TWI632884B - Biological information acquisition device - Google Patents

Abstract

The present invention relates to a biological information acquisition device, wherein the sitting portion (22) is configured such that a first layer (61) and a second layer (62) are sequentially stacked from the upper surface side to the inner side of the seat portion (22). And the third layer (63), the rigidity of the second layer (62) is higher than the rigidity of the third layer (63), and the rigidity of the first layer (61) is lower than the rigidity of the third layer (63). The pressure sensitive portion (31) has a pressure sensitive portion body (34) disposed between the first layer (61) and the second layer (62).

Description

Biological information acquisition device

The present invention relates to a biological information acquisition device.

So far, biometric information acquisition devices for acquiring biological information of the human body have been known.

For example, the biometric information acquisition device described in Patent Document 1 includes a plurality of pressure sensitive portions (air bags) disposed on the back of the chair of the automobile. When the body motion of the seated person is transmitted to the pressure sensitive portion, the biological information acquisition device acquires time-series signal data including the brain waves of the aorta near the waist portion, which fluctuates due to the pressure fluctuation of the pressure-sensitive portion. The time series signal data is signal processed to detect a sleep sign as a biological information.

Further, Patent Document 2 discloses a biometric information acquisition device in which a pressure sensitive portion (a fistula) is embedded in an inner intermediate portion of a urethane foam material constituting a mattress (see FIG. 3 of Patent Document 2). Once the body motion of the human body in a state of sleeping on the mattress is transmitted to the pressure sensitive portion, the pressure sensor detects a pressure change in the pressure sensitive portion. The biological information acquisition device detects biological information such as heartbeat and breathing based on the signal detected by the pressure sensor.

[Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2010-46236

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2003-235828

It is conceivable that the pressure sensitive portion described above is placed on a chair such as a sofa to obtain biological information of the human body (the seated person). However, if you simply set the pressure sensitive part on the sofa On the sitting part, the pressure-sensitive part causes an obstacle to the seated person, or the pressure-sensitive part directly contacts the buttocks of the seated person, thereby impairing the comfort.

On the other hand, as described in Patent Document 2, it is conceivable that the pressure sensitive portion is buried inside a soft member (such as a urethane foam material). However, if this is done, the polyurethane foam material and the pressure sensitive portion are greatly deformed together when seated, so that the change in the internal pressure of the pressure sensitive portion at the time of seating is reduced, and the detection accuracy of the biological information occurs. Reduced problems.

The present invention has been made in view of the above problems, and an object thereof is to provide a biological information acquisition device capable of maintaining the comfort of a seated person and having high detection accuracy of biological information.

The invention of the first aspect is directed to a biological information acquisition device including a chair (21), a pressure sensitive portion (31), and an information acquisition unit (30) having a seat back (23) and a seat portion (22) The pressure sensitive portion (31) is disposed in the seat portion (22), and the information acquisition portion (30) is generated by the body motion of the seated person (S) received by the pressure sensitive portion (31). Pressure to obtain the biological information of the seated person (S). In the first aspect of the invention, the seat portion (22) is configured such that a first layer (61) and a second layer (62) are sequentially stacked from the upper surface side to the inner side of the seat portion (22). And the third layer (63), the rigidity of the second layer (62) is higher than the rigidity of the third layer (63), and the rigidity of the first layer (61) is lower than the rigidity of the third layer (63), the above pressure The portion (31) has a pressure-sensitive portion body (34) disposed between the first layer (61) and the second layer (62).

In the invention of the first aspect, the pressure generated by the body motion of the seated person (S) sitting on the chair (21) acts on the pressure sensitive portion (31) disposed in the seat portion (22). The information acquisition unit (30) acquires biometric information of the seated person (S) based on the pressure generated by the body motion received by the pressure sensitive portion (31).

In the seat portion (22) of the chair (21), a first layer (61), a second layer (62), and a third layer (63) are sequentially laminated from the upper surface side toward the inner surface side. The pressure sensitive portion body (34) of the pressure sensitive portion (31) is disposed between the first layer (61) and the second layer (62). Accordingly, the pressure sensitive portion (31) is covered by the first layer (61) which is softer than the second layer (62) and the third layer (63). Thus, the seated person (S) sits on the soft first floor (61), and the pressure sensing portion (31) does not directly contact the seated person (S) buttocks and thighs. Contact.

The rigidity of the second layer (62) is higher than the rigidity of the first layer (61) and the third layer (63). That is, a second layer (62) having a high rigidity is provided on the back side of the pressure-sensitive portion main body (34). Thereby, it is possible to prevent the second layer (62) from being largely deformed by the pressure generated by the body motion of the seated person (S), and it is possible to reliably withstand the seating by the pressure sensitive portion body (34). The pressure generated by the body movement of the person (S). According to this, the detection accuracy of the pressure sensitive portion (31) is improved.

Since the third layer (63) is softer than the second layer (62), the cushioning property of the chair (21) can be ensured. According to this, the comfort of the seated person (S) can be ensured.

The invention of the second aspect is such that in the invention of the first aspect, the pressure sensitive portion is constituted by a pressure sensitive tube (31'), and the internal pressure of the pressure sensitive tube (31') follows the above The body motion of the seat (S) changes, and the pressure sensitive portion system is constituted by a pipe body (34') disposed between the first layer (61) and the second layer (62).

In the second aspect of the invention, the tube body (34') of the pressure sensitive tube (31') is disposed between the first layer (61) and the second layer (62) of the seat portion (22). Since the rigidity of the second layer (62) is higher than that of the first layer (61) and the third layer (63), it is possible to prevent the second layer (62) from sinking together with the tube body (34'). As a result, the change in the internal pressure of the pressure sensitive tube (31') which changes with the change in the body motion of the seated person (S) becomes remarkable, and the detection accuracy of the pressure sensitive tube (31') is improved.

The third aspect of the invention is such that in the second aspect of the invention, the seat portion (22) has a fourth layer (64) disposed in the third layer (63) Further, at the inner side of the seat portion (22), and the rigidity of the fourth layer (64) is higher than the rigidity of the third layer (63), a cutout portion (64a) is formed on the fourth layer (64). A part of the pressure sensitive tube (31') is held by the notch portion (64a).

In the seat portion (22) of the third aspect of the invention, the fourth layer (64) is provided at the inner side of the seat portion (22) than the third layer (63). A notch portion (64a) is formed in the fourth layer (64), and a part of the pressure sensitive tube (31') is held in the notch portion (64a) to be held. Since the rigidity of the fourth layer (64) is higher than the rigidity of the third layer (63), the pressure sensitive tube (31') can be firmly held in the slit In the department (64a).

The invention of the fourth aspect is such that in any of the first to third aspects, the upper surface of the seat portion (22) is lowered toward the height of the seat back (23). The way is inclined to the back side.

The seat portion (22) of the fourth aspect of the invention is inclined such that the upper surface thereof is lower in height toward the seat back (23). Therefore, the seated person (S) becomes a posture in which the buttocks are caught between the seat portion (22) and the seat back (23), and the posture of the seated person (S) can be prevented from being significantly changed. As a result, the body motion of the seated person (S) can be accurately detected.

According to a fifth aspect of the invention, in any one of the first to fourth aspects, the biometric information acquisition device includes a footrest portion (26), and the footrest portion (26) is disposed at The front side of the above-mentioned chair (21) has a footrest surface (28) formed at a position higher than the upper end of the front edge of the seat portion (22).

In the fifth aspect of the invention, the footrest portion (26) is disposed on the front side of the chair (21). The footrest surface (28) of the footrest (26) is located higher than the upper end of the front edge of the chair (21). Therefore, in a state where the seated person (S) sits on the chair (21) and rests the foot on the footrest portion (26), the seated person (S) becomes substantially turned down toward the back (23) side of the chair. posture. As a result, it is possible to prevent the posture of the seated person (S) from being significantly changed, and it is possible to accurately detect the body motion of the seated person (S).

The sixth aspect of the invention is such that in any one of the first to fifth aspects, the pressure sensitive portion body (34) is disposed in the middle of the seat portion (22) in the front-rear direction. The back is at the side.

In the sixth aspect of the invention, the pressure sensitive portion main body (34) is disposed rearward of the intermediate portion of the seat portion (22) in the front-rear direction. According to this, the buttocks and the thigh of the seated person (S) are likely to be located at a position corresponding to the pressure sensitive portion main body (34), and the body motion of the seated person (S) can be accurately detected.

According to the present invention, it is possible to improve the detection accuracy of detecting the body motion by the pressure sensitive portion (31) while ensuring the comfort of the seated person (S). Further, according to the invention of the second aspect described above, The body pressure of the seated person (S) can be detected using the pressure sensitive tube (31').

Further, according to the third aspect of the invention, the pressure sensitive tube (31') can be firmly held in the cutout portion (64a) of the fourth layer (64), so that the position of the pressure sensitive portion body (34) can be avoided. The offset can further improve the detection accuracy of detecting the body motion by the pressure sensitive portion (31).

According to the fourth and fifth aspects of the invention, since the posture of the seated person (S) can be significantly changed, the detection accuracy of detecting the body motion by the pressure sensitive portion (31) can be improved. According to the sixth aspect of the invention, the pressure sensitive portion main body (34) is disposed at the rear of the seat portion (22), so that the pressure generated by the body motion of the seated person (S) can be applied to the pressure sensing portion. (31), so that the detection accuracy of body motion can be improved.

10‧‧‧Biological information acquisition device

21‧‧‧Sofa (chair)

22‧‧‧ seat

23‧‧‧ chair back

26‧‧‧footrest

28‧‧‧foot rest

30‧‧‧Information Acquisition Unit (Information Acquisition Department)

31‧‧‧The Ministry of Pressure

31'‧‧‧ Pressure tube

34‧‧‧The body of the pressure sensitive part

34'‧‧‧ tube body

61‧‧‧Resin cotton (first layer)

62‧‧‧PVC leather (second layer)

63‧‧‧Polyurethane (third layer)

64‧‧‧Recycled polyurethane (fourth floor)

64a‧‧‧Undercutting section (cutting section)

S‧‧‧ seated

Fig. 1 is a schematic perspective view showing an overall configuration of a biological information acquisition device according to an embodiment.

Figure 2 is a side view of the biological information acquisition device.

Fig. 3 is a longitudinal sectional view showing the internal structure of the sofa.

4 is a block diagram of a biological information acquisition device.

Figure 5 is a cross-sectional view taken along line V-V of Figure 3 .

Fig. 6 is a view as seen in the direction of arrow VI in Fig. 5.

Fig. 7 is a cross-sectional view taken along line VII-VII of Fig. 5, and Fig. 7 shows a state in which it is not seated on a chair.

Fig. 8 is a cross-sectional view taken along line VII-VII of Fig. 5, and Fig. 8 shows a state of sitting on a chair.

Fig. 9 is a longitudinal cross-sectional view showing the internal structure of a massage chair of another embodiment.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. It should be noted that the following embodiments are merely preferred examples in nature, and are not intended to limit the scope of the invention, its application, or its use.

<the whole frame>

Embodiments of the present invention constitute a biological information acquisition device (10) for acquiring biological information of a human body. The biological information acquisition device (10) detects the pressure of the seated person (S) or the degree of autonomic nerve activity as biological information.

As shown in FIGS. 1 and 2, the biological information acquisition device (10) includes a sofa set (20), an information acquisition unit (30), a signal output unit (45), and a tablet terminal (50) (operation unit).

[Sofa group]

The sofa set (20) includes a single-person sofa (21) (chair) and an ottoman (26) (footrest) disposed on the front side of the sofa (21). The body surface of the sofa (21) and the footrest (26) is covered by synthetic leather (20a), such as leather made of polyurethane. It should be noted that other materials such as natural leather and woven fabric may be used as the material covering the surface of the body.

The sofa (21) includes a seat portion (22), a seat back (23) formed on the rear side of the seat portion (22), and four leg portions (24) that support the sofa (21).

The seat portion (22) is inclined such that the upper side of the upper surface (the side of the seat back (23)) is closer to the lower side. The buttocks and thighs of the seated person (S) are correspondingly located on the seat (22). The back and head of the seated person (S) are correspondingly located on the back (23) of the chair. The back (23) of the chair is inclined such that the upper side thereof is closer to the upper side than the rear side. That is, the seat (22) and the seat back (23) of the sofa (21) are substantially V-shaped. A cushion (25) is attached to the upper portion of the seat back (23) at a position corresponding to the head of the seated person (S).

The footrest (26) is formed in a rectangular parallelepiped shape having an upper surface, and the footrest (26) is supported by the four leg portions (27). A footrest surface (28) for resting the foot of the seated person (S) is formed on the upper surface of the footrest (26). As shown in Fig. 2, the height h1 of the footrest surface (28) of the footrest (26) is higher than the leading edge end h2 of the seat portion (22).

[Biometric Acquisition Unit]

As shown in FIG. 3, the information acquisition unit (30) is provided with a pressure-sensitive tube (31') and a sensor body (35).

The pressure sensitive tube (31') constitutes a pressure sensitive portion that receives the pressure generated by the body motion of the seated person (S). The pressure sensitive tube (31') is composed of a tube made of a resin (for example, made of vinyl chloride) having an inner diameter of about 4 mm. One end of the pressure sensitive tube (31') is sealed by a sealing portion (32). The other end of the pressure sensitive tube (31') is connected to the sensor body (35) via a connection portion (33). The intermediate portion of the pressure sensitive tube (31') constitutes a pressure sensitive portion body (tube body (34')) disposed in the vicinity of the upper surface of the seat portion (22) of the sofa (21). The details of the structure of the tube body (34') and its surroundings will be described later.

It should be noted that the pressure sensitive tube (31') may be configured such that the pressure sensitive tube (31') is changed in such a manner that the internal pressure changes with the pressure generated by the body motion of the seated person (S). The interior is connected to the outside. In this case, for example, one end of the pressure sensitive tube (31') may be opened, or a throttle portion having an opening may be attached to one end of the pressure sensitive tube (31').

As shown in FIG. 3, the sensor body (35) is mounted inside the sofa (21). As shown in Fig. 4, a microphone (36) for detecting the internal pressure of the pressure sensitive tube (31') is provided in the sensor body (35). The microphone (36) receives a pressure signal by the internal pressure of the pressure sensitive tube (31').

As shown in FIG. 4, the sensor body (35) has a preprocessing section (37), a heartbeat interval detecting section (38), a pressure degree calculating section (39), and a storage section (40).

The preprocessing unit (37) performs predetermined filtering processing on the signal output from the microphone (36). The heartbeat interval detecting unit (38) derives an R wave having a large amplitude from the processed signal. Further, the heartbeat interval detecting unit (38) calculates the length of the heartbeat interval in each predetermined section.

In order to perform the frequency analysis of the calculated change in the heartbeat interval (fluctuation of the heartbeat interval), the pressure degree calculation unit (39) linearly interpolates the heartbeat interval data to convert the heartbeat interval data into equal time interval data. Then, the heartbeat interval data of the time intervals is subjected to Fast Fourier Transform (FFT) to obtain a low frequency component LF (for example, 0.04 to 0.15 Hz) and a high frequency component HF (for example, 0.15 Hz or more) of the fluctuation of the heartbeat interval. Ratio (LH/HF). This ratio becomes biological information related to stress or autonomic activity. For example, it can be determined that when the ratio (LH/HF) is equal to or greater than the first predetermined value (for example, "2"), the pressure is high; and the ratio (LH/HF) is the second predetermined value (for example, "5"). Above In the case of excessive stress.

The storage unit (40) temporarily stores the pressure signal detected by the microphone (36), the heartbeat interval detected by the heartbeat interval detecting unit (38), the pressure degree calculated by the pressure degree calculating unit, and the like. It should be noted that the storage unit (40) may store only the pressure signal, and other indicators may be calculated later.

[Signal output unit and operation unit]

As shown in FIGS. 3 and 4, the signal output portion (45) is connected to the sensor body (35) of the information acquisition unit (30) via a cable (for example, a USB cable (46)). The signal output unit (45) is configured to wirelessly output a signal (for example, a pressure signal, a heartbeat interval, a pressure degree, and the like) transmitted from the sensor body (35) to the tablet terminal (50). It should be noted that the signal output unit (45) may output a predetermined signal by means of a wired method instead of using a wireless method. The tablet terminal (50) has a display portion (51) for displaying the degree of pressure or the like calculated by the sensor body (35).

<The structure of the pipe body and its surroundings>

The structure of the pipe body (34') and its surroundings will be described in detail with reference to Figs. 3 and 5 to 8. As shown in Fig. 3, the tube body (34') is disposed near the upper surface of the seat portion (22) of the sofa (21). The tube body (34') extends straight along the width direction (left-right direction) of the seat portion (22). The tube body (34') is located slightly rearward of the intermediate portion of the seat portion (22) in the front-rear direction.

As shown in Fig. 5, the seat portion (22) is constructed by laminating a plurality of layers (components). Specifically, in the seat portion (22), synthetic leather (20a), resin cotton (61) (first layer), and PVC leather (62) (vinyl chloride leather) are sequentially laminated from the front side to the back side. The second layer), polyurethane (63) (third layer), and recycled urethane (64) (fourth layer).

If the thickness of the resin cotton (61) is d1, the thickness of the PVC leather (62) is d2, the thickness of the polyurethane (63) is d3, and the thickness of the recycled polyurethane (64) is d4, the seat portion (22) satisfies d2< The relationship of d1 < d3 < d4. It should be noted that in the relationship of the thicknesses of the layers, d1=d3 or d1>d3 may also be used.

Further, if the rigidity of the resin cotton (61) is S1, the rigidity of the PVC leather (62) is S2, the rigidity of the polyurethane (63) is S3, the rigidity of the recycled polyurethane (64) is S4, and the rigidity of the pressure sensitive tube is S5. Then, the seat portion (22) satisfies the relationship of S1 < S3 < S2 ≒ S5 < S4.

As shown in Figures 5 and 6, the tube body (34') is held between the PVC leather (62) and the resin cotton (61). The PVC leather (62) has a width and a length that can cover the tube body (34') from the lower side of the tube body (34') (refer to Fig. 6).

An upper cutout portion (63a) is formed at each of both end portions in the width direction of the polyurethane (63). The upper cutout portion (63a) extends from the left and right sides of the polyurethane (63) in the width direction of the seat portion (22) to both end portions of the PVC leather (62). A lower cutout portion (64a) is formed at each end portion of the regenerated polyurethane (64). The lower slit portion (64a) extends from the left and right sides of the regenerated polyurethane (64) in the width direction of the seat portion (22) to a portion corresponding to both end portions of the PVC leather (62). That is, the lower cutout portion (64a) is located at a position corresponding to the upper and lower cutout portions (63a). The upper cutout portion (63a) is formed in a portion of the region R1 marked with a dot in Fig. 5, and the lower cutout portion (64a) is formed in a portion of the marked region R2 in Fig. 5.

A part of the portion of the pressure sensitive tube (31') extending from the tube body (34') toward the sealing portion (32) is an upper cutout portion (63a) sandwiching one side in the width direction of the seat portion (22). It is held in the lower cutout portion (64a). A part of the portion of the pressure sensitive tube (31') extending from the tube body (34') toward the connecting portion (33) is an upper side cutout portion (63a) that is sandwiched on the other side in the width direction of the seat portion (22). ) is held in the lower cutout portion (64a). According to this, the pressure sensitive tube (31') is firmly fixed in the seat portion (22), and the positional deviation of the tube body (34') in the seat portion (22) can be prevented.

- The role of the seat, etc. -

In the present embodiment, the entire pipe body (34') is covered by the resin cotton (61). Compared with the pressure sensitive tube (31'), the resin cotton (61) has low rigidity and flexibility. Therefore, the buttocks and thighs of the seated person (S) sitting on the sitting portion (22) do not directly contact the pressure sensitive tube (31'), and the seated person (S) does not feel uncomfortable. Thereby, the comfort of the seated person (S) can be ensured.

The tube body (34') is disposed on the upper surface of the PVC leather (62). Due to PVC leather (62) The rigidity is higher than the rigidity of the polyurethane (63) located on the lower side thereof, so that the pressure generated by the body motion of the seated person (S) (the hollow arrow in Fig. 8) can be prevented as shown in Figs. 7 to 8 . When seated on the seat (22), the tube body (34') collapses substantially together with the polyurethane (63). That is, since the tube body (34') can be prevented from being displaced downward by the PVC leather (62), the internal pressure change of the tube body (34') becomes remarkable, and the detection accuracy of the pressure signal can be improved.

The pressure sensitive tube (31') is held by being sandwiched in the lower cut portion (64a, 64a) below the highly rigid recycled polyurethane (64). According to this, it is possible to prevent the positional displacement of the pressure sensitive tube (31'), and it is possible to prevent the positional displacement of the tube body (34') in the seat portion (22). As a result, it is possible to prevent the detection accuracy of the pressure signal from being lowered due to the positional deviation of the pipe main body (34').

The upper surface of the seat portion (22) is inclined obliquely downward toward the seat back (23). Therefore, the seated person (S) on the sofa (21) becomes a posture in which the buttocks are caught between the seat portion (22) and the seat back (23), and the posture of the seated person (S) can be prevented from changing. According to this, it is also possible to prevent the hip and the thigh of the seated person (S) from being deviated from the tube body (34'), thereby preventing the detection accuracy of the pressure signal from being lowered.

The height h1 of the footrest surface (28) of the footrest (26) of the sofa set (20) is higher than the height h2 of the upper end of the front edge of the sofa (21) (refer to Fig. 2). Therefore, in the state where the seated person (S) rests the foot on the footrest surface (28) of the footrest (26) (refer to FIG. 1), the seated person (S) becomes the buttocks into the sitting portion (22) and The posture between the back of the chair (23) can prevent the posture of the seated person (S) from changing. According to this, it is possible to more reliably prevent the hip and the thigh of the seated person (S) from deviating from the tube body (34'), thereby preventing the detection accuracy of the pressure signal from being lowered.

The pipe body (34') is disposed slightly at the rear side of the intermediate portion of the seat portion (22) in the front-rear direction. Accordingly, the hips and the thighs of the seated person (S) are located at positions corresponding to the tube body (34'), and the detection accuracy of the pressure signal can be further improved.

- Effect of the embodiment -

According to the above embodiment, since the tube main body (34') is sandwiched between the flexible resin cotton (61) and the PVC leather (62) having a certain degree of rigidity (bending rigidity), it is possible to secure the seating. (S) comfort, and improve the detection of body motion using the pressure tube (31') Measurement accuracy.

Further, as shown in FIG. 6, the pressure sensitive tube (31') can be firmly held in the cutout portion (64a) of the regenerated polyurethane (64), and the positional displacement of the pressure sensitive tube (31') can be avoided, thereby enabling Improve the detection accuracy of the body motion detection by the pressure sensitive tube (31').

According to the above embodiment, since the posture change of the seated person (S) can be prevented, the detection accuracy of detecting the body motion by the pressure sensitive tube (31') can be improved. Further, by arranging the tube body (34') at the rear side of the seat portion (22), the pressure generated by the body motion of the seated person (S) can be reliably applied to the pressure sensing tube (31'). Up, thereby improving the detection accuracy of body motion.

[Other Embodiments]

In the above embodiment, the pressure sensitive tube (31') is used as the pressure sensitive portion, and the tube body (34') of the pressure sensitive tube (31') is disposed in the first layer (61) and the second layer ( 62) Between. However, for example, another device such as a piezoelectric sheet that receives the pressure generated by the body motion of the seated person (S) may be used as the pressure sensing portion, and a part of the piezoelectric sheet may be disposed as the pressure sensing portion body at the first portion. Between the layer (61) and the second layer (62).

Other members in a sheet shape or a plate shape may be laminated between the first layer (61) and the pressure sensitive tube (31'). As the member, for example, a pressure receiving plate for expanding the pressure receiving area that receives the pressure generated by the seated person (S) can be cited.

Further, in the above embodiment, the chair (the sofa (21)) and the footrest (footrest (26)) are configured as separate members. However, the present invention can also be applied to a longitudinal type chair in which the footrest (26) and the chair (21) are integrated. Further, in the biological information acquisition device (10), the footrest (26) may be omitted.

Further, the materials of the first layer (61), the second layer (62), the third layer (63), and the fourth layer (64) in the seat portion (22) of the present embodiment are merely examples. That is, as long as the rigidity of each layer satisfies the above relationship, other materials may be used for each layer. Specifically, as other combinations other than the above embodiments, for example, the first layer (61) may be made of leather; the second layer (62) may be made of polyurethane; the third layer (63) may be made of recycled polyurethane; and the fourth layer (for the fourth layer (63)) 64) Use polyethylene, poly Any of propylene, vinyl chloride, PET (polyethylene terephthalate), and acrylic resin.

Further, in the present embodiment, the synthetic leather (20a) is laminated on the outer side of the first layer (61), but the synthetic leather (20a) may be omitted. That is, the first layer (61) may be formed on the outermost surface of the chair (21).

The seat portion (22) of the present invention is applied to the sofa (21), but the seat portion (22) of the present invention can be applied to any object as long as it can be seated. For example, the seat (22) can be applied to a seat of a transport machine (a car, an airplane, a train, etc.) (including a passenger seat, a driver's seat), and a massage chair.

Fig. 9 is an example of application of the present invention to a sitting portion (22) of a massage chair. In the seat portion (22), a first layer (61), a second layer (62), a third layer (63), and a fourth layer (64) are sequentially laminated on the lower side of the covering body (20a). The first layer (61) is composed of a thicker thickness of resin cotton, and the second layer (62) is composed of a thinner PVC leather. The third layer (63) is composed of a relatively thick polyurethane, and the fourth layer (64) is composed of a support having a relatively small thickness and a high rigidity.

A vibrating body (70) is provided between the first layer (61) and the third layer (63), and the vibrating body (70) has a vibrator. As soon as the vibrating body (70) generates vibration, the vibration is transmitted to the seated person (S) via the first layer (61). A tube body (34') of a pressure sensitive tube (31') is disposed between the first layer (61) and the second layer (62). In this example, since the tube body (34') is sandwiched between the first layer (61) having flexibility and the high-strength PVC leather (62), it is possible to ensure the comfort of the seated person (S). Moreover, the detection accuracy of detecting the body motion by the pressure sensitive tube (31') is improved.

[Industrial Availability]

As described above, the present invention is useful for a biological information acquisition device.

Claims (6)

A biological information acquisition device includes a chair (21), a pressure sensitive portion (31), and an information acquisition unit (30), wherein the chair (21) has a seat back (23) and a seat portion (22), and the pressure sensing portion ( 31) In the seat portion (22), the information acquisition unit (30) acquires the seat person based on the pressure generated by the body motion of the seated person (S) received by the pressure sensitive portion (31) (S) The biological information, wherein the seat portion (22) is configured such that a first layer (61), a second layer (62), and a first layer are sequentially stacked from the upper surface side to the inner side of the seat portion (22). The third layer (63), the rigidity of the second layer (62) is higher than the rigidity of the third layer (63), and the rigidity of the first layer (61) is lower than the rigidity of the third layer (63), and the above-mentioned pressure sensitive portion ( 31) A pressure sensitive portion body (34) disposed between the first layer (61) and the second layer (62). The biometric information acquisition device according to claim 1, wherein the pressure sensitive portion is constituted by a pressure sensitive tube (31'), and the internal pressure of the pressure sensitive tube (31') follows the seated person (S) The body motion changes, and the pressure sensitive portion system is constituted by a pipe body (34') disposed between the first layer (61) and the second layer (62). The biological information acquiring device according to claim 2, wherein the sitting portion (22) has a fourth layer (64), and the fourth layer (64) is disposed above the sitting portion than the third layer (63) The inner side of (22), and the rigidity of the fourth layer (64) is higher than the rigidity of the third layer (63), and the fourth layer (64) is formed with a cutout portion (64a) for the pressure sensitive tube A part of (31') is held in the notch portion (64a) to be held. The biological information acquisition device according to any one of claims 1 to 3, wherein the upper surface of the sitting portion (22) is inclined toward the rear side so as to be lower in height toward the seat back (23). The biological information acquisition device according to any one of claims 1 to 3, wherein the biological information acquisition device includes a footrest portion (26) disposed on a front side of the chair (21) And a footrest surface (28) is formed at a position higher than the upper end of the front edge of the seat portion (22). The biometric information acquisition device according to any one of claims 1 to 3, wherein the pressure sensitive portion main body (34) is disposed on a rear side of the intermediate portion of the sitting portion (22) in the front-rear direction.