JP2022148066A - Gas suction/discharge device and gas information acquisition device - Google Patents

Abstract

To provide a gas suction/discharge device which can inhibit leakage of a gas around a micro blower.SOLUTION: A gas suction/discharge device has: a micro blower which suctions or discharges a gas; a housing member which houses the micro blower; and a sealing member which is disposed contacting with the micro blower and the housing member.SELECTED DRAWING: Figure 22

Description

The present invention relates to a gas suction/discharge device and a gas information acquisition device.

A micro-blower using a piezoelectric element is known. A microblower is a type of pump that uses a vibrating diaphragm that bends and vibrates when a voltage is applied to a piezoelectric element, and is capable of sucking and discharging gases such as air.

As a micro-blower, for example, a diaphragm having a piezoelectric element, a case that fixes the periphery of the diaphragm and forms a blower chamber between the diaphragm and the wall of the case that faces the central part of the diaphragm. A structure has been proposed that includes a first opening that is provided and a plurality of connecting portions that are provided on the outer periphery of the case and substantially suppress vibration propagation from the case to the outside. This micro-blower applies a voltage of a predetermined frequency to the piezoelectric element to drive the vibration plate in a bending mode, thereby discharging the compressible fluid from the first opening (see, for example, Patent Document 1).

In a gas suction/discharge device using a micro-blower, it is necessary to prevent leakage of gas sucked from around the micro-blower in order to ensure the performance of the micro-blower.

JP 2013-50108 A

SUMMARY OF THE INVENTION It is an object of the present invention to provide a gas suction and discharge device capable of suppressing gas leakage around a microblower.

This gas suction/discharge device has a micro-blower that sucks and discharges gas, a housing member that houses the micro-blower, and a sealing member that is arranged in contact with the micro-blower and the housing member.

According to the disclosed technology, it is possible to provide a gas suction and discharge device capable of suppressing gas leakage around the microblower.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows typically the bed in which the gas information acquisition apparatus which concerns on 1st Embodiment is arrange|positioned. 4 is a plan view illustrating a cover according to the first embodiment; FIG. It is a top view which illustrates both surface sides of a cover concerning a 1st embodiment. It is a top view which illustrates cover structure concerning a 1st embodiment. FIG. 3 is a cross-sectional view illustrating the cover structure according to the first embodiment; It is a top side perspective view of an adapter. It is a bottom surface side perspective view of an adapter. FIG. 3 is a cross-sectional view (part 1) of the adapter; It is sectional drawing (2) of an adapter. FIG. 11 is a diagram (part 1) explaining a method of attaching the adapter to the cover; It is a figure (2) explaining the method of attaching an adapter to a cover. FIG. 13 is a diagram (part 3) explaining how to attach the adapter to the cover; FIG. 13 is a diagram (part 4) explaining how to attach the adapter to the cover; FIG. 11 is a diagram (No. 5) explaining how to attach the adapter to the cover; FIG. 11 is a cross-sectional view of a modification of the adapter; FIG. 11 is a plan view of a modification of the adapter; It is the upper surface side perspective view etc. of the modification of an adapter. FIG. 2 is an enlarged perspective view of the vicinity of the case of the gas information acquisition device according to the first embodiment; 2 is a partially enlarged cross-sectional view of the vicinity of the case of the gas information acquisition device according to the first embodiment; FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which illustrates the gas suction discharge apparatus which concerns on 1st Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which illustrates the gas suction discharge apparatus which concerns on 1st Embodiment. 1 is an exploded perspective view illustrating a gas suction/discharge device according to a first embodiment; FIG. FIG. 3 is a plan view illustrating the micro-blower of the gas suction/discharge device according to the first embodiment; FIG. 3 is a cross-sectional view illustrating a micro-blower of the gas suction/discharge device according to the first embodiment; FIG. 10 is a perspective view (part 1) schematically showing a bed on which a gas information acquisition device according to Modification 1 of the first embodiment is arranged; FIG. 11 is a perspective view (part 2) schematically showing a bed on which a gas information acquisition device according to Modification 1 of the first embodiment is arranged; FIG. 11 is a perspective view schematically showing a bed on which a gas information acquisition device according to Modification 2 of the first embodiment is arranged; It is a top side perspective view of the modification of an adapter. It is the perspective view (part 1) which turned upside down and illustrated the upper case which concerns on 2nd Embodiment. It is the perspective view (part 2) which turned upside down and illustrated the upper case which concerns on 2nd Embodiment. It is the perspective view (3) which turned upside down and illustrated the upper case which concerns on 2nd Embodiment. It is the top view which turned upside down and illustrated the upper case which concerns on 2nd Embodiment. It is a perspective view explaining the modification of the upper case which concerns on 2nd Embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings. In each drawing, the same components are denoted by the same reference numerals, and redundant description may be omitted.

<First embodiment>
[Gas information acquisition device 3]
FIG. 1 is a perspective view schematically showing a bed on which a gas information acquisition device according to the first embodiment is arranged. Referring to FIG. 1 , the gas information acquisition device 3 has a gas suction and discharge device 1 and a cover structure 950 . In the example of FIG. 1, the gas suction and discharge device 1 is housed in the case 300 and cannot be visually recognized from the outside.

In FIG. 1, a mattress is laid on a bed 800 and the top and sides of the mattress are covered with sheets 810 . A cover structure 950 is arranged on a portion of the sheet 810 . Note that the bedding such as the bed 800 and the sheets 810 and the waterproof sheet described later are not essential components of the gas information acquisition device 3 , but may be components of the gas information acquisition device 3 .

Cover structure 950 includes cover 900 , tube 910 , and elastic bodies 933 and 934 . The cover 900 is a member that positions the tube 910 , can insert one end side of the tube 910 , and can accommodate the elastic bodies 933 and 934 . A cover structure 950 is formed by inserting one end of the tube 910 into the cover 900 and accommodating the elastic bodies 933 and 934 .

The other end of the tube 910 , one end of which is inserted into the cover 900 , is connected to the suction side of the gas suction and discharge device 1 . The gas suction/discharge device 1 to which the tube 910 is connected is arranged near the bed 800 . The gas suction and discharge device 1 is placed, for example, on the floor on which the bed 800 is placed.

The gas suction/discharge device 1 is a device that sucks gas in the vicinity of the cover 900 through a tube 910 and acquires information (odor, humidity, etc.) on the sucked gas. For example, when a patient wearing a diaper is lying on the cover 900 of the bed 800 , the gas suction and discharge device 1 sucks the odor associated with excretion of the patient through the tube 910 .

Since the tip side of the tube 910 inserted into the cover 900 is open, gas in the vicinity of the cover 900 can be sucked from the tip side of the tube 910 . If necessary, one or more holes for gas suction may be provided on the side of the tube 910 that is inserted into the cover 900 . Details of the gas suction/discharge device 1 will be described later.

FIG. 2 is a plan view illustrating the cover according to the first embodiment; FIG. Referring to FIG. 2, the cover 900 is formed by sewing an upper member and a lower member, which are made of, for example, two overlapping rectangular cloths, at positions indicated by broken lines. The size of the upper member and the lower member is, for example, about 1000 mm×500 mm.

The cover 900 has a first region 901 and a pair of second regions 903 and 904 separated by sewing. It should be noted that the cover 900 does not have to be entirely made of cloth. Materials other than cloth include rubber and vinyl.

A first region 901 is an elongated region in which a tube 910 can be arranged. The second regions 903 and 904 are located on both longitudinal sides of the first region 901 . In other words, the first region 901 is sandwiched between the pair of second regions 903 and 904 .

For example, the first region 901 has a length of about 850-950 mm and a width of about 10 mm. A slit 901c that penetrates only the upper member is provided in a substantially central portion of the first region 901 . The slit 901c can be provided, for example, approximately parallel to the direction in which the first region 901 extends, with a length of about L1=30 mm. When the upper member is made of cloth, it is preferable that the periphery of the slit 901c is stitched like a buttonhole so that the periphery of the slit 901c is not frayed.

In the cover 900, insertion openings 901a and 901b into which the tube 910 can be inserted are provided in one of the side portions of the second regions 903 and 904 opposite to the first region 901. As shown in FIG. In the example of FIG. 2, insertion openings 901a and 901b are provided on the side of the second region 904 opposite to the first region 901 (lower side in FIG. 2).

The side portion where the insertion openings 901a and 901b are provided includes a first portion where the upper member and the lower member are sewn together, and a second portion where the upper member and the lower member are not sewn together. Insertion openings 901a and 901b are included in the second portion.

More specifically, the insertion openings 901a and 901b are regions in which slits are formed without sewing. For example, if the length of the side portion provided with the insertion openings 901a and 901b is 1000 mm, the length of one slit can be about 100 mm.

Note that the tube 910 may be inserted through either of the insertion openings 901a and 901b. Normally, one of the insertion openings 901a and 901b is selected, and the tube 910 is inserted through the selected insertion opening to near the center of the first region 901 in the longitudinal direction. Either one of the insertion openings 901a and 901b may be provided, or both may be provided.

When both the insertion openings 901a and 901b are provided, the insertion openings 901a and 901b are preferably located on opposite sides of the center of one side in plan view. That is, it is preferable to provide the insertion opening 901a and the insertion opening 901b at two locations on the left and right. In the example of FIG. 2, one of the insertion openings 901a and 901b is provided at a position including one end of one side portion in plan view, and the other of the insertion openings 901a and 901b is provided at one side portion in plan view. It is provided at a position including the other end.

Note that a plan view of the cover 900 and the cover structure 950 means that the cover 900 and the cover structure 950 are arranged on the bed 800 as shown in FIG.

In the cover 900, two slit-shaped insertion openings 901a and 901b are provided at two locations on the left and right, so that the cover 900 can be rotated 180 degrees around the vicinity of the slit 901c in plan view (by reversing the left and right). ), regardless of the position of the bed, the tube 910 can be pulled out from either the head side or the foot side.

By pulling out the tube 910 from either the head side or the foot side, compared to pulling the tube 910 toward the floor below the bed 800, troubles associated with the installation of the tube 910 (bed/mattress and tube) are reduced. pinching, twisting of the tube, etc.) can be made difficult to occur.

Note that the slit-shaped insertion openings 901a and 901b can be formed by sewing the side portions of the cover 900 other than the slits.

FIG. 3 is a plan view illustrating both surface sides of the cover according to the first embodiment. The upper side of the arrow in FIG. 3 is the view seen from the upper member side, and the lower side of the arrow is the view seen from the lower member side. A slit 901c that penetrates only the upper member is provided at approximately the center of the first region 901, as shown on the upper side of the arrow in FIG. A slit 901d that penetrates only the lower member may be provided in the portion. In this case, even if only the insertion port 901a is provided, by turning the cover 900 upside down from the top to the bottom of the arrow in FIG. It can be pulled out from either side. The same applies when only the insertion port 901b is provided instead of the insertion port 901a.

It is preferable that the slits 901c and 901d have the same length (for example, L1=30 mm). As a result, an adapter 360, which will be described later, can be inserted through either the slit 901c or the slit 901d.

Whether to provide both the insertion openings 901a and 901b and only the slit 901c or to provide either one of the insertion openings 901a and 901b and the slits 901c and 901d takes into account ease of sewing. can be selected as appropriate.

Returning to the description of FIG. 2, the second area 903 located on one side in the longitudinal direction of the first area 901 is an area having a rectangular planar shape that can accommodate the elastic body 933 . A second region 904 positioned on the other side in the longitudinal direction of the first region 901 is a region having a rectangular planar shape that can accommodate the elastic body 934 .

In the second region 903, the vicinity of the central portion of the side portion located on the opposite side of the first region 901 is a non-sewn region, and serves as an insertion opening 903a for inserting the elastic body 933 into the second region 903. Become. In the second region 904, the vicinity of the central portion of the side portion located on the opposite side of the first region 901 is a non-sewn region, and serves as an insertion opening 904a for inserting the elastic body 934 into the second region 904. Become. The insertion openings 903a and 904a are not sewn and are open.

Redundant regions may be defined in portions of the first region 901 and the second regions 903 and 904 . For example, areas where the elastic bodies 933 and 934 are not inserted are surplus areas. For example, in FIG. 2, redundant regions 906 and 907 are defined on the sides of the second regions 903 and 904 in the direction in which the tube 910 extends (on either side of the regions where the elastics 933 and 934 are to be inserted). ing.

FIG. 4 is a plan view illustrating the cover structure according to the first embodiment; FIG. 5 is a cross-sectional view illustrating the cover structure according to the first embodiment, showing a cross section along line AA in FIG. 4 and 5, in the cover structure 950, one end side of the tube 910 is inserted up to the position of the slit 901c near the center of the first region 901 of the cover 900 in the longitudinal direction. Also, the elastic body 933 is housed in the second region 903 and the elastic body 934 is housed in the second region 904 .

The elastic bodies 933 and 934 are low-load elastic bodies made of a deformable material such as urethane rubber, for example. Examples of low-load elastic bodies other than urethane rubber include elastomer materials, natural rubber, and synthetic rubber (silicone rubber, urethane rubber, butyl rubber, isoprene rubber, etc.). Here, the low-load elastic body is a soft moldable material having elasticity such as rubber.

The elastic bodies 933 and 934 may be gel substances, water, hot water, air, or the like. By selectively using the elastic bodies 933 and 934 housed in the cover 900 depending on the season, the patient or the like on the bed can be placed in a comfortable environment. When the elastic bodies 933 and 934 contain water or hot water, the second regions 903 and 904 of the cover 900 are made of a material that does not allow water or hot water to leak. Note that the second regions 903 and 904 do not require air permeability.

The elastic bodies 933 and 934 do not have to be made of the same material or have the same shape. For example, if the elastic bodies 933 and 934 have different widths, the tube 910 is arranged at a position shifted from the center of the cover 900 .

Since the elastic body 933 is flexible, it can be easily accommodated in the second region 903 through the insertion opening 903a, which is shorter than the longitudinal direction of the elastic body 933, by deforming it. Similarly, since the elastic body 934 is flexible, it can be easily accommodated in the second region 904 through the insertion opening 904a, which is shorter than the longitudinal direction of the elastic body 934, by deforming it.

Redundant areas 906 and 907 can be tucked under the mattress when, for example, covering structure 950 is placed on bed 800 . For example, in FIG. 1, the cover 900 can be made a little longer in the direction of tube extension so that excess areas 906 and 907 can be tucked under the mattress. Thereby, displacement of the cover structure 950 with respect to the bed 800 can be suppressed. Surplus areas 906 and 907 may be used for other purposes. Note that only one of the surplus areas 906 and 907 may be provided.

Thus, the cover 900 is provided with at least one of the insertion openings 901a and 901b into which the tube 910 can be inserted on one side. As a result, the tube 910 can be easily pulled out toward the head side or the foot side of the bed 800 . That is, the cover 900 can be realized in consideration of the direction in which the tube 910 is pulled out.

In addition, by adopting a configuration in which both the insertion openings 901a and 901b and only the slit 901c are provided, or by adopting a configuration in which either one of the insertion openings 901a and 901b and slits 901c and 901d are provided, the position where the bed is installed can be changed. Regardless of the position, the tube 910 can be pulled out from either the head side or the foot side.

In addition, the cover 900 includes a first region 901 in which a tube 910 for sucking the odor associated with excretion can be arranged, and a pair of first region 901 located on both sides in the longitudinal direction of the first region 901 and capable of accommodating elastic bodies 933 and 934 . It has two regions 903 and 904 . Since the first region 901 has a structure that serves as a guide for the tube 910 , displacement of the tube 910 inserted into the first region 901 can be suppressed.

In the cover structure 950 in which one end side of the tube 910 is inserted into the first area 901 of the cover 900 and the elastic bodies 933 and 934 are accommodated in the second area 903, the elastic bodies 933 and 934 are placed on both sides of the tube 910. are placed. Since the tube 910 sandwiched between the elastic bodies 933 and 934 is guided by the opposing side surfaces of the elastic bodies 933 and 934, it is less likely to be affected by movements of the patient or the like on the bed. That is, the cover structure 950 suppresses displacement of the tube 910, and the tube 910 is substantially prevented from being displaced from the same position.

In addition, elastic bodies 933 and 934 are arranged on both sides of the tube 910, and the tube 910 is buried between the elastic bodies 933 and 934, so that a patient or the like on the bed does not touch the elastic bodies 933 and 934. However, it is difficult to touch the tube 910 . Therefore, the patient or the like on the bed does not feel a foreign object, and there is little possibility that the tube 910 will be crushed by the patient's buttocks.

In addition, in the cover structure 950, the cover 900, the tube 910, and the elastic bodies 933 and 934 are unitized. Therefore, even when the sheets are changed regularly, it is difficult to remove and attach the cover.

The tube 910 can suck gas near the cover structure 950 from the tip side of the tube 910 through the slit 901c or the like. is preferred.

FIG. 6 is a top perspective view of the adapter. FIG. 7 is a bottom perspective view of the adapter. FIG. 8 is a cross-sectional view (part 1) of the adapter. FIG. 9 is a cross-sectional view (2) of the adapter, showing how the tube is inserted into the adapter. 8 and 9 show vertical cross sections in a direction parallel to the below-described detachment suppressing portion 363 and passing through the center of the plate-like portion 361, which will be described later.

As shown in FIGS. 6 to 9, the adapter 360 is a member that can be attached to the end of the tube 910 that is not connected to the gas suction and discharge device 1 . The adapter 360 has a plate-like portion 361 , a tube insertion portion 362 and a detachment prevention portion 363 .

The plate-like portion 361 is formed, for example, in a disc shape (circular in plan view). As a result, it is possible to make it difficult for the person to be monitored to feel uncomfortable (rough feeling, etc.) when he/she is asleep. However, the plate-like portion 361 may have a shape other than the disc shape, such as a rectangular shape. The tube insertion portion 362 is an elongated member provided on the lower surface of the plate-like portion 361 and extending from the outer peripheral portion to the central portion of the plate-like portion 361 . The tube insertion portion 362 is formed in, for example, a rectangular parallelepiped shape. Regarding the adapter 360 , planar view means viewing from the normal direction of the upper surface of the plate-like portion 361 of the adapter 360 . The same is true for other adapters.

One end of the detachment preventing portion 363 continues from the tube insertion portion 362 , extends in the same direction as the longitudinal direction of the tube insertion portion 362 , and the other end protrudes from the outer circumference of the plate-like portion 361 . At least part of the portion of the detachment restraining portion 363 protruding from the plate-like portion 361 is inserted into the first region 901 via the slit 901c. This prevents the adapter 360 from coming off the cover 900 .

The maximum length L2 of the adapter 360 is longer than the length L1 of the slit 901c (see FIG. 2, etc.). Here, the maximum length L2 of the adapter 360 is the length of the extended line of the central axis of the detachment suppressing portion 363 from the tip of the plate-like portion 361 to the tip of the detachment suppressing portion 363 when the adapter 360 is viewed from above. is.

The plate-like portion 361 is provided with a gas suction port 361x that opens in the upper surface of the plate-like portion 361 and extends in a substantially vertical direction from the upper surface to the lower surface side. The tube inserting portion 362 is provided with a tube inserting port 362x that is open on the side surface of the tube inserting portion 362, extends in a direction substantially parallel to the upper surface of the plate-like portion 361, and communicates with the gas suction port 361x.

The side of the tube insertion port 362x near the gas suction port 361x has a smaller diameter to form a tube stopper 362y. The tube 910 inserted into the tube insertion port 362x stops at the position of the tube stopper 362y and is held by the tube insertion portion 362. As shown in FIG.

The gas suction port 361x and the tube insertion port 362x communicate with each other to form a channel that bends in a substantially L shape in cross-sectional view. By inserting the tube 910 into the tube insertion port 362x, gas can be sucked from the gas suction port 361x and flowed into the cavity of the tube 910 to reach the sensor 92 (described later).

In the adapter 360, the plate-like portion 361, the tube insertion portion 362, and the detachment prevention portion 363 are integrally formed, for example. The adapter 360 can be made of, for example, natural rubber, synthetic rubber (silicone rubber, urethane rubber, butyl rubber, isoprene rubber, etc.), thermoplastic elastomer, or the like. By making the adapter 360 from such a material, it can be easily inserted into the cover 900, and it is possible to make it difficult for the person to be monitored to feel uncomfortable (such as a rugged feeling) when lying down.

10 to 14 are diagrams explaining how to attach the adapter to the cover. First, as shown in FIG. 10, the tube 910 is inserted into the first region 901 through the insertion port 901a or 901b, and one end of the tube 910 is pulled out above the cover 900 through the slit 901c. Then, the adapter 360 is prepared.

Next, one end of the tube 910 is inserted into the tube insertion port 362x of the adapter 360, as shown in FIG. Insertion is performed until the tip of the tube 910 reaches the tube stopper 362y.

Next, as shown in FIG. 12, the tube 910 is bent so that the tube insertion portion 362 side of the adapter 360 faces upward, and the detachment suppressing portion 363 of the adapter 360 is positioned on the opposite side of the tube 910 from the slit 901c. 1 is inserted in the area 901 .

Next, as shown in FIG. 13 , the adapter 360 is attached to the cover 900 by lowering the tube insertion portion 362 side of the adapter 360 while returning the tube 910 pulled out of the cover 900 back into the first region 901 . FIG. 14 is a plan view of the state of FIG. 13 . Here, since the tube 910, the adapter 360 and the cover 900 are all made of soft materials and easily deformed, they can be attached in the states shown in FIGS.

Thus, the cavity of the tube 910 serving as the gas flow path extends in the direction parallel to the top surface of the bed 800, but the gas suction port 361x of the adapter 360 extends the gas flow path in the direction perpendicular to the top surface of the bed 800. are converting. As a result, the gas existing above the bed 800 (the direction in which the person to be monitored lies) can be reliably sucked. In the present application, "parallel" and "perpendicular" do not only refer to parallel and perpendicular in a strict sense, but also include substantially parallel and perpendicular to the extent that the effects of the present application are not impaired.

Moreover, since the adapter 360 has the detachment suppressing portion 363 , it can be reliably positioned on the cover 900 , and once attached to the cover 900 , it is difficult to detach from the cover 900 . Furthermore, the length L1 of the slit 901c and the maximum length L2 of the adapter 360 have a relationship of L1<L2. Therefore, after being attached in the state shown in FIGS. 13 and 14, the adapter 360 does not come off from the cover 900 in normal work (not forcibly removing the tube from the cover), and can be stably attached to the buttocks side. can breathe air.

FIG. 15 is a cross-sectional view of a modification of the adapter. The adapter 360A shown in FIG. 15 is different from the adapter 360 (see FIG. 8, etc.) in that it has a slit 364 that improves the bendability of the detachment restraining portion 363 . The slit 364 is provided between the plate-like portion 361 and the detachment suppressing portion 363 in the thickness direction of the adapter 360A. The slit 364 is provided substantially parallel to the upper surface of the adapter 360A and extends from the outer peripheral side of the plate-like portion 361 to the vicinity of the central portion.

By providing the slit 364 as in the adapter 360A, the flexibility of the detachment suppressing portion 363 is improved as compared to the case of the adapter 360, as shown in the lower side of the arrow in FIG. Therefore, it becomes easy to insert the detachment suppressing portion 363 into the slit 901c and mount the adapter 360A on the cover 900 at the position shown in FIG.

FIG. 16 is a plan view of a modification of the adapter; As in an adapter 360B shown in FIG. 16, instead of or in addition to the slit 364, a slit 365 for improving flexibility of the detachment restraining portion 363 may be provided. Two slits 365 are provided on both sides of the detachment suppressing portion 363 so as to penetrate the plate-like portion 361 in plan view. The two slits 365 are arranged so as to extend from the outer peripheral side of the plate-like portion 361 toward the vicinity of the central portion thereof, and are substantially parallel to the central axis of the detachment suppressing portion 363 .

By providing the slit 365 as in the adapter 360B, the flexibility of the detachment restraining portion 363 is improved as in the case of the adapter 360A. Therefore, it becomes easy to insert the detachment suppressing portion 363 into the slit 901c and attach the adapter 360B to the position of FIG.

FIG. 17 is a top side perspective view and the like of a modification of the adapter. An adapter 360C shown in FIG. 17 is composed of two parts, a first member 360f and a second member 360r. The adapter 360C has a structure in which the adapter 360 is divided into two approximately at the center. That is, the adapter 360C can be divided into a first member 360f that does not include the detachment suppressing portion 363 and a second member 360r that includes the detachment suppressing portion 363. As shown in FIG. The gas suction port 361x and the tube insertion port 362x are included in the first member 360f.

Two cylindrical protrusions 366 are provided on the first member 360f, and two grooves 367 are provided on the second member 360r. By fitting each projecting portion 366 into the groove portion 367, the first member 360f and the second member 360r are integrated to form an adapter 360C as indicated by the arrow in FIG.

Thus, the adapter 360C is composed of two parts. Therefore, in a state in which the first member 360f and the second member 360r are independent, the tube 910 is inserted into the tube insertion port 362x of the first member 360f, and the detachment suppressing portion 363 of the second member 360r is inserted into the slit 901c. can be done. After that, by fitting the projecting portion 366 of the first member 360f into the groove portion 367 of the second member 360r, the adapter 360C can be easily attached to the cover 900 at the position shown in FIG.

[Gas suction and discharge device 1, tube 910]
Details of the gas suction/discharge device 1, the tube 910, and the like will now be described.

18 is an enlarged perspective view of the vicinity of the case of the gas information acquisition device according to the first embodiment. FIG. FIG. 19 is a partially enlarged cross-sectional view of the vicinity of the case of the gas information acquisition device according to the first embodiment.

In the gas information acquisition device 3, the gas suction/discharge device 1 arranged in the case 300 sucks the gas in the measurement area through the tube 910 whose one end side is inserted into the cover 900, and the sucked gas is collected by the gas suction/discharge device. 1, and acquires gas information (such as odor and humidity) with the sensor 92. FIG. In this embodiment, the gas to be detected is air.

Specifically, as shown in FIGS. 18 and 19 , in the gas information acquisition device 3 , part of the gas suction and discharge device 1 is housed inside a box-shaped case 300 . Case 300, which is a housing, has, for example, a plate-shaped lower case 310 and a square-shaped upper case 320. As shown in FIG. The size of the case 300 is, for example, about 100 mm long×70 mm wide×40 mm high.

The upper case 320 has, for example, four side walls and an upper plate that closes the upper sides of the four side walls. The four side walls are, for example, integrally formed with the top plate. The lower case 310 is a lower plate that closes the lower sides of the four side walls. Alternatively, the upper case 320 may be plate-shaped, and the lower case 310 may be shaped like a box having four side walls and a lower plate closing the lower sides of the four side walls. The lower case 310 and the upper case 320 are made of, for example, ABS resin, and are fixed with screws or the like.

The gas suction/discharge device 1 has a tube joint 70 to which a tube 910 for sucking gas can be detachably attached. One end of the tube joint 70 is inserted into a hollow protrusion 51 provided on the gas suction side of the upper case 50 and attached detachably to the protrusion 51 .

Specifically, one end of the tube joint 70 is inserted into a through hole 52 (see FIG. 21 and the like, which will be described later for details) formed in the projecting portion 51 of the upper case 50 on the suction side of the gas suction and discharge device 1. there is The other end side of the tube joint 70 protrudes substantially horizontally from the side surface of the upper case 320 through a through hole provided in the upper case 320 . Therefore, the tube joint 70 can be attached and detached from the outside of the case 300 .

Part or all of the protruding portion 51 may protrude from the upper case 320 together with the other end side of the tube joint 70 . In the gas suction and discharge device 1 , the parts other than the part protruding from the upper case 320 are accommodated in the case 300 .

In the gas information acquisition device 3 , a tube 910 having one end inserted into the cover 900 is a hollow tubular member, and the other end is attached to the tube joint 70 . In other words, the tube 910 extends from the case 300 to the top of the bed 800, which is the gas information measurement area.

The cavity of tube 910 becomes part of the gas flow path. The tube 910 is made of, for example, an elastic material such as rubber or vinyl. The inner and outer diameters of the tube 910 can be appropriately determined as necessary, and are, for example, about several millimeters.

The tube joint 70 is a member for connecting the tube 910 . For example, when connecting the tube 910 , the tube 910 is fixed simply by inserting the tube 910 into the tube insertion port 71 . When the tube 910 is pulled out, it can be pulled out by pulling the tube 910 while pressing the opening 72 provided on the tube insertion port 71 side.

The gas information acquisition device 3 is used, for example, near a bed 800 placed in a hospital. For example, consider a case where a patient wearing a diaper is sleeping on a bed 800 as a person to be monitored.

In this case, when the gas suction/discharge device 1 in the gas information acquisition device 3 is operated constantly or intermittently, the gas near the buttocks of the patient is sucked from the tube 910 inserted in the cover 900 . The sucked gas is detected by the sensor 92 of the gas suction and discharge device 1 .

By analyzing the detection result of the sensor 92 with an analysis device arranged outside the gas information acquisition device 3 , information on the air in the vicinity of the patient's buttocks can be reliably acquired via the tube 910 . For example, if an odor sensor is used as the sensor 92, the information on the odor of the air in the vicinity of the patient's buttocks can be reliably acquired via the tube 910. FIG. Also, if a humidity sensor is used as the sensor 92, the information on the humidity of the air in the vicinity of the patient's buttocks can be reliably obtained via the tube 910. FIG.

For example, by analyzing the odor with an analysis device arranged outside the gas information acquisition device 3, excretion (urination or defecation) on the bed 800 can be easily detected. When the analysis device detects that excretion has been performed on the bed 800, the detection result is communicated to a nurse or the like in the hospital by voice, light flashing, etc., so that the nurse or the like can sleep on the bed 800, for example. It is possible to know when to change the diaper of a patient who is As a result, since the diaper can be changed in a short time after excretion, the time during which the patient is unsanitary and uncomfortable is also shortened. Since it is not a diaper that has been left unattended for a long time, the nurse or the like who changes it can also change it smoothly. In addition, sanitation can be ensured.

FIG. 20 is a perspective view illustrating the gas suction/discharge device according to the first embodiment. FIG. 21 is a cross-sectional view illustrating the gas suction/discharge device according to the first embodiment, showing a vertical cross section taken through the center of the gas suction/discharge device 1 . FIG. 22 is an exploded perspective view illustrating the gas suction/discharge device according to the first embodiment.

20 to 22, the gas suction and discharge device 1 mainly includes a lower case 10, a microblower 20, an upper case 50, a filter unit 60, a tube joint 70, and a wiring board 91. is doing. The lower case 10 and the upper case 50 are housing members that house the micro-blower 20 . It should be noted that the gas suction/discharge device 1 may not have the wiring board 91 and its mounted components. In that case, the wiring board 91 and its components can be mounted on a wiring board 401, which will be described later.

The gas suction/discharge device 1 is a device that sucks gas from the upper case 50 side and discharges it to the lower case 10 side by driving the piezoelectric element of the microblower 20 and detects odor, humidity, etc. with the sensor 92 . be.

The gas to be sucked and discharged is typically air. Gases to be sucked and discharged may be oxygen, nitrogen, carbon monoxide, hydrogen, carbon dioxide, hydrocarbons, VOCs (Volatile Organic Compounds), formaldehyde, CFC alternatives, various gases, and the like. Various gases include combustible gas, toxic gas, semiconductor material gas, inert gas, city gas, LP gas, and the like.

In this embodiment, for the sake of convenience, the upper case 50 side of the gas suction and discharge device 1 is defined as the upper side or one side, and the lower case 10 side is defined as the lower side or the other side. Also, the surface on the upper case 50 side of each part is defined as one surface or upper surface, and the surface on the lower case 10 side is defined as the other surface or lower surface. However, the gas suction and discharge device 1 can be used upside down, or can be arranged at any angle. In the gas suction/discharge device 1, the term "planar view" means that the object is viewed from the direction normal to the upper surface of the upper case 50, and the term "planar shape" means that the object is viewed from the direction normal to the upper surface of the upper case 50. shall refer to the shape of the Each part of the gas suction and discharge device 1 will be described below.

[Lower case 10, upper case 50, filter unit 60, tube joint 70]
The lower case 10 is arranged on the gas discharge side of the microblower 20 . The lower case 10 is a plate-like member made of, for example, ABS resin, and has a protruding portion 11 protruding on the bottom surface opposite to the micro-blower 20 . A through-hole 12 serving as a flow path for discharging gas from the microblower 20 is formed in the projecting portion 11 .

A concave portion 13x in which the main body 21 of the micro-blower 20 is arranged is provided at substantially the center of the upper surface of the lower case 10 . A recess 13 y in which the external connection terminal 22 of the micro-blower 20 is arranged is provided in the radial direction of the upper surface of the lower case 10 . For example, the recess 13x and the recess 13y are in communication. A recess 13z communicating with the recess 13y is provided on the upper surface side of the lower case 10 so as to surround the outside of the recess 13x. Six through-holes 14 into which screws for fixing the upper case 50 are inserted are formed in the outer peripheral side of the lower case 10 .

The gas suction and discharge device 1 has a micro-blower 20 and sealing members 41 to 43 arranged in contact with the lower case 10 or the upper case 50 . The sealing members 41 to 43 are members capable of suppressing gas leakage around the microblower 20 . The sealing members 41-43 are made of an elastically deformable material. Here, elastic deformation refers to a range of deformation in which an object returns to its original shape when the object is deformed by applying force within a certain range and the force is removed.

Materials for the sealing members 41 to 43 include, for example, a low-resilience cushion (urethane foam), a silicon rubber sheet, a gel sheet, and the like. The sealing members 41-43 may be made of the same material or may be made of different materials. Specific arrangement of the sealing members 41 to 43 will be described below.

The micro-blower 20 has a main body 21 and external connection terminals 22 projecting from the main body 21 . A flat frame-shaped sealing member 41 is arranged in the recess 13 x , and the main body 21 of the microblower 20 is arranged on the sealing member 41 . Here, the flat refers to a member that is wider than it is thick.

More specifically, the sealing member 41 is arranged between the main body 21 of the microblower 20 and the lower case 10 so as to be in contact with the outer periphery of the lower surface of the main body 21 (surface on the lower case 10 side) and the lower case 10 . ing. The upper surface of the lower case 10 and the upper surface of the micro-blower 20 are substantially flush with each other. The sealing member 41 suppresses air leakage from the mating surfaces of the micro-blower 20 and the lower case 10 .

A rectangular sealing member 42 is arranged in the recess 13 y , and the external connection terminals 22 of the micro-blower 20 are arranged on the sealing member 42 . That is, the sealing member 42 is arranged between the external connection terminals 22 and the lower case 10 and is in contact with the external connection terminals 22 and the lower case 10 .

An annular sealing member 43 surrounding the side surface of the main body 21 of the microblower 20 is arranged in the recess 13z. That is, the sealing member 43 is an annular member arranged around the side surface of the main body 21 and between the external connection terminal 22 and the upper case 50 and in contact with the surfaces of the lower case 10 and the upper case 50 facing each other. The sealing member 43 is, for example, an O-ring.

The external connection terminal 22 is sandwiched between the sealing member 42 and the sealing member 43, and the distal end side of the external connection terminal 22 passes between the sealing member 42 and the sealing member 43 to extend from the inside of the lower case 10 to the outside. Protruding. This enables electrical connection between the piezoelectric element 215a (described later) forming the microblower 20 and a circuit provided outside the gas suction/discharge device 1. FIG. The sealing member 42 and the sealing member 43 are sealing members for preventing a gap from being generated between the external connection terminal 22 of the microblower 20 and the lower case 10 and the upper case 50 .

The upper case 50 is arranged on the gas suction side of the microblower 20 . The upper case 50 is a plate-like member made of ABS resin or the like, and has a protruding portion 51 protruding in the opposite direction to the lower case 10 at substantially the center of the upper surface. A through hole 52 serving as a flow path for sucking gas is formed in a substantially central portion of the projecting portion 51 . An annular stepped portion 52 x is formed inside the through hole 52 . For example, six concave portions 53 (spot facing portions) are formed on the outer peripheral side of the upper surface of the upper case 50, and six through holes 54 are formed in each of the concave portions 53 for inserting screws for fixing to the lower case 10. It is

The lower case 10 and the upper case 50 are fixed by screws 80 with the micro-blower 20 and the sealing member 43 interposed therebetween, but they are not adhered to each other. be.

The filter unit 60 is arranged closer to the gas suction side than the microblower 20 . Filter unit 60 is inserted into through hole 52 of upper case 50 . The filter unit 60 has a filter 61 and a filter support 62, for example. The filter support 62 is, for example, fixed to the outer periphery of the filter 61 on the microblower 20 side with double-sided tape. The double-sided tape can have the same shape as the filter support 62, for example.

In the filter unit 60, the outer peripheral portion of the filter support 62 is positioned within the through hole 52 at the step portion 52x. That is, the stepped portion 52 x holds the outer peripheral portion of the filter unit 60 . The filter unit 60 is not fixed with an adhesive or the like. That is, the filter unit 60 is detachably held by the step portion 52x.

Filter 61 is circular, for example. The filter 61 is a member that prevents dust and dirt from entering the inside of the gas suction and discharge device 1, and is preferably capable of removing submicron-level dust and dirt. The filter 61 can be made of, for example, polyester, polyethylene, rayon, polypropylene, or the like, but any material can be used as long as it has the above functions. The filter support 62 is ring-shaped, for example. Filter support 62 is made of, for example, a polyimide film. The filter support 62 side is the gas discharge side.

Note that the filter support 62 may be provided as required. For example, if the strength of the filter 61 is sufficient, the filter support 62 may not be provided. Alternatively, filter supports may be provided on both sides of the filter 61 if the strength of the filter 61 is insufficient.

The gas sucked from the upper case 50 side is discharged to the lower case 10 side via the filter unit 60 . By arranging the filter unit 60 closer to the gas suction side (upper case 50 side) than the microblower 20 , it is possible to prevent dust, dirt, and the like from entering the inside of the gas suction and discharge device 1 .

One end side of the tube joint 70 is inserted into the through hole 52 of the upper case 50 . For example, a female thread is formed on the inner wall of the through hole 52, and a male thread is formed on the portion of the tube joint 70 that is inserted into the through hole 52, and the two are screwed together. When the tube joint 70 is attached to the projecting portion 51 , the filter unit 60 is arranged in the projecting portion 51 closer to the micro-blower 20 than the tube joint 70 is.

As described above, the filter unit 60 is detachably held by the step portion 52x. Also, as described above, the tube joint 70 protrudes from the side surface of the upper case 320 . Therefore, when the filter unit 60 is clogged, the filter unit 60 can be easily replaced without opening the case 300 by removing the tube joint 70 screwed to the upper case 50 . For example, by periodically exchanging the filter unit 60, a specified amount of air can be stably sucked from the microblower 20 at all times, so that gas information (for example, odor) can be obtained accurately.

[Micro blower 20]
23 is a plan view illustrating the micro-blower of the gas suction and discharge device according to the first embodiment; FIG. 24 is a cross-sectional view illustrating the micro-blower of the gas suction/discharge device according to the first embodiment, showing a cross section taken along line BB of FIG. 23. FIG.

Referring to FIGS. 23 and 24, the micro-blower 20 is a device for sucking and discharging gas by driving a piezoelectric element, and has a main body 21 and external connection terminals 22 . The size of the main body 21 is, for example, about 20 mm long×20 mm wide×2 mm high.

The body 21 has an outer case 211 and an inner case 212 . The outer case 211 covers the outside of the inner case 212 with a predetermined gap in a non-contact manner. The outer case 211 has a cylindrical hollow portion 211a with an upper opening, and a circular inner case 212 is accommodated in the hollow portion 211a with a predetermined gap.

The inner case 212 is elastically supported by the outer case 211 via, for example, a spring connecting portion 214 . A gas inflow passage 217 a is formed between the outer case 211 and the inner case 212 . A plurality of spring connecting portions 214 (four in the example of FIGS. 23 and 24) are provided at intervals in the circumferential direction between the inner wall portion of the outer case 211 and the outer wall portion of the inner case 212 .

The inner case 212 is open at the top, and a diaphragm 215 is fixed so as to close the opening of the inner case 212 , and a first blower chamber 216 is formed between the inner case 212 and the diaphragm 215 . The diaphragm 215 has a unimorph structure, for example, in which a piezoelectric element 215a made of piezoelectric ceramic is attached to the central portion of a diaphragm 215b made of a thin elastic metal plate. By applying a voltage of a predetermined frequency to the piezoelectric element 215a, the diaphragm 215 as a whole is resonantly driven in a bending mode. The piezoelectric element 215a is fixed, for example, to the surface of the diaphragm 215b opposite to the first blower chamber 216 side.

A wall portion 212 a of the inner case 212 facing the diaphragm 215 constitutes one wall surface of the first blower chamber 216 . A through hole 212b is formed in a portion of the wall portion 212a that faces the central portion of the vibration plate 215 so that the inside and the outside of the first blower chamber 216 communicate with each other. A wall portion 211b is provided at a portion of the outer case 211 facing the wall portion 212a, and a through hole 211c is formed at the central portion of the wall portion 211b, that is, at a portion facing the through hole 212b. The through hole 211c serves as a gas outlet. A predetermined inflow space 217b is formed between the wall portion 211b and the wall portion 212a, and the inflow space 217b constitutes a part of the aforementioned inflow passage 217a. The inflow space 217b has a role of guiding the gas introduced from the inflow passage 217a to the vicinity of the through holes 212b and 211c.

A wall portion 219 for forming a second blower chamber 218 with the diaphragm 215 is provided on the upper surface side of the outer case 211, that is, on the side opposite to the first blower chamber 216 via the diaphragm 215. . The wall portion 219 is, for example, a lid member fixed so as to close the opening of the upper end portion of the outer case 211 . An opening 219 a is formed in the central portion of the wall portion 219 to allow communication between the outside and the second blower chamber 218 .

The volume of the second blower chamber 218 and the opening area of the opening 219a are set so as to form a pseudo-resonant space as the diaphragm 215 vibrates. The second blower chamber 218 and the inflow passage 217a are interconnected. Therefore, the gas that has flowed into the second blower chamber 218 through the opening 219a is supplied to the inflow space 217b through the inflow passage 217a.

In the microblower 20, when an AC voltage of a predetermined frequency is applied to the piezoelectric element 215a through the external connection terminal 22, the vibration plate 215 is resonantly driven, and the volume of the first blower chamber 216 changes periodically. When the volume of the first blower chamber 216 increases, the air in the inflow space 217b is sucked into the first blower chamber 216 through the through holes 212b. Conversely, when the volume of the first blower chamber 216 decreases, the air inside the first blower chamber 216 is discharged through the through hole 212b into the inflow space 217b.

Since the diaphragm 215 is driven by a high frequency, the high-speed, high-energy gas flow discharged from the through hole 212b into the inflow space 217b passes through the inflow space 217b and is discharged from the through hole 211c. At this time, surrounding gas in the inflow space 217b is discharged from the through hole 211c while being involved. Therefore, a continuous flow of gas from the inflow passage 217a toward the inflow space 217b is generated, and the gas is continuously discharged as a jet from the through hole 211c. The gas flow is indicated by arrows in FIG.

[Wiring board 91, etc.]
Returning to the description of FIGS. 20 to 22, the wiring board 91 is mounted with a sensor 92, an IC 93, a connector 94, and the like. The wiring board 91 is fixed by a screw 81 to, for example, a columnar spacer 95 projecting from the lower surface of the lower case 10 to the side opposite to the upper case 50 .

The sensor 92 is arranged on the gas discharge side of the microblower 20 and has a function of acquiring gas information. In this embodiment, the sensor 92 is arranged on the gas discharge side of the projecting portion 11 of the lower case 10 and acquires information on the gas discharged from the through hole 12 . The diameter of the through-hole 12 may be enlarged and the sensor 92 may be arranged within the through-hole 12 . In this case, since the side surface of the sensor 92 is surrounded by the inner wall of the through hole 12, the detection power of the sensor 92 can be improved. Also, two or more through-holes may be provided through which the sensor 92 acquires gas information.

The sensor 92 is, for example, an odor sensor that detects the odor of gas as information on the gas discharged from the through hole 12 . As the odor sensor, for example, a well-known sensor such as a semiconductor type or a crystal oscillator type can be used. Note that the sensor 92 may be a humidity sensor, temperature sensor, or other sensor. Two or more sensors 92 may be mounted on the wiring board 91 .

The wiring board 91 is a resin board such as a glass epoxy board, a silicon board, a ceramic board, or the like on which wiring patterns, component mounting lands, and the like are formed. The wiring board 91 is provided with a connector 94 for inputting/outputting signals from/to the outside of the gas suction/discharge device 1, wires, and the like. An IC 93 including a circuit for driving the piezoelectric element 215a may be mounted on the wiring board 91 . Two or more ICs 93 may be mounted on the wiring board 91 .

By installing the sensor 92 as in the gas suction and discharge device 1, it becomes possible to easily detect the smell, humidity, and the like of the gas.

As described above, since the gas suction/discharge device 1 uses a micro-blower that drives a piezoelectric element to suck and discharge gas, it can be made smaller than a conventional pump that drives a motor or the like. As a result, it is possible to reduce the size of the gas information acquisition device 3 having the gas suction and discharge device 1 as a main part.

Also, in order to ensure the performance of the micro-blower 20, it is necessary to take measures against air leakage at the mounting portion. Therefore, in the gas information acquisition device 3, a sealing member 41 is sandwiched between the outer periphery of the lower surface of the main body 21 of the microblower 20 and the lower case 10 to eliminate the gap between the main body 21 and the lower case 10, thereby preventing air leakage. is reduced.

Since the microblower 20 is a precisely manufactured device, no load should be applied to it. Therefore, it is preferable that the portion where the sealing member 41 and the main body 21 of the micro-blower 20 contact is the outer peripheral portion of the main body 21 so as not to apply a load to the piezoelectric element inside the main body 21 .

Furthermore, in the gas information acquisition device 3, the gap between the lower case 10 and the upper case 50 is eliminated by inserting the sealing member 43 in the gap between the mating surfaces of the lower case 10 and the upper case 50 on which the microblower 20 is arranged. Reduces air leaks. In addition, a sealing member 42 is also arranged in the portion where the external connection terminal 22 of the microblower 20 is pulled out to the outside, and the external connection terminal 22 is sandwiched between the sealing member 42 and the sealing member 43 to eliminate a gap and prevent air from entering. Reduces leakage.

By incorporating these measures against air leakage, the microblower 20 can send the air sucked from the tube 910 to the sensor 92 without leakage, so that gas information (for example, odor) can be obtained accurately.

In general, the micro-blower is attached to the case with double-sided tape, but with the method using double-sided tape, if the micro-blower is attached with even a slight deviation from the specified position, it will be necessary to remove the micro-blower from the double-sided tape. necessary. This operation degrades the performance of the microblower, resulting in the disposal of an expensive device, resulting in a very large loss. Since the gas information acquisition device 3 does not use a double-sided tape to attach the microblower 20, such a problem does not occur.

In addition, since the gas suction and discharge device 1 uses only one tube, the number of micro-blowers to be connected and the number of other parts and electric circuits to be used can be reduced, so that the size of the gas information acquisition device 3 can be reduced. Become. In addition, due to the miniaturization of the gas information acquisition device 3, the degree of freedom of the installation location of the gas information acquisition device 3 is also improved.

In addition, since the gas suction and discharge device 1 uses only one tube, the amount (length) of the tube to be used can be greatly reduced compared to the conventional device that uses about six tubes. It is possible and has a price advantage.

In addition, since the gas suction and discharge device 1 uses only one tube, the structure of the gas suction and discharge device 1 is simple, and maintenance is easy.

The gas suction and discharge device 1 may be equipped with a sensor for detecting clogging of the filter 61 of the filter unit 60 (gas suction amount). Such sensors include, for example, strain gauges. Information on the tube 910 (collapse, bend, clogged hole, etc.) can also be detected by the strain gauge.

That is, the gas sucked by the microblower 20 applies a load to the strain gauge. This deforms the strain gauge and changes the resistance value of the resistor of the strain gauge. By measuring the change in the resistance value of the resistor, the clogging state of the filter 61 and the state of the tube 910 can be detected.

<Modification 1 of the first embodiment>
Modification 1 of the first embodiment shows an example in which a mounting portion capable of mounting the case to an external member is provided on the outside of the case. In addition, in Modification 1 of the first embodiment, the description of the same components as those of the already described embodiment may be omitted.

25 is a perspective view schematically showing a bed on which a gas information acquisition device according to Modification 1 of the first embodiment is arranged; FIG. Referring to FIG. 25, the gas information acquisition device 3A is different from the gas information acquisition device 3 (see FIG. 1 etc.) in that the case 300 is attached to the handrail of the bed 800 by the attachment portion 340 .

The attachment portion 340 is made of metal or resin, for example, and is attached to one side of the case 300 with screws or the like. The attachment portion 340 is, for example, a so-called hook. Note that the attachment portion 340 is not limited to a hook-shaped member, and may be a belt-shaped member, for example. Alternatively, the attachment portion 340 may be a protrusion that protrudes outward from the case 300, and the protrusion may be fitted into a hole provided in the handrail of the bed, or may have any other shape.

By attaching the case 300 to the handrail or the like of the bed 800 using the attachment portion 340 in this way, it is possible to reduce the risk of the tube 910 being caught by the person to be monitored when he/she ascends or descends from the bed 800. It is possible to reduce the risk of dust and the like adhering. In addition, the gas information acquisition device 3A as a whole can be moved together with the bed 800 . This eliminates the need for installation work such as insertion and removal of the tube 910 accompanying movement, and prevents the foot (wheel) of the bed 800 from trampling or catching the tube 910 when the bed 800 is moved.

In addition, the operation of tilting and raising/lowering the bed 800 by remote control is frequently performed. Therefore, when the case 300 is placed on the floor, it is necessary to lengthen the tube 910 in advance, and troubles such as the tube 910 being caught are likely to occur. However, by arranging the case 300 integrally with the bed 800 using the attachment portion 340, the length of the tube 910 can be optimized, so that this kind of trouble can be suppressed.

In FIG. 25 , the case 300 is attached to the handrail of the bed 800 with the attaching portion 340 so that the longitudinal direction of the case 300 faces the horizontal direction. However, as shown in FIG. 26, the case 300 may be attached to the handrail of the bed 800 with the attaching portion 340 so that the longitudinal direction of the case 300 is oriented vertically.

In order to correspond to both FIGS. 25 and 26, for example, by providing a plurality of screw positions, the mounting portion 340 can be attached to any one side of the case 300 in a direction that can be changed by 90 degrees. is preferred. 26, the tube 910 is connected to the case 300 through a through-hole provided in the handrail of the bed 800. As shown in FIG.

In this way, it is preferable that the attachment portion 340 can be attached to the outside of the case 300 at a plurality of angles. Of course, changing the mounting angle by 90 degrees is an example, and may be changed by an angle other than 90 degrees.

<Modification 2 of the first embodiment>
Modification 2 of the first embodiment shows an example in which a waterproof sheet is arranged on the bed. In addition, in the modification 2 of the first embodiment, the description of the same components as those of the already described embodiment may be omitted.

FIG. 27 is a perspective view schematically showing a bed on which a gas information acquisition device according to modification 2 of the first embodiment is arranged. Referring to FIG. 27, a sheet 810 is arranged on the bed 800 in the same manner as in FIG. Further, a waterproof sheet 850 is arranged on the sheet 810 so as to cover the cover structure 950 .

By arranging the waterproof sheet 850 so as to cover the cover structure 950, replacement of the cover structure 950 becomes unnecessary by replacing the waterproof sheet 850 even when the bed becomes dirty. That is, the maintenance frequency of the cover structure 950 can be significantly reduced. In addition, the waterproof sheet 850 may have a structure in which a plurality of layers are laminated in order to improve the waterproof performance.

Specifically, the waterproof sheet 850 has, for example, a three-layer structure in which a polyester layer, a heat-resistant polyurethane layer, and a polyester layer are sequentially laminated. With this structure, since moisture such as urine does not pass through, the bed 800 is not soiled, but it is difficult for air to pass through.

Here, when using the adapter 360 shown in FIG. Due to the presence of the waterproof sheet 850 in the vicinity, the adapter 360 does not suck in much air on the buttock side, but rather sucks air in the vicinity of the elastic bodies 933 and 934 .

In this case, the air on the side of the mattress (the side opposite to the buttocks) is sucked in, resulting in little information on odors related to feces and urine, and in some cases leading to erroneous detection. Therefore, as the elastic bodies 933 and 934, it is preferable to use a material having poorer (or no) air permeability than the waterproof sheet 850, such as a polyethylene material or rubber foam material. Alternatively, the elastic members 933 and 934 may be made of a material having good air permeability, which is thermally laminated or the like so as to have poorer air permeability (or no air permeability) than the waterproof sheet 850 .

The breathability can be measured, for example, by a predetermined measurement method specified in JIS L 1096 (breathability test).

Further, for the cover 900 as well, it is preferable to use a material having less air permeability (or no air permeability) than the waterproof sheet 850, such as nylon (registered trademark), polyester, rayon, rubber foam material, pile laminate material, or the like. Furthermore, the size of the buttocks (the area near the buttocks) excluding the gas suction port 361x of the adapter 360 on the cover 900 is laminated with an iron or the like using polyvinyl chloride or the like, and is removed from the waterproof sheet 850. Poor ventilation may be used.

By executing one or more of these, air can be stably sucked from the waterproof sheet 850 with poor air permeability. This makes it possible to detect excretion or the like by stably sucking air from the buttock side.

Also, as shown in FIG. 28, it is also effective to attach a double-sided tape 368 to the upper surface of the plate-like portion 361 of the adapter 360 so as not to block the gas suction port 361x. By attaching the upper surface of the plate-like portion 361 to the lower surface of the waterproof sheet 850 with double-sided tape 368, the two adhere to each other, so air can be stably sucked from the waterproof sheet 850 having poor air permeability. This makes it possible to detect excretion or the like by stably sucking air from the buttock side.

When the waterproof sheet 850 is arranged so as to cover the cover structure 950 and the adapter 360 is used, the color of the upper surface of the plate-like portion 361 of the adapter 360 is different from that of the waterproof sheet 850. is preferred. This is because the position of the adapter 360 can be confirmed even when viewed from above the waterproof sheet 850 . The color of the upper surface of the plate-like portion 361 of the adapter 360 can be a dark color such as black, for example. The same applies when using an adapter other than the adapter 360 .

<Second embodiment>
In the second embodiment, an example of a gas information acquisition device in which soundproofing measures are taken in the case is shown. In addition, in the second embodiment, the description of the same components as those of the already described embodiment may be omitted.

In the gas suction and discharge device according to the second embodiment, an upper case 320A is used instead of the upper case 320 in the case 300. As shown in FIG. FIG. 29 is a perspective view (No. 1) showing the upper case according to the second embodiment upside down, showing a state in which no parts are attached to the upper case 320A.

As shown in FIG. 29, the upper case 320A is, for example, shaped like a box having four side walls and an upper plate (lower side in FIG. 29) like the upper case 320. As shown in FIG. Alternatively, the upper case 320A may be plate-shaped, and the lower case 310 may be shaped like a box having four side walls and a lower plate closing the lower sides of the four side walls. The lower case 310 and the upper case 320A are made of, for example, ABS resin and fixed with screws or the like.

Through holes 321, 322, and 323 are provided in the side wall of the upper case 320A, and three through holes 324 are provided in the upper plate (lower surface in FIG. 29). The upper plate (lower side in FIG. 29) of the upper case 320A is provided with one boss 326 for fixing the board and four bosses 327 for fixing the lower case. Further, inside the case 300, for example, on the side of the upper case 320A, there is provided a separation wall 325 that separates a first region where the gas suction and discharge device 1 is arranged and a second region where the wiring board 401 is arranged. there is

The height of the side wall of the upper case 320A and the height of the separation wall 325 are substantially equal with the upper surface of the upper case 320A (lower side in FIG. 29) as a reference. In addition, regarding the case 300, a planar view means viewing from the normal direction of the upper surfaces of the upper cases 320 and 320A.

FIG. 30 is a perspective view (Part 2) showing the upper case according to the second embodiment upside down, showing a state where parts are attached to the upper case 320A.

As shown in FIG. 30, the gas suction/discharge device 1 and a wiring board 401 electrically connected to the gas suction/discharge device 1 are arranged in the upper case 320A. By fixing the lower case 310 to the upper case 320A with screws or the like, a part of the gas suction and discharge device 1 and the wiring substrate 401 are accommodated in the case 300 which is a housing.

The gas suction/discharge device 1 is arranged in a first region surrounded by the side wall of the upper case 320A and the separation wall 325 . The tube joint 70 of the gas suction and discharge device 1 is inserted into the through hole 321 and partially protrudes from the side surface of the upper case 320A. The gas suction/discharge device 1 is electrically connected to the wiring board 401 via the flexible board 404 .

In the example of FIG. 30, the separation wall 325 is substantially U-shaped in plan view, and the gas suction/discharge device 1 is fixed to one side wall of the upper case 320A. 325 surrounds the gas suction and discharge device.

The upper end of the separation wall 325 (lower side in FIG. 30) is in contact with the upper plate of the upper case 320A. Also, when the lower case 310 is attached to the upper case 320A in the state of FIG. Thereby, the first area where the gas suction and discharge device 1 is arranged is defined by one side wall of the upper case 320A, the separation wall 325, the upper plate of the upper case 320A, and the lower case 310. As shown in FIG. In addition, the separation wall 325 is not limited to a substantially U shape in a plan view, and may be a substantially I shape in a plan view, for example.

The wiring board 401 is mounted with a power jack 402, a power switch 403, an LED, an IC, a connector, and the like (not shown). A portion of the power jack 402 is exposed to the outside through the through hole 322 , and a portion of the power switch 403 is exposed to the outside through the through hole 323 . Also, an LED (not shown) is mounted at a position visible from the outside of the through hole 324 .

When the piezoelectric element 215a is driven, the micro-blower 20 provided in the gas suction/discharge device 1 starts sucking air, but the noise when the piezoelectric element 215a is driven is so small that it cannot be heard. However, the sucked air produces a sound as "wind noise". The gas suction and discharge device 1 detects excretion and the like when air is sucked in for one second every eight seconds, for example. Especially at night, the noise from the surroundings is very small, so "wind noise" is more worrisome.

Therefore, in this embodiment, the interior of the case 300 is separated by the separation wall 325 into a first area where the gas suction and discharge device 1 is arranged and a second area where the wiring board 401 is arranged. As a result, when the lower case 310 and the upper case 320A are fixed, the area where the gas suction and discharge device 1 is arranged can be substantially sealed by the lower case 310, the upper case 320A, and the separation wall 325. By providing the separation wall 325 that substantially seals the first region where the gas suction and discharge device 1 is arranged, the "wind noise" generated when the microblower 20 sucks air is reduced and hardly transmitted to the outside of the case 300. be able to.

FIG. 31 is a perspective view (No. 3) showing the upper case according to the second embodiment turned upside down, showing a state where parts are attached to the upper case 320A. FIG. 32 is a plan view showing an upside down upper case according to the second embodiment, showing a state where components are attached to the upper case 320A.

As shown in FIGS. 31 and 32 , in the first region, a sound absorbing sheet 328 may be arranged between the surface of the separation wall 325 exposed in the first region and the gas suction and discharge device 1 . The sound absorbing sheet 328 can be arranged, for example, between the surface of the separation wall 325 exposed in the first region and the guide 329 . Without providing the guide 329, the sound absorbing sheet 328 may be attached to the surface of the separation wall 325 exposed in the first region with double-sided tape or the like.

By arranging the sound absorbing sheet 328 in the first area, it is possible to further reduce the "wind noise" generated when the microblower 20 sucks in air, making it more difficult for the noise to be transmitted to the outside of the case 300. - 特許庁From the viewpoint of improving the soundproofing effect, the sound absorbing sheet 328 is preferably arranged so as to contact the entire surface of the separation wall 325 exposed in the first region. Moreover, the sound absorbing sheet 328 is preferably of a deodorizing type.

As a material for the sound absorbing sheet 328, for example, a sound absorbing material made of a porous material such as soft urethane foam or glass wool can be used. Since sound absorbing materials have various characteristics, it is preferable to analyze the frequency of "wind noise" and select a material that can effectively absorb that frequency. It is also possible to optimize the sound absorption characteristics according to the hearing of the person using the gas suction and discharge device 1 .

As in the upper case 320B shown in FIG. 33, the mounting plate 330 to which the gas suction and discharge device 1 is attached in advance may be separately provided and configured to be attachable to the opening 320x provided in one side wall of the upper case 320B. . The opening 320x can be provided, for example, so as to expose the entire first region. Although the mounting plate 330 is illustrated as being transparent in FIG. 33, it is not necessary to use a transparent member as the mounting plate 330 . The mounting plate 330 can be made of, for example, ABS resin.

The mounting plate 330 is mounted with screws or the like, for example, so as to close the opening 320x of the upper case 320B. The mounting plate 330 is fixed so as to close the opening 320x, and constitutes at least part of one side wall of the upper case 320B. The mounting plate 330 may be fixed so as to block the opening 320x, and constitute the entire side wall of the upper case 320B.

In this manner, the attachment plate 330 to which the gas suction/discharge device 1 is attached in advance is separated and attached to the upper case 320B, thereby facilitating the attachment of the gas suction/discharge device 1. FIG.

A sound pressure sensor that measures the sound pressure generated from the case 300 may be installed outside the case 300 . By detecting that the level of the sound pressure sensor exceeds the specified value, it is possible to know that an abnormality has occurred in the state of the air sucked from the tube 910, so that it is possible to notify that appropriate detection has not been performed. It becomes possible.

Although the preferred embodiments and the like have been described in detail above, the present invention is not limited to the above-described embodiments and the like, and various modifications and substitutions can be made to the above-described embodiments and the like without departing from the scope of the claims. can be added.

For example, in each embodiment and its modifications, the measurement area is on the bed, but the measurement area is not limited to the bed. It should be above. Bedding includes, for example, beds, futons, mattresses, sheets, cushion materials, and the like.

1 gas suction and discharge device 3, 3A gas information acquisition device 10 lower case 11 protrusions 12, 14, 54 through-holes 13x, 13y, 13z recesses 20 micro-blower 21 main body 22 external connection terminals 41, 42 sealing member 43 O-ring, 50 upper case, 51 protrusion, 52 through-hole, 52x step, 60 filter unit, 61 filter, 62 filter support, 70 tube joint, 71 tube insertion port, 72 opening, 80, 81 screw, 91 wiring board, 92 sensor, 93 IC, 94 connector, 211 outer case, 211a cavity, 211b, 212a, 219 wall, 211c, 212b through hole, 212 inner case, 214 spring connecting portion, 215 diaphragm , 215a piezoelectric element 215b diaphragm 216 first blower chamber 217a inflow passage 217b inflow space 218 second blower chamber 219a opening 300 case 310 lower case 320, 320A, 320B upper case 320x opening , 321, 322, 323, 324 through hole, 325 separation wall, 326, 327 boss, 328 sound absorbing sheet, 330 mounting plate, 340 mounting portion, 360, 360A, 360B, 360C adapter, 361 plate-like portion, 361x gas suction port , 362 tube insertion portion, 362x tube insertion port, 362y tube stopper, 363 detachment suppressing portion, 364, 365 slit, 360f first member, 360r second member, 366 projection portion, 367 groove portion, 368 double-sided tape, 401 wiring board, 402 power jack, 403 power switch, 404 flexible substrate, 800 bed, 810 sheet, 850 waterproof sheet, 900 cover, 901 first region, 901a, 901b, 903a, 904a insertion port, 901c, 901d slit, 903, 904 second Areas 906, 907 Surplus area 910 Tube 933, 934 Elastic body 950 Cover structure

Claims (13)

a microblower for sucking and discharging gas;
a housing member housing the micro-blower;
and a sealing member disposed in contact with the micro-blower and the housing member. The housing member has a first housing member arranged on the gas suction side of the micro-blower and a second housing member arranged on the gas discharge side of the micro-blower,
The micro-blower has a main body and an external connection terminal protruding from the main body,
The sealing member is a first sealing member disposed between the main body and the second housing member so as to be in contact with an outer peripheral portion of a surface of the main body on the second housing member side and the second housing member. 2. A gas evacuation device according to claim 1, comprising a member. 3. The gas according to claim 2, wherein the sealing member includes a second sealing member disposed between the external connection terminal and the second housing member and in contact with the external connection terminal and the second housing member. Suction discharge device. The sealing member is arranged around the side surface of the main body and between the external connection terminal and the first housing member, and is in contact with the mutually facing surfaces of the first housing member and the second housing member. 4. The gas suction and discharge device according to claim 3, comprising a third sealing member. 5. The gas suction and discharge device according to claim 4, wherein said external connection terminal is sandwiched between said second sealing member and said third sealing member, and protrudes outside from inside said housing member. 6. The gas suction and discharge device according to claim 1, wherein said sealing member is made of an elastically deformable material. 7. The gas suction and discharge device according to any one of claims 1 to 6, further comprising a sensor for acquiring information on said gas. 8. The gas suction and discharge device according to claim 7, wherein the sensor is an odor sensor that detects an odor of the gas as the information on the gas. 9. The gas suction and discharge device according to any one of claims 1 to 8, further comprising a filter unit arranged closer to the gas suction side than the microblower. A tubular member for sucking the gas has a detachable joint,
One end of the joint is inserted into a hollow protrusion provided on the gas suction side of the housing member, and is detachably attached to the protrusion,
10. The gas suction/discharge device according to claim 9, wherein said filter unit is disposed closer to said micro-blower than said joint in said projecting portion. The gas suction and discharge device according to claim 10;
a housing that houses a portion of the housing member;
the other end side of the joint protrudes from the housing,
The gas information acquisition device, wherein the joint is detachable from the outside of the housing. 12. The gas information acquisition device according to claim 11, wherein said tubular member is attached to said joint and extends to a measurement area of said gas information. 13. The gas information acquisition device according to claim 12, wherein the measurement area is on a bedding.

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