JPH061960U - Positioning device for rotary valve - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a position determination device for a rotary valve, which can accurately perform the position determination of a rotary valve body with a minimum necessary configuration. [Structure] Detected portions 71 to 78 on virtual meridians E1 to E8 of an encoder plate 70 which is interlocked with a rotary valve 60 have detected position information detecting positions of m, and a position information detecting means 80 is provided at each detected portion. Further, it has m position sensors (m1 to m4) capable of detecting the position information of a plurality of position information detection positions (bits b0 to b3), and the number m of position sensors is the circumferential direction of the rotating body. 2 for the number of positions n
^It satisfies ^m-1 ≤ n <2 ^m .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a position determination device for a rotary valve that detects a position determined by the rotation of a rotary valve body of the rotary valve, for example.

[0002]

[Prior art]

 An apparatus provided with this type of rotary valve is, for example, an automatic pressure exchange device for a human body support as disclosed in Japanese Patent Publication No. 46-26545. In this device, a plurality of tubes are arranged side by side on a bed, and a tubular fixed cock having a ventilation hole communicating with each tube is provided. A rotary cock provided with a ventilation hole for sequentially communicating with the supply source is provided. The fixed cock and rotary cock constitute a rotary valve.

Further, in this rotary valve, the rotation cock rotates so that the ventilation hole of the rotation cock and one of the ventilation holes of the fixed cock are sequentially and intermittently communicated with each other, and the fluid from the fluid supply source is supplied to each tube. Are sequentially supplied and discharged.

[0004]

[Problems to be solved by the device]

 By the way, in such a configuration, it is desirable that the positioning of the vent hole of the rotary cock (rotary valve body) and each vent hole of the fixed cock can be accurately performed with the minimum necessary configuration.

Therefore, the present invention meets this demand, and an object of the present invention is to provide a position determination device for a rotary valve, which can accurately perform the position determination of a rotary valve body with a minimum necessary configuration. To do.

[0006]

[Means for Solving the Problems]

In order to achieve this object, the present invention provides a rotating body provided with a plurality of detected portions at intervals in a circumferential direction and interlocked with a rotary valve body of a rotary valve, and the rotating body according to the rotation of the rotating body. In a rotary valve positioning position detection device having a detection means arranged so as to be able to detect a detected part and adjacent to the rotating body, each detected part has m detected position information detection positions, and The detection means has m position sensors capable of detecting the position information of a plurality of position information detection positions provided in each of the detection sites, and the number m of the position sensors is the number of the position sensors of the rotating body. It is characterized in that the position determining device of the rotary valve satisfies 2 ^m-1 ≤n <2 ^m with respect to the number n of positions in the circumferential direction.

[0007]

[Action]

 With such a configuration, when the detected portion of the rotating body faces the plurality of position sensors as the rotary valve body rotates, each position sensor detects the presence or absence of a plurality of detected position information positions of the detected portion. And outputs a detection output signal. The position of the rotary valve disc can be determined by combining the detection signals from the plurality of position sensors.

[0008]

【Example】

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

In FIGS. 1 and 2, reference numeral 10 denotes a mat body divided into three parts: a shoulder receiving portion 11 for receiving a shoulder or the like, a waist receiving portion 12 for receiving a waist or the like, and a foot receiving portion 13 for receiving a foot or the like.

Each of the receiving portions 11 to 13 has a mat base portion 14 to 16 made of a hard synthetic resin, and an upper layer portion 17 to 19 made of a soft synthetic resin attached so as to cover the mat base portion 14 to 16. And have. Reference numeral 20 denotes a skin made of cloth, for example, and the mat body 10 can be used as a futon so that it can be folded in three.

The upper surfaces of the mat bases 14 to 16 are formed in a wave shape, and a plurality of gaps 21 to 23 are formed between the upper surfaces of the mat bases 14 to 16 and the lower surfaces of the upper layers 17 to 19. Three strip-shaped air bags 31-33 are provided between the mat base portion 14 and the upper layer portion 17, and four strip-shaped air bags 34-37 are provided between the mat base portion 15 and the upper layer portion 18. One strip-shaped foot air bag 38 is arranged between the mat base portion 16 and the upper layer portion 19, respectively.

When the air bags 31 to 38 are expanded by being supplied with air by a supply / exhaust device which will be described later, the lower portions of the air bags 31 to 38 are fixed in the gaps 21 to 23. The upper portions of the air bags 31 to 38 project the upper layers 17 to 19 upward, thereby performing massage.

As shown in FIG. 3, rectangular plate members 38a, 38b made of hard synthetic resin are attached to the upper surface of the air bag 38 along the longitudinal direction of the air bag 38. When the air bladder 38 is inflated, as shown in FIG. 4, the upper portion is formed into a pointed pressing portion 38c.

Further, an electric floor belt 25 is provided on the upper surface of the mat base portion 16 of the foot receiving portion 13, and a heater 26 is provided between the upper layer portion 19 and the outer skin 20.

In FIG. 1, reference numeral 40 denotes a supply / discharge device that supplies air to the air bags 31 to 38 and exhausts air in the air bags 31 to 38. The feeding / discharging device 40 also controls the electric belt 25 and the heater 26.

An operation panel 41 is provided on the upper surface of the main body case 40 a of the feeding / discharging device 40. The operation panel 41 has a power switch 42, a heater switch 43, and a heater switch 43 as shown in FIG. A temperature adjustment dial 44 for adjusting the temperature of the heater, a wave switch 45 in which the air bags 31 to 38 successively expand and contract, and a potential of minus several hundreds of volts are applied to the electric belt 25 to perform potential treatment. An ion switch 46, a wave ion switch 47 for performing ion treatment after waving, and a wave selection switch 48 are provided. Reference numerals 43a and 45a to 47a are light emitting diodes which are turned on when the switches 43 and 45 to 47 are pressed.

Each time the wave selection switch 48 is pressed, the mode is switched from A mode to L mode in sequence. When the A mode is selected, the air bags 38 to 31 are sequentially inflated from the foot to the neck. It will be contracted. When the B mode is selected, the air bags 31 to 38 are sequentially inflated and deflated from the neck to the feet. When the C mode is selected, only the air bags 31 to 33 that press the shoulder portion are inflated and deflated in sequence. When the D mode is selected, the air bags 34 to 37 that press the back and waist are inflated and contracted in sequence. When the E to L modes are selected, only the air bags 31 to 38 that press the respective local parts of the respective modes are inflated and deflated. Reference numerals 48a to 48l are light emitting diodes which are turned on when the respective modes are selected.

Reference numerals 49 and 50 denote setting switches for setting the intensity of massage. As the setting switch 49 is pushed, the strength increases and as the setting switch 50 is pushed, the strength decreases. 50a to 50d are light emitting diodes showing the set intensity. Reference numeral 52 is a storage unit for storing the remote control main body 51 (see FIG. 6).

As shown in FIG. 6, the remote controller main body 51 is provided with a switch having the same function as the switch provided on the operation panel 41 in the remote controller operation section 52, and the switches have exactly the same functions as described above. You can perform various operations.

Further, the supply / discharge device 40 incorporates the rotary valve 60 shown in FIG. The rotary valve 60 has a rotatable rotor, that is, a rotating body 61 (rotating valve body), and fixed bodies 62 and 63 (valve body) that rotatably sandwich the rotating body 61.

The fixed body 62 is attached to a frame plate 64a of a frame 64 provided in the main body case 40a, and a through hole extending in the vertical direction (in FIG. 7) is formed at the center of the fixed body 62. 62a is formed. The through hole 62a is connected to a filter tank (described later) that stores compressed air.

As shown in FIG. 7, the rotating body 61 has a central hole portion 61a extending in the axial direction, a peripheral communicating hole portion 61b, and a central hole portion 61c between the central hole portion 61a and the communicating hole portion 61b. An air supply hole (air supply passage) A is formed. The central hole portion 61a faces the through hole 62a and communicates with a communicating hole portion 61b provided on the peripheral end side of the upper surface of the rotating body 61 by a hole portion 61c. A gear 61d is formed on the peripheral surface of the rotating body 61, and the gear 61d meshes with a gear 67 provided on the drive shaft 66 of the stepping motor 65. As a result, the rotating body 61 is rotated about the central axis 61e by the stepping motor 65, and regardless of the rotation of the rotating body 61, the central hole portion 61a of the rotating body 61 and the through hole 62a of the fixed body 62 are always in communication with each other. It is supposed to keep.

As shown in FIG. 8, a C-shaped arc groove 61f formed along the outer periphery is provided as an exhaust passage on the upper surface of the rotating body 61, and communicates with both ends of the arc groove 61f. The hole 61b is sandwiched. Further, a straight groove 61g extending from the center of the arc groove 61f to the center of the rotor 61 is provided.

The fixed body 63 is fixed to a frame plate 64b (see FIG. 7) of the frame 64, and as shown in FIG. 9, a through hole 63a is provided in the center as an exhaust passage, and the through hole 63a is formed. Eight through holes 63b to 63i are provided as air guide passages at equal intervals around the circumference of. 63j is a filter provided in the through hole 63a.

The opening on the lower side (in FIG. 7) of the through hole 63a always faces and is in communication with the linear groove 61g of the rotating body 61, and one of the lower openings of the through holes 63b to 63i is It is adapted to face the communication hole 61b of the rotating body 61 and communicate therewith. At this time, the openings of the other through holes face and communicate with the circular arc groove 61f of the rotating body 61. For example, when the lower opening of the through hole 63b is opposed to and communicates with the communication hole portion 61b of the rotating body 61, the lower opening of the through holes 63c to 63i is opposed to and communicates with the arc groove 61f. .

The other end of the through hole 63a is opened to the outside air, and the upper openings of the through holes 63b to 63i communicate with the air bags 31 to 38 arranged on the mat body 10 by the hoses 68a to 68h (see FIG. 1). Therefore, the compressed air stored in the filter tank 92 can be supplied to the arbitrary air bags 31 to 38 by the rotation of the rotating body 61. For example, when the communication hole portion 61b of the rotating body 61 is in communication with the through hole 63b of the fixed body 63, compressed air is supplied only to the air bag 31 and the air bag 34 expands.

At this time, since the through holes 63c to 63i communicate with the outside air via the circular arc groove 61f of the rotating body 61 and the through hole 63a of the fixed body 63, the other air bags 32 to 38 are in an exhausted state.

When the communication hole portion 61 b of the rotating body 61 is positioned between the through holes 63 b to 63 i of the fixed body 63, all the through holes 63 b to 63 i are communicated with the circular arc groove 61 f of the rotating body 61, and The bags 31 to 38 are all configured to be in an exhausted state.

The fixed body 62 is constantly biased upward (in FIG. 7) by a spring, and this biasing maintains the airtightness of the joint surface between the rotating body 61 and the fixed bodies 62, 63. It is set so that compressed air does not leak from the joint surface.

Further, in FIG. 7, an encoder (rotational position detecting means) ED including an encoder plate 70 and a position detecting means 80 is provided on the outer periphery of the rotary valve 60. The encoder plate 70 is attached to the rotating body 61 and rotates integrally with the rotating body 61.

As shown in FIG. 8, the encoder plate 70 is provided with positioning positions at intervals of 45 degrees, that is, detected parts 71 to 78. Assuming eight virtual radial lines E1 to E8 set at intervals of 45 degrees and extending in the radial direction, the detected parts 71 to 78 are provided on the virtual radial lines E1 to E8. A communication hole 61b is located on the virtual meridian E1.

In addition, the position detecting means 80 is provided in the frame 64 and detects holes 71d to 78d (positioned information), which will be described later, of the detected parts 71 to 78 provided on the encoder plate 70, and detects 4 bits. It has a plurality of m position sensors each including a set of a light emitting diode and a light receiving diode. The number m of the position sensors is equal to the number of detected positions of the detected position information of each of the detected parts 71 to 78.

Here, when the number of position determination positions of the encoder plate 70, that is, the number of detected parts is n, the number m of position sensors is the number n of position determinations in the circumferential direction of the encoder plate 70 (rotating body) n. Is set to a value satisfying 2 ^m-1 ≤n <2 ^m .

In the present embodiment, the number n of positioning positions (detected parts) is eight from 71 to 78. Therefore, when m that satisfies 2m−1 ≦ 8 <2m is obtained, m = 4. .

Therefore, in the present embodiment, four position sensors m1 to m4 are provided, and the number of positions of the detected position information of each of the detected parts 71 to 78 is four positions of bits b0, b1, b2, b3. Is provided. The positions from the bit b0 to the bit b3 are arranged on the virtual meridians E1 to E8 from the inner peripheral side to the outer peripheral side of the encoder plate 70.

The detected part 71 has a hole 71d provided at the position of bit b3 of the virtual meridian E1 as position information, and the detected part 72 is a hole provided at the positions of bits b1 and b3 of the virtual meridian E2. 72a and 72d as the position information, the detected part 73 has holes 73b and 73d provided at the positions of the bits b1 and b3 of the virtual meridian E3 as the position information, and the detected part 74 is the virtual meridian. It has holes 74a, 74b, 74d provided at the positions of bits b0, b1, b3 of E4 as the position information. Moreover, the detected part 75 has holes 75c, 75d provided at the positions of the bits b2, b3 of the virtual meridian E5 as the position information, and the detected part 76 has the positions of the bits b0, b2, b3 of the virtual meridian E6. The holes 76a, 76c, 76d provided are used as the position information, and the detected portion 77 has holes 77b, 77c, 77d as the position information which are provided at the positions of the bits b1, b2, b3 of the virtual meridian E7. The detection portion 78 has holes 78a, 78b, 78c, 78d provided at the positions of the bits b0, b1, b2, b3 of the virtual meridian E8 as the position-received information.

The position sensor m1 includes a light emitting diode 81a provided at a position facing each bit b0 position set on the encoder plate 70 and a light emitted by the light emitting diode 81a to the encoder plate 70. It is composed of a light receiving diode 82a which receives light through the holes 72a 74a, 76a, 78a provided. The position sensor m2 includes a light emitting diode 81b provided at a position facing each bit b1 position set on the encoder plate 70, and holes 73b, 74b, 77b provided on the encoder plate 70 for emitting light emitted by the light emitting diode 81b. , 78b for receiving light via the light receiving diode 82b. The position sensor m3 includes a light emitting diode 81c provided at a position facing each bit b2 position set on the encoder plate 70, and holes 75c and 76c provided on the encoder plate 70 for emitting light emitted from the light emitting diode 81c. , 77c, 78c and a light receiving diode 82c for receiving light. The position sensor m4 includes a light emitting diode 81d provided at a position facing each bit b3 position set on the encoder plate 70, and holes 71d ... 78d provided on the encoder plate 70 for emitting light emitted by the light emitting diode 81d. And a light receiving diode 82d for receiving light via the.

The light receiving / non-light receiving states of the light receiving diodes 82 a to 82 d differ depending on the rotational position of the rotating body 61. For example, when the communication hole portion 61b of the rotating body 61 and the through hole 63b of the fixed body 63 communicate with each other and compressed air is supplied to the air bag 31, only the light receiving diode 82d receives the light and the virtual meridian The hole 71d on E1 is detected.

The truth table of FIG. 10 shows the relationship between the light receiving / non-receiving of the light receiving diodes 82a to 82d and the virtual meridians E1 to E8. In this truth table, bits b0 to b3 correspond to the light receiving diodes 82a to 82d, "1" indicates that light is received, and "0" indicates that no light is received. Further, E1 to E8 correspond to the through holes 63b to 63i. That is, E1 to E8 correspond to the air bags 31 to 38.

For example, when only the light receiving diodes 82a and 82d are receiving light, the position detecting means 80 outputs a 4-bit signal "1001" to detect the holes 72a and 72d of E2. Show. At this time, the communication hole portion 61b of the rotating body 61 communicates with the through hole 63c, and compressed air is supplied to the air bag 32.

Similarly, when the position detecting means 80 outputs detection signals E3 to E8 in FIG. 10, the communication hole portion 61b of the rotating body 61 communicates with the through holes 63d to 63i of the fixed body 63, and the air is discharged. It shows that compressed air is supplied to the bags 33 to 38.

FIG. 11 is a block diagram schematically showing the overall configuration of the air matting device. In FIG. 11, 91 is an air compressor that generates compressed air, and 92 is a filter that purifies and stores the compressed air. Tanks 93 are needle valves for opening the filter tank 92, and the air compressor 91, the filter tank 92, the needle valve 93, etc. are provided in the main body case 40a. Reference numeral 100 denotes a control circuit (control means) that controls the stepping motor 65 and the heater 26, the electric belt 25, and the like provided on the mat body 10 based on the operation of each switch provided on the operation panel 41.

As shown in FIG. 12, the control circuit 100 is composed of a microcomputer 101, interfaces 102 to 105, etc., and this control circuit 100 is also provided in the main body case 40a.

Next, the operation of the air matting device configured as described above will be described based on the flow charts shown in FIGS. 13 and 14.

Step 1 First, the power switch 42 provided on the operation panel 41 of the feeding / discharging device 40 is turned on. As a result, the compressor 91 operates and compressed air is stored in the filter tank 92. Then, in step 1, it is determined whether or not the wave switch 45 or the wave ion switch 47 is pressed. If the result is yes, the process proceeds to step 2, and if the result is no, the process proceeds to step 20 and the heater / electric power of steps 20-22 is selected. It controls the operation of the floor zone mode.

Step 2 In Step 2, it is judged whether or not the entire repeat mode, that is, the A mode to the D mode has been selected by the wave selection switch 48, and if YES, the entire repeat of Steps 10 to 16 is performed. If the result is NO, the procedure goes to the local massage mode of E to L in step 3.

If any one of the local massage modes E to L is selected, it is determined as NO in Step 2, and the inflation / deflation control of the specific air bag in Steps 3 to 8 is performed. It The following steps 3 to 8 will be described, for example, when the L mode is selected and the inflation / deflation of the air bag 38 corresponding to the foot is repeatedly controlled.

(Steps 3 to 8; Local Massage Mode) Step 3 In Step 3, the stepping motor 65 is drive-controlled to rotate the rotating body 61 of the rotary valve 60, and the process proceeds to Step 4.

Step 4 In step 4, it is determined whether or not the rotating body 61 has rotated to the target position. That is, it is determined whether or not the communication hole portion 61b of the rotating body 61 communicates with the through hole 63i of the fixed body 63. This is determined by whether or not the position detecting means 80 detects the holes 78a to 78d of the virtual meridian E8 and outputs the 4-bit signal "1111". If it is determined NO in step 4, the process returns to step 3, and the driving of the stepping motor 65 is continued to rotate the rotating body 31 further.

When the communication hole portion 61b of the rotating body 61 communicates with the through hole 63i of the fixed body 63, the position detecting means 80 detects the holes 78a to 78d of the virtual meridian E8 and outputs a signal of "1111". In step 4, it is judged as yes and the process proceeds to step 5.

Step 5 In Step 5, the driving of the stepping motor 65 is stopped, compressed air is supplied to the air bag 38, and the air bag 38 expands.

When the air bag 38 is inflated, as shown in FIG. 4, the plate members 38a and 38b serve as a pressing portion 38c having a pointed upper portion, and the pressing portion 38c presses a calf or the like which is a foot portion. Becomes Since the pressing portion 38c has a pointed shape, the force per unit area for pressing the calf is large, and the foot can be massaged sufficiently.

The stop time of the stepping motor 65 is determined by the setting of the setting switches 49, 50 for setting the strength. When the strength is set to be strong, the stop time is lengthened and the strength is set to be weak. And the stop time will be shorter. When the stepping motor 65 is stopped for the determined predetermined time, the process proceeds to step 6.

Step 6 In Step 6, a predetermined number of motor driving pulses are output from the control circuit 100 to rotate the stepping motor 65 by a predetermined angle, and the process proceeds to Step 7.

By this drive, the rotary body 61 of the rotary valve 60 is rotated by a predetermined angle, and the communication hole portion 61b of the rotary body 61 is positioned between the through holes 63i and 63b of the fixed body 63. As a result, all the through holes 63b to 63i of the fixed body 63 are communicated with the circular arc groove 61f of the rotating body 61, all the air bags 31 to 38 are in an exhausted state, and the inflated foot air bag 38 is contracted. . On the other hand, the communication hole portion 61b of the air supply hole A disconnects the communication between the through holes 63i and 63b of the fixed body 63.

Step 7 However, in Step 7, since the needle valve 93 is opened and the compressed air in the filter tank 92 is released, the pressure in the filter tank 92 does not become too high. After this, the needle valve 93 is closed, and the process proceeds to step 8.

Step 8 In step 8, it is determined whether or not to end. This is for determining whether or not a set time set by a timer (not shown) has been reached, or whether a stop switch (not shown) has been pressed. If NO, the process returns to step 3 and the operations of steps 3 to 8 are repeated until YES is determined in step 8.

By repeating the operations of steps 3 to 8, the air bag 38 for the foot is repeatedly inflated and deflated. Then, if YES is determined in step 8, the process ends.

(Steps 10 to 16; Whole Repeat Mode, etc.) Steps 10, 11 and 12 When it is judged as YES in Step 2 and proceeds to Step 10, in Step 10, the stepping motor 65 is driven to rotate the rotary valve 60. The rotating body 61 rotates. In step 11, it is determined whether the rotating body 61 has rotated to the target position.

Here, for example, when the B mode is selected, it is determined whether or not the position detecting means 80 has detected the hole 71d of the virtual meridian E1. That is, it is determined whether or not the communication hole portion 61b of the rotary body 61 communicates with the through hole 63b of the fixed body 63. If no, the process returns to step 10, the stepping motor 65 is driven, and the rotary body 61 of the rotary valve 60 is driven. Is rotated further. When the communication hole portion 61b of the rotating body 61 communicates with the through hole 63b, the position detecting means 80 outputs a 4-bit detection signal indicated by the truth value E1. Then, the driving of the stepping motor 65 is stopped.

Steps 13 and 14 Due to this stop, compressed air is supplied to the air bag 31, and the air bag 31 expands. The other air bags 32 to 38 are in an exhausted state. This stop time is determined in the same way as above. When stopped for the determined predetermined time, the stepping motor 65 is driven (step 13), and in step 14, it is determined whether or not the rotating body 61 has rotated to the next target position.

Since the B mode is set here, it is determined whether or not the communication hole portion 61 b of the rotating body 61 communicates with the through hole 63 c of the fixed body 63. That is, it is determined whether or not the position detecting means 80 has detected the holes 72a and 72d of the virtual meridian E2. If NO, the process returns to step 13, the stepping motor 65 is driven, and the rotary body 61 of the rotary valve 60 is further rotated.

Then, when the communication hole portion 61b of the rotating body 61 communicates with the through hole 63c, the position detection means 80 outputs a 4-bit detection signal indicated by E2 in the truth table. Then, the process proceeds to step 15.

Step 15 In step 15, the driving of the stepping motor 65 is stopped. Due to this stop, the air bag 32 is inflated. On the other hand, the inflated air bladder 31 is in an exhausted state and thus contracts.

Step 16 In Step 16, it is judged whether or not the processing is to be ended. If No, the procedure returns to Step 13, and the operations of Steps 13 to 16 are repeated until it is judged Yes in Step 16. Based on this determination, the air bags 31 to 38 are inflated and deflated in sequence.

As a result, the massage is repeatedly performed from the neck to the legs. Then, when the time set by the stop switch (not shown) or the timer (not shown) is reached, YES is determined in step 16 and the process ends.

In the present embodiment, a control example has been described in which the air bags 31 to 38 are sequentially inflated and deflated to sequentially massage the neck to the legs, but the present invention is not necessarily limited to this. For example, the order in which the air bags 31 to 38 are inflated and deflated may be set at random to massage the neck to the feet randomly.

(Steps 20, 21, 22; Heater / Electronic Floor Band Mode) Steps 20, 21, 22 If it is judged No in Step 1 and Step 20 is reached, in Step 20, the heater switch 43 or the ion switch 46 is turned on. It is judged whether or not it has been pressed, and if the result is NO, the process returns to step 1 and the operations of steps 1 and 20 are repeated until the switches 45, 47, 43 and 46 are pressed. If YES is determined in step 20, the process proceeds to step 21, and the heater 26 and the electric belt 25 are controlled. In step 22, it is determined in the same manner as described above whether or not to end, and if it is determined no, the process returns to step 21, and the operations of steps 21 and 22 are repeated. When it is judged as yes, it ends.

In the above embodiment, the air bags 31 to 33, 34 to 37 are arranged so as to overlap each other when contracted, but it goes without saying that they may be arranged not to overlap.

FIG. 15 shows another embodiment of the foot air bag 110, in which a bar material 111 made of a hard synthetic resin is mounted on the air bag 110, and the bar material 111 is attached to the air bag 110. The upper portion is formed as a pointed pressing portion 112.

In each of the foot air bags 38 shown in FIGS. 4 and 15, the pressing portion is linearly pointed, but it is needless to say that it may be pointed.

[Other Example] In the above embodiment, when the communication hole portion 61b of the rotating body 61 is located between the through holes 63b to 63i of the fixed body 63, the control circuit 100 outputs a predetermined number of pulses. However, as shown in FIG. 16, the hole 113 is provided at the intermediate position between the virtual meridians E1 to E8 of the encoder plate 70 at the position corresponding to the bit b0, so that the intermediate position of the bits b0 to b3 can be obtained. Alternatively, the detection may be performed by detecting the hole 113 of FIG. In this case, as shown in FIG. 18, whether or not there is an output signal from the light receiving diode 82a at the bit b0 position at each intermediate position of E1 to E8, that is, whether or not there is a detection signal "0001". To be detected.

128d at the position of the bit b3 provided in the encoder plate 70 shown in FIG. 16 is formed to have a small diameter, and the holes 122a to 128d of the bits b0 to b2 are made large in diameter, and further shown in FIG. As described above, the angle θ1 that sandwiches the diameter of the hole as viewed from the center position O of the rotating body 61 is made smaller than the angle θ2 that sandwiches the holes 122a to 128d. By detecting the position of the rotating body 61 by the hole of the bit b3, the communicating hole portion 61b of the rotating body 61 and the through holes 63b to 63i can be accurately matched. Further, if the position information is detected by the bits b0 to b2, the light receiving amount of the light receiving diodes 82a to 82d becomes large due to the large diameter of the holes 122a to 128d, and as a result, the accurate position information can be detected. Becomes

Next, a control example using this configuration will be described with reference to the flowchart shown in FIG.

In the above embodiment, it is determined in step 2 whether the whole repeat mode, that is, the A mode to the D mode is selected by the wave selection switch 48, and if yes, the whole repeat control of steps 10 to 16 is performed. . If NO, the process proceeds to the local massage modes E to L in step 3, but step 2 in the above-described embodiment may be shifted to step 30 in this embodiment. .

Then, when any one of the local massage modes E to L is selected, it is determined as NO in step 2, and the inflation / deflation control of the specific air bag of steps 30 to 37 is performed. . In the following steps 30 to 37, similar to steps 3 to 8 in the above embodiment, for example, when the L mode is selected, the inflation / deflation of the air bag 38 corresponding to the foot is repeatedly controlled. The case will be described.

Step 30 In step 30, the stepping motor 65 is driven and the rotary body 61 of the rotary valve 60 rotates.

Step 31 In step 31, it is determined whether or not the rotating body 61 has rotated to the target position. That is, it is determined whether or not the communication hole portion 61b of the rotating body 61 communicates with the through hole 63i of the fixed body 63. This is determined by whether or not the position detecting means 80 detects the holes 78a to 78d of the virtual meridian E8 and outputs the 4-bit signal "1111". When it is determined NO in step 31, the process returns to step 30, and the driving of the stepping motor 65 is continued to rotate the rotating body 31 further.

When the communication hole portion 61b of the rotating body 61 communicates with the through hole 63i of the fixed body 63, the position detecting means 80 detects the holes 78a to 78d of the virtual meridian E8 and outputs a signal of "1111". In step 31, it is judged as yes and the process proceeds to step 32.

Step 32 In step 32, the driving of the stepping motor 65 is stopped, compressed air is supplied to the air bag 38, and the air bag 38 is inflated.

When the air bladder 38 is inflated, as shown in FIG. 4, the plate members 38a and 38b serve as a pressing portion 38c having a pointed upper portion, and the pressing portion 38c presses a calf or the like which is a foot portion. Becomes Since the pressing portion 38c has a pointed shape, the force per unit area for pressing the calf is large, and the foot can be massaged sufficiently.

The stop time of the stepping motor 65 is determined by the setting of the setting switches 49 and 50 for setting the strength, and when the strength is set to be strong, the stop time becomes long and the strength is set to be weak. And the stop time will be shorter. When the stepping motor 65 is stopped for the determined predetermined time, the process proceeds to step 33.

Step 33 In step 33, the needle valve 93 is opened to release the compressed air in the filter tank 92, then the needle valve 93 is closed, and the routine proceeds to step 34.

Step 34 In step 34, the control circuit 100 outputs a pulse for driving the motor by one pulse, and the stepping motor 65 is rotationally driven by one step, and the process proceeds to step 35.

Step 35 In Step 35, it is determined whether or not the communication hole 61b is located at an intermediate position between the through holes 63i and 63b of the fixed body 63, as the rotary body 61 is rotated in Step 34. . That is, the light emitting diode 81a and the light receiving diode 82a face the hole 113 at the intermediate position between E8 and E1, the light from the light emitting diode 81a is detected by the light receiving diode 82a, and the detection bit at this position is "0001". It is determined whether or not.

In this judgment, if the communication hole 61b is not located at the intermediate position between the through holes 63i and 63b of the fixed body 63, the detection bit becomes "0000", and therefore the process returns to step 34 and loops. . If the communication hole 61b is located at the intermediate position between the through holes 63i and 63b of the fixed body 63 in this determination, the detection bit becomes "0001". In this case, the stepping motor 65 is stopped and step 36 Move to.

At this stop position, the communication hole 61b is located at the intermediate position between the through holes 63i and 63b of the fixed body 63, and all the through holes 63b to 63i of the fixed body 63 are circular arc grooves of the rotary body 61. All the air bags 31 to 38 are communicated with 61f, and all the air bags 31 to 38 are in an exhausted state, and the inflated foot air bag 38 contracts. On the other hand, the communication hole portion 61b of the air supply hole A disconnects the communication between the through holes 63i and 63b of the fixed body 63.

Step 36 In this step, the stepping motor 65 is stopped for the set time, and when the set time has passed, the process proceeds to step 37.

Step 37 In step 37, it is determined whether or not to end. This determines whether or not the set time set by a timer (not shown) has been reached, or whether a stop switch (not shown) has been pressed. If NO, the process returns to step 30 and the operations of steps 30 to 37 are repeated until YES is determined in step 37.

By repeating the operations of steps 30 to 37, the foot air bag 38 repeatedly expands and contracts. Then, if YES in step 37, the process ends.

[0091]

【effect】

As described above, according to the present invention, each detected part has m detected position information detection positions, and the detection means outputs the detected position information of a plurality of detected position information positions provided in each detected part. A structure having m detectable position sensors, and the number m of the position sensors satisfies 2 ^m-1 ≤n <2 ^m with respect to the number n of positionings of the rotating body in the circumferential direction. Therefore, the position of the rotary valve body can be accurately determined with the minimum necessary configuration.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an entire air mat device according to the present invention,

FIG. 2 is a cross-sectional view showing the structure of the mat body,

FIG. 3 is a cross-sectional perspective view showing the configuration of a foot air bag,

FIG. 4 is a perspective view showing a state when the air bag for a foot is inflated,

FIG. 5 is a plan view showing an arrangement of switches provided on the operation panel,

FIG. 6 is a plan view showing a remote control body,

FIG. 7 is a cross-sectional view showing the configuration of a rotary valve,

FIG. 8 is a plan view showing an encoder plate and a rotating body,

FIG. 9 is a plan view showing an arrangement relationship of through holes provided in the rotating body,

FIG. 10 is an explanatory diagram showing a truth value showing the relationship between the positional relationship of the rotating body and the signal output from the encoder.

FIG. 11 is a block diagram schematically showing the configuration of an air mat device.

FIG. 12 is a block diagram showing the configuration of a control circuit for controlling the stepping motor,

FIG. 13 is a flowchart showing the operation of the control circuit,

FIG. 14 is a flowchart showing the operation of the control circuit.

FIG. 15 is a perspective view showing another embodiment of the air bag for feet,

FIG. 16 is a plan view showing another embodiment of the encoder plate,

FIG. 17 is an explanatory view showing the size of holes.

FIG. 18 is an explanatory diagram showing a truth value showing the relationship between the positional relationship of the rotating body and the signal output by the encoder.

FIG. 19 is a flowchart showing the operation of the control circuit.

[Explanation of symbols]

 60 ... Rotary valve 61 ... Rotating body (rotating valve body) 61f ... Arc groove (exhaust passage) 63b to 63i ... Through hole (air guide passage) 70 ... Encoder plate (rotating body) 71 to 78 ... Detected site 80 ... Position Information detecting means A ... Air supply passage m1-m4 ... Position sensor b0-b3 ... Position (positioned information detection position) E1-E8 ... Virtual meridian

Claims (1)

[Scope of utility model registration request] 1. A rotating body provided with a plurality of detected parts at intervals in a circumferential direction and interlocked with a rotary valve body of a rotary valve, and the detected part can be detected as the rotating body rotates. And a detecting means disposed adjacent to the rotating body in a rotary valve positioning position detecting device, wherein each detected portion has m detected position information detection positions, and the detecting means includes It has m position sensors capable of detecting the position information of a plurality of position information detection positions provided on the detection site, and the number m of the position sensors is the number of position determinations in the circumferential direction of the rotating body. A rotary valve positioning position detecting device characterized by satisfying 2 ^{m -1} ≤ n <2 ^m for n.