JPH029825B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a pine surgery machine, and particularly to a pine surgery machine equipped with a treatment element on the back support of a chair, bed, or the like.

[Background technology]

For example, in the case of a conventional pine-surge machine equipped with a treatment element on the backrest of a chair or bed,
As known from Japanese Patent No. 32768, the massaging force was adjusted by operating a width changing switch to change the width between a pair of treatment elements. Also, Tokukai Akira
In the pine surge machine described in Japanese Patent No. 57-3643, the strength of the rolling pine surge was adjusted by operating a strength changeover switch to change the amount of protrusion of the treatment elements. However, with these pine surge machines, the massaging force must be adjusted each time the treatment element is moved to change the position to be treated, and the adjustment must also be made by operating a switch, which is time-consuming.
Furthermore, when performing rolling pine surge, even if the intensity is switched, the pressure applied to the human body differs depending on the area that the treatment element hits, and it is impossible to always keep the pressure applied to the human body constant.

[Purpose of the invention]

The present invention has been made in view of the above points, and its purpose is to automatically adjust the strength of the kneading force and rolling pine surge, and to achieve a pine surge in which the massaging force and pressure applied to the body are always constant. Our objective is to provide a pine surge machine that can perform the following tasks.

[Disclosure of the invention]

The first embodiment of the present invention will be described below with reference to FIGS.
This will be explained based on FIG. This is a chair with a pine surge machine built into the backrest of the chair.The chair is made up of pipes and has an underframe 2 that includes a seat and armrests, and a backrest frame 1 that is also made of pipes. The lower end of the frame 1 is pivotally supported by an under frame 2, and a gas spring 15 is attached between the frame 1 and the under frame 2, so that the backrest can be reclined. On both sides of the backrest frame 1, there is a pair of guide rails 1 each having a U-shaped cross section and facing opening surfaces.
2 is fixed. Further, a headrest 13 is attached to the upper end of the frame 1, a cover sheet 14 is attached to the front side of the frame 1, and vertically long support belts 99 are arranged on both sides of the back side of the cover sheet 14.

Now, the pine surge mechanism has a control box 26 on one side.
and the control box 26 and the connecting plate 28 on the other side.
It also includes a pair of wheels 3, which are eccentrically attached to the main shaft 4 in the same direction and inclined in opposite directions, as treatment elements. Each ring body 3 is composed of an eccentric inner ring 20 fixed to the main shaft 4 and an outer ring 21 freely rotatable around the outer periphery of the eccentric inner ring 20 via balls 22. As is clear from FIG. 5, the main shaft 4 is a hollow pipe through which the drive shaft 5 is inserted, and a cylindrical body 62 is fitted at both ends so as to freely rotate. The drive shaft 5 has cylinders 62 connected to both ends thereof, and the cylinders 62 have rollers 19 running on the guide rails 12 and pinions 18 that mesh with racks 11 attached to each guide rail 12. and is provided. Rollers 19 are also provided in both control box 26 and gearbox 27. The drive source, the motor M that can be rotated forward and backward, is connected to gearbox 2.
A gearbox 27 is attached to the side surface of the stator 7 to serve as a housing for the stator 17, and is capable of forward and reverse rotation.
When rotating the main shaft 4, the wheel body 3 is tilted eccentrically.
rotates at the same time, and because the wheel body 3 is eccentric, the amount of protrusion of the wheel body 3 toward the cover sheet 14 side is changed periodically. Further, since the wheels 3 are inclined in opposite directions, the distance between the pair of wheels 3 at the contact portion with the cover sheet 14 is changed periodically. The combination of these two movements results in a fir tree surge to the human body. Main shaft 4
If the drive shaft 5 is rotated instead, the entire pine surge machine will self-propel in the vertical direction of the backrest due to the rotation 19 of the pinion 18 that meshes with the rack 11 of the frame 1. This self-propulsion allows the wheel body 3, which is a treatment element, to move. That is, the drive shaft 5 and the rack 1 attached to the guide rail 12
1, a cylindrical body 62 connected to both ends of the drive shaft 5,
A pinion 18 provided on the cylinder 62 and meshing with the rack 11 constitutes a moving means for moving the pair of wheels 3, which are treatment elements, in a direction orthogonal to the main shaft 4. Furthermore, this pine serge machine is provided with a changing means for changing the axial position of the wheels 3, that is, the distance between the pair of wheels 3. This includes a feed screw 6 parallel to the main shaft 4 and the drive shaft 5,
It is composed of a pair of connecting arms 25 that connect this feed screw 6 and the inner ring 20 of each ring body 3.The feed screw 6, which is rotationally driven, has one right-hand threaded portion and the other left-hand threaded portion from the axial center. The connecting arm 25 has one end screwed into each threaded portion. A cylindrical portion 100 is formed on the inner ring 20 of each ring body 3 to extend concentrically with the main shaft 4, and the other end of a connecting arm 25 is connected to this cylindrical portion 100 via a coil spring 101. ing. That is, the spring locking part 10 fixed to one end of the cylindrical part 100
One end of the coil spring 101 is fixed to the connecting arm 25 , and the other end of the coil spring 101 is fixed to the other end of the connecting arm 25 via a thrust bearing 24 . Cylindrical part 1
A key groove 103 is formed in the axial direction on the peripheral wall of 00,
By fitting the spline 104 integrally formed on the main shaft 4 into this keyway 103, the inner rings 20 of both wheels 3 are connected to the main shaft 4 so as to be slidable in the axial direction. The rotation of the screw 6 causes the pair of wheels 3 to approach or separate from each other. An optical sensor 10 as a pressure detection means is attached to the other end of one connecting arm 25 on the wheel body 3 side.
5 is fixed. This optical sensor 105 is formed in a U-shape, and a light emitting part 106 is attached to one side and a light receiving part 107 is attached to the inside of a pair of opposing pieces. is formed. The pressure applied to the ring body 3 is detected based on the amount of light emitted by the light emitting part 106 and received by the light receiving part 107. A cylindrical light shielding part 10 is provided in the intermediate part of the cylindrical part 100 of one inner ring 20 in a concentric circle with the main shaft 4 and at a position away from the main shaft 4.
8 is formed integrally with the cylindrical portion 100, and the optical sensor 105 is located between the pair of pieces of the light shielding portion 10.
It is sandwiched between the surrounding walls of 8. The light emitted from the light emitting part 106 of the optical sensor 105 to the light receiving part 107 is partially blocked by the light shielding part 108, and when the ring body 3 moves in the axial direction of the main shaft 4 due to the pressure received from the human body, Since the light shielding part 108 also moves in the same way, the amount of light received by the light receiving part 107 of the optical sensor 105 increases or decreases, so that changes in the pressure applied to the ring body 3 can be detected.

Next, the reduction gear device in the gearbox 27 will be explained. The main speed reduction device is a planetary mechanism 8 that performs differential speed reduction, and this planetary mechanism 8 includes an output shaft 51 to which the rotor 16 of the motor M is attached, a planetary roller 52 whose large diameter portion rolls on the outer surface of the output shaft 51, a first outer ring 53 in which the large diameter portion of the planetary roller 52 is inscribed; a second outer ring 54 in which the small diameter portion of the planetary roller 52 is inscribed;
The retainer 55 is a planetary carrier that supports the planetary roller 52. First outer ring 5
The third and second outer rings 54 are meshed with a gear 57 and a gear 58 supported by a shaft 56, respectively, and the gear 57
A gear 59 that rotates together with the cylindrical body 62 meshes with a gear 60 that forms a clutch 9 as a torque limiter.
An elliptical gear 63 that rotates together with the main shaft 4 meshes with an elliptical gear 64 fixed to the main shaft 4. Here, the main shaft 4 is connected via a pair of elliptical gears 63 and 64 so that when the amount of protrusion of the wheel body 3 toward the cover sheet 14 increases, the torque increases and the angular speed of rotation is slow. This is to increase the amount of time it takes to bend and press the human body. However, in this lever, if the first outer ring 53 of the planetary mechanism 8 is locked from rotating, differential rotation will occur in the second outer ring 54 due to the difference in diameter between the large diameter part and the small diameter part of the planetary roller 52. This rotation is transmitted to the main shaft 4, and conversely, if the rotation of the second outer ring 54 is prevented, differential rotation occurs in the first outer ring 53 and is transmitted to the drive shaft 5.

The power transmission system to the feed screw 6 is configured such that the feed screw 6 is connected to the power transmission system to the main shaft 4 by an electromagnetic clutch 10. That is, the gear 58 provided between the planetary mechanism 8 and the main shaft 4
A connecting gear 61 for deceleration is engaged with the connecting gear 61, and an electromagnetic clutch 10 is further connected to this connecting gear 61. The electromagnetic clutch 10 housed in the gear box 27 has an outer input hub 82 and an inner input hub 81 whose outer circumferential surfaces are shaped like gears and mesh with the connecting gear 61, and an outer output hub 84 and an inner output hub as output members. 83, and an electromagnet 87 made up of a coil 88, a yoke 89, and a cylindrical iron core 90.
An inner output hub 83 is fixed to a feed shaft 80 which is rotatably supported by a bearing at 7 and connected to the feed screw 6 at one end. input hub 8
1 and an electromagnet 87 are each held at the other end of the feed shaft 80 so as to be freely rotatable. The inner input hub 81 and the outer input hub 82 are press-fitted and fixed to each other so as to form a double cylindrical shape, and a space for arranging a coil spring 86 is formed between them. Further, the outer output hub 84 and the inner output hub 83 rotate together as a projection at one end of the outer output hub 84 engages with a notch provided in a flange formed at one end of the electromagnet 87 of the inner output hub 83. are connected to each other in such a way that And this outer output hub 8
A space for arranging a coil spring 86 is also provided between the inner circumferential surface of the output hub 4 and the outer circumferential surface of the inner output hub 83, and a ring-shaped space located at the front surface of the flange is provided between the two. ing. This space is a space for disposing a ring-shaped clutch 85 made of a magnetic material, and the electromagnetic force of the electromagnet 87 causes the clutch 85 to come into contact with the clutch surface on the front surface of the flange. still,
The inner output hub 83 has at least one end with a flange made of a magnetic material to form a magnetic circuit.
The outer output hub 84 is made of non-magnetic material.
The coil spring 86 has one end locked to the inner input hub 81 and the other end locked to the clutch shoe 85, and the coil spring 86 is configured to fit into the arrangement space between the outer input hub 82 and the inner input hub 81 and the outer output hub. 84 and the arrangement space between the inner output hub 83 and the inner output hub 83 .

In the electromagnetic clutch 10 configured in this way, when the electromagnet 87 is not excited, the clutch shoe 85 is not in contact with the clutch surface.
Further, since the coil spring 86 is in a state where it is not in contact with either the inner peripheral surface of the outer output hub 84 or the outer peripheral surface of the inner output hub 83, the connection gear 61 that meshes with the outer input hub 82 is connected to the input hub 8
Even if rotational motion is transmitted to 2 and 81, the coil spring 86 and clutch shoe 85 are
The output hubs 84 and 83 do not rotate, but are in a disconnected state, and therefore the feed screw 6 does not rotate. However, when the electromagnet 87 is excited to bring the clutch shoe 85 into suction contact with the clutch surface, resistance will be generated in the rotation of the clutch shoe 85 to which the coil spring 86 is connected. The diameter becomes smaller or larger depending on the direction of rotation. When the diameter becomes smaller, the coil spring 86 moves to the inner output hub 83.
The inner output hub 8 wraps around the outer peripheral surface of the
When the diameter increases, the rotary power is transmitted to the outer output hub 84 by pressing against the inner circumferential surface of the outer output hub 84. These output hubs 84,
The rotation of 83 is taken out from the feed shaft 80 and rotates the feed screw 6.

Now, the rotation of the first outer ring 53 and the second outer ring 54 in the planetary mechanism 8 is selectively prevented, and the motor M
The members for switching the power between the main shaft 4 and the drive shaft 5 are a single solenoid SOL and a braking mechanism 7 controlled by this solenoid SOL.
This braking mechanism 7 housed in the gearbox 27 includes a fixed hub plate 30 through which a shaft 29 is inserted, and a fixed hub plate 30 fixed to both sides of the fixed hub plate 30 in the axial direction, as shown in FIGS. 7 and 8. A pair of fixed hubs 31, 35, a pair of movable hubs 32, 36 supported by a shaft 29 and arranged in the axial direction of each fixed hub 31, 35, each movable hub 32, 36 and fixed hub 3
a pair of left and right outer circumferential collars 33, 37 and an inner circumferential collar 34, 38 disposed on the outer circumference and inner circumference extending over the fixed hubs 31, 35, and the inner circumferential surface extending over the fixed hubs 31, 35 and each movable hub 32, 36; and a total of four coil springs 41, 42, 43, 44 arranged so as to be in contact with the outer peripheral surface, and a fixed hub 31,
At 35, each inner gear part 46 and the gear part 4 are supported by a connecting shaft 39, and the outer collar 33, the inner collar 34, the outer collar 37, and the inner collar 38 are connected to each other.
7 and a pinion 40, both outer peripheral collars 33 and 37 are connected to a solenoid SOL arranged perpendicularly to the shaft 29, and one movable hub 32 is engaged with the gear 58. The other movable hub 36 is connected to the drive shaft 5 by meshing with the gear 57 via the shaft 29 passing through each member and the gear 65. Also, among the four coil springs, two coil springs located on the outer circumferential side have different winding directions.
The coil springs 42 and 44 are connected to the fixed hub 3.
1, 35 and the movable hubs 32, 36, one end of each is inserted into the engagement hole 48 of the fixed hub plate 30, and the other end is inserted into each of the outer peripheral collars 33, 37.
two coil springs 41 with different winding directions and located on the inner circumferential side,
43 is the fixed hub 31, 35 and the movable hub 32,
It has an outer diameter larger than the inner diameter of the hub plate 36, and has one end thereof engaged with an engagement hole 48 of the fixed hub plate 30, and the other end thereof engaged with an engagement hole 49 of each inner peripheral collar 34, 38. The coil springs 41 and 42 are wound in the same direction, and the coil springs 43 and 44 are wound in the same direction.

In this braking mechanism 7 configured as described above, when the solenoid SOL is in the returned state by the return spring 45, the inner peripheral surfaces of the movable hub 36 and the fixed hub 35 connected to the drive shaft 5 and A coil spring 4 is attached to the outer peripheral surface as shown in Fig. 9b.
The movable hub 32 and the fixed hub 31, which are connected to the main shaft 4, are shown in FIG. As shown in a, the diameter of the outer coil spring 42 is increased by the force of the return spring 45 via the outer collar 33, and the inner coil spring 41 is moved in the opposite direction to the outer collar 33 by the return spring 45. The movable hub 32 and fixed hub 31 are further wound in the winding direction by an inner peripheral collar 34 that rotates with the force of
Since the movable hub 32 is separated from the circumferential surface of the main shaft 4, the movable hub 32 is disconnected from each other, and therefore the movable hub 32 connected to the main shaft 4 is in a free state. That is, at this time, the rotation of the motor M is transmitted to the main shaft 4 and then to the feed screw 6 after being decelerated by differential deceleration by the planetary mechanism 8. solenoid
When the SOL is activated, the outer collars 33, 37 rotate in the directions shown by the arrows in FIG. 9, and the inner collars 34, 38 also rotate in the opposite direction via the pinion 40. Coil springs 41, 42, 4 with fixed hubs 31, 35
In order to reverse the connection by 3 and 44 to the above case, the rotation of the movable hub 32 connected to the main shaft 4 is locked, and the differential deceleration output of the motor M is transferred to the drive shaft 5.
It becomes a state where it is transmitted to. In this braking mechanism 7, both movable hubs 32 and 36 are connected to the planetary mechanism 8 or to the main shaft 4 and drive shaft 5 at one end in the axial direction, thereby consolidating the arrangement of the braking force transmission system. . Also, as is clear from Figure 9b,
In this case, when the coil springs 41, 42, 43, 44 are in a free state and prevent rotation of the movable hubs 32, 36, the engagement between these and each collar 33, 34, 37, 38 is Since the solenoid SOL is designed to have some play, and the rotation lock is not released until more than half of the stroke of the solenoid SOL has been passed, the rotation of both movable hubs 32 and 36 is prevented during switching. A situation is beginning to arise where both are locked.
This is to prevent the wheel body 3 from rotating or moving up and down due to input from the load side during switching. Note that when the power is turned off, the state is the same as when the solenoid SOL is not energized, that is, the movable hub 36 connected to the drive shaft 5 is locked, so the pine surge mechanism is It does not descend under its own weight.

In the pine surgery machine configured as described above, an operating device A for selecting the operation of the pine surgery mechanism is connected to the control box 26 via a cord 70. The cord 70 connects to the controller A side and the control box 26.
It is divided into two sides and connected via a connector 72 within a cord attachment box 71 fixed to the back frame 1. The cord 70 is a multicore cord, in which a plurality of lead wires 73 are helically bundled with a core material 74 sandwiched between them, and the periphery thereof is covered with an outer sheath 75 made of soft vinyl chloride. Generally, when a strong tensile force is applied to a multi-conductor cord, the outer sheath stretches, and force is applied directly to the conductor inside the lead wire 73.
There were cases where the conductor was disconnected. Therefore, a cord bushing 77 is formed near the connecting portion of the cord 70 on the operating device A side, and the end of the core material 74 is fixed to the outer sheath of the cord 70 with a fixing band 78.
As a result, the tensile force applied to the cord 70 is reduced to the core material 7.
4, no force is applied to the conductor within the lead wire 73 and the conductor will not be disconnected. A cord attachment portion 79 is formed in the cord attachment box 71, and the cord 70 is fixed by fitting into a groove formed in the cord bushing 77.

Now, in this pine surge machine, pine surge can be performed by rotating the eccentrically inclined wheel 3, and the rotation of the drive shaft 5 and the main shaft 4 is switched by turning on and off the solenoid SOL, and by turning the electromagnetic clutch 10 on and off. The feed screw 6 is rotated and stopped by turning it on and off. The user receives kneading force through the cover sheet 14 due to the rotation of the eccentrically inclined wheel body 3, and the wheel body 3 receives pressure from the back of the human body as this repulsive force, but since the wheel body 3 is inclined, both wheel bodies A force will act in the direction of moving 3 away from each other. A coil spring 101 that connects the other end of the connecting arm 25 to a cylindrical portion 100 formed in the inner ring 20 of each wheel body 3 biases both wheel bodies 3 toward each other. When strong massaging force is applied to the human body,
The wheel body 3 is also subjected to strong pressure, and when the force acting to move the wheel bodies 3 away from each other overcomes the spring force of the coil 101, the wheel body 3 moves away from each other. At this time, the light shielding part 108 formed integrally with the cylindrical part 100 of the inner ring 20 also moves, so in the optical sensor 105 fixed to the other end of the connecting arm 25, the amount of light received by the light receiving part 107 increases. , whereby changes in the pressure applied to the wheel body 3 are detected. Light receiving part 1
At step 07, an analog voltage corresponding to the amount of light received is generated, and this analog voltage is input to the A/D converter B, where it is converted into a digital signal. In the reference pressure storage circuit C as a storage means for storing reference pressure,
The reference pressure value is stored as a digital signal, and the signal of this reference pressure value and the light receiving part 1 of the optical sensor 105 are
A comparison/discrimination circuit D, which serves as a comparison means for comparing the output signal from the 07, compares the respective signals, and when there is a difference between the two, sends a signal corresponding to the difference to the operation instruction circuit E. The operation instruction circuit E controls the motor drive circuit F, sends an instruction signal to the motor drive circuit F, the motor drive circuit F drives the motor M, and controls the rotation of the motor M by the electromagnetic clutch 1.
0 to the feed screw 6 to widen the distance between the two wheels 3. As the distance between the two wheels 3 increases, the kneading force due to the rotation of the wheels 3 becomes weaker, and the pressure that the wheels 3 receive also becomes weaker, and the optical sensor 105 always detects the wheels 3.
Since the pressure received by the wheel body 3 is detected and a signal is sent to the comparison/discrimination circuit D, when the value of the pressure received by the wheel body 3 becomes equal to the reference pressure value, the comparison/discrimination circuit D stops sending the signal to the operation instruction circuit E. Then, the operation instruction circuit E sends an instruction signal to the motor drive circuit F, and the feed screw 6
stop the rotation. Conversely, when the massaging force is weak, the spring force of the coil spring 101 moves the two wheels 3 toward each other, so the light is blocked by the light shielding part 108 in the optical sensor 105 and is not received. It is detected that the amount of light received by the portion 107 decreases and the pressure received by the ring body 3 is weak. Comparison/discrimination circuit D
Then, the output signal of the optical sensor 105 and the signal of the reference pressure value are compared, and a signal is sent to the operation instruction circuit E to narrow the distance between the two wheels 3 until the value of the pressure applied to the wheels 3 becomes equal to the reference pressure value. . As described above, the distance between the two wheels 3 is always adjusted so that the pressure applied to the wheels 3 is equal to the reference pressure, and the kneading force applied to the human body is kept constant.

Next, a second embodiment of the present invention will be described based on FIGS. 12 to 13. This device is equipped with a pair of wheels 91 as treatment elements, which are eccentrically attached in the same direction to the main shaft 4 and spaced apart from each other.
3 is formed by extending, and the cylindrical portion 93 and the feed screw 6
are connected to each other by a connecting arm 94. One end of the connecting arm 94 is screwed into a threaded portion formed on the feed screw 6, and the other end of the connecting arm 94 is connected to the cylindrical portion 93 of the inner ring 92 via a thrust bearing 95 so as to freely rotate. There is. A sensor mounting portion 96 protrudes toward the cover sheet side at the other end of the connecting arm 94.
is formed, and an optical sensor 105 as a pressure detection means is fixed to the sensor attachment part 96.
A plurality of light shielding parts 97 each having an L-shaped cross section are formed in an annular shape with gaps between them on the connecting arm 94 side of the inner ring 92 of one ring body 91, and from the tip of each light shielding part 97 to the center of the main shaft 4. are formed so that all distances are equal. In addition, a spring portion 1 having an L-shaped cross section is provided on one outer ring 98 corresponding to each light shielding portion 97.
09 is formed in an annular shape, and each spring portion 10
The tip of 9 is slightly spaced apart from the light shielding part 97.
The optical sensor 105 has a light shielding part 97 between the pair of pieces.
A hanging piece 110 is sandwiched therebetween. When the drive shaft 5 inserted through the main shaft 4 is rotated, the entire pine surge mechanism self-propels in the vertical direction of the backrest, and this self-propelling moves the wheel body 91, which is a treatment element, within a certain range. By reciprocating the outer ring 98 of the ring body 91, the outer ring 98 of the ring body 91 moves freely around the cover sheet 1.
4, a rolling pine surge is performed on the back of the human body. With the above configuration, when strong pressure is applied to the back of the human body, the ring body 91 also receives strong pressure as a repulsive force, and at this time, the outer ring 98 receives strong downward pressure, so the spring portion formed in the outer ring 98 The tip of the light shield 109 pushes the light shield 97 formed on the inner ring 92, and the tip of the light shield 97 is moved downward. As a result, in the optical sensor 105, the light emitting part 1
The light emitted from the light receiving section 107 from the light shielding section 9
7, the amount of light received by the light receiving section 107 decreases, and changes in the pressure received by the ring body 91 are detected. The pressure detected by the optical sensor 105 is converted into a digital signal and input to the comparison judgment circuit D.
It is compared with a reference pressure value and a signal corresponding to the difference is sent to the operation instruction circuit E. The operation instruction circuit E sends an instruction signal to the motor drive circuit F, and the motor drive circuit F drives the motor M and turns on the solenoid SOL.
It is turned OFF and the differential deceleration output of the motor M is transmitted to the main shaft 4 to rotate the main shaft 4, thereby reducing the amount of protrusion of the wheel body 91 attached to the main shaft 4. If the amount of protrusion of the ring body 91 decreases, the pressure applied to the human body will weaken,
At the same time, the pressure applied to the wheel body 91 becomes weaker, so when the value of the pressure applied to the wheel body 91 and the reference pressure value become equal, the comparison discrimination circuit D stops the signal, and the operation instruction circuit E instructs the motor drive circuit F. A signal is sent to stop the rotation of the main shaft 4. On the contrary, when the pressure applied to the back of the human body is weak, the main shaft 4 is rotated to increase the amount of protrusion of the wheel body 91. That is, the main shaft 4 itself constitutes a changing means for changing the rotation angle of the wheel body 91, and by rotating the main shaft 4 by a predetermined angle and changing the rotation angle of the wheel body 91, the rotation angle of the wheel body 91 can be changed eccentrically to the main shaft 4. The amount of protrusion of the attached wheel body 91 relative to the main shaft 4 is changed. As described above, the ring body 9
The amount of protrusion of the ring body 91 is always adjusted so that the pressure applied to the human body is equal to the reference pressure, and the pressure applied to the human body is kept constant. The rest of the structure is the same as the first embodiment.

Incidentally, in the first and second embodiments described above, an optical sensor is used as a detection means for detecting the pressure applied to the wheel body, but similar effects can be obtained by using a pressure sensor such as a load cell. Further, a separate motor may be provided to change the interval between the pair of wheels or change the rotational position.

〔Effect of the invention〕

As explained above, according to the present invention, the pressure received by the treatment element is compared with the reference pressure, and if these pressures differ, the pressure applied to the treatment element is compared, and if the pressures differ, the Since the spacing between the wheels is changed until the pressure on both sides is equal, the strength of the kneading force of the kneading pine surge created by sandwiching the human body between the pair of wheels is automatically adjusted and has the effect of always being constant. . Therefore, there is no need to adjust the massaging force by operating a switch every time the position to be treated is changed.

Also, compare the pressure received by the treatment element with the reference pressure, and if these pressures differ, change the rotation angle of the wheel mounted eccentrically on the shaft until both pressures are equal, and adjust the rotation angle of the wheel relative to the axis. Since the amount of protrusion is changed, the strength of the rolling pine surge caused by moving the treatment element in the direction orthogonal to the axis is automatically adjusted and always kept constant. Therefore, the pressure applied to the human body does not vary depending on the part of the body that is hit by the treatment element.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the first embodiment of the present invention;
The figure is a perspective view of the back side of the same as the above, Fig. 3 is a broken plan view of the same as the above, Fig. 4 is a broken back view of the same as the above, Fig. 5 is a sectional view of the main part of the same as the above, and Fig. 6 is a light shielding part of the same as the above. A perspective view, FIGS. 7a and 7b are vertical and cross-sectional views of the same braking mechanism as above, FIGS. 8a and b are cross-sectional views of the same braking mechanism as seen from different directions, and FIG. FIG. 10 is a perspective view of the attachment portion of the cord, FIG. 11 is a block circuit diagram of the same essential parts, and FIG. 12 is a sectional view of the essential parts of the second embodiment of the present invention. FIG. 13 is a perspective view of the light shielding portion same as above. 3,91...Wheel, 4...Main shaft, 5...Drive shaft, 6...Feed screw, 11...Rack, 12...
Guide rail, 18... Pinion, 25... Connection arm, 62... Cylindrical body, 105... Optical sensor, C
...Reference pressure memory circuit, D...Comparison discrimination circuit, F
...Motor drive circuit, M...Motor.

Claims (1)

[Claims] 1. A treatment element consisting of a rotatably driven shaft, a pair of wheels attached to the shaft with inclinations in opposite directions, and a treatment element that moves the pair of wheels along the axis. a changing means for changing the distance between the two wheels, a moving means for moving the treatment element in a direction perpendicular to the axis, a detection means for detecting the pressure applied to the treatment element, and a storage means for storing a reference pressure; Comparing means for comparing the pressure detected by the detecting means and the reference pressure, and when the pressure detected by the detecting means and the reference pressure are different, the comparing means drives the changing means until both pressures become equal. Pine surge machine. 2. A treatment element consisting of a wheel eccentrically attached to a shaft, a changing means for changing the rotation angle of the wheel by rotating the shaft by a predetermined angle, and a moving means for moving the treatment element in a direction perpendicular to the axis. and a detection means for detecting the pressure applied to the treatment element, a storage means for storing a reference pressure, and a comparison means for comparing the pressure detected by the detection means and the reference pressure, the comparison means detecting the pressure applied to the treatment element. When the pressure detected by the means differs from the reference pressure, the changing means is driven until both pressure values become equal.