JPH0910183A - Portable device and arm mounting type pulse wave measuring apparatus - Google Patents

Abstract

PURPOSE: To provide a portable device and an arm mounting type pulse wave measuring apparatus which enable formation of a resonance chamber while the body of the device is kept thinner and lighter and moreover enable, the generation of a large annunciation sound, and further, which prevent a sound releasing hole from being closed even when the body of the apparatus is mounted on an arm and allows the draining of water simply even when it enters into the resonance chamber. CONSTITUTION: On the back side of a timepiece case 11 of an arm mounting type pulse wave measuring apparatus, recessed parts 152 and 153 sectioned by a reinforcing rib 154 are arranged on the rear side of a first back lid 15 and covered with a second back lid 16 laminated on the rear side of the first back lid 15 to form a resonance chamber. The recessed parts 152 and 153 are formed to reach an end rim 159 of the first back lid 15 and opened as first sound releasing hole between the end rim 159 of the first back lid 15 and the end rim 169 of the second back lid 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable device capable of generating a predetermined alarm sound and an arm-mounted pulse wave measuring device capable of displaying pulse wave information such as pulse rate. The present invention relates to a structure technology of a notification sound generating unit.

[0002]

2. Description of the Related Art As a device worn by a user on his arm or in a pocket, a wristwatch, a runner's wristwatch with a stopwatch function, a wrist-worn or pocket-storable small portable radio device, and There is a wrist-worn pulse wave measuring device that optically detects a change in blood volume and displays pulse wave information such as a pulse rate based on the detection result. With such a mobile device, users can be alerted,
A notification sound is emitted when a predetermined operation is performed. Here, in a portable device, a small and thin case has to be used as a case of the device body so that it can be easily stored in a pocket or the like, and if it is an arm-mounted type, it can be easily worn on the arm. There is no restriction. Therefore, in order to generate the notification sound, instead of using a small and thin piezoelectric element or the like that can be housed in such a case, the apparatus body is provided with a resonance chamber for expanding the notification sound generated by the piezoelectric element. This compensates for the low sound emitted by the piezoelectric element. In constructing such a resonance chamber, for example,
As disclosed in Japanese Patent Laid-Open No. 53-86264, as shown in FIG. 22, a second back cover is provided with a predetermined gap from a first back cover 97 that covers the back side of the case 96. 9
It is conceivable to cover 8 of these and use the gap between these back covers as the resonance chamber 99. A sound emitting hole 981 for emitting a notification sound is formed in the second back cover 98.

[0003]

However, as shown in FIG.
In the structure of the resonance chamber 99 shown in FIG.
There is a problem in that the apparatus main body becomes thicker by the amount of the gap provided between Nos. 7 and 98. Also, the second case back 98
Since it is necessary to form the second back cover 98 with a considerably thick stainless plate so as not to be dented, there is a problem that the apparatus main body becomes thick and heavy. Further, in order to prevent the piezoelectric element 971 from being broken even if the device body is dropped, the first back cover 97 needs to be formed of a relatively thick stainless plate of about 0.8 mm to 1.0 mm.
Not only is the apparatus body thick and heavy, but there is also the problem that the vibration from the piezoelectric element 971 does not efficiently reach the resonance chamber 99 and the alarm sound is small.

Further, in the conventional structure, when the apparatus main body is attached to the arm, the sound emitting hole 981 provided in the second case back 98 is blocked by the arm, and the alarm sound becomes small. is there. Therefore, as shown by the dotted line in FIG. 22, by providing the sound emitting hole 983 in the inclined portion 982 near the edge of the second case back 98, the sound emitting hole 983 can be formed even when the apparatus main body is mounted on the arm. A structure that does not block it is conceivable. However, in any structure, if water enters the inside of the resonance chamber 99 when exposed to rain or the like, no matter how much the device body is tilted or shaken,
There is a problem that water cannot be discharged from the resonance chamber 99.

[0005] In view of the above problems, an object of the present invention is to provide:
First, it is an object of the present invention to provide a portable device and a wrist-worn pulse wave measuring device that can form a resonance chamber while keeping the device main body thin and lightweight and generate a large notification sound.

Further, the object of the present invention is to provide a portable device in which the sound emitting hole is not closed even when the device body is mounted on the arm or the like, and water can be easily taken out even if water enters the resonance chamber. And to provide a wrist-worn pulse wave measuring device.

[0007]

In order to solve the above problems, according to the present invention, in a portable device using a thin case capable of generating an alarm sound from the device body, the device body is provided on the back side of the case. A first back cover located, a second back cover overlaid on the back side of the first back cover, and an alarm sound generation disposed on the front side of the first back cover facing the case. Sound generating element, a resonance chamber for an alarm sound generated by the sound generating element, and a sound emission hole opening from the resonance chamber to the outside, and the first back cover is recessed on the back side to generate the sound generating element. A resonance chamber is formed by forming a recess having a thin portion in a predetermined region of the first back cover corresponding to the arrangement position and covering the recess with the second back cover.

In the present invention, the recess is formed so as to reach the edge of the first back cover, so that the recess is provided with the edge of the first back cover and the edge of the second back cover. It is preferable to open as a sound output hole between and.

In the present invention, the resonance chamber is divided into a plurality of sections by the reinforcing ribs formed in the recess forming region,
It is preferable that the sound emission holes are opened to the outside from any of the resonance chambers.

According to the present invention, the portable device can be constructed as an arm-mounted type portable device by providing the wrist band for attaching the device main body to the arm with the second case back facing the arm surface. In this case, the sensor unit in which the light emitting unit and the light receiving unit are directed toward the finger surface, the cable extending from the sensor unit for inputting the light receiving result of the light receiving unit to the device body, and the built-in device body The portable device can be used as an arm-mounted pulse wave measuring device by providing a data processing unit that obtains pulse wave information to be displayed on the display unit provided in the device body based on the light reception result of the light receiving unit. .

[0011]

In the portable device according to the present invention, on the back side of the case, the first back cover is provided with the sounding element for generating the alarm sound on the front side facing the inside of the case, while the back side thereof is
A resonance chamber is formed by providing a concave portion and covering the concave portion with a second back lid that is placed on the back surface side of the first back lid.
Therefore, in the region where the concave portion is not formed, the first back cover and the second back cover are overlapped with each other, and thus the strength is equivalent to the sum of their thicknesses. Further, in the region where the concave portion is formed, since there is a gap (resonance chamber) between the second back lid and the first back lid, the first back lid and the second back lid are provided. Has only the strength corresponding to each thickness, but since such a portion is partially present in each case back, each of the first case back and the second case back has sufficient strength. Have. Therefore, it is not necessary to thicken the first and second case backs, so that the resonance chamber can be configured while keeping the apparatus body thin and lightweight.

Further, since the first back cover and the second back cover are not arranged with a gap therebetween but substantially completely overlap with each other except the resonance chamber portion, Occupy only the thickness of the first and second case backs. Therefore, the resonance chamber can be configured while keeping the apparatus body thin.

Further, the portion of the first back cover where the sounding element is arranged is thin because it is recessed from the back surface side.
Therefore, the vibration from the sounding element efficiently reaches the resonance chamber, so that a large alarm sound can be generated.

In the present invention, when the concave portion is formed so as to reach the edge of the first back cover, the concave portion includes the edge of the first back cover and the edge of the second back cover. It will be opened as a sound output hole between. Therefore, the sound output hole is not blocked even when the device body is attached to the arm. Also, since there is a sound emission hole that opens at the side end of the device body, if you add sound emission holes at other places, you can tilt or shake the device body when water enters the resonance chamber. For example, water easily exits through the sound output holes on the side edges.

When the resonance chamber is divided into a plurality of portions by the reinforcing ribs, the strength of the first back cover in the portion where the recess is formed can be increased and the reinforcing ribs can be used to form the second back cover. The structure supports the lid.

[0016]

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

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

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 band-shaped wrist band 12 made of natural leather, synthetic leather, synthetic fiber sheet, natural fiber sheet, etc., which is wound around the wrist from the 12 o'clock direction and folded back at the 6 o'clock direction. The device body 10 can be attached to and detached from the arm by one wristband 12. The sensor unit 30 includes a sensor fixing band 40 having a width of about 10 mm, and is mounted between the base of the index finger and the knuckle by the sensor fixing band 40.

(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. FIG. 4 is a bottom view and FIG. 4 is an explanatory view of the main body of the apparatus as viewed from the 6 o'clock direction of the wristwatch.

In FIG. 2, the apparatus main body 10 is provided with a thin watch case 11 (main body case) made of resin. On the surface side of the watch case 11, in addition to the current time and date, the pulse rate, etc. A liquid crystal display device 13 (display unit) that digitally displays the pulse wave information and the like is configured. Inside the watch case 11, there is built-in a data processing unit 50 that performs signal processing on the detection result for the purpose of displaying a change in the pulse rate based on the detection result (pulse wave signal) by the sensor unit 30. The processing section 50 and the liquid crystal display device 13 constitute the information display means 5. Further, since the data processing section 50 is also configured with a time counting circuit, the information display means 5 can also display information such as normal time, lap time, and split time on the liquid crystal display device 13.

Button switches 111 to 115 for adjusting the time and switching the display mode are formed on the outer periphery of the watch case 11. Button switches 116 and 117 are formed on the surface of the watch case 11. The power source of the wrist-worn pulse wave measuring device 1 is a button type battery 59 built in the watch case 11, and the cable 20 is connected from the battery 59 to the sensor unit 30.
Is supplied to the data processing unit 50 in the watch case 11 while the power is supplied to the sensor unit 30.

In the arm-worn pulse wave measuring device 1, it is necessary to increase the size of the device main body 10 as its function is increased. However, the device main body 10 has a restriction that it is worn on the arm. The device body 10 cannot be enlarged in the direction of 6 o'clock and 12 o'clock in the wristwatch. Therefore, in this embodiment, the device body 10 uses a horizontally long watch case 11 whose length dimension in the directions of 3 o'clock and 9 o'clock is longer than the length dimension in the direction of 6 o'clock and 12 o'clock.

The wristband 12 is connected to the watch case 11 at a position deviated from the center position C of the watch case 11 in the 3 o'clock and 9 o'clock directions toward the 3 o'clock direction. Therefore, when viewed from the wristband 12, the device main body 10 has the large overhanging portion 101 in the 9 o'clock direction of the wristwatch, but the large overhanging portion is not in the 3 o'clock direction. Therefore, it is possible to freely bend the wrist instead of using the horizontally long watch case 11, and the wearing feeling is good. Moreover, since there is no large overhanging portion in the 3 o'clock direction, the back of the hand will not hit the watch case 11 even if it falls. Further, the large overhanging portion 101 located in the 9 o'clock direction is supported in close contact with the arm surface on the elbow side, so that the arm-mounted pulse wave measuring apparatus 1 is in a stable state. Therefore, even if the horizontally long watch case 11 is used,
There is no need to use an unnecessarily wide wrist band 12.

3 and 4, inside the watch case 11, a flat battery 59 as a power source and a flat piezoelectric element 58 (sound producing element) for a buzzer (for generating an alarm sound) are arranged in the plane direction ( Since they are arranged side by side in the wristwatch at 3 o'clock and 9 o'clock), the device main body 10 can be made thin, and the battery lid 118 is provided on the back surface 119 of the device main body 10 so that the user can easily replace the battery 59. The structure is possible.

The battery 59 is arranged at a position deviated in the 3 o'clock direction from the center position C, whereas the piezoelectric element 58 is arranged in a position deviated in the 9 o'clock direction from the center position C. It is located in. Since the battery 59 is heavier than the piezoelectric element 58, the center-of-gravity position G of the apparatus body 10 in the 3 o'clock and 9 o'clock directions is offset from the center position C in the 3 o'clock direction. Therefore, since the wristband 12 is connected to the side where the center of gravity is deviated, the device body 10 can be stably attached to the arm.

As can be seen from FIG. 4, the piezoelectric element 5
8 and the battery 59, the analog circuit substrate 501 and the digital circuit substrate 502 in which the data processing unit 50 is formed are arranged so as to overlap with each other, and the liquid crystal display device 13 is arranged so as to overlap with the surface side thereof. ing. Further, on the front surface side of the liquid crystal display device 13, the cover glass 13
1 is covered.

(Structures of Back Side of Device Main Body, Resonance Chamber, and Sound Release Hole) FIG. 5 is an exploded perspective view for explaining the structure of the back side of the device main body, and FIG. 6 is a back cover of this back side. FIG. 6 is a cross-sectional view schematically showing the structure of a resonance chamber for the notification sound configured by.

In FIG. 5, the watch case 11 of this example is
The back side is a frame structure that is in an open state, and the back cover closes it. In FIG. 5, the analog circuit board 501, the digital circuit board 502, the liquid crystal display device 13, and the components for fixing them, which are housed inside the watch case 11, are all omitted. After the members are sequentially stored inside the timepiece case 11, the back side of the timepiece case 11 is closed.

In this embodiment, the back side of the watch case 11 is closed by the first back cover 15 and the second back cover 16 which is placed on the back side thereof. That is,
Five screw holes 110 are formed on the back side of the watch case 11, and five screw holes 110 are respectively formed on the first back cover 15 and the second back cover 16 in correspondence with the positions of the screw holes 110.
0 and 160 are formed, and the first back cover 15 and the second back cover 16 are attached to the watch case 11 with five screws 19.
It can be fixed to the back side of.

The first case back 15 is made of a stainless steel plate having a thickness of about 0.8 mm, and the hole 15 for inserting and removing the battery 59 at a position deviated in the 3 o'clock direction.
1 is formed in the hole 151, and the battery lid 118 is inserted in the hole 151.
Can be installed. On the surface side of the first case back 15 facing the inside of the watch case 11, a piezoelectric element 58 is bonded at a position deviated in the 9 o'clock direction with respect to the hole 151 as shown by a dotted line. Since the battery lid 118 and the hole 151 have the same structure as that used in a normal wristwatch,
The description is omitted.

In this example, two recesses 152 and 153 having a depth of about 0.4 mm are formed in the region corresponding to the position where the piezoelectric element 58 is arranged on the back surface side of the first back cover 15. . Therefore, in the first back cover 15, the concave portions 152,
The part where 153 m is formed is, as shown in FIG.
The thin portion 155 has a thickness of about 0.4 mm. However, in the first back cover 15, the back surface side is recessed to form the recess 152,
Since only 153 is formed, the first back cover 15
Of the surface side facing the inside of the watch case 11 of the
The portions where the 2, 153 are formed also remain flat.

Again in FIG. 5, the recesses 152, 153
Is a reinforcing rib 154 for ensuring the strength of this portion.
It is divided into two areas by. Recess 15
Both 2 and 153 are formed on the back surface side of the first case back 15 so as to reach the end edge 159 on the 9 o'clock direction side.

The second case back 16 is made of a thin stainless steel plate having a thickness of about 0.3 mm, and the first case back is made of the first stainless steel plate.
A large hole 161 is formed so that the battery 59 can be taken in and out from the hole 151 of the back cover 15. Therefore, on the back side of the watch case 11, even if the second back cover 16 is overlaid on the back side of the first back cover 15, the battery cover 1 is inserted through the hole 161.
18 can be attached and detached.

On the back side of the watch case 11, with the second back cover 16 superposed on the back side of the first back cover 15, the cross section at the position passing through the recesses 152 and 153 is schematically shown in FIG. As shown, it can be seen that the recesses 152 and 153 are covered with the second case back 16. Here, the recesses 152, 1
Since 53 is located on the opposite side of the piezoelectric element 58 with the thin portion 155 interposed therebetween, the recesses 152 and 153 covered by the second back cover 16 constitute the resonance chamber 100 of the sound emitted by the piezoelectric element 58. Is ready to go.

As can be seen from FIGS. 5 and 6,
Since the recesses 152 and 153 reach the end edge 159 in the 9 o'clock direction on the back surface side of the first case back 15, the recesses 152 and 153 form the end edge 159 of the first case back 15 and The first sound output hole 102 is opened to the outside between the edge 169 of the second back cover 16.

Further, as can be seen from FIGS. 5 and 6, since the second back cover 16 is formed with a hole 161 for inserting and removing the battery 59, the first back cover 15 is formed.
Even if the second back cover 16 is put on the recesses 152 and 153,
It cannot be completely closed. Therefore, even when the first back cover 15 is covered with the second back cover 16, the recesses 152 and 153 still have the holes 161.
The second sound output hole 103 is opened to the outside through the.

(Rotation preventive structure of the apparatus body) FIG.
It is the explanatory view which looked at the state where the arm wearing type pulse wave measuring device of this example was equipped to the arm from the direction of 3 o'clock.

In FIG. 7, among the side end portions of the watch case 11, in the 12 o'clock direction, a connecting portion 17 for holding the band connecting shaft 14 attached to the band base end side 121.
Are formed. On the other hand, in the outer peripheral portion of the watch case 11, in the direction of 6 o'clock, the wristband 12 wound around the arm is folded back at an intermediate position in the longitudinal direction, and a band for holding the intermediate position of the wristband 12 is held. The receiving portion 18 to which the fastener 60 is attached is formed.

In the 6 o'clock direction of the device main body 10, the portion from the edge of the flat back surface portion 119 (the back surface portion of the second case back 16) to the receiving portion 18 is formed integrally with the watch case 11 so that the back surface is formed. The rotation stopper 108 forms an angle of about 115 ° with the portion 119. Therefore, the wristband 12
The device body 10 by the upper surface L1 of the right wrist L (arm).
When mounted so as to be located on the (back side of the hand), the back surface part 119 of the watch case 11 is in close contact with the upper surface part L1 of the wrist L, while the rotation stopping part 108 is the side surface part L2 on the radius R side of the arm. Is in contact with. In this state, the device body 1
The back surface 119 of 0 is the radius R and the ulna U of the arm through the skin.
While it feels like straddling, the rotation stopper 108 and the back surface 11
From the bent portion 109 with 9 to the rotation stopping portion 108, it is like touching the radius R of the arm through the skin.

Thus, the rotation stopping portion 108 and the back surface portion 1
19 is an anatomically ideal angle of about 115 °, so that the device body 10 is rotated in the direction of arrow A, that is, the device body 10 is rotated around the wrist L from the front side to the other side. Even so, the rotation stopping portion 12 does not shift further while being in contact with the side surface portion L2 of the wrist L. Conversely, even if the device body 10 is rotated in the direction of the arrow B, that is, the device body 10 is rotated around the wrist L toward the front side, the device body 10
The back surface portion 119 of the back surface 119 does not move further while being in contact with the upper surface portion L1 of the wrist L. Further, 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 is impaired. Never. Further, the back surface portion 119 and the rotation stopping portion 108 only restrict the rotation at two places on one side around the arm. Therefore, even if the arm is thin, the back surface portion 119 and the rotation stopping portion 108 are surely brought into contact with the arm, so that the rotation stopping effect can be surely obtained, and even if the arm is thick, there is no cramped feeling.

It should be noted that it can be confirmed that the apparatus body 10 can be prevented from rotating around the arm by setting the angle formed by the back surface portion 119 and the rotation stopping portion 108 in the range of about 105 ° to about 125 °. There is. Further, the arm-mounted pulse wave detection device 1 may be mounted so that the device body 10 is located on the lower surface L3 (palm side) of the wrist L. In this case, the rotation stopper of the device body 10 is attached. The arm 108 is in contact with the side surface portion L4 of the arm on the ulnar U side. Even in this state, the device body 1
0 does not rotate unnecessarily when a force is applied in either direction of arrow A or arrow B.

(Band-fastening structure) FIG. 8A is a plan view of a wrist band used in the wrist-worn pulse wave measuring apparatus of this example.
FIG. 8B is an end view of the band connecting shaft attached to the base end thereof, and FIG. 8C is a sectional view of the receiving portion of the band connecting shaft. 9 (a) is a plan view of the band fastener, FIG.
(B) is a side view thereof.

In FIG. 7, in the wrist-worn pulse wave measuring device 1 of this example, the device body 10 is a single band-shaped wrist band 1.
2 is designed to be worn on the arm. As shown in FIG. 8A, the wristband 12 is attached to the band base end side 121 in a state where the band connecting shaft 14 is detachable.

As shown in FIG. 8B, the band connecting shaft 1
4 is composed of a flat shaft, and its both shaft ends 141
As shown in FIGS. 7 and 8C.
It is inserted into a holding hole 171 formed in the receiving portion 17 of the.

As shown in FIG. 8C, in the receiving portion 17 of the apparatus body 10, a guide groove 172 for moving in and out of the band connecting shaft 14 extending from the holding hole 171 to the rear surface 119 of the apparatus body 10 is formed. Has been formed. This guide groove 17
The opening width of 2 is narrower than the width dimension W of the band connecting shaft 14,
It is wider than its thickness dimension Y. Also, the guide groove 1
In the connecting portion between 72 and the holding hole 171, the opening width in this connecting portion is wider than the thickness dimension Y of the band connecting shaft 14 from one side wall toward the inside of the holding hole 171,
By narrowing the width dimension W of the band connecting shaft 14,
A protruding portion 17 for preventing both shaft ends 141 of the band connecting shaft 14 in the holding hole 171 from coming out through the guide groove 172.
3 is formed. That is, FIG. 8 (c)
As indicated by the one-dot chain line S, if both shaft ends 141 of the band connecting shaft 14 are slid sideways in the direction of the arrow Z1, both shaft ends 141 pass through the guide groove 172 and the holding hole 17 is formed.
Enter 1. Here, in the holding hole 171, since the width H between the apex of the projecting portion 173 and the portion facing it is narrower than the width dimension W of the band connecting shaft 14, after inserting both shaft ends 141 into the holding hole 171, , Band connecting shaft 14 in the direction of arrow Z2
When is rotated, both shaft ends 141 are caught by the projecting portion 173, the rotation is stopped, and the postures shown by the alternate long and short dash line T are obtained. Therefore, the both shaft ends 141 do not inadvertently come out of the holding hole 171 while being caught by the protruding portion 173.

In this way, the wristband 12 fixed to the device body 10 in the 12 o'clock direction is held in the state in which the wristband of the device body 10 is folded back in the 6 o'clock direction, as shown in FIG. To be done.

That is, as shown in FIG.
At 6 o'clock in a 0 wristwatch, the wristband 12
Is folded back in the middle, and a band fastener 60 for holding the folded back portion is attached to the receiving portion 18. In the receiving portion 18, a pair of holes 181 are formed at the side end portions of the device main body 10, and both shaft ends of a fastener fixing shaft 182 for fixing the band fastener 60 are inserted into these holes 181. ing.

The band fastener 60 is shown in FIGS. 9 (a) and 9 (b).
As shown in FIG. 5, a buckle frame 61 (shown by a chain double-dashed line) including a band passage 611 for passing the wrist band 12 from the lower side to the upper side, and a fastener fixing on the upper surface side of the buckle frame 61. The buckle pressing plate 62 is rotatable about the shaft 182. The buckle frame 61 is composed of a substantially U-shaped bent metal plate, and the inside thereof is a band passage 611. In the buckle frame 61, two projections 617 for preventing the wrist band 12 from slipping are formed on the inner surface 616 of the band passage 611. The buckle frame 61 is attached to the apparatus body 10 in a rotatable state around the fastener fixing shaft 182 by allowing the fastener fixing shaft 182 to pass through the hole 612 formed in the base portion of the buckle frame 61. .

The buckle pressing plate 62 is formed with a slit 624 through which the wristband 12 is passed. Further, the base portion of the buckle pressing plate 62 is processed so as to form a ring 621, and the fastener fixing shaft 18 is provided therein.
2 is attached to the apparatus main body 10 in a rotatable state around the fastener fixing shaft 182. On the lower surface of the buckle pressing plate 62, a band pressing portion 625 is formed by a Z-shaped bent corner portion.

In the buckle pressing plate 62, the wrist band 12 cannot be passed through the band passage 611 because the band pressing portion 625 is deeply inserted into the band passage 611 while being overlapped with the upper surface of the buckle frame 61. .

Here, the buckle pressing plate 62 can rotate about the fastener fixing shaft 182 in the directions of arrows J and K. On the other hand, the buckle frame 61
Since its base portion serves as a stopper portion 619 and abuts against the end portion of the timepiece case 11, its rotation in the direction of arrow K is restricted. Therefore, when only the buckle pressing plate 62 is rotated in the direction of the arrow K to separate the buckle pressing plate 62 from the buckle frame 61, as shown in FIG. 10, the band pressing portion 625 causes the band passage 6 of the buckle frame 51 to move.
11, the band tip side 121 is connected to the band passage 611 and the slit 6 as shown by the dotted line in FIG.
You can pass it through 25 easily.

From this state, when the front end side 121 of the band is released from the hand, the wrist band 12 has the base end side 121 of the band.
The power to be pulled back toward Therefore, the buckle pressing plate 52 rotates in the direction of arrow J due to the frictional force between the band pressing portion 625 and the wrist band 12. As a result, the band pressing portion 625 is provided with the band passage 6
3 and the wristband 12 is pressed inside the band passage 611. In this state, wristband 1
2 is strongly sandwiched between the lower edge portion 618 of the band passage 611 and the band pressing portion 625, and the frictional force acting between the wrist band 12 and the buckle frame 61 is large. Therefore, the wristband 12 does not loosen any further. Further, since the protrusion 617 for preventing slippage is formed on the inner surface of the band passage 611 at a position facing the band pressing portion 625, the wrist band 12 is securely held and does not loosen.

The front end 121 of the band folded back so as to overlap the wrist band itself is held by the band holder 16. This band holder 16 is shown in FIG.
As shown in (b), one thin metal plate is half-folded once, and the wristband 12 is inserted into the gap 163 between the base 161 and the intermediate portion 162, so that the wristband 12 has a predetermined shape. Fixed in position. Where the gap 1
Since the protrusion 164 for preventing slippage is formed toward 63, the band holder 16 does not inadvertently shift on the wristband 12. The tip portion 165 of the band holder 16 is
It is deeply bent to function as a leaf spring,
It is possible to hold the band tip side 121 by sandwiching it with the gap 169 between the bent portions. In addition, the tip portion 165
The slits 167 are formed in the ridges from the viewpoint of strength and aesthetics.

As can be seen from FIG. 10, when the arm-mounted pulse wave measuring device 1 is detached from the arm, the band tip side 1
When the buckle pressing plate 62 is lifted after removing 21 from the band holder 16, the buckle pressing plate 62 rotates in the direction of arrow K and the band pressing portion 625 comes out from the band passage 611. As a result, the band tip 121
Can freely pass through the slit 624 and the band passage 611, so that the arm-mounted pulse wave measuring apparatus 1 can be removed from the arm.

As described above, in this example, since the free-adjuster type band fastener 60 is used, the apparatus body 10 can be completely fixed to the arm. Further, it is convenient because only one wristband 12 needs to be handled. Moreover, since the wristband 12 is rotated from the 12 o'clock direction of the device body 10 to the 6 o'clock direction, the wristband 12 is operated at a position close to the device body 10. Therefore, the wristband 12 can be tightened while supporting the device main body 10 placed on the left arm with the right hand as it is, and the device main body 10 can be securely attached to the arm without trouble.

(Structure of Sensor Unit) FIG. 12 (a)
FIG. 12 is a plan view of an optical unit of a sensor unit used in the wrist-worn pulse wave measuring device of this example. FIG. 12B shows a sensor fixing band of the sensor unit used in this wrist-worn pulse wave measuring device. FIG. 12C is a plan view showing the unfolded state.
13 is an explanatory view showing the structure of another sensor unit, FIG.
[FIG. 3] is an explanatory view showing a state in which a 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. 12A, the optical unit 30
0 is a prism-shaped resin exterior having a pair of protrusions 311 and 312 on both sides.
The cable 20 is pulled out from the inside of 00.

In FIG. 12B, the hole 41 of the sensor fixing band 40 has such a shape and size that the optical unit 300 can be fitted thereinto, and when the optical unit 300 is fitted thereinto, a projection is formed. Parts 311, 31
Recesses 411 and 412 into which 2 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 the hand can be lightly gripped even if it is attached to the base of a finger, there is no problem even if the width of the sensor fixing band 40 is about 20 mm. Alternatively, as shown in FIG. 12C, 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. 13, in the optical unit 300, a back cover 302 is attached to a sensor frame 301 as a case body thereof.
Is covered and the interior is 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 the LED 31, the phototransistor 32, and a transistor (not shown) are mounted on the circuit board 305. The LED 31 and the phototransistor 32 have a light emitting surface and a light receiving surface facing the glass plate 304, respectively.

In this example, as the LED 31, InGaN is used.
System (indium-gallium-nitrogen system) blue LED is used, and its emission spectrum has an emission peak at 450 nm, and its emission wavelength range is from 350 nm to 60 nm.
It is in the range up to 0 nm. LE having such emission characteristics
Corresponding to D31, in this example, the phototransistor 3
2, a GaAsP-based (gallium-arsenic-phosphorus-based) phototransistor is used, and the light receiving wavelength region of the device itself has a main sensitivity region of 300 nm to 600 nm.
Up to 300 nm and there is a sensitivity region below 300 nm. Here, as the phototransistor 32, a sensor unit in which a filter is added to an element may be used,
The light receiving wavelength region of such a sensor unit has, for example, a main sensitivity region in the range of 400 nm to 550 nm.

A part of the light emitted from the pulse wave measuring LED 31 reaches the blood vessel through the finger as shown by the arrow C, and the reflected light from the hemoglobin in the blood is indicated by the arrow D.
As shown by, the pulse wave measurement phototransistor 32 is reached. The amount of light received through this path is the biological reflection amount. Further, a part of the light emitted from the pulse wave measuring LED 31 is reflected on the finger surface as shown by an arrow E and reaches the pulse wave measuring phototransistor 32. The amount of light received through this path is the amount of skin reflection. Further, the light emitted from the pulse wave measurement LED 31,
A part of 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 pulse wave measurement phototransistor 32.

In the optical unit 300 thus constructed, when light is emitted from the LED 31 toward the finger,
When the phototransistor 32 receives the light reflected from the living body (blood vessel) and the optical unit 300 inputs the light reception result (pulse wave signal) to the device body 10 via the cable 20, the device body 10 receives the pulse wave. The pulse rate obtained from the signal is displayed.

(Structure of Data Processing Unit) That is, FIG.
As shown in the block diagram of a part of the function of the data processing unit configured inside the watch case, the data processing unit 50
In the pulse wave signal converter 51, the sensor unit 30
A signal input from the cable via the cable 20 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 a 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. The pulse rate calculation unit 55 determines the frequency of the input pulse wave. The pulse rate is calculated based on the components, and the result is output to the liquid crystal display device 13.

(Structure of Connector Portion) FIG. 15 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. 16 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.

In FIG. 15, a connector portion 70 is formed on the surface side of the end portion of the apparatus main body 10 which extends as the rotation stopping portion 108 in the 6 o'clock direction, and there is The connector piece 80 (connector member) formed at the end of the cable 20 can be attached. Therefore, the sensor unit 30 and the cable 2
If 0 is removed from the device body 10, it can be used as an ordinary wristwatch, which is convenient.

Further, the connector portion 70 is fixed to the rotation stopping portion 108.
Since it is formed on the surface portion of the portion corresponding to, the extended portion for providing the rotation stopping portion 108 can be used as it is as the connector portion 70. Moreover, the connector portion 70
Is located in the 6 o'clock direction, so that when the apparatus main body 10 is worn on the arm, the connector portion 70 is on the front side when viewed from the user, and the operation is easy. In addition, the connector portion 70
Does not project from the device body 10 in the 3 o'clock direction,
The user can freely move his / her wrist during running, and even if the user falls down during running, the back of the hand does not hit the connector portion 70.

The electrical connections made at this connector 70 and connector piece 80 (connector means) are as shown in FIG.

In FIG. 16, 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).
Among them, the terminal 752 is the LED through the electrode portion 832.
31 is a positive terminal for supplying the second drive voltage VDD to the terminal 31, a terminal 753 is a terminal to be a negative potential of the LED 31 via the electrode portion 833, and a 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.

In the connector piece 80, the first capacitor C1 and the first switch SW1 are inserted between the terminals of the LED 31 (between the electrode portions 832 and 833). The switch SW1 is closed when the connector piece 80 is removed from the connector portion 70,
The first capacitor C1 is connected in parallel to D31,
The connector piece 80 is opened when the connector piece 80 is mounted on the connector portion 70. Similarly, the second capacitor C2 and the second switch SW2 are interposed between the terminals (electrode portions 831 and 834) of the phototransistor 32. The switch SW2 is in a closed state when the connector piece 80 is removed from the connector section 70, and the second capacitor C2 is connected in parallel to the phototransistor 32, and when the connector piece 80 is attached to the connector section 70. The open state.

Further, the structures of the connector portion 70 and the connector piece 80 will be described in detail with reference to FIGS.

FIG. 17 is an enlarged view showing the structure of the connector piece formed at the end of the cable, FIG. 18 is an enlarged view of the connector section on the apparatus body side, and FIG. 19 is a view showing the connector piece with respect to the connector section. FIG. 20 is a vertical cross-sectional view showing the combined state, and FIG. 20 is an explanatory view showing the arrangement of the electrode portions on the connector piece side and the circuit pattern.

In FIG. 17, a pair of protrusions 81 and 82 are formed on the lower surface portion 801 of the connector piece 80 so as to project downward on both sides thereof. 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 a circuit for preventing the influence of static electricity when the cable 20 is connected to the apparatus body 10 are formed. . These operating pins 837 and 838 are in a state in which the tips project from the lower surface portion 801 of the connector piece 80 when the connector piece 80 is removed from the connector portion 70.

On the other hand, as shown in FIG.
0, the engaging portions 71, 72, 73, 74 protruding outward.
(First engaging projection group) is formed. Therefore, the protruding portions 81 and 82 of the connector piece 80 are
Of the engaging portions 71, 72, 73, 74 are located outside, and between the engaging portions 71 and 72, and the engaging portion 73.
And the engaging portion 74, the engaging piece 8 of the connector piece 80.
After the connector piece 80 is covered with the connector part 70 so that the position of 11, 821, the engaging pieces 811, 821 are between the engaging part 71 and the engaging part 72, and between the engaging part 73 and the engaging part 73. The connector piece 80 is pressed toward the connector portion 70 so as to pass through the connector portion 70 (first operation for attaching the connector piece 80 to the connector portion 70), and then in the direction of the arrow Q (connector piece 70). 80
When the connector piece 80 is slid in the mounting direction of the device main body 10 from the 6 o'clock direction to the 12 o'clock direction (second operation for mounting the connector piece 80 on the connector part 70), the engaging part 71, 73 under the engaging pieces 811, 821
Goes under. Further, the engaging piece 81 is provided below the engaging portions 72 and 74.
2,822 sneak in. As a result, the engagement pieces 811, 82
1, 812 and 822 are lower surface portions 8 of the connector piece 80.
01, the engaging portions 71, 72, 73, 74 are held, respectively, and the connector piece 80 is easily and surely attached to the connector portion 70.

Here, like the electrode portions 831 to 836, the terminals 751 to 756 are arranged along the sliding direction of the connector piece 80 (direction of arrow Q), and the terminals 751 to 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. Further, even if the area where the connector portion 70 is formed is narrowed, the terminals and the electrode portions can be arranged at positions distant from each other. Therefore, even if water enters between the connector piece 80 and the connector portion 70, the terminals and It is difficult to short circuit between electrodes. In addition, terminals 752, 754, 7 to which drive voltage is applied
Since 56 and the electrode portions 832, 834, and 836 are arranged particularly apart from each other, tracking does not occur between terminals having different potentials and between electrode portions.

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, the connector piece 80 is engaged when it is slid on the connector portion 70 in the direction of arrow Q, and from this state, the connector piece 80 is slid in the opposite direction (direction of arrow R). An engagement mechanism 700 is configured to be released from the engaged state when the engagement mechanism 700 is operated.

Further, the connector piece 80 is attached to the connector portion 7
The force applied to the main body 10 of the device when it is slid from 0 o'clock direction to 02:00 o
8, the device body 10 is oriented so that it is more difficult to rotate. Therefore, even when the connector piece 80 is mounted, the apparatus body 10 does not rotate around the wrist, and thus the mounting is easy.

(Structure of Stopper Mechanism) As can be seen from FIG. 18, the engaging portions 71 to 74 are provided with vertical walls 711, 721, 731 and 741 on the side in the direction of arrow Q. Therefore, when the connector piece 80 is slid in the direction of the arrow R when the connector piece 80 is attached to the connector portion 70 (second operation), the engaging pieces 811, 81
2, 821, 822 are vertical walls 711, 721, 73
1, 741, respectively, and the connector piece 80 is stopped at the mounting position of the connector portion 70. That is, the vertical walls 711, 721, 731, 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 stops the connector unit 70 at the original position. That is, the back side of the vertical walls 721 and 741 is the connector piece 8
It functions as a second stopper for 0.

(Structure of Terminal and Electrode) Connector 7
0, the terminals 751 to 756 are all holes 761, 762, 763, 76 formed in the connector section 70.
4, 765, 766, of which the terminals 753, 756, the operating pin 838, and the electrode portions 833, 836 are cut at a position passing through the formation position thereof. .

In FIG. 19, 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 concave portion 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.

When mounting the connector piece 80 on the connector portion 70, the connector piece 80 is attached to the connector portion 7.
In order to slide on 0, the terminals 753, 756 pass over the annular protruding portions 843, 846 of the connector piece 80 while being biased by the coil springs 773, 776, and are securely connected to the electrode portions 833, 836. To do. Further, since the click mechanism is configured by using the ridges 843 and 846, the terminals 753 and 756, and the coil springs 773 and 776 as they are, the connector piece 80 can be reliably attached to the connector unit 70. 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) Connector Piece 8
A hole 868 is formed in the cover member 806 of No. 0, and an operation pin 838 is arranged in the hole 838. 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 does not come out of the hole 868. The base of the switch spring 88 is the electrode portion 83.
3 is fastened to the upper end surface of No. 3 by a screw 881,
It is electrically connected to 3.

In FIG. 20, the tip end portion 885 of the switch spring 88 is in contact with the base portion of the operating pin 838.
86, and a contact 887 formed in a portion protruding laterally therefrom. The contact 887 is electrically connected to the circuit pattern 852 of the circuit board 85.
Although not shown, the circuit pattern 852 is interposed between the first capacitor C1 and the electrode portion 833.

Therefore, in a state where the connector piece 80 is not attached to the connector portion 70, as shown by a solid line in FIG. 19, the operating pin 838 is pushed by the switch spring 88 and its tip projects from the hole 868. In this state, The contact 887 of the switch spring 88 is connected to the circuit pattern 85 of the circuit board 85.
2 is electrically connected. That is, in FIG. 16, the first switch SW1 is closed and the first capacitor C1 is interlocked with the movement of the operation pin 838 indicated by the arrow.
Is in a state of being electrically connected in parallel to the LED 31. Therefore, even if something having a high potential due to static electricity touches the electrode portions 832 and 833, the electric charge is accumulated in the first capacitor C1 and 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 to move the switch spring 88, as shown by the chain double-dashed line in FIG. It is deformed as shown 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. 16, 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. 16, it is also configured for the phototransistor 32, but its configuration uses the operating pin 837 and the 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. 21 shows a case where the cable 20 and the sensor unit 30 are removed from the arm-mounted pulse wave measuring apparatus 1 and the arm-mounted pulse wave measuring apparatus 1 is used as a normal wristwatch. Instead of 80
FIG. 6 is an explanatory diagram showing a configuration of a connector cover 90 mounted on the connector unit 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. The lower surface 901 of the connector cover 90 has terminals 7 of the connector 70.
Corresponding to the positions where 51 to 756 are arranged, the terminals 7
51 to 756 and the ridge portion 941 forming the click mechanism
946 is formed.

When the connector cover 90 is attached to the connector portion 70, like the connector piece 80, the engaging portion 71
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 will be in a state of being attached to 0.

(Overall operation of wrist-worn pulse wave measuring device)
The operation of the wrist-worn pulse wave measuring device 1 thus configured will be briefly described.

First, in FIG. 1, when the wrist-worn pulse wave measuring device 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. 21 is attached to the connector part 70 to enhance its appearance and protect the connector part 70.

On the other hand, when the pulse rate during running is measured using the wrist-worn pulse wave measuring device 1, as shown in FIG. 1, the connector piece 80 is attached to the connector portion 70 and the cable 20 is attached. After connecting to the device body 10, the device body 10 is worn on the wrist with the wristband 12. In addition, the sensor unit 30 (the glass plate 30 of the optical unit 300)
4) is run with the sensor fixing band 40 in close contact with the finger.

In this state, as shown in FIG.
When light is emitted from 31 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, FIG.
In the data processing unit 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.

Here, the sensor unit 30 includes a pulse wave measurement LED 31 having an emission wavelength range of 350 nm to 600 nm, and a pulse wave measurement phototransistor 32 having a reception wavelength range of 300 nm to 600 nm. Is used, and its overlapping area is about 300n.
The biological information is displayed based on the detection result in the wavelength range from m to about 600 nm. Of 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 thus even if the external light is applied to the finger portion not covered with the sensor fixing band 40, The dotted line X in FIG.
As shown in, the finger guides only light in a wavelength range that does not reach the pulse wave measurement phototransistor 32 (pulse wave measurement light receiving portion) and does not affect detection. It comes as a body. Further, since light in the wavelength region lower than 300 nm is almost absorbed by the skin surface, even if the light receiving wavelength region is 700 nm or less, the substantial light receiving wavelength region is 300 nm to 700 nm. Therefore, it is possible to suppress the influence of outside light only by covering the minimum necessary range without covering the finger with a large scale, and in the case of the small sensor unit 30 as in this example, the sensor unit 30 is attached to the base of the finger. You can hold your hand in the state, and there is no obstacle to running. Further, when the sensor unit 30 is attached to the base of the finger, the cable 20 can be short, so the cable 20
Do not get in the way while running. Furthermore, even when it is cold, blood flow does not decrease significantly at the base of the finger, as can be seen from the fact that the temperature at the base of the finger does not relatively decrease.
Even when running outdoors on a cold day, you can accurately measure your pulse rate.

On the other hand, when an LED having an emission peak near 880 nm and a silicon-based pulse wave measuring phototransistor are used, the light receiving wavelength range is 350 n.
It ranges from m to 1200 nm. Therefore, in the conventional optical system (detection device), the arrow Y in FIG.
As shown in, the pulse wave is detected based on the detection result of the light having a wavelength of 1 μm that easily reaches the pulse wave measurement light receiving portion by using the finger as a light guide. False detection is likely to occur.

Furthermore, since pulse wave information is obtained using 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. That is, in the relationship between the wavelength of light and the absorption characteristics of various hemoglobins, hemoglobin in blood has a wavelength of 300 nm.
To 700 nm, the absorption coefficient is large, which is several times to about 100 times or more larger than the absorption coefficient for light having a wavelength of 880 nm.

From the viewpoint of obtaining pulse wave information without being affected by external light, it is possible to adjust the pulse wave information from 540 nm to 57 nm.
A GaP-based pulse wave measurement LED 31 having a main emission region in the range of 0 nm and a GaP-based pulse wave measurement phototransistor 32 having a sensitivity region in the range of 200 nm to near 700 nm may be used.

(Main Effects of the Embodiment) As described above, while the wrist-worn pulse wave measuring device 1 of this embodiment is used as a pulse meter or when it is used as a stopwatch, the device main body 10 Emits a notification sound at a predetermined timing. This notification sound is shown in FIG. 5 and FIG.
The vibration from the piezoelectric element 58 reaches the resonance chamber 100 through the thin portion 155, is expanded there, and is emitted from the first sound output hole 102. Here, the wrist-worn pulse wave measuring device 1 of this example
Then, on the back side of the watch case 11, the first back cover 1
5, the recessed portions 152 and 153 are provided on the back surface side, and the recessed portions 152 and 153 are covered with the second back cover 16 that overlaps with the back surface side of the first back cover 15 to form the resonance chamber 100. is there. Therefore, in the region where the concave portions 152 and 153 are not formed, the first back cover 15 and the second back cover 16 are overlapped with each other, and thus the strength is equivalent to the sum of their thicknesses. That is, it has the same strength as a back cover made of a stainless steel plate of about 1.1 mm. On the other hand, the recess 15
In the area where 2, 153 are formed, the second back cover 16
Since there is a gap (resonance chamber 100) between the first back cover 15 and the first back cover 15, the first back cover 15 and the second back cover 16 have strengths corresponding to their respective thicknesses. However, such a portion is only a part of the first back cover 15 and the second back cover 16. Therefore, the first back cover 15 and the second back cover 16 have sufficient strength. Therefore, the first and second
Since it is not necessary to make the back covers 15 and 16 thick, the resonance chamber 100 can be configured with the apparatus body 10 remaining thin and lightweight. Further, unlike the case where the first back cover 15 and the second back cover 16 are overlapped with each other with a predetermined gap,
Since they are in a state of being completely adhered and superposed, the thickness dimension they occupy is about 1.
Only 1 mm. Therefore, the device body 10 can be made thin. Moreover, unlike the case where the recess is formed on the side of the second back cover 16, the recesses 152 and 153 are formed in the portion of the first back cover 15 where the piezoelectric element 15 is arranged. The thickness (thin portion 155) that separates the resonance chamber 100 from the resonance chamber 100 is as thin as about 0.4 mm. Therefore, the vibration from the piezoelectric element 58 efficiently reaches the resonance chamber 100, so that a large notification sound can be generated.

Since the recesses 152 and 153 are divided into a plurality of parts by the reinforcing ribs 154,
The structure in which the concave portions 152 and 153 of the first back cover 15 are formed can be reinforced, and the second back cover 16 is supported by the reinforcing ribs 154. Therefore, the first and second
The strength of the back cover 15 can be further increased. Therefore,
The first and second case backs 15 can be made thinner.

Further, since the recesses 152 and 153 are formed so as to reach the end edge 159 of the first back cover 15, the recesses 152 and 153 are connected to the end edge 159 of the first back cover 15 and the second end. The first sound output hole 102 is formed between the back cover 16 and the edge 169.
It is open as. Therefore, even if the device body 10 is attached to the arm, the first sound output hole 102 is not blocked by the arm. In addition, when the wrist-worn pulse wave measuring device 1 is used outdoors, even if water enters the resonance chamber 100 through the first sound output holes 102 and 103, the first sound output hole 102 is not connected to the device body 10. Since the second sound output hole 103 is opened on the side end and the other side is opened on the opposite side, water can be easily discharged from the first sound output hole 102 by tilting or shaking the device body 10. Go to.

[0110]

As described above, in the portable device and the wrist-worn pulse wave measuring device according to the present invention, on the back side of the case, the first case back is notified on the front side facing the inside of the case. While providing a sound producing element for generating sound, a recess is provided on the back surface side, and the recess is covered with a second back lid that overlaps the back surface side of the first back lid to form a resonance chamber. It is characterized by being present. Therefore, according to the present invention, in the region where the recess is not formed, the first back cover and the second back cover are overlapped with each other, and thus the strength is equivalent to the sum of those thicknesses. . Further, in the region where the concave portion is formed, since there is a gap (resonance chamber) between the second back lid and the first back lid, the first back lid and the second back lid are provided. Has only the strength of each thickness,
Such portions are only partially present on each case back.
Therefore, each of the first back cover and the second back cover has sufficient strength. Therefore, since it is not necessary to thicken the first and second case backs, the resonance chamber can be configured while keeping the apparatus main body thin and lightweight.

Since the first back cover and the second back cover are substantially completely overlapped with each other, the thickness they occupy is
It is only the sum of the thicknesses of the first and second case backs. Therefore, the resonance chamber can be configured while keeping the apparatus body thin.

Since the portion of the first back cover where the sounding element is arranged is recessed from the back surface side to be a thin portion,
Vibration from the sounding element efficiently reaches the resonance chamber. Therefore, a large notification sound can be generated.

When the concave portion is formed so as to reach the edge of the first case back, the concave portion and the edge of the first case back are combined with the edge of the first case back.
It will be opened as a sound output hole between the edge of the case back and. Therefore, the sound output hole is not blocked even when the device body is attached to the arm. Also, since there is a sound emission hole that opens at the side end of the device body, if holes are formed in other places, when water enters the resonance chamber, if the device body is tilted or shaken,
Water easily exits through the sound output holes on the side edges.

When the resonance chamber is divided into a plurality of portions by the reinforcing ribs, the strength of the first case back in the portion where the recess is formed can be increased and the reinforcing ribs form the second case back. It becomes a supporting structure. Therefore, the first and second case backs can be made thinner while maintaining high strength.

[Brief description of the 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 bottom view of the device body of the wrist-worn pulse wave measuring device shown in FIG.

FIG. 4 is an explanatory view of the device body of the wrist-worn pulse wave measuring device shown in FIG. 1 when viewed from the 6 o'clock direction of the wristwatch.

5 is an exploded perspective view for explaining the structure of the back surface part of the device main body in the wrist-worn pulse wave measuring device shown in FIG. 1. FIG.

6 is a cross-sectional view schematically showing a structure of a resonance chamber for an alarm sound composed of two case backs on the back surface of the apparatus body shown in FIG.

7 is an explanatory view of the device body of the wrist-worn pulse wave measuring device shown in FIG. 1 when viewed from the 3 o'clock direction of the wristwatch.

8A is a plan view of a wristband used in the wrist-worn pulse wave measuring device shown in FIG. 1, FIG. 8B is an end view of a band connecting shaft attached to a proximal end portion thereof, and FIG. 8] is a sectional view of a receiving portion of the band connecting shaft.

9 is a plan view of a fastener provided in the device main body in the 6 o'clock direction in the wrist-worn pulse wave measuring device shown in FIG.

10 is a diagram showing the wrist-worn pulse wave measuring device shown in FIG.
It is explanatory drawing which shows operation | movement at the time of tightening a wristband.

11A is a plan view of a band holder that holds the tip of the folded wrist band in the wrist-worn pulse wave measuring device shown in FIG. 1, and FIG. 11B is a side view thereof.

12 (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.
(B) is a plan view showing a state in which a sensor fixing band of the sensor unit used in the wrist-worn pulse wave measuring device is developed, and (c) is an explanatory view showing a structure of another sensor unit.

13 is a diagram showing an arm-mounted pulse wave measuring device shown in FIG.
It is explanatory drawing which shows the state which attached the sensor unit to the finger.

14 is a block diagram showing a function of a data processing unit of the wrist-worn pulse wave measuring device shown in FIG.

FIG. 15 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.

16 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.

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

FIG. 18 is an explanatory diagram showing the structure of a connector portion used in the connector means shown in FIG. 15.

19 is a cross-sectional view showing a state where the connector piece shown in FIG. 17 is attached to the connector portion shown in FIG.

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

FIG. 21 is a diagram 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.

FIG. 22 is an explanatory diagram showing a structure of a conventional resonance chamber for a notification sound.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Arm-worn pulse wave measuring device 10 ... Device main body 11 ... Watch case (main body case) 12 ... Wristband 13 ... Liquid crystal display device 15 ... First back cover 16・ ・ ・ Second back cover 31 ・ ・ ・ LED (light emitting part) 32 ・ ・ ・ Phototransistor (light receiving part) 58 ・ ・ ・ Piezoelectric element (sound producing element) 59 ・ ・ ・ Battery 70 ・ ・ ・ Connector part 80 ・..Connector member (connector piece) 100 ... Resonance chamber 102 ... First sound emission hole opened at side edge 103 ... Second sound emission hole opened at rear surface portion 152,153 ... Recesses formed on the back side of the first back cover 154 ... Reinforcing ribs that partition the recesses 155 ... Thin portion of the first back cover 159 ... 9 o'clock direction of the first back cover Edge 169 ... Edge of second case back in 9 o'clock direction

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G04G 1/00 315 9109-2F G04G 1/00 315H

Claims (5)

[Claims] 1. A portable device using a thin case capable of generating a notification sound from a device body, wherein the device body comprises a first back cover located on the back side of the case and the first back cover. A second back cover overlaid on the back side of the first back cover, a sounding element for generating an alarm sound arranged on the front side of the first back cover facing the inside of the case, and an alarm sound generated by the sounding element. A resonance chamber and a sound output hole that is open from the resonance chamber to the outside. The first back cover is recessed on the back surface side and corresponds to the arrangement position of the sounding element. A portable device, wherein a recessed portion having a predetermined area as a thin portion is formed, and the recessed portion is covered with the second back cover to form the resonance chamber. 2. The edge of the first back cover and the second back cover according to claim 1, wherein the recess is formed so as to reach an edge of the first back cover. A portable device, wherein the portable device is opened as the sound output hole between the end of the portable device and the end of the portable device. 3. The resonance chamber according to claim 1, wherein the resonance chamber is divided into a plurality of portions by a reinforcing rib formed in a region where the recess is formed, and the sound emission holes are directed to the outside from any of the resonance chambers. A portable device characterized by being opened. 4. The wristband according to claim 1, further comprising a wristband for mounting the device body on the arm with the second case back facing the arm surface. Mobile device. 5. An arm-mounted pulse wave measuring device comprising the portable device as defined in claim 4 and comprising a display unit for displaying pulse wave information such as pulse rate on the surface side of the device body. A sensor unit in which the light emitting unit and the light receiving unit are directed toward the finger surface, a cable extending from the sensor unit for inputting the light receiving result of the light receiving unit to the device body, and a cable built in the device body. A wrist-worn pulse wave measuring device, comprising: a data processing unit that obtains pulse wave information to be displayed on the display unit based on a light reception result of the light receiving unit.