JPH0247944Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is mainly used by laying it on a bed or chair, or by wrapping it around the hands and feet, to promote blood circulation on the body surface. To provide an air mat device capable of adjusting the pressing state of the body surface in relation to the air mat device used for prevention of bedsores and pine surges of the lower back, back, hands, feet, etc.

[Prior Art and Problems] An air mat device has been developed in which a plurality of air cylinders are arranged in a grid pattern and are inflated and deflated alternately. (Utility Model Application No. 58-53033, Utility Model Application No. 58-53034) The latest air mat device developed by the present inventor is shown in FIG. In this device, a plurality of air cylinders 3 are connected to an air source via a switching valve 2, and the switching valve 2 controls expansion and contraction of each air cylinder 3. However, in this device, the switching valve 2 and the air cylinder 3 are connected, and the connection state cannot be easily changed. For this reason, there is a drawback that it is difficult to change the expansion and contraction states of each air cylinder 3, such as the order in which the air cylinders 3 expand or contract.

Depending on the preference of the user, the air cylinders 3 of the mat main body 1 may be expanded in order toward adjacent air cylinders.
It may be preferable to deflate, or it may be preferable to divide the entire air cylinder into 2 to 6 sets and expand and contract each set of air cylinders together to create waves at multiple wavelengths.

The air mat device shown in FIG. 1 expands the air cylinder 3,
To change the contraction, selector valve 2 and mat body 1
It was necessary to pull out the air hose 5 connecting the switch valve 2 from the switching valve 2 and change the connection. For this reason, the mat main body 1 has a drawback in that the state of expansion and contraction cannot be easily changed.

In order to eliminate these drawbacks, this invention connects a control means between the output side of the switching valve and the mat main body to change the connection between the air cylinder and the output side of the switching valve. , the important purpose of this invention is to
To provide an air mat device which can control the expansion and contraction states of each air pipe without changing the connection of air cylinders and allows a user to use it in an optimal state.

Another important object of the present invention is to provide an air mat device in which the air switching cassette of the control means can be easily manufactured.

[Means for solving conventional problems] The air mat device includes a mat body, an air source that supplies pressurized air to the mat body, and a switching valve connected between the air source and the mat body. It is equipped with

The mat main body is made up of a plurality of air cylinders arranged in a row, and the air cylinders have the flexibility to expand when pressurized air is injected and contract when the air is exhausted.

The switching valve switches the connection state between the air source and the air cylinder at regular intervals, and the air cylinder expands and contracts to press and stimulate the body surface.

A control means is connected between the mat main body and the switching valve. The control means consists of a cassette and a case in which the cassette is mounted.

The input side of the cassette communicates with the switching valve, and the output side communicates with the mat body through a connecting hole.

Further, the cassette is composed of a column block and an outer cylinder attached to the outer periphery of the column block, and the column block has a plurality of vertical holes extending in the axial direction, and at least two of the vertical holes are bored. A branch hole is opened at the outer periphery of the pillar block and is bored from the outer periphery toward the center.

The outer peripheral opening of this branch hole is closed with an outer cylinder, and a connecting hole is formed by this vertical hole and the branch hole.

The case is formed so that the cassette can be replaced or the mounting position can be changed, and the input side and the output side of the cassette are communicated by replacing the cut or changing the mounting position of the cassette. As a result, the connection between the switching valve and the air cylinder is changed, and the expansion and contraction state of the air cylinder is changed.

[Operation] Pressurized air is supplied from the air source to the air cylinders 3, 3, . . . through the switching valve 2 and the control means 25. The switching valve 2 switches the connection state between the air source and each of the air cylinders 3, 3... at regular time intervals, and expands and contracts each of the air cylinders 3, 3... at regular time intervals.
The control means 25 changes the state of connection between the switching valve 2 and each air cylinder 3, 3..., and changes the expansion or contraction state of each air cylinder 3, 3.... For example, as shown in FIG. 24, the wavelength of expansion and contraction of the entire air cylinder is changed.

The control means 25 can easily change the connection state by simply changing the cassette 26. Cassette 26
A connection hole 33 is bored through which the input side communicates.

The connection hole 33 can be adjusted in the drilling state of the branch hole 43, as shown in FIG. That is, the branch hole 43
By changing the number of vertical holes 44 through which the connecting holes 33 are connected, various connected states of the connecting holes 33 can be realized.

For example, as shown in Fig. 26, if there are 12 vertical holes 44 on the input side connected to the switching valve and the branch hole communicates the four vertical holes 44 and divides the whole into 4 blocks, the mat main body Vertical hole 44 on the output side to be connected
becomes three.

[Preferred Embodiment] Hereinafter, an embodiment of this invention will be described based on the drawings.

The air mat device shown in FIG.
, an air source that supplies pressurized air to the mat body 1 , a switching valve 2 connected between the air source and the mat body 1 , and a connection between the output side of the switching valve 2 and the mat body 1 . and a control means 25 connected therebetween.

As shown in FIGS. 2 and 3, the mat main body 1 has a plurality of air cylinders 3 arranged in a grid pattern. The air cylinder 3 is made of a flexible and airtight material that expands when pressurized air is injected and contracts when the air is exhausted, such as fabric coated with a synthetic resin, or a flexible material. It is made of a synthetic resin sheet.

The air cylinder 3 has the flexibility to expand when air is pressurized, but it is preferably strong enough to hardly expand in this state. Although the internal volume expands when air is injected, the air cylinder 3, which does not expand, does not change in size depending on the air pressure that is injected, and is strong and durable in terms of strength.

The preferred size of the air cylinder 3 is determined to be an optimum value depending on the application. Usually, an air cylinder has an outer diameter of 2 to 10 cm in diameter when expanded, and a total length of about 30 to 15 cm.

As shown in FIGS. 3 to 5, the air cylinder 3 is bent so that when the air inside is exhausted, the upper end edge A is folded toward the adjacent air cylinder during expansion.

In the drawings, all the air cylinders 3 shown in FIGS. 3 and 5 are folded with the upper edge A of the air cylinders 3 tilted to the left when expanded.

In the air cylinder 3 in FIG. 6, the air cylinder 3 located on the right side of the center is folded by moving the upper edge A to the left.
The air cylinder 3 located on the left side of the center is folded with its upper edge moved to the right.

As shown in Fig. 7, the air mat device used by being placed under the human body has an air cylinder below the waist and an air cylinder above the waist, with the waist as the boundary.
As shown in Figure 6, if the upper edge is folded toward the boundary during contraction, the area above the waist of the human body can be pulled upwards and the area below the waist downwards during expansion, and the waist can be pulled and pressure stimulated. . A pneumatic mat device of this construction can be used for spinal traction.

As shown in Figures 3 to 5, in the case where the folds of the lower air cylinder 3 are fixed to the base sheet 4, the upper edge A moves the largest amount during inflation, and the upper edge A moves the largest amount on the body surface. The strongest lateral rubbing pressure stimulus is given. As shown in Figure 7, when used on a bed, the air cylinder 3 is sufficiently wider than the shoulder width, and its thickness is slightly thicker at the concave waist area, and slightly thicker at the shoulder blade. It is preferable that the portion be shaped thinly.

As shown in FIG. 9, the mat main body 1, which is used by being wrapped around an arm or, although not shown, wrapped around a leg as well as an arm, has each air cylinder 3 in a position where the arm is wrapped around the leg. As shown in FIG. 10, the empty cylinders 3 are arranged in a grid pattern so that the cylinders 3 are wound laterally around the arm.

As shown in FIG. 8, the lower side of the air cylinder 3 is bonded to the base sheet 4 over the required width, which shortens the lateral movement distance of the upper edge A during expansion.
Gently stimulates the body surface.

The mat main body having this structure is most suitable for use in air mat devices for sick patients, etc., where excessive side rubbing stimulation is undesirable.

As shown in FIG. 2, each air cylinder 3 is connected to the switching valve 2 via a hose 5 and a control means 25. As shown in FIG.

As the air source, an air pressurizing pump 6 with a discharge pressure of 50 to 300 mmHg, or a combination of a pressure reducing valve 7 and a pressurized air tank 8, as shown by the chain line, is used. When using the pressurized air tank 8, the high pressure air in the tank is reduced in pressure to 50 to 300 mmHg by the pressure reducing valve 7 and supplied to the air cylinder.

The air cylinder 3 can also be contracted simply by opening the air cylinder 3 to the outside air by communicating with the exhaust side via the switching valve 2. However, preferably, the air in the airtight bag is forcibly deflated by exhausting it with an exhaust pump. To achieve this, the exhaust pump 9 and the air source are connected to the switching valve 2.

As shown in FIGS. 2 and 11 to 13, the switching valve 2 consists of a valve body 10 and a drive motor 11 that drives the valve body 10.
A switching piece 12 rotated by a drive motor 11, and a casing 1 into which this switching piece 12 is rotatably inserted.
It consists of 3.

The switching piece 12 has a cylindrical overall shape,
Air press-in grooves 14 and exhaust grooves 15 are formed on the outer periphery. The press-fit groove 14 and the exhaust groove 15 are carved adjacent to each other in the direction of rotation so that when the switching piece 12 is rotated, the air ports 16 opened in the casing 13 are alternately communicated therewith. There is.

The valve body 10 shown in FIGS. 11 and 13 can change the expansion and contraction movements of the air cylinder 3 by moving in the axial direction with respect to the switching piece 12 of the casing 13. That is, several air cylinders 3 can be expanded into one group, or the number of air cylinders 3 to be expanded in one group can be changed.

FIG. 18 shows a developed view of the press-fit groove 14 and the exhaust groove 15.

In this figure, the press-fit groove 14 is formed so that its width becomes narrower in the axial direction, and the tip thereof is narrowly protruded. Adjacent to this press-fit groove 14, press-fit groove 1
An exhaust groove 15 having a width varying in the axial direction is formed spaced apart from the exhaust groove 4 by a certain distance S in the circumferential direction.

The press-fit groove 14 is always in communication with the air source, and the exhaust groove 1
The press-fit groove 14 and the exhaust groove 15 are each separately communicated with the introduction grooves 17 and 18 so that the exhaust groove 5 is always communicated with the exhaust pump 9. Introductory grooves 17, 18
are carved around the entire circumference of the switching piece 12 on both sides of the press-fit groove 14 and the exhaust groove 15.

The switching piece 12 has one end connected to the drive motor 11, and changes the rotation speed of the drive motor 11 to adjust the switching time.

The casing 13 is formed into a cylindrical shape into which the switching piece 12 is inserted airtightly and rotatably, and is open at the front end and open at the rear end so that the switching piece 12 can be freely moved in and out. On the outer periphery of the rear end of the casing 13, a first
As shown in FIGS. 3, 15, and 16, a movable cylinder 20 to which a drive motor 11 is fixed is inserted through the movable cylinder 20 so as to be freely drivable in the axial direction.

A key groove 19 is carved in the rear end portion of the outer periphery of the casing 13 in the axial direction.

A tip portion of a set screw 21 fixedly fixed to the movable cylinder 20 is slidably guided in the keyway 19 . By sliding the movable cylinder 20 with respect to the casing 13, the casing 13 and the switching piece 12 are moved relative to each other.

As shown in FIGS. 11 and 18, the air port 16 is arranged corresponding to the locus of movement of the press-fit groove 14 and exhaust groove 15 on the surface of the switching piece, and the press-fit port 22 is arranged in a manner that communicates with the press-fit groove 14. The exhaust port 23 is opened corresponding to the introduction groove 17 and communicates with the exhaust groove 15.
It is opened correspondingly.

When the switching piece 12 is moved relative to the casing 13, the location where the air port 16 passes through the press-fit groove 14 and the exhaust groove 15 changes, and each air port 16 passes through the press-fit groove 14 or the exhaust groove 15. The state communicated with changes.

As shown in FIG. 20a, when the switching piece 12 is moved to the right, the air port 1 is connected to the press-fit groove
6 is reduced, and the number of air cylinders in the expanded state is reduced.

When the switching piece 12 is moved to the farthest right, one air port 16 is communicated with the press-fit groove 14. On the contrary, as shown in FIG. 20c, the switching piece 1
2 is moved to the left, many air ports 16 are communicated with the press-fit grooves 14, and many air cylinders 3 are inflated. Moreover, when the switching piece 12 is located at the center as shown in FIG. 20b, half of the air ports 1
6 are communicated with the press-fit groove 14, and the remaining half of the air ports 16 are communicated with the exhaust groove 15, so that the number of air cylinders 3 in an expanded state and the number of air cylinders 3 in a contracted state are equal.

The switching piece 12 shown in FIG.
8 and the press-fit groove 14 and exhaust groove 15 have been removed.

The switching valves shown in FIGS. 15 and 16 are
0 is moved in the axial direction, and the moving cylinder 20 and the switching piece 12
Although the moving cylinder is fixed and the casing is moved in the axial direction with respect to the switching piece, the same operation is performed. In this case, although not shown, the casing may be attached to the base so as to be movable in the axial direction.

The pressure inlet 22 is connected to an air source via a hose, and the exhaust port 23 is connected to an exhaust pump 9 via a hose.

When the number of air ports 16 and the number of air cylinders 3 are equal, one air cylinder is connected to one air hole, but when the number of air cylinders is greater than the air holes, one air cylinder is connected to one air port 16. A plurality of air cylinders 3 are connected.

The control means 25 is interposed on the output side of the switching valve 2, that is, between the air hole 16 of the switching valve 2 and the hose 5. The control means 25, as shown in FIG. 11, consists of a cassette 26 and a case 27 in which the cassette 26 is housed.

By integrating the control means with the switching valve 2, as shown in FIGS. 22 and 23, both mechanisms can be simplified. However, although not shown, it is also possible to make the control means and the switching valve separate members and to connect the output side of the control means and the switching valve 2 with the hose 5.

As shown in FIG. 11, the case 27 includes a lid member 28 that is brought into airtight contact with the output end surface of the cassette 26.
and a fixed cylinder 29 fixed to the outer periphery of this lid member 28.
and a ring 30 that is fastened to the tip of the casing 13 on the fixed cylinder 29.

The lid member 28 has a disc shape, and has 12 output holes 31 axially penetrated near the outer periphery.
A pipe 32 for connecting the hose 5 is fixed to 1. The inner surface of the lid member 28 is brought into close contact with the surface of the cassette, and is communicated with the output side of the connection hole 33 penetrated through the cassette 26.

The fixed cylinder 29 has a flange 34 protruding from one end, and this flange 34 is attached to the casing 13 hooked on the ring 30, as shown in FIG.
Closely attached to the end face.

As shown in FIGS. 22 and 23, the ring 30 is provided with a female thread on the inside and a collar 35 that projects inward at one end.

A positioning pin 36 is projected from the inner surface of the fixed cylinder 29, and a groove 37 in which the positioning pin 36 is guided is cut on the outer periphery of the cassette 26 and extending in the axial direction. When the cassette 26 is stored with the positioning pin 36 guided in the groove 37,
The output hole 31 of the lid member 28 is connected to the connection hole 3 of the cassette 26.
3 and communicated with each other.

The cassette 26 includes a fixed cylinder 29 and a casing 13.
It is formed into a cylindrical shape with an outer diameter that can be removably housed inside, and has a connecting hole 33 opening therethrough in the axial direction.

Depending on the shape of the connecting hole 33 opened in the cassette 26, the expansion and contraction state of the air cylinder 3 can be adjusted.

FIG. 24 shows the communication state of the connection hole 33 opened in the cassette 26.

However, in this figure, the cassette 26 shown on the right side of column A in 3, which is made of stacked plates, is different from cassette 2.
This is for the purpose of clearly explaining the state of the connection hole 33 of No. 6, and does not relate to the cassette of this invention.

In columns A of FIGS. 1, 2, 4, and 5, the left side of the cassette 26 is the input side that communicates with the air hole of the switching valve, and the right side is the output side that communicates with the output hole of the lid member.

The cassette 26 shown in column 1A of FIG.
The connecting holes 33 extend in the axial direction and penetrate near the outer periphery at a constant pitch, and each connecting hole 33 is independent and does not intersect.

The expansion and contraction states of the air cylinder 3 when using the cassette 26 having this shape are shown in B, C, and D in Fig. 24.
column.

The relative positions of the switching piece 12 and the casing 13 in the states shown in columns B, C, and D of FIG. 24 are shown in column 3. In column 3, in column B, the switching piece 12 is unevenly distributed on the right and many of the air holes 16 are connected to the exhaust hole 23, and in column D, the switching piece 12 is unevenly distributed on the left and many of the air holes 16 are connected to the exhaust hole 23. It communicates with the press-fit hole 22, and C
In the field, the switching piece 12 is located in the center, and the air hole 16 is communicated with each half of the press-in hole 22 and the exhaust hole 23.

Press-fit hole 2 toward columns B, C, and D in Fig. 24 1.
The proportion of air holes 16 communicating with air cylinders 2 increases, thereby increasing the number of air cylinders 3 in an expanded state.
As the switching piece 12 rotates, the expanded or deflated air cylinder 3 moves from left to right as shown in each column.

Connection hole 3 of cassette 26 shown in column 2A of Fig. 24
3 are four holes a, b, c, opened on the input side.
d are each branched into three and communicated with 12 holes on the output side. A hole on the input side is 3, 7, 11 on the output side
, B holes are 2, 6, and 10, and C holes are 1, 5, and 9.
In addition, the d hole is communicated with the 4th, 8th, and 12th holes.

Expansion of the air cylinder when using this cassette,
In the contracted state, as shown in columns B, C, and D of Fig. 24, the whole cylinder is divided into three blocks, and every three cylinders expand and contract together, causing waves of three wavelengths to vibrate. .

In the connection holes 33 of the cassette 26 shown in column A of FIG. 24, three holes a, b, and c on the input side are each branched into four and communicated with 12 holes on the output side. The input side a hole is connected to the output side holes 2, 5, 8, and 11, the input side b hole is connected to the output side 3, 6, 9, and 12, and the input side c hole is connected to 1, 4, 7, and 10, respectively. ing.

When this cassette 26 is used, the expansion and contraction states of the air cylinders 3 are as shown in columns B, C, and D of FIG. Air cylinders expand together every other book,
The four wavelength waves are shrunk and moved from left to right.

Furthermore, cassette 2 shown in column 5 of FIG. 24A
The connection holes 33 of No. 6 are connected to the input side six holes a, b, c,
d, e, and f are each branched into two and communicated with 12 holes on the output side. Input side a hole connects to output side holes 1 and 7, input side B hole connects to output side holes 2 and 8, input side c hole connects to output side holes 3 and 9, input side d hole connects to output side holes 4 and 10. The input side e hole communicates with the output side holes 5 and 11, and the input side f hole communicates with the output side holes 6 and 12, respectively.

Using this cassette 26, when the switching piece 12 is rotated, the expansion and contraction states of the air cylinder 3 are changed to the second state.
4 As shown in columns B, C, and D of Figure 5, the overall 12
The air cylinders of a book are divided into two blocks, and every fifth cylinder expands and contracts together, causing waves of two wavelengths to move from left to right.

An exploded view of the cassette having the connecting hole shown in column A of FIG. 24 is shown in FIGS. 25 and 26.

However, the cassette 26 shown in FIG. 25 shows the state of the connection hole 33 for reference, and does not show an embodiment of this invention. This cassette 26 is made of plate materials laminated and bonded together without blocking the connection holes.

The cassette 26 shown in FIG.
It forms the connection hole 33 shown in column A2, and consists of six thick plates A, B, C, D, E, F, and 5
It consists of two thin plates P. The thick plate has 3 through holes on the outer periphery.
8 is perforated, and the branch window 3 is a branch path in the radial direction.
9 is penetrated.

The shape of the through hole 38 of the thick plate and the branch window 39 is 25th.
and FIG. 27. In this diagram,
Planks B, C, D, and E are formed with 120-angle radial branch windows 39, and each plank's radial branch windows 3
9 is provided at a position rotated by 30 degrees from left to right in the figure.

In FIG. 27, the connection hole communicating with the hole a on the input side passes through the thick plate A, and communicates with the holes 3□7□11 on the output side at the branch window 39 of the thick plate B. Similarly, hole b on the input side passes through thick plates A and B, is branched into three on thick plate C, and communicates with holes 2□ 6□ 10 on the output side, and hole c on the input side penetrates thick plate A. , B, C, and is branched into three at thick plate D, communicating with holes 1□ 5□ 9□ on the output side.
It passes through C and D and is branched into three parts by the thick plate E, which communicates with holes 4□ 8□ 12 on the output side.

In Fig. 25 1, a thin plate P sandwiched between thick plates
closes the opening of the branch window 39 without closing the through hole 38 of the thick plate.

25. FIGS. 2 and 3 show exploded perspective views of cassettes 26 with six or three holes on the input side, with the upper view showing the thick plate constituting the cassette 26 viewed from the right, and the lower view showing the thick plate viewed from the right. FIG.

The cassette shown in FIG. 252 is similar to that shown in FIG.
As shown in column A5, hole a on the input side passes through thick plate A, and is bifurcated into holes 1□ and 7□ on the output side at the branch groove 39' on the left side of thick plate B, and hole b on the input side It communicates with the output side hole on the right side of the thick plate A, passes through the thick plate B, and branches into two output side holes of the branch groove 39' on the right side of the thick plate B, and the input side hole c is It passes through thick plates A and B, and branches into two output holes 3□ and 9□ on the left side of thick plate C.
The hole d on the input side is the hole 4□ on the output side on the right side of the thick plate A.
10, and the hole e on the input side communicates with the hole 11 on the output side on the left side of the thick plate B, and communicates with the hole 5□ on the output side on the right side of the thick plate C by passing through the thick plates B and C. Furthermore, the hole f on the input side passes through the thick plate A and communicates with the hole 12 on the output side on the right side, and the hole f on the output side passes through the thick plates B and C and connects to the hole 6 on the output side in the left view of the thick plate D. It is connected to □.

Furthermore, in the cassette shown in FIG. 25, as shown in column A(4) of FIG. 5□ 8□
11, the input side hole b passes through thick plates A and B, and the output side hole 3□ 6□ 9□ is connected to the left side of thick plate C.
12, and the hole c on the input side is connected to the thick plate A,
Penetrate through B and C, and hole 1□ on the output side on the left side of thick plate D.
Connected to 4□ 7□ 10.

The cassette 26 shown in FIGS. 2 and 3 has a groove formed on one side of the thick plate, but as in the cassette shown at the bottom left of column A3 in FIG. A circumferential closure is also possible.

Figure 25 shows an example in which the number of holes on the input side is 3, 4, or 6 and the number of holes on the output side is 12. The communication state of the connection hole that communicates with the main body may be changed to a form not shown depending on the state of use.

As shown in FIG. 25, a cassette 26 in which connecting holes are formed by laminating and bonding plate materials has the advantage that it is easy to manufacture and can be mass-produced at low cost.

The cassette 26 shown in FIG. 26 consists of a cylinder 41, which is a pillar block, and a cylinder 42, which is an outer cylinder into which the cylinder 41 is inserted in a tight state. This cassette 26 has a vertical hole 44 extending in the axial direction, and the vertical hole 44 is communicated with the cassette 26 shown in FIG.
As shown in the 3 and 4 sectional views, a branch hole 43 is bored in the cylinder 41 in the radial direction, and the circumferential surface of the branch hole 43 is closed with a cylinder 42 to form a connecting hole in the cassette 26.

As shown in FIG. 28, the control member 25 has a pipe connected to a hose 5, and the hose 5 connected to the air cylinder 3. However, FIG. 28 shows the state in which the hose 5 is connected to the pipe of the control member,
The cassette shown here is not an embodiment of the invention.

[Effects] In the air mat device of the present invention, a control means is connected between the switching valve and the mat body, and the switching valve switches between expansion and contraction, and the control valve also switches between expansion and contraction. It is configured to switch between empty cylinders. For this reason, depending on the user's optimal state, the entire air mat is sometimes undulated with large wavelengths, and other times with small waveforms of 2 to 6 wavelengths to provide the most effective and comfortable pressure stimulation. It also has the feature that it can be easily switched.

Further, in the air mat device of the present invention, the replaceable cassette of the control means is composed of a column block and an outer cylinder attached to the outer periphery of the column block, and the column block extends in the axial direction and has a plurality of cassettes. A vertical hole is bored, and a branch hole is bored in the outer periphery of the column block communicating with at least two of the vertical holes, and a branch hole is bored from the outer periphery toward the center. is closed by the outer cylinder, and a connecting hole is formed between this vertical hole and the branch hole. Therefore, a vertical hole is bored in the column block in the axial direction, and the vertical hole is connected to the center from the outer periphery. Just by drilling a branch hole toward the front and closing the outer peripheral opening of the branch hole with an outer cylinder, a closed air connection hole is created inside, and the state of the vertical hole and branch hole can be changed. By simply changing the connection hole, the communication state of the connection hole can be freely adjusted, and cassettes with various connection holes can be easily and inexpensively mass-produced.

Incidentally, the connection holes connect a large number of air passages on the output side of the cassette to the input side in several blocks that communicate with each other, but the connection holes of each block are independent of each other and do not communicate with each other. Therefore,
It is extremely difficult to create three-dimensional connection holes in the cassette so that the connection holes of each block do not communicate with each other. The hose connections are complicated and large, and it is difficult to form them into a cassette, making it inconvenient to replace the cassette.

In contrast, the cassette of the present invention has a unique structure in which a vertical hole and a branch hole are bored in the column block, and the opening is closed around the outer periphery of the branch hole with an outer cylinder.
It is compact, inexpensive, and can be produced in large quantities.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing a conventional air mat device, Fig. 2 is a schematic plan view of an air mat device showing an embodiment of the present invention, and Figs. 7 and 9 are cross-sectional views and front views showing specific examples of usage conditions.
Fig. 0 is a plan view of the mat main body used in the state shown in Fig. 9, Fig. 11 is a sectional view of the switching valve, Figs. 12 and 13 are a perspective view and a partially sectional perspective view of the switching valve, Fig. 14 is a rear view of the switching valve, Figs. 15 and 16 are partially sectional perspective views showing a state in which the movable cylinder is moved, Fig. 17 is a perspective view showing a state in which the control member is disassembled, and Fig. 18 19 is a schematic plan view showing the connection between the switching valve and the mat main body, and FIG. 20 is a side view and a sectional view showing a state in which the relative position of the switching piece and the casing has been moved.
Fig. 21 is a sectional view of the casing of the switching valve and an exploded perspective view of the cassette, Figs. 22 and 23 are an exploded perspective view and an exploded sectional view of the control member, and Fig. 24 is a wiring diagram showing the connected state of the connection hole of the cassette. 25 and 26 are exploded perspective views of the cassette, and FIG. 27 is a connection hole connection diagram of the cassette shown in FIG. 25. FIG. 28 is a perspective view showing a state in which the switching valve and the mat main body are connected. 1...Matsu body, 2...Switching valve, 3...Air cylinder, 4...Base material sheet, 5...Hose, 6...Pressure pump, 7...Pressure reducing valve, 8...Air tank, 9
... Exhaust pump, 10 ... Valve body, 11 ... Drive motor, 12 ... Switching valve, 13 ... Casing,
14...Press-fit groove, 15...Exhaust groove, 16...Air port, 17...Introduction groove, 18...Introduction groove, 19...
Keyway, 20...Moving cylinder, 21...Set screw, 22
... Pressure inlet, 23 ... Exhaust port, 25 ... Control means, 26 ... Cassette, 27 ... Case, 28 ...
... Lid material, 29 ... Fixed cylinder, 30 ... Ring, 31
... Output hole, 32 ... Pipe, 33 ... Connection hole,
34... flange, 35... collar, 36... positioning pin, 37... groove, 38... through hole, 39... branch window, 39'... branch groove, 40... groove, 41...
Cylinder, 42... Cylinder, 43... Branch hole, 44...
Vertical hole.

Claims (1)

[Claims for Utility Model Registration] (1) A mat main body, an air source that supplies pressurized air to the mat main body, and a switching valve connected between the air source and the mat main body, The main body of the mat is made up of multiple air cylinders lined up.The air cylinders are flexible enough to expand when pressurized air is injected and contract when the air is exhausted, and the switching valve is fixed. In an air mat device configured to switch the connection state between an air source and an air cylinder every time, and to expand and contract the air cylinder to pressurize and stimulate the body surface, the connection between the mat main body and the switching valve is A control means is connected between them, and the control means consists of a cassette and a case in which the cassette is installed. Furthermore, the cassette consists of a column block and an outer cylinder attached to the outer periphery of the column block, and the column block extends in the axial direction and has a plurality of vertical holes bored therein. A branch hole is drilled from the outer periphery toward the center, communicating with at least two of the vertical holes and opening on the outer periphery of the column block, and the outer periphery opening of this branch hole is closed with an outer cylinder, This vertical hole and the branch hole form a connection hole, and the cassette is replaceably attached to the case, and by replacing the cassette, the input side and output side of the cassette are communicated. An air mat device characterized in that the connection state of the connection hole is changed, the connection between the switching valve and the air cylinder is changed, and the expansion and contraction states of the air cylinder are changed. (2) The pillar block of the cassette is cylindrical, the outer cylinder attached to the pillar block is cylindrical, and the cassette is removably installed in the case. Air mat device.