JP3535916B2 - Wrist-mounted pulse wave measuring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention relates to wrist-worn pulse wave measuring device capable of displaying pulse wave information such as pulse rate, more particularly, to a structure of the apparatus main body.

[0002]

2. Description of the Related Art In addition to wrist watches, runner watches with a stopwatch function, wrist-mounted portable radios with a clock function, etc. There is a device that optically detects a change in pulse rate and displays pulse wave information such as a pulse rate based on the detection result. In such an optical pulse wave measuring apparatus, a sensor unit including a light emitting element such as an LED (light emitting diode) and a light receiving element such as a phototransistor is attached to a finger or the like, and a finger or the like (blood vessel) of light emitted from the LED is attached. By receiving the light reflected from the phototransistor with a phototransistor, changes in blood volume are detected as changes in the amount of received light, and based on the detection result, the pulse rate and the like are displayed. Similar to wristwatches, portable devices also have a common point in that the device body having a flat back surface is attached to the wrist with a wristband.

[0003]

However, in the conventional arm-worn pulse wave measuring device (arm-worn portable device), it is necessary to prevent the device body from rotating around the arm with respect to the shape of the device body. Because no consideration was given to prevent it,
There is a problem that the device body unnecessarily turns around the arm while being worn on the arm. For example, when the arm-mounted pulse wave measuring device is mounted on the arm and running or the like is performed, the device body tends to shift to the outside of the arm due to its own weight. For this reason, in the conventional wrist-worn mobile device, despite increasing the functions that can be used when carrying a mobile phone,
There is a problem that the display surface is misaligned and it is difficult to see, and usability is poor. In particular, when a liquid crystal display device is used, the viewing angle is narrow, so that if the device body shifts, it becomes invisible. Also, the display cannot be seen unless the elbow is forced to bend.

In particular, a wristwatch for a runner is used not only during jogging or a marathon, but also in a wrist-worn pulse wave measuring device, which tends to be used for measuring a pulse wave during running. If the device body unnecessarily turns around the arm during running, the usability is extremely poor.

Therefore, as shown in FIG.
A thin plate 99 that is curved according to the shape of the arm is attached to the back side of 8, and when the device main body 98 is attached to the arm, the plate 99 is deformed and elastically contacted with the arm. A structure that prevents the arm from turning around is conceivable. However, in this structure, since the separate plate 99 is attached to the apparatus main body 98, the assembly work is troublesome, and since the plate 99 is completely adhered around the arm, the user feels sweaty. However, there is a problem that the wearing feeling is bad. Further, with this structure, if the wrist is too thin, the rotation preventing function is not exerted, while if the wrist is too thick, it feels cramped and the wearing feeling is poor.

In view of the above problems, the object of the present invention is to
Only to improve the shape of the apparatus main body, low cost, yet without impairing the wearing comfort, the apparatus main body is to provide a wrist-worn pulse wave measuring device has a rotate around the arms unnecessarily.

[0007]

In order to solve the above problems, according to the present invention, there is provided a device main body having a display section for displaying various information, and a wrist band for mounting the device main body on an arm. possess the door, the apparatus main body, a main body case with a close possible back surface on the upper surface of the wrist, extending from the main body case in the direction of 6 o'clock in the wristwatch, the device body by contact with the side surface portion of the wrist but only set the rotation stopper portion for regulating that rotates around the wrist, pulse on the display unit
A wrist-worn pulse wave measuring device that can display pulse wave information such as pulse rate
And with the light emitting unit and the light receiving unit facing the finger surface
And the sensor unit that extends from this sensor unit
Cable for inputting the light reception result of
And this cable can be attached to and detached from the main body of the device.
The connector means and the light receiving connection of the light receiving part built in the main body of the device.
Data for obtaining pulse wave information to be displayed on the display based on the result
And a connector processing means,
The first part is attached to the surface part of the part corresponding to the rotation stopping part of the surface part.
It is formed on the connector part that includes the terminal group and the end part of the cable.
The first terminal group when it is attached to the connector section.
A connector member including a second terminal group electrically connected to each other
With this connector member on the connector part,
If you slide it from 6 o'clock to 12 o'clock
First, engage the connector member with the connector section to connect
It is characterized in that an engaging mechanism for holding the connector member is provided on the connector portion .

Here, the back surface of the main body case may be in close contact with the upper surface of the wrist, and in use, the apparatus main body is on the lower surface side of the wrist (meaning the palm side of the wrist circumference). You may attach so that it may be located. In the present invention, the time direction of the wristwatch means only the direction of the device body, and does not mean that the display on the device body is of the pointer type.

In the present invention, the rotation stopping portion is about 105 ° to about 1 ° from the main body case to the back surface of the case.
It is preferable to extend so as to form an angle in the range of up to 25 °.

[0010]

[0011]

[0012]

[0013]

Further , in the present invention, a connector cover mounted on the connector portion is provided instead of the connector member.
The engagement mechanism is designed so that the connector cover
Sliding from 6 o'clock to 12 o'clock in the total
The connector cover and connector when engaged
To hold the connector cover on the connector
You may.

[0015]

[Action] In wrist-worn pulse wave measuring equipment according to the present invention,
In the 6 o'clock direction of the wristwatch of the device body, a rotation stop portion that prevents the device body from rotating around the wrist by contacting the side surface portion of the wrist, for example, about 105 ° with respect to the back surface portion of the body case. Since the device has a rotation stopping portion that makes an angle of about 125 ° from the above, when the device body is attached to the arm by the wristband, the back surface portion of the body case contacts the upper surface portion of the arm, while the rotation stopping portion Touch the side of. Therefore, in this state, even if the main body of the device is rotated around the arm, the rotation stopper remains in contact with the side surface of the arm and does not shift further. It does not shift further while being in contact with. Therefore, even if the user wears the wrist-worn pulse wave measuring device on the arm and runs, the device body does not shift, so that the display unit can be constantly looked into by simply bending the elbow slightly. Further, since the device body is not in a state of being completely in close contact with the arm, the wearing feeling is not impaired. Further, since the rotation is restricted only at two places around the arm, the anti-rotation effect can be surely obtained even if the arm is thin, and the cramped feeling is not felt even when the arm is thick. Moreover, the rotation stopper is just the device body (body case)
Can be configured integrally with. Therefore, according to the present invention, an arm- mounted pulse wave measuring device that does not unnecessarily rotate around the arm of the device body at low cost, without impairing the feeling of wearing, only by improving the shape of the device body. Can be realized.

In the wrist-worn pulse wave measuring device according to the present invention, when the connector means for detachably attaching the cable to the main body of the device is provided, the sensor unit is attached to the finger so that the pulse wave can be obtained even while running. In addition to being able to measure, it is convenient in everyday life because it can be used as an ordinary wristwatch by simply removing the cable from the device body by the connector means.

When the connector portion of the connector means is provided on the surface of the portion corresponding to the rotation stopping portion, the extended portion for providing the rotation stopping portion can be used as it is as a connector portion, which is unnecessary for the apparatus main body. It is not necessary to provide a protruding portion. Moreover, since the connector portion is located at the 6 o'clock position on the wristwatch, when the device body is worn on the wrist,
The connector means is on the front side when viewed from the user and is easy to operate. Further, since the connector means does not project from the main body of the device in the 3 o'clock direction on the wristwatch, the user can freely move his / her wrist during running, and even if the user falls down during running, the hand is the connector. Do not hit the means. Therefore, it is safe for the user and the connector means is not damaged. further,
Since the connector portion and the connector member are connected by the engagement mechanism, the cable will not accidentally come off during running.

Further, when the connector member is engaged with the wristwatch when it is slid on the connector portion from the 6 o'clock direction to the 12 o'clock direction, the rotation stopping portion prevents the connector member from rotating even when the mounting operation is performed. , The force is only applied in the direction in which the device body is more difficult to rotate. Therefore, even when the connector member is attached, the device body does not rotate around the wrist, and therefore the attaching operation is easy.

When a cover mounted on the connector portion is provided instead of the connector member, the first terminal group can be protected and looks good when the connector member is detached and used as a wrist watch in daily life. .

[0020]

An embodiment of the present invention will be described with reference to the drawings.

(Overall Structure) FIG. 1 is an explanatory view showing a usage state of the wrist-worn pulse wave measuring apparatus of this embodiment.

In FIG. 1, an arm-mounted pulse wave measuring device 1 (arm-mounted portable device) of this example is a device body 10 (device body) having a wristwatch structure, and a cable 20 connected to the device body 10. And a sensor unit 30 provided on the tip side of the cable 20. The device body 10 is provided with a wrist band 12 that is wound around an arm of the wristwatch from the 12 o'clock direction and fixed at the 6 o'clock direction.
0 is detachable from the arm. The sensor unit 30 includes a sensor fixing band 40 having a width of about 10 mm,
The sensor fixing band 40 is worn between the base of the index finger and the finger joint.

(Structure of Device Main Body) FIG. 2 is a plan view showing the device main body of the wrist-worn pulse wave measuring device of this embodiment with the wristband and cables removed, and FIG. 3 shows this device main body. It is a side view.

In FIG. 2, the apparatus main body 10 is provided with a resin watch case 11 (main body case). On the surface side of the watch case 11, in addition to the current time and date, the pulse rate and other pulses are displayed. A liquid crystal display device 13 (display unit) that digitally displays wave information and the like is configured. Inside the watch case 11, a data processing circuit 5 that performs signal processing on the detection signal in order to display changes in the pulse rate based on the detection result (pulse wave signal) by the sensor unit 30.
0 is built in, and the data processing circuit 50 and the liquid crystal display device 13 constitute an information display means 60. Further, since the data processing circuit 50 is also configured with a clock circuit, the information display means 60 can also display the normal time, lap time, split time, etc. on the liquid crystal display device 13. It should be noted that button switches 111 to 115 for adjusting the time and switching the display mode are formed on the outer peripheral portion of the watch case 11. Also,
Button switches 116, 1 are provided on the surface of the watch case 11.
17 are configured. The power source of the wrist-worn pulse wave measuring device 1 is the battery 59 built in the watch case 11,
The cable 20 supplies electric power from the battery to the sensor unit 30, and inputs the detection result of the sensor unit 30 to the data processing circuit 50 in the watch case 11.
A piezoelectric element 58 for emitting a notification sound is disposed in the wristwatch at 9 o'clock with respect to the battery 59.

(Structure for Preventing Rotation of Device Main Body) In FIG. 3, the device main body 10 is a stopper attached to the end of the wristband 12 in the 12:00 direction of the wristwatch on the outer peripheral portion of the watch case 11. A connecting portion 105 for holding the shaft 121 is formed. On the other hand, in the outer peripheral portion of the watch case 11, the wristband 12 wrapped around the arm is folded back at a midway position in the length direction in the 6 o'clock direction of the wristwatch, and the midway position of the wristband 12 is held. The receiving part 106 to which the fastener 122 for attaching is attached is formed.

In the present example, the portion of the wristwatch of the apparatus body 10 extending from the edge of the flat back surface 119 to which the battery lid 118 and the like are attached to the receiving portion 106 in the 6 o'clock direction is the watch case. 11 is integrally formed with the back surface portion 119 to form a rotation stopping portion 108 that makes an angle of about 115 °. Therefore, when the wrist-worn pulse wave measuring apparatus 1 of the present example is mounted by the wrist band 12 so that the apparatus body 10 is located on the upper surface L1 (back of the hand) of the left wrist L (arm), the watch case 11 Back side 119
Is in close contact with the upper surface L1 of the wrist L, while the rotation stopper 1
08 is brought into contact with the side surface portion L2 of the arm on the radius R side. In this state, the back surface portion 119 of the device body 10 feels to straddle the radius R and the ulna U of the arm through the skin,
Bending portion 109 between rotation stopper portion 108 and back surface portion 119
Is in contact with the radius R of the arm through the skin. In this way, the rotation stopping portion 108 and the back surface portion 119 are about 1
Since the anatomically ideal angle of 15 ° is formed, from the state shown in FIG. 3, the device body 10 is moved in the direction of the arrow A, that is, the device body 10 around the wrist L from the front side to the other side. Even if the anti-rotation portion 108 is turned to, the rotation stopping portion 108 does not shift further while being in contact with the side surface portion L2 of the wrist L. On the contrary, the device body 10 is moved in the direction of the arrow B, that is,
Even if the device body 10 is rotated around the wrist L toward the front side, the back surface portion 119 of the device body 10 has the upper surface portion L of the wrist L.
It stays in contact with 1 and does not shift further.

Moreover, since the device body 10 is not in a state of being completely in close contact with the wrist L and there is a partial gap between the device body 10 and the surface of the wrist L, even if the rotation stopping portion 108 is provided, the feeling of wearing can be improved. Is not damaged.

Here, the back surface portion 119 and the rotation stopping portion 108
From the anatomical point of view, it has been confirmed that if the angle formed by and is set in the range of about 105 ° to about 125 °, the device body 10 can be prevented from rotating around the arm.

The wrist-worn pulse wave measuring device 1 of this example is
The apparatus body 10 may be mounted so as to be located on the lower surface L3 (palm side) of the wrist L. In this case, the apparatus body 10
The rotation stopping portion 108 is in contact with the side surface portion L4 on the ulna U side of the arm. Even in this state, the device body 10
It does not rotate unnecessarily when a force is applied in either direction of arrow A or arrow B.

(Structure of Sensor Unit) FIG. 4A shows
FIG. 4B is a plan view of an optical unit of a sensor unit used in the wrist-worn pulse wave measuring device of the present embodiment. FIG. 4B shows a sensor fixing band of the sensor unit used in this wrist-worn pulse wave measuring device. FIG. 4C is a plan view showing a state, FIG. 4C is an explanatory diagram showing the structure of another sensor unit, and FIG. 5 is an explanatory diagram showing a state in which the sensor unit is attached to the base of a finger.

Referring again to FIG. 1, the sensor unit 30
Is composed of a sensor fixing band 40 and an optical unit 300. The sensor fixing band 40 is made of a flexible and thick resin molded product, and when the sensor fixing band 40 is rolled up and wound around the base of a finger, the hand is released as it is. Due to its own shape restoring force, it becomes a state of being wrapped around the base of the finger.

The substantially central portion of the sensor fixing band 40 is
Further, the hole 41 is thicker and a hole 41 for accommodating the optical unit 300 is formed therein.

In FIG. 4A, the optical unit 300
Is covered with resin in a rectangular shape having a pair of protrusions 311 and 312 on both sides.
The cable 20 is pulled out from the inside of 0.

On the other hand, in FIG. 4B, the hole 41 of the sensor fixing band 40 has such a shape and size that the optical unit 300 can be fitted therein, and when the optical unit 300 is fitted therein. , The protruding portion 311,
Recesses 411 and 412 into which 312 is fitted are formed to prevent falling. In addition, the sensor fixing band 40 is formed with four twisted portions 410 at the four positions so that it can be easily worn on a finger.

With respect to the sensor unit 30, from the viewpoint that it is only necessary to lightly grasp the hand even if it is attached to the base of the finger, there is no problem even if the width of the sensor fixing band 40 is about 20 mm. Further, as shown in FIG. 4C, the sensor fixing band 40 may have a structure in which only the width of the portion to which the optical unit 300 is attached is slightly wider.

In FIG. 5, in the optical unit 300,
The sensor frame 301 as the case body is covered with the back cover 302, and the inside thereof serves as a component storage space. A light transmission window is formed by a glass plate 304 (filter) on the upper surface of the sensor frame 301, and a circuit board 305 is fixed inside the sensor frame 301 so as to face the glass plate 304. Electronic components such as an LED 31, a phototransistor 32, and a transistor (not shown) are mounted on the circuit board 305. The LED 31 and the phototransistor 32 have their light emitting surface and light receiving surface facing the glass plate 304, respectively. I am aiming.

In this example, InGaN is used as the LED 31.
System (indium-gallium-nitrogen system) blue LED is used, and its emission spectrum is as shown in FIG.
It has an emission peak at 450 nm and its emission wavelength range is
It is in the range of 350 nm to 600 nm. In this example, a GaAsP-based (gallium-arsenic-phosphorus-based) phototransistor is used as the phototransistor 32 so as to correspond to the LED 31 having such light emission characteristics.
As shown in FIG. 7, the light receiving wavelength region of the device itself has a main sensitivity region in the range of 300 nm to 600 nm, and there is a sensitivity region even below 300 nm. Here, as the phototransistor 32, a sensor unit in which a filter is added to an element may be used, and an example of a light receiving wavelength region of such a sensor unit is, as shown in FIG. 8, a main sensitivity region from 400 nm to 550 nm. Is in the range. Since the LED 31 and the phototransistor 32 consume relatively little power, even when the timekeeping function and the pulse wave measuring function are driven by one small battery as in the wrist-worn pulse wave measuring apparatus 1 of this example, Long continuous operation time.

As shown in FIG. 5, the optical unit 3
00 is the glass plate 30 for the sensor fixing band 40.
4 is attached so as to face inward, so when the sensor fixing band 40 is attached to the base of the finger, the LED 31
And, the phototransistor 32 is in a state in which the light emitting surface and the light receiving surface thereof face the surface of the finger. Therefore, L
When light is emitted from the ED31 toward the finger, a living body (blood vessel)
The phototransistor 32 receives the light reflected from the phototransistor 32, and receives the light reception result (pulse wave signal).
Is input to the apparatus main body 10 via the cable 20, the apparatus main body 10 obtains the pulse rate from the pulse wave signal.

(Structure of Data Processing Circuit) That is, FIG.
In the data processing circuit 50, as shown in the block diagram, a part of the function of the data processing circuit configured inside the watch case, the pulse wave signal converter 51 is connected to the sensor unit 30 via the cable 20. The input signal is converted into a digital signal and output to the pulse wave signal storage unit 52. The pulse wave signal storage unit 52 is a RAM that stores the pulse wave data converted into a digital signal. The pulse wave signal calculation unit 53 reads the signal stored in the pulse wave signal storage unit 52, performs frequency analysis on the signal, and inputs the result to the pulse wave component extraction unit 54.
The pulse wave component extraction unit 54 extracts the pulse wave component from the input signal from the pulse wave signal calculation unit 53 and outputs it to the pulse rate calculation unit 55, and the pulse rate calculation unit 55 determines the frequency of the input pulse wave. The pulse rate is calculated by the component, and the result is calculated by the liquid crystal display device 1.
It is designed to output to 3.

(Structure of Connector Means) FIG. 10 is an enlarged view of the state in which the connector piece is attached to the connector portion as seen from the 3 o'clock direction in the wristwatch, and FIG. 11 is an electrode portion of the sensor circuit on the connector piece side, and It is explanatory drawing which shows the combination of this sensor circuit and the terminal by the side of a connector part for inputting / outputting a signal.

As shown in FIG. 1, the cable 20 and the sensor unit 30 are provided so that the wrist-worn pulse wave measuring apparatus 1 of this embodiment can be handled in daily life like a normal wristwatch.
The wristwatch of the device body 10 can be attached and detached on the surface side of the end portion located in the 6 o'clock direction. That is,
In FIG. 10, a connector portion 70 is formed on the surface side of the end portion of the device body 10 that extends as the rotation stopping portion 108 in the 6 o'clock direction of the wristwatch, and the cable 70 is provided there. The connector piece 80 (connector member) configured at the end of 20 can be mounted.

In the connector means utilizing the connector portion 70 and the connector piece 80, the connector portion 70
The electrical connection between the connector and the connector piece 80 is as shown in FIG.

In FIG. 11, terminals 751 to 756 are provided on the connector portion 70 formed on the apparatus main body 10 side.
(First terminal group), and these terminals 75
Corresponding to 1 to 756, the connector piece 80 is provided with electrode portions 831 to 836 (second terminal group).
Here, when the connector piece 80 is attached to the connector portion 70, the electrode portions 831 to 836 and the terminals 751 to 7
56 and 56 are electrically connected to each other. Among them, the terminal 752 is connected to the LED 3 via the electrode portion 832.
1 is a positive terminal for supplying the second drive voltage VDD to the terminal 1, the terminal 753 is a terminal to be a negative potential of the LED 31 via the electrode portion 833, and the terminal 754 is an electrode portion 83.
Terminal for supplying a constant voltage VREG for driving to the collector terminal of the phototransistor 32 via
Reference numeral 1 denotes a terminal to which a signal from the emitter terminal of the phototransistor 32 is input via the electrode portion 831, and a terminal 755.
Is a terminal to which a signal for detecting whether or not the connector piece 80 is attached to the connector portion 70 is input via the electrode portion 835. The electrode unit 836 is used in the sensor unit 3
When 0 is grounded to the human body and the terminal 756 and the electrode portion 836 are electrically connected, VDD is used as a ground line to shield the electrode portions 831 to 836.

Further, in the connector piece 80, the LED 3
The first capacitor C1 and the first switch SW1 are interposed between the first terminals (between the electrode portions 832 and 833). The switch SW1 is in a closed state when the connector piece 80 is detached from the connector portion 70, the first capacitor C1 is connected in parallel to the LED 31, and the switch SW1 is opened when the connector piece 80 is attached to the connector portion 70. It becomes a state. Similarly, the phototransistor 3
2 terminals between the two terminals (electrode portions 831 and 834)
The capacitor C2 and the second switch SW2 are inserted. This switch SW2 is a connector piece 8
When 0 is removed from the connector part 70, it becomes a closed state,
The second capacitor C2 for the phototransistor 32
Are connected in parallel, and the connector piece 80 is connected to the connector portion 70.
It will open when it is attached to the.

The structure of the connector means for attaching / detaching the connector piece 80 to / from the connector portion 70 having such a structure will be described with reference to FIGS. 12 to 15.

FIG. 12 is an enlarged view showing the structure of the connector piece formed at the end of the cable, FIG. 13 is an enlarged view of the connector section on the apparatus main body side, and FIG. 14 is a view showing the connector piece with respect to the connector section. FIG. 15 is an explanatory view showing the arrangement of the electrode parts on the connector piece side and the circuit pattern, which is a vertical cross-sectional view showing the combined state.

In FIG. 12, a pair of protrusions 81 and 82 projecting downward on both sides of the lower surface 801 of the connector piece 80 are formed. Four engaging pieces 811, 812, 821, 822 (second engaging projection group) project inward from the lower ends of the protruding portions 81, 82.

On the lower surface 801 of the connector piece 80,
Six electrode parts 831, 832, 833, 834, 83
5, 836 (second terminal group) are formed, and annular ridges 841, 842, 843, 844, and
845 and 846 are formed. Here, when the connector piece 80 is attached to the connector portion 70, the connector piece 80 is covered with the connector portion 70 and then the connector piece 80 is slid in the direction of arrow Q, as described later. Along the direction of arrow Q),
The electrode portions 831 to 836 are the electrode portions 831, 832, and 83.
3 and electrode portions 834, 835, 836 are formed in two rows. Further, in any of the columns, the electrode parts 831 to 8
36 is obliquely arranged so as to be displaced in a direction orthogonal to the sliding direction of the connector piece 80 (direction of arrow Q).

Further, on the bottom surface of the connector piece 80, two operation pins 837 and 838 for switching the circuit for preventing the influence of static electricity when the cable 20 is connected to the apparatus body 10 are formed. . The operating pins 837 and 838 have a tip protruding from the lower surface portion 801 of the connector piece with the connector piece 80 removed from the connector portion 70, as will be described later with reference to FIG. .

On the other hand, as shown in FIG.
The connector part 70 of the connector 70 has, on its side surface, engaging portions 71, 72, 73, 74 (first engaging projection group) that project outward.
Are formed. Therefore, the protruding portions 81 and 82 of the connector piece 80 are engaged with the engaging portions 71, 72 and 7 of the connector portion 70.
3, 74, which are located on the outer sides of the engaging portions 71 and 7
2 and between the engaging portion 73 and the engaging portion 74 so that the engaging pieces 811, 821 of the connector piece 80 are positioned, the connector piece 80 is covered with the connector portion 70, and then engaged. The connector piece 80 is inserted into the connector portion 7 so that the pieces 811, 821 pass through between the engaging portion 71 and the engaging portion 72 and between the engaging portion 73 and the engaging portion 74, respectively.
It is pressed toward 0 (first operation for mounting the connector piece 80 on the connector portion 70), and then in the direction of arrow Q (the mounting direction of the connector piece 80, the apparatus main body 1).
Connector piece 8 from 0 o'clock 6 o'clock direction to 12 o'clock direction)
When 0 is slid (second operation for mounting the connector piece 80 on the connector portion 70), the engaging portions 71, 7
Engaging pieces 811, 821 sneak under 3. Further, the engaging pieces 812 and 822 sneak under the engaging portions 72 and 74.
As a result, the engagement pieces 811, 821, 812, 822 are
The engaging portion 7 is provided between the connector piece 80 and the lower surface portion 801.
It becomes a state to hold 1, 72, 73, 74 respectively,
The connector piece 80 is easily and surely attached to the connector portion 70.

Here, each of the terminals 751 to 756 is, like the electrode portions 831 to 836, along the sliding direction of the connector piece 80 (direction of arrow Q), the terminals 751 and 752.
753 and terminals 754, 755, 756 are formed in two rows. Further, in each row, each terminal 751 to 75
6 is the connector piece 8 similar to the electrode parts 831 to 836.
It is obliquely arranged so as to be displaced in a direction orthogonal to the sliding direction of 0 (direction of arrow Q). Therefore, when the connector piece 80 is attached to the connector section 70, the six terminals 751 to 75 are corresponding to the six electrode sections 831 to 836.
6 can be electrically connected to each other, and the measurement result of the sensor unit 30 can be input to the apparatus main body 10 via the cable 20.

The terminals 751 to 756 and the electrode portions 831 to 836 are arranged in two rows along the sliding direction of the connector piece 80, and between the terminals and between the electrodes in the direction orthogonal to the sliding direction. Since the position between them is slanted, the connector piece 80 is attached to the connector portion 70.
Even if you slide it on, it does not correspond to terminals 751 to 75
6 does not come into contact with the electrode portions 831 to 836. Moreover, even if the formation area of the connector portion 70 is reduced,
Since the terminals and the electrode portions can be arranged at positions apart from each other, even if water enters between the connector piece 80 and the connector portion 70, it is difficult for the terminals and the electrodes to be short-circuited. In addition, terminals 752, 754, 7 to which drive voltage is applied
56 and the electrode portions 832, 834, 836 are arranged so as to be separated from each other, so that even if water enters between the connector piece 80 and the connector portion 70, terminals and electrodes having different potentials are formed. Between the departments,
Especially tracking does not occur. Therefore, the LED 31
Also, no overvoltage is applied to the phototransistor 32.

When removing the connector piece 80 from the connector portion 70, the connector piece 80 is slid in the opposite direction of arrow R. As a result, the engagement pieces 811, 821
Between the engaging portion 71 and the engaging portion 72, and the engaging portion 73.
And returns to the position between the engaging portion 74 and the engaging portion 74. Therefore, if the connector piece 80 is lifted as it is, the connector piece 80 can be easily and surely removed from the connector portion 70.

In this manner, when the connector piece 80 is slid on the connector portion 70, the connector piece 80 is engaged to maintain the state where the connector piece 80 is mounted on the connector portion 70, and from this state, the connector piece 80 is held. The engaging mechanism 700 is configured so that the engaged state is released when the is slid in the opposite direction (direction of arrow R). The engagement mechanism having such a structure has a small number of parts, but the engagement is reliable.

(Structure of Stopper Mechanism) As can be seen from FIG. 13, the engaging portions 71 to 74 have vertical walls 711 and 72 on the side in the direction of arrow Q when viewed from the side.
1, 731 and 741 are continuously formed. Therefore, when the connector piece 80 is slid in the direction of the arrow Q when the connector piece 80 is mounted on the connector portion 70 (second operation), the engaging pieces 811, 812, 82 are inserted.
1, 822 are vertical walls 711, 721, 731, 741
Abut the connector piece 80 to the connector portion 7
Stop at the 0 mounting position. Therefore, the vertical walls 711, 7
21, 731 and 741 function as a first stopper for the connector piece 80.

On the contrary, the connector piece 80 is attached to the connector portion 7
When it is slid in the direction of arrow R in order to remove it from 0, the engaging pieces 811, 821 abut against the back sides of the vertical walls 721, 741 of the engaging portions 72, 74, respectively, and the connector piece 8
0 is stopped at the original position of the connector section 70. Therefore,
The back sides of the vertical walls 721 and 741 function as a second stopper for the connector piece 80.

Therefore, the user can easily attach / detach the connector piece 80 to / from the connector portion 70 by groping. Further, since the user does not accidentally apply excessive force, the connector portion 70 and the like are not damaged.

(Structure of Terminal and Electrode Section) Connector Section 7
0, the terminals 751 to 756 are all holes 761, 762, 763, 76 formed in the connector section 70.
14, 765 and 766, and a cross section when cut at a position passing through the formation positions of the terminals 753 and 756, the operation pin 838, and the electrode portions 833 and 836 among them is shown in FIG. .

In FIG. 14, the connector piece 80 is
An outer case 805 capable of accommodating the circuit board 85 inside is covered with a lid member 806. The lid member 806 includes
Holes 863 and 866 are formed, and annular protrusions 843 and 846 are formed along the opening edge on the lower side thereof. Electrode portions 833 and 836 are arranged inside the holes 863 and 866. The electrode portion 833 is fixed by a screw 881, and the electrode portion 836 is fixed by being sandwiched between the circuit board 85 and the lid member 806. Waterproof packings 873 and 876 are attached to the electrode portions 833 and 836. The electrode portions 833 and 836 are electrically connected to the circuit pattern of the circuit board 85 arranged inside the connector piece 80. Such an electrode structure has electrode parts 833, 8
The same applies to the electrode parts 831, 832, 834, and 835 other than 36. In addition, on the circuit pattern of the circuit board 85,
The core wire of the cable 20 is also electrically connected by soldering.

(Construction of Click Mechanism) The connector portion 70 has a structure in which the recess is covered with the lid member 706.
Holes 763 and 766 are formed in the lid member 706. Inside these holes 763 and 766, terminals 753,
756 is arranged as an advance / retreat pin capable of advancing / retreating so that the tip end is projected from the holes 763 and 766. Collar 7 formed on the base side of each terminal 753, 756
Coil springs 773 and 776 are arranged for 83 and 786, and the terminals 753 and 756 are urged by the coil springs 773 and 776 in a direction projecting from the holes 763 and 766. . However, Tsuba 78
Since the outer diameter of 3, 786 is larger than the inner diameter of the holes 763, 766, the terminals 753, 756 will not come out of the holes 763, 766. This terminal structure has a terminal 7
Terminals 751, 752, 754, 75 other than 53, 756
5 is also the same.

In the terminal structure thus constructed, when the connector piece 80 is mounted on the connector portion 70, the connector piece 80 is slid on the connector portion 70, so that the terminals 753 and 756 are connected to the connector piece 8.
The annular ridges 843 and 846 of the coil spring 773,
The electrode parts 833, 8
Connect securely to 36. In addition, the ridge 84
3, 846, terminals 753, 756, and coil spring 7
Since the click mechanism is configured by using the 73 and 776 as they are, the connector piece 80 is connected to the connector portion 70.
Can be securely attached to. In order to configure such a click mechanism, contrary to the present example, a terminal using an advancing / retreating pin may be provided on the connector piece 80 side and a ridge portion may be provided on the connector section 70 side.

(Structure of Switch Mechanism) Further, the cover member 806 of the connector piece 80 has a hole 86.
8 is formed, and the operating pin 83 is provided in the hole 868.
8 are arranged. The actuating pin 838 is in a state capable of advancing and retracting inside the hole 868 so that the distal end thereof projects from the hole 868. A switch spring 88 in the form of a leaf spring is arranged with respect to the collar portion 898 formed at the base of the operation pin 838. The switch spring 88 biases the actuating pin 838 in a direction projecting from the hole 868 by the tip portion 885 thereof. However, since the outer diameter of the collar 898 is larger than the inner diameter of the hole 868, the operating pin 838 is
Cannot escape through hole 868. Switch spring 8
The base portion of 8 is fixed to the upper end surface of the electrode portion 833 with a screw 881 and is electrically connected to the electrode portion 833.

In FIG. 15, the tip portion 885 of the switch spring 88 is in contact with the base portion of the operating pin 838.
6 and a contact 887 formed in a portion protruding laterally therefrom. The contact 887 is provided on the circuit board 8
5 are electrically connected to the circuit pattern 852. Although not shown, the circuit pattern 852 is interposed between the first capacitor C1 and the electrode portion 833.

Therefore, when the connector piece 80 is not attached to the connector portion 70, the operating pin 838 is shown in FIG.
As shown by the solid line in FIG. 3, the tip end is pushed out by the switch spring 88 and protrudes from the hole 868.
8 contacts 887 are circuit patterns 852 of the circuit board 85.
Is electrically connected to. That is, in FIG. 11, the first pin is linked with the movement of the operating pin 838 indicated by the arrow.
The switch SW1 of is closed and the first capacitor C1 is
It is in a state of being electrically connected in parallel to the LED 31. Therefore, what is at a high potential due to static electricity is the electrode portion 83.
Even when touching 2, 833, the electric charge is stored in the first capacitor C1, so that the LED 31 is not damaged.

On the other hand, when the connector piece 80 is attached to the connector portion 70, the operating pin 838 moves in the direction of retracting into the hole 868 as shown by the chain double-dashed line in FIG. Is transformed as indicated by the chain double-dashed line. When the switch spring 88 is deformed in this way, the contact 887 is formed on the circuit pattern 8 of the circuit board 85.
It rises from 52, and the electrical connection is cut off. That is, in FIG. 11, when the connector piece 80 is attached to the connector portion 70, the first switch SW1
Is in an open state, and has a circuit configuration capable of measuring a pulse wave. Moreover, even if the electric charge is accumulated in the first capacitor C1, the electric charge is not discharged through the electrode portions 832 and 833 and the terminals 752 and 753, so that it is built in the connector portion 70 and the apparatus main body 10. Each circuit is not damaged.

Further, such a switch mechanism has a simple structure, but the connector piece 80 to the connector portion 70 is provided.
Reliably works with the mounting operation of.

The switch mechanism having such a configuration is
As shown in FIG. 11, it is also configured for the phototransistor 32, but the configuration uses an operating pin 837 and a switch spring 89 as in the switch mechanism for the LED 31, as can be seen from FIG. Therefore, the description thereof will be omitted.

(Construction of Connector Cover) FIG. 16 shows a case where the cable 20 and the sensor unit 30 are detached from the wrist-worn pulse wave measuring device 1 and used as an ordinary wristwatch, instead of the connector piece 80. FIG. 6 is an explanatory diagram showing a configuration of a connector cover 90 attached to the connector 70.
Unlike the connector piece 80, the connector cover 90 does not require an electrode portion, a sensor circuit, and a cable, and thus is thin overall and has a shape that does not impair the appearance when attached to the connector portion 70. However, the mounting structure for the connector portion 70 has the same configuration as the connector piece 80. That is, the lower surface portion 901 of the connector cover 90 is formed with a pair of protruding portions 91 and 92 that project downward on both sides thereof. Four engaging pieces 911, 912, 921, 922 (second engaging projection group) project inward from the lower ends of the projecting portions 91, 92. Further, on the lower surface portion 901 of the connector cover 90, the terminals 751 to 756 of the connector portion 70 are provided.
Terminals 751 to 756 corresponding to the positions where
And ridges 941 to 946 forming the click mechanism are formed.

When the connector cover 90 is attached to the connector portion 70, the engaging portion 71 is provided like the connector piece 80.
The connector cover 90 so that the engaging pieces 911 and 921 of the connector cover 90 are located between the engaging portion 72 and the engaging portion 72, and between the engaging portion 73 and the engaging portion 74.
Connector cover 90 so that the engaging pieces 911 and 921 pass through between the engaging portion 71 and the engaging portion 72 and between the engaging portion 73 and the engaging portion 74, respectively. When the connector cover 90 is pressed in the direction of arrow 70 and then the connector cover 90 is slid in the direction of the arrow Q (direction from 6 o'clock to 12 o'clock of the apparatus body 10), the engaging portions 71, 7
Engaging pieces 911 and 921 sneak into under 3. Further, the engaging pieces 912 and 922 sneak under the engaging portions 72 and 74.
As a result, the engagement pieces 911, 921, 912, 922 are
The engaging portion 7 is formed between the connector cover 90 and the lower surface portion 901.
The terminals 751 to 756 of the connector portion 70 pass over the ridge portions 941 to 946 and exert a click force while holding 1, 72, 73, and 74, respectively.
In this way, the connector cover 90 has the connector portion 7
It is in a state of being attached to 0.

(Operation) The operation of the wrist-worn pulse wave measuring device 1 thus constructed will be briefly described with reference to FIGS. 1 and 5.

First, in FIG. 1, when the wrist-worn pulse wave measuring apparatus 1 is used as a normal wristwatch, a cable 2 is used.
0 and the sensor unit 30 are removed by the connector portion 70 of the device body 10, the device body 10 is attached to the wristband 1
Wear on arm 2 At this time, the connector cover 90 shown in FIG. 16 is attached to the connector portion 70 to enhance its appearance and protect the connector portion 70.

On the other hand, when the pulse rate during running is measured using the wrist-worn pulse wave measuring device 1, after the connector piece 80 is attached to the connector portion 70 and the cable 20 is connected to the device body 10. The device body 10 is worn on the wrist with the wristband 12. Further, the sensor unit 30 (the glass plate 304 of the optical unit 300) is brought into close contact with the finger by the sensor fixing band 40, and then running is performed.

In this state, as shown in FIG.
When light is emitted from 1 toward the finger, the light reaches the blood vessel, and is partially absorbed by hemoglobin in the blood and partially reflected. The light reflected from the finger (blood vessel) is received by the phototransistor 32, and the change in the amount of received light corresponds to the change in blood volume caused by the pulse wave of blood. That is, when the blood volume is large, the reflected light becomes weaker,
As the blood volume decreases, the reflected light becomes stronger, so if the change in the reflected light intensity is monitored by the phototransistor 32, the pulse or the like can be detected. In order to perform such detection, the data processing circuit 50 shown in FIG.
The signal input from 2 (sensor unit 30) is converted into a digital signal, and the digital signal is subjected to frequency analysis or the like to calculate the pulse rate. Then, the pulse rate calculated is displayed on the liquid crystal display device 13. That is, the wrist-worn pulse wave measuring device 1 functions as a pulse meter.

Again, in FIG. 5, part of the light emitted from the LED 31 reaches the blood vessel through the finger as indicated by arrow C, and the reflected light from hemoglobin in the blood is indicated by arrow D. To reach the phototransistor 32.
The amount of light received through this path is the biological reflection amount. Also,
A part of the light emitted from the LED 31 is reflected on the finger surface as shown by an arrow E and reaches the phototransistor 32. The amount of light received through this path is the amount of skin reflection. Further, a part of the light emitted from the LED 31 and the light reflected from the blood vessel is absorbed or dispersed in the finger as shown by arrows F and G and does not reach the phototransistor 32.

Further, in the sensor unit 30, the LE having an emission wavelength range of 350 nm to 600 nm is used.
D31 and the phototransistor 32 having a light receiving wavelength range of 300 nm to 600 nm are used, and biometric information is displayed based on the detection result in the overlapping wavelength range of about 300 nm to about 600 nm. By using the sensor unit 30, of the light included in the outside light, the light having a wavelength range of 700 nm or less does not reach the phototransistor 32 (light receiving portion) using the finger as a light guide, while the light having a wavelength of 300 nm or less is used. , Almost absorbed on the skin surface. Therefore, the detection result is not affected by external light and is approximately 300n based on only the light of the light emitting unit.
Biological information can be measured from the detection result in the wavelength range from m to about 600 nm. From the viewpoint of obtaining pulse wave information without being affected by outside light, L
The ED31 has an emission wavelength range of 300 nm to 700
Phototransistor 32 with a range up to nm
As the light receiving wavelength region, a light receiving wavelength region of 700 nm or less may be used.

(Effects of the Embodiment) As described above, in the arm-mounted pulse wave measuring device 1 (arm-mounted portable device) of this embodiment, the device body 10 has the back surface 119.
Since the rotation stop portion 108 has an anatomically ideal angle of about 115 ° with respect to, the device body 10 may be rotated in the direction of arrow A or arrow B as described with reference to FIG. Even so, the rotation stopping portion 108 does not shift further from the side surface portion L2 of the wrist L, and the back surface portion 119 does not shift further from the upper surface portion L1 of the wrist L. Therefore, even if the arm-mounted pulse wave measuring device 1 is mounted on the arm and running is performed,
Since the device body 10 does not shift, the liquid crystal display device 13 can be constantly looked into by simply bending the elbow slightly. Moreover, since the device body 10 is not in a state of being in complete contact with the wrist L and there is a partial gap between the device body 10 and the surface of the wrist L, the device does not feel like sweating. Further, the back surface portion 119 and the rotation stopping portion 108 only regulate the rotation at two positions on one side around the arm. Therefore, even if your arm is thin,
Since the back surface portion 119 and the rotation stopping portion 108 surely come into contact with the arm, the rotation stopping effect can be surely obtained, and even if the arm is thick, it does not feel cramped. Further, the rotation stopper 108
May be integrally formed as the projecting portion of the watch case 11. Therefore, in the wrist-worn pulse wave measuring device 1 of the present example, only by improving the shape of the device body 10, the cost is low and
Unnecessary rotation of the device body 10 can be reliably prevented without impairing the feeling of wearing.

For the cable 20 extending from the sensor unit 30, this cable 20 is connected to the apparatus main body 10
Since connector means (connector section 70 and connector piece 80) that can be switched between the state connected to the device main body 10 and the state disconnected from the main body 10 of the device is provided, if the sensor unit 30 and the cable 20 are disconnected from the main body 10 of the device, a normal wristwatch is displayed. It is convenient because it can be used as

Further, the connector portion 70 is attached to the rotation stopping portion 10
Since it is formed on the surface portion of the portion corresponding to 8, the extended portion for providing the rotation stopping portion 108 can be used as it is as the connector portion 70. Therefore, it is not necessary to provide the device main body 10 with an extra projecting portion. Moreover, since the connector portion 70 is located in the 6 o'clock direction on the wristwatch,
When the device body 10 is worn on the arm, the connector portion 70
It is on the front side from the user's point of view and is easy to operate. Further, since the connector part 70 does not project from the device body 10 in the direction of 3 o'clock in the wristwatch, the user can freely move his / her wrist during running, and even if the user falls down during running, the back of the hand can be moved. Is the connector part 70
Don't hit. Therefore, it is safe for the user and the connector portion 70 is not damaged. Furthermore, since the connector portion 70 and the connector piece 80 are in a state of being coupled by the engagement mechanism, the cable 20
Does not come off accidentally.

The connector piece 80 is mounted when it is slid on the connector section 70 from the 6 o'clock direction to the 12 o'clock direction in the wristwatch. By the stopper 108,
The device body 10 is oriented so that it is more difficult to rotate. Therefore, when the connector piece 80 is mounted, the device body 10
Easy to wear as it does not rotate around the wrist.

Further, in the wrist-worn pulse wave measuring apparatus 1 of this example, the emission wavelength range of the LED 31 is from 350 nm to 600 nm.
The photosensing wavelength region of the phototransistor 32 has a main sensitivity region of 300 nm to 600 nm.
Range up to. On the other hand, the light receiving wavelength region when a unit in which an element and a filter are combined is used as the phototransistor 32 is in the range of 400 nm to 550 nm. Therefore, even if the pulse wave is measured in the simple light-shielded state shown in FIG. 1, of the light included in the outside light, the light in the wavelength region of 700 nm or less uses the finger as a light guide and the phototransistor 32 (light receiving unit). Since only light in the wavelength range that does not reach the point and does not affect detection passes through the finger as a light guide, in this example, even if external light hits the exposed portion of the finger, the pulse wave Since the influence of outside light does not affect the detection result of
It is possible to use the sensor unit 30 in which the sensor fixing band 40 having a narrow width shields the detection unit from light. Therefore, with the small sensor unit 30 as in this example, it is possible to hold the hand while being attached to the base of the finger, and there is no problem in running. Further, when the sensor unit 30 is attached to the base of the finger, the cable 20 can be short, so that the cable 20 does not become an obstacle during running. Therefore, the wrist-worn pulse wave measuring device 1 of this example is suitable for measuring the pulse rate during running.

When the distribution of the body temperature from the palm to the fingertip is measured, the temperature at the fingertip drops significantly when it is cold, while the temperature at the base of the finger does not drop relatively. That is, even in cold weather, blood flow does not significantly decrease at the base of the finger. Therefore, if the sensor unit 30 is attached to the base of the finger, the pulse rate and the like can be accurately measured even when running outdoors on a cold day.

Further, since the pulse wave information is obtained by using the light in the wavelength range from about 300 nm to about 700 nm, the S / N ratio of the pulse wave signal based on the blood volume change is high.

The reasons for these will be described below.

First, the reason why it is less likely to be affected by external light will be described with reference to FIG. FIG. 17A shows the relationship between the wavelength of light and the light transmittance of the skin. Here, a polygonal line a is a transmission characteristic of light having a wavelength of 200 nm, a polygonal line b is a transmission characteristic of light of a wavelength of 300 nm, a polygonal line c is a transmission characteristic of light having a wavelength of 500 nm, and a polygonal line d is a wavelength of 700 nm. The transmission characteristic of light, and the polygonal line e shows the transmission characteristic of light having a wavelength of 1 μm. As is clear from this figure, among the light included in the external light, the light having a wavelength range of 700 nm or less tends to hardly pass through the finger, and therefore the external light is not covered by the sensor fixing band 40. Even if the area is illuminated, the dotted line X
As shown by, does not reach the phototransistor 32 through the finger. Therefore, if light of 700 nm or less is used as the detection light as in this example, the influence of outside light can be suppressed by only covering the minimum necessary range without covering the finger with a large amount. The wrist-worn pulse wave measuring device 1 of the example can be used outdoors. Since light in the wavelength region lower than 300 nm is almost absorbed by the skin surface, the substantial light receiving wavelength region is 300 nm to 700 nm even if the light receiving wavelength region is 700 nm or less.

On the other hand, when an LED having an emission peak near 880 nm and a silicon-based phototransistor are used, the light receiving wavelength range thereof extends from 350 nm to 1200 nm as shown in FIG. Therefore, in the conventional optical system (detection device), of the external light, as shown by the arrow Y in FIG. 5, light having a wavelength of 1 μm that easily reaches the light receiving portion using the finger as a light guide, that is, Since the pulse wave is detected based on the detection result by the light indicated by the broken line e in FIG. 17A, erroneous detection due to the fluctuation of the external light is likely to occur.

Next, the reason why the S / N ratio of the pulse wave signal is high in the wrist-worn pulse wave measuring apparatus 1 of this example will be described with reference to FIG. 17 (b). FIG. 17B is an explanatory diagram showing the relationship between the wavelength of light and the light absorption characteristics of various hemoglobins.

In FIG. 17 (b), the absorption characteristic of hemoglobin not bound to oxygen is shown by the curve Hb, and the absorption characteristic of hemoglobin bound to oxygen is shown by the curve HbO2. As shown by these curves, hemoglobin in blood has a large absorption coefficient for light with a wavelength of 300 nm to 700 nm, and the wavelength of conventional detection light is 88.
It is several times to about 100 times greater than the extinction coefficient for 0 nm light. Therefore, as in this example, the wavelength region (300
When the light of (nm to 700 nm) is used as the detection light, the detected value changes sensitively to the change in blood volume, and thus the detection rate (S / N ratio) of the pulse wave based on the change in blood volume is high.

As the optical unit, as shown in FIG. 19, a GaP-based LED having a main light emitting region in the range of 540 nm to 570 nm and a light receiving sensitivity characteristic as shown in FIG. You may use the GaP type phototransistor which has a sensitivity region in the range of.

[0089]

As described in the foregoing, in the arm instrumentation <br/> adhesive pulse wave measuring equipment according to the present invention, in the direction of 6 o'clock in the wristwatch of the device body, by contact with the side surface portion of the wrist A rotation stopper that restricts the device body from rotating around the wrist, for example, about 105 ° with respect to the back surface of the body case.
It is characterized in that it has a rotation stopping portion that forms an angle of about 125 ° from. Therefore, according to the present invention, when the device body is attached to the arm by the wristband, the back surface of the body case contacts the upper surface of the arm, while the rotation stopper contacts the side surface of the arm. , Even when trying to rotate the main body of the device around the arm, the rotation stopper remains in contact with the side surface of the arm and does not shift further, and the back surface of the main body case remains in contact with the upper surface of the arm. As it is, it does not shift further. Therefore, even if the user wears the wrist-worn pulse wave measuring device on the arm and runs, the device body does not shift, so that the display unit can be constantly looked into by simply bending the elbow slightly. Also,
The body of the device is not completely in contact with the area around the arm, so that the feeling of wearing is not impaired. Further, since the rotation is restricted only at two places around the arm, the anti-rotation effect can be surely obtained even if the arm is thin, and the cramped feeling is not felt even when the arm is thick. Moreover, the rotation stopper can be configured integrally with the device body (body case). Therefore, according to the present invention, only to improve the shape of the apparatus main body, low cost, yet without impairing the wearing comfort, wrist-worn pulse wave apparatus main body do not want to rotate about the arm unnecessarily A measuring device can be realized.

In the wrist-worn pulse wave measuring device according to the present invention, when the connector means for making the cable detachable from the main body of the device is provided, the sensor unit is attached to the finger so that the pulse wave can be obtained even while running. In addition to being able to measure, it is convenient in everyday life because it can be used as an ordinary wristwatch by simply removing the cable from the device body by the connector means.

When the connector portion of the connector means is provided on the surface of the portion corresponding to the rotation stopping portion, the portion extended to provide the rotation stopping portion can be used as it is as a connector portion, which is unnecessary for the apparatus main body. It is not necessary to provide a protruding portion. Moreover, since the connector portion is located at the 6 o'clock position on the wristwatch, when the device body is worn on the wrist,
The connector means is on the front side when viewed from the user and is easy to operate. Further, since the connector means does not project from the main body of the device in the 3 o'clock direction on the wristwatch, the user can freely move his / her wrist during running, and even if the user falls down during running, the hand is the connector. Do not hit the means. Therefore, it is safe for the user and the connector means is not damaged. further,
Since the connector portion and the connector member are connected by the engagement mechanism, the cable will not accidentally come off during running.

Further, when the connector mechanism is engaged when the connector member is slid on the connector portion from the 6 o'clock direction to the 12 o'clock direction in the wristwatch, the rotation stop portion causes the device main body to engage. Is only applied in a direction that makes it more difficult to rotate. Therefore, even if the connector member is slid at the time of mounting, the device body does not rotate around the wrist, so that the mounting operation is easy.

When a cover mounted on the connector portion is provided instead of the connector member, the first terminal group can be protected and the appearance is good when the connector member is detached and used as a wrist watch in daily life. .

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a usage state of an arm-mounted pulse wave measuring device according to an embodiment of the present invention.

FIG. 2 is a plan view of a device body of the wrist-worn pulse wave measuring device shown in FIG.

FIG. 3 is a side view of the wristwatch-type pulse wave measuring device shown in FIG. 1 when viewed from the 3 o'clock direction of the wristwatch.

4 (a) is a plan view of an optical unit of a sensor unit used in the wrist-worn pulse wave measuring device shown in FIG. 1, (b).
Is a plan view showing a state where the sensor fixing band of the sensor unit used in this wrist-worn pulse wave measuring device is expanded,
(C) is an explanatory view showing the structure of another sensor unit.

5 is an explanatory diagram showing a state in which the sensor unit is worn on a finger in the arm-mounted pulse wave measuring device shown in FIG.

FIG. 6 shows In used in the wrist-worn pulse wave measuring device shown in FIG.
It is explanatory drawing which shows the emission spectrum of GaN-type blue LED.

FIG. 7 shows In used in the wrist-worn pulse wave measuring device shown in FIG.
It is explanatory drawing which shows the light receiving characteristic of a GaP type | mold phototransistor.

FIG. 8 is an explanatory diagram showing a light receiving characteristic of a phototransistor unit with a filter used in the wrist-worn pulse wave measuring device shown in FIG. 1.

9 is a block diagram showing a function of a data processing circuit of the wrist worn pulse wave measuring device shown in FIG. 1. FIG.

10 is an enlarged view of the connector portion of the wrist-worn pulse wave measuring device shown in FIG. 1 when viewed from the 3 o'clock direction of the wristwatch.

11 is an explanatory diagram showing an electrical connection relationship in a connector portion of the wrist worn pulse wave measuring device shown in FIG. 1. FIG.

12 is an explanatory view showing the structure of a connector piece used in the connector means shown in FIG.

13 is an explanatory diagram showing a structure of a connector portion used in the connector means shown in FIG.

14 is a cross-sectional view showing a state where the connector piece shown in FIG. 12 is attached to the connector portion shown in FIG.

FIG. 15 is a plan view showing the arrangement of electrodes in the connector piece shown in FIG.

16 is a perspective view showing the wrist-worn pulse wave measuring device shown in FIG.
It is explanatory drawing which shows the structure of the connector cover which covers a connector part instead of a connector piece.

17 (a) is a graph showing the relationship between the wavelength of light and the light transmittance of the skin, and FIG. 17 (b) is an explanatory view showing the relationship between the wavelength of light and the absorption characteristics of various hemoglobins. .

FIG. 18 is an explanatory diagram showing the light receiving characteristics of a silicon-based phototransistor used in a conventional wrist-worn pulse wave measuring device.

19 is a graph of G used in the wrist-worn pulse wave measuring device shown in FIG.
It is explanatory drawing which shows the emission spectrum of aP type LED.

20 is a graph of G used in the wrist-worn pulse wave measuring device shown in FIG.
It is explanatory drawing which shows the light receiving characteristic of an aAsP type | mold phototransistor.

FIG. 21 is an explanatory diagram of a rotation stopping structure of the apparatus body according to the reference example.

[Explanation of symbols]

1. Arm-worn pulse wave measuring device 10 ... Device body 11 ... Watch case (main body case) 12-Wristband 13 ... Liquid crystal display device 20 ... Cable 31 ... LED (light emitting part) 32 ... Phototransistor (light receiving part) 40 ... Sensor fixing band 70 ... Connector part 80: Connector member (connector piece) 108 ... Rotation stop 119 ... the back of the watch case 300 ... Optical unit 700 ... Engaging mechanism

Continuation of the front page (56) Reference JP 59-115025 (JP, A) JP 1-265939 (JP, A) JP 63-158039 (JP, A) JP 2-17030 (JP , A) JP-A-3-221030 (JP, A) JP-A-8-29554 (JP, A) Actually opened 63-122405 (JP, U) Actually opened 59-151182 (JP, U) Actually opened 62-164811 (JP, U) Actually opened 60-161887 (JP, U) Actually opened 59-98391 (JP, U) Actually opened 58-182180 (JP, U) Actually opened 3-8792 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A61B 5/0245 G04B 37/16 G04C 3/00 G04G 1/00 315

Claims (3)

(57) [Claims] 1. A device main body having a display unit for displaying various information, and a wrist band for mounting the device main body on an arm.
And, wherein the apparatus body includes a main body casing comprising an intimate possible back surface on the upper surface of the wrist, extending from the main body case in the direction of 6 o'clock in the wristwatch, said device body by contact with the side surface portion of the wrist e Bei a rotation stopper portion for regulating the rotating around the wrist, displayable arm mounting the pulse wave information such as pulse rate on the display unit
A pulse wave measuring device of a type, wherein a light emitting unit and a light receiving unit are placed in a state in which they are directed toward a finger surface.
And support units, before the light receiving result of the light receiving portion extending from said sensor unit
A cable for inputting to the device body, and a cable that allows the cable to be attached to and detached from the device body.
Based on the light reception result of the light receiving unit, which is built in the device main body.
Data processing for obtaining pulse wave information to be displayed on the display unit
And a sense circuit, said connector means, corresponding to the rotation stop portion of the surface portion of the device body
A connector part having a first terminal group on the surface part of the part and an end part of the cable, which is attached to the connector part
Are electrically connected to the first terminal group, respectively.
A connector member including a second terminal group, and the connector member in a wristwatch on the connector portion.
If you slide it from 6 o'clock to 12 o'clock
First, engage the connector member with the connector portion.
Engagement for holding the connector member on the connector portion
A wrist-worn pulse wave measuring device characterized by having a mechanism
Place 2. The rotation stopper according to claim 1, wherein the rotation stopper is about 105 ° to about 12 ° with respect to the back surface of the body case.
An arm-mounted pulse wave measuring device, which is extended so as to form an angle of up to 5 ° . 3. An apparatus according to claim 1 or 2, in place of the connector member have a connector cover to be attached to the connector portion, the engagement mechanism, put the connector cover to watch over the connector portion
Slide from 6 o'clock to 12 o'clock
When engaging the connector cover and the connector part
And hold the connector cover on the connector section.
Wrist-worn pulse wave measuring apparatus characterized by that.