 23 provided in the unit 6 is electrically connected to the second contact terminal 43.
Therefore, the first electrode 21 is electrically connected to the signal transmitting / receiving unit 31 and the wakeup signal detecting unit 33 of the data communication unit 23 via the conductive spring 66, the first contact terminal 41, and the first contact portion 23A. It will be. Similarly,
The second electrode 22 includes a second contact terminal 43 and a second contact portion 2
It will be connected to the controller 34 of the data communication unit 23 via 3B. Then, the user U brings the finger of the right hand into contact with the touch panel display 56 of the communication control device 12. As a result, as shown by a dotted line in FIG. 9, the touch panel display 56, the right hand of the user U, the first electrode 21, the conductive spring 66, the first contact terminal 41, the first contact portion 23A, and the inside of the data communication unit 23. Circuit, (second contact portion 23B, second contact terminal 43, conductive spring, second electrode 22, user U), ground GND, communication control device 1
The signal path is formed by the path of the internal circuit 2 and the touch panel display 56. At this time, the controller 54 of the communication control device 12 detects that the user U has touched the touch panel display 56, controls the wake-up signal generation unit 53 to generate a wake-up signal, and the touch panel display 56, the user U. Data communication unit 23 through the finger of the right hand UR
Send to the side.

As a result, the wake-up signal is input to the wake-up signal detector 33 via the first electrode 21, the conductive spring 66, the first contact terminal 41 and the first contact 23A of the data communication unit 23. The wakeup signal detection unit 33 detects the input wakeup signal, notifies the controller 34, and shifts the data communication unit 23 to the normal operation mode. As a result, in the power saving standby mode, the power from the battery 36 is supplied to the signal transmitting / receiving unit 31, the modulation / demodulation unit 32, and the memory 35 which were not supplied. Accordingly, the controller 34
Reads out predetermined data from the memory 35 according to a control program in a ROM (not shown), and the modulation / demodulation unit 3
2. The signal is sent to the communication control device 12 via the signal transmitting / receiving unit 31, the first contact portion 23A, the first contact terminal 41, the conductive spring 66, and the first electrode 21. That is, the controller 34 modulates predetermined transmission data read from the memory 35 (for example, arbitrary data such as ID data and command data according to the purpose of the data communication system 10) by the modulation / demodulation unit 32, and transmits / receives a signal. The first contact point 23A and the second
The voltage is applied between the contact portion 23B and, by extension, between the first electrode 21 and the second electrode 22.

On the other hand, the transmission / reception unit 51 of the communication control device 12
When the modulation voltage signal is input from the data communication unit 23 side via the touch panel display 56, the modulation / demodulation unit 52 demodulates the received modulation data by performing waveform shaping and amplification of the input modulation voltage signal. To the controller 54. This causes the controller 54 to
Based on a control program in a ROM (not shown), the storage device 55 stores received data, or controls such as opening a door via a communication interface and activating various devices. Further, if necessary, various information such as completion of authentication and permission to enter is displayed on the display screen of the touch panel display 56, and predetermined transmission data is modulated by the modulation / demodulation unit 52 to be transmitted / received by the signal transmission / reception unit. 51
Is amplified and transmitted as a modulated voltage signal to the data communication unit 23 side via the touch panel display 56.

As described above, according to the present embodiment, in the clasp main body 15 as the clasp for the band for connecting the band 13, the first electrode 21 that is in contact with the user U who is a living body. , The second electrode 22 that is also in contact with the user U and the first electrode 2 with the user U as part of the transmission path.
Since the data communication unit 23 for performing data communication with the outside via the first and second electrodes 22 is provided, the appearance of the mobile timepiece 11 is not impaired, and the data communication unit is provided in the mobile timepiece 11. Compared with, it becomes possible to perform data communication while ensuring the degree of freedom in designing the portable timepiece 11. In addition, since it is possible to provide the first electrode 21, the second electrode 22 and the data communication unit 23 in the clasp for the band, the influence on the design of the entire band is small, and the degree of freedom in designing the band itself is improved. And can be applied to various bands.

[2] Modification of Embodiment In the above description, the case of the so-called double-opening method (double-opening method) as the main clasp main body has been described as an example. Three-fold method that does not separate into two (usually three-fold method), three-fold method that can be easily attached and detached by operating the operation buttons provided on the side of the top lid (one-touch three-fold method), and the adjust position of the band can be freely set It can be applied to the clasp body of various methods such as the slide method, the band is separated into two, and the feeling of unity with the band can be expressed and a sense of unity can be obtained, such as the spring hook method used for the bangle type. It is possible.

In the above description, the first electrode 2
A first frame body (first frame member) 15A in which 1 is formed;
Second frame body (second frame member) 15B on which the electrode 22 is formed
And a locking projection (locking member) 15C for locking the upper lid (cover member) 16, the first frame 15A and the second frame 15C.
A first contact terminal 41 is provided, which is provided with a connecting portion (connecting member) D for connecting the frame 15B, and the first electrode 21 is electrically connected to the first frame 15A via a conductive spring 66. Two
The frame body 15B is provided with a second contact terminal 43 to which the second electrode 22 is electrically connected via a conductive spring (not shown), and the first contact terminal 41 when the upper lid 16 is locked to the data communication unit (data communication unit). First contact portion 23A electrically connected to
And the second contact portion 23B electrically connected to the second contact terminal 43 is provided, but for a band of a method in which the band is separated into two, such as a two-fold method or a spring hook method. In Nakadome, the first connecting part having the data communication unit (data communication part) is connected to the first connecting part at the time of connecting the band part constituting the band, and the first connecting part has the first electrode and the second electrode. Two connecting portions may be provided. Alternatively, in a clasp for a band of a system in which a band is completely separated into two band parts such as a two-fold system or a spring hook system, one of the first electrode and the second electrode and the data communication unit are provided. You may make it provide a 1st connection part and a 2nd connection part which is connected with a 1st connection part at the time of connection of a band, and has either the other of a 1st electrode and a 2nd electrode.

In the above description, the data communication unit (data communication unit) is attached to the Nakadome of the band of the portable watch.
However, the present invention is not limited to this, and it is also possible to adopt a configuration in which an accessory (such as a bracelet or anklet) that is worn in a state where it can directly contact various living bodies has a transmission / reception function.

Further, in the above description, the structure of incorporating the transmission / reception function is adopted, but except for the reception of the data wakeup signal, only the data transmission function is provided or only the data reception function is provided. It is also possible to do so. Further, in the above description, the data communication unit is configured to be in the power saving standby mode during non-communication, but the non-connection state of the band part is provided with a configuration for detecting a connection state such as a micro switch, In the unconnected state of the band part, it is also possible to cut off all power supply. As a result, power consumption can be further reduced and stable data communication can be performed over a long period of time. In the above description, only the case where a human being is used as the living body has been described, but the present invention is also applicable to living bodies such as animals other than humans.

[0030]

According to the present invention, it is possible to perform data communication while ensuring the degree of freedom in designing the wearing target without damaging the appearance of the wearing target of the band. Moreover, the influence on the design of the entire band is small, the degree of freedom in designing the band itself is improved, and it can be applied to various bands and eventually various mobile watches.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a data communication system according to an embodiment.

FIG. 2 is an external perspective view when a part of the band of the embodiment is worn.

FIG. 3 is an external perspective view when a part of the band is not attached.

FIG. 4 is a partial cross-sectional view of a part of the band when not attached.

FIG. 5 is a cross-sectional view of essential parts near the first contact according to the embodiment.

FIG. 6 is a schematic block diagram of a data communication unit.

FIG. 7 is a schematic configuration block diagram of a communication control device.

FIG. 8 is an explanatory diagram of a usage state of the embodiment.

FIG. 9 is an explanatory diagram of a signal path formation state in the data communication system according to the embodiment.

[Explanation of symbols]

10 ... Data communication system, 11 ... Portable timepiece (data communication device), 12 ... Communication control device, 13 ... Band, 1
4, 14A ... Band piece (band portion), 15 ... Nakadome main body (second connecting portion), 15A ... First frame body (first frame member), 1
5B ... 2nd frame (2nd frame member), 15C ... locking projection (locking member), 15D ... connecting part (connecting member), 16 ... upper lid (cover member; 1st connecting part), 21 ... 1st Electrode (back cover), 21A ... Adhesive insulating member, 22 ... Second electrode, 23 ...
Data communication unit, 23A ... First contact part, 23B ... Second contact part, 31 ... Signal transmitting / receiving part, 32 ... Modulation / demodulation part, 3
3 ... Wake-up signal detector, 34 ... Controller,
35 ... Memory, 36 ... Battery, 41 ... 1st contact terminal (contact part), 42 ... 1st through-hole, 42A ... Narrow diameter part, 43 ... 2nd
Contact terminal (contact part), 51 ... Signal transmitting / receiving part, 52 ...
Demodulation unit, 53 ... Wake-up signal generation unit, 54 ... Controller, 55 ... Storage device, 56 ... Touch panel display, 57 ... Communication interface, 58 ... Power supply, 6
2 ... Collar part, 64 ... Insulation elastic member, 66 ... Conductive spring (conductive elastic member)

Claims (12)

[Claims] 1. In a clasp for a band for connecting between band parts, a first electrode in contact with a living body, a second electrode in contact with the living body, and the body for transmitting when connecting the band parts. A clasp for a band, comprising: a data communication unit that performs data communication with the outside through the first electrode and the second electrode as a part of the path. 2. The clasp for a band according to claim 1, wherein the band connecting part is connected to one of the band parts, and the first connecting part having the first electrode and the second electrode is connected to the other band part. , A second connecting part having the data communication part, and a clasp for a band. 3. The clasp for bands according to claim 2, wherein the first connecting portion includes a first frame member on which the first electrode is formed, and a second frame member on which the second electrode is formed. A connecting member for connecting the first frame member and the second frame member, the connecting member having a locking member for locking the second connecting portion in a connected state. Nakadome for band. 4. The clasp for bands according to claim 3, wherein the first frame member includes a first contact terminal to which the first electrode is electrically connected, and the second frame member is the first frame member. Two electrodes are provided with a second contact terminal electrically connected, and the data communication unit includes a first contact unit electrically connected to the first contact terminal when the second connecting member is locked, and the first contact unit. A clasp for a band, comprising a second contact portion electrically connected to a two-contact terminal. 5. The clasp for bands according to claim 4, wherein the first contact terminal and the second contact terminal are arranged so as to contact the electrode from the back surface side of the corresponding electrode, A contact portion provided in the through hole formed in the corresponding frame member so as to contact the conductive elastic member, and a waterproof for preventing liquid from entering the corresponding frame member through the through hole. A clasp for a band, comprising: a member and. 6. The clasp for bands according to claim 5, wherein the contact portion has a shaft portion and a flange portion formed on a peripheral surface of the shaft portion, and the waterproof member is provided on the through hole side. It is formed as an insulating elastic member arranged so as to be in contact with both the surface of the flange portion and a part of the surface of the shaft portion, and the wall of the through hole that faces them, and the clasp for a band characterized by the above-mentioned. . 7. The clasp for bands according to claim 6, wherein the through-hole is a narrow-diameter portion having a small diameter, and the shaft portion is provided in the narrow-diameter portion together with the insulating elastic member. Nakadome for band, which is press-fitted. 8. The clasp for a band according to claim 1, wherein the first coupling part is coupled to one of the band parts and has one of the first electrode and the second electrode, and the other band. A clasp for a band, comprising: a second coupling part that is connected to a part and has the other one of the first electrode or the second electrode and the data communication part. 9. The clasp for a band according to claim 2, wherein the first connecting portion is a cover member, and the second connecting portion is a clasp main body. Nakadome for band. 10. A band comprising the clasp for a band according to any one of claims 1 to 9. 11. A data communication device comprising the band according to claim 10. 12. A portable timepiece comprising the band according to claim 10.