JP3828766B2 - Massage machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention detects the height position of a human body shoulder by a shoulder massage unit attached to the backrest and continuously massages the human body shoulder.Suitable massage machineAbout.
[0002]
[Prior art]
The present applicant has applied for a chair-type massage machine in which a shoulder massage unit suitable for massaging the shoulder of a human body is incorporated in the backrest as Japanese Patent Application No. 11-361206. The shoulder massage unit of the massage machine includes a posture change base that is rotated about a support shaft over a first position that is a substantially horizontal posture and a second position that is a substantially vertical position. A tilting plate is mounted on the change base so as to be rotatable about a hinge shaft, and an operating air bag is disposed on the rear side of the tilting plate. Then, a treatment pressing body made of semi-rigid rubber is located on the free end of the tilting plate and projects forward.
[0003]
By rotating the posture changing base of the massage unit, the treatment pressing body can be moved from the neck of the human body along the shoulder. And in a state stopped at an arbitrary moving position, the shoulder portion can be massaged using the treatment pressing body by supplying and exhausting air to and from the working air bag.
[0004]
By the way, in order to massage the shoulder properly regardless of the difference in the height of the upper body of the human body, it is desired to detect the position of the shoulder and massage based on it. No. -361206 teaches no technique for detecting the height position of the shoulder (hereinafter referred to as shoulder position detection).
[0005]
The technique for detecting the shoulder position is generally performed by moving a relatively hard treatment element commonly referred to as a kneading ball and placing it on the shoulder.
[0006]
When this technique is applied to the Japanese Patent Application No. 11-361206, the tilting plate on which the treatment pressing body protrudes as the shoulder massage unit is lowered is moved to the shoulder portion via the treatment element. Since the hinge shaft is pivoted about the fulcrum at the same time that the button is pressed, it is considered that the shoulder position can be detected based on the pivot.
[0007]
However, in this shoulder position detection, the shoulder position detection information cannot be obtained accurately unless the rotation angle of the tilting plate having the hinge axis as a fulcrum is relatively large. In addition, there is a distance corresponding to the length of the tilting plate between the treatment pressing body and the hinge shaft, and the tilting plate that can rotate about the hinge shaft as a fulcrum is not caught on the human shoulder, In order to rotate the shoulder position detection, it is necessary to lower the shoulder massage unit with the hinge shaft on the lower side in the shoulder position detection.
[0008]
However, in the state where the shoulder position is detected in this way, the treatment pressing body projecting from the tilting plate is disposed at a height position slightly lower than the upper surface of the human body shoulder, and more than this position. The hinge shaft is positioned below. Then, when the transition to shoulder massage continues in this state, the pressure applied to the human shoulder by the treatment pressing body with the rotation of the tilting plate with the hinge shaft as a fulcrum is directed toward the human shoulder forward. It contains a lot of ingredients to push. For this reason, it is difficult to press the shoulder of the human body from the diagonally upper rear side, and it is not possible to perform a good massage.
[0009]
[Problems to be solved by the invention]
  The problem to be solved by the present invention is to perform shoulder massage well after shoulder position detection.Massage machine that can be performedThere is in getting.
[0012]
[Means for Solving the Problems]
  In order to solve the above problems, the present invention provides a massage machine body having a backrest portion;A unit base provided on the backrest portion so as to be movable in the vertical direction; a pair of left and right shoulder massage units arranged side by side in the width direction of the backrest portion on the front side of the unit base; A posture change base supported by a base so as to be rotatable by a support shaft, a tilt plate supported by the posture change base so as to be pivotable in the front-rear direction via a hinge shaft on the front side of the base, and a free end of the tilt plate A treatment element provided in a section, an actuating airbag that is disposed between the tilting plate and the posture changing base and is inflated to rotate the tilting plate forward, and the tilting plate is rotated backward. A shoulder position sensor comprising a switch having an actuator to detect and attached to the posture changing base and performing an on / off operation based on a forward and backward rotation of the tilting plate; and a state of the sensor Wherein with urging means for urging the canting plate to the rear without changingWith massage unit;A unit moving mechanism for displacing the massage unit in the vertical direction of the backrest portion via the unit base; a human body having a motor attached to the unit base and the treatment element leaning against the backrest portion A posture changing mechanism for moving the posture changing base by rotation about the support shaft so as to move along a trajectory approximating a body-shaped curve extending from the neck to the shoulder of the shoulder; and a motor of the posture changing mechanism And controlling the expansion / contraction of the working air bag, causing the working air bag to inflate / contract at the movement destination of the posture change base, and controlling the unit moving mechanism,The massage unit is lowered in a posture in which the hinge shaft is positioned downward with respect to the treatment element, and the shoulder position sensor detects the human shoulder position along with the lowering, and then the massage unit is raised by a predetermined distance. And thenRepeated air supply and exhaust to the working air bagMassage the shoulders of the human bodyControl means to startAnd
[0013]
  The present inventionIn this case, the tilting plate and the treatment element of the massage unit need not be arranged even if they are arranged outside the backrest part, and the shoulder massage unit is movable so that the position of the backrest part in the width direction can be adjusted. However, the present invention is not limited to this. or,The present inventionIn the treatment element, a treatment pressing body made of semi-rigid rubber, for example, having a hardness capable of transmitting the weight of the human body to the tilting plate and rotating the tilting plate rearward can be suitably used. However, it is also possible to use a vibrator as a treatment element. or,The present inventionHowever, the number of hinge shafts is not limited to one, for example, two hinge shafts protruding from both sides of the tilting plate in the width direction, or inserted into bearing holes provided in the tilting plate so as to approach each other on both sides of the tilting plate in the width direction. With two hinge shaftsThere may be.
[0014]
  The present inventionIn the unit movement mechanism andAir bag for operation, etc.After the shoulder position sensor detects the position of the human shoulder, the shoulder massage unit is moved by lowering the shoulder massage unit in a posture in which the hinge shaft is positioned below the treatment element. After a predetermined distance is raised, the operating means of the unit is operated to start massage on the human shoulder,The height of the shoulder massage unit relative to the human shoulder is optimal. Therefore, in this shoulder massage, the body shoulder can be massaged by pressing it from diagonally upward and rearward with a treatment element protruding on the plate via a tilting plate that rotates about the hinge shaft. it can.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0016]
Reference numeral 1 in FIG. 1 indicates a chair body as a massage machine body of the massage machine A. The body 1 has a backrest portion 3 after the seat portion 2 and is disposed on both sides of the seat portion 2 in the width direction. An armrest 4 is provided. One armrest 4 is provided with an operation unit 5. Various massage operations of a massage apparatus described later are instructed by an input operation on the operation unit 5. A footrest 6 is pivotally attached to the front side of the chair body 1 and is arranged at an arbitrary position between the standing posture shown in FIG. it can. A unitized air supply / exhaust device 7 is disposed below the seat 2.
[0017]
The backrest 3 has a cover 3a covering the surface thereof, and the cover 3a is formed of a flexible cloth or synthetic leather. A massage device 8 is incorporated in the backrest 3. As shown in FIG.1 and FIG.2, the massage apparatus 8 is provided with the upper massage body 10, the lower massage body 11, and the unit moving mechanism 12 arrange | positioned among these.
[0018]
The upper massage body 10 includes a pair of left and right shoulder massage units (hereinafter abbreviated as “shoulder units”) 10a and 10b arranged on the unit base 21 in the width direction of the backrest portion 3, and disposed below them. The scapula massage unit (hereinafter referred to as a scapula unit) 22 is provided.
[0019]
The shoulder units 10a and 10b are provided in a line-symmetric arrangement with respect to the center of the backrest 3 in the width direction, and since these have the same configuration, one of the shoulder units 10a is representatively described. To do.
[0020]
As shown in FIGS. 2, 3, 5, 6, and 8, the shoulder unit 10 a includes a posture change base 26 that is rotatably supported on the unit base 21 by a support shaft 25, and the change base 26. A hinge plate 27 fixed above, a tilting plate 30 rotatably supported on the hinge plate 27 via a hinge shaft 29, and operating means for rotating the plate 30, such as the hinge plate 27 and the posture changing base 26 An operating air bag 28 supported on the posture changing base 26 with one end sandwiched therebetween, a treatment pressing body 31 as a treatment element provided on the tilting plate 30, and a twist as a biasing means And a spring 32. Further, at least one of the shoulder units 10a and 10b, for example, the shoulder unit 10a includes a switch 24 as a shoulder position sensor attached to the posture changing base 26.
[0021]
The unit base 21 is formed with a gear support recess 33 (represented by one corresponding to one shoulder unit 10a in FIG. 6), and a bearing hole 33a is provided on the bottom wall thereof. A part of the peripheral wall of the gear support recess 33 is open. As shown in FIG. 6, a gear 34 is accommodated in the gear support recess 33, and a part of the gear 34 protrudes from the open portion of the peripheral wall. One end portion of the gear shaft 34a of the gear 34 passes through the bearing hole 33a, and a nut 35 for retaining is attached to the penetrating end portion so as not to prevent the rotation of the gear 34.
[0022]
The posture changing base 26 has a connecting hole 26a (see FIG. 2) located at the other end opposite to the one end where the hinge plate 27 is attached. The other end of the gear shaft 34a is used as the support shaft 25, and this shaft 25 is inserted into the connection hole 26a and connected by key engagement or the like, and is prevented from coming off and rotating. Therefore, when the gear 34 is rotated, the posture changing base 26 is rotated integrally therewith. The posture changing base 26 is rotated in an angle range of about 90 degrees between the first position in the substantially horizontal posture shown in FIG. 2 and the second position in the substantially vertical posture shown in FIG. Any position between them can be selected and stopped.
[0023]
  The orientation of the shoulder unit 10a is changed by the rotation of the posture changing base 26.Pressure body 31 for treatmentHowever, it is moved while drawing a locus that approximates a body-shaped curve extending from the neck of the human body leaning on the backrest 3 to the shoulder tip. The shoulder unit 10a (10b) can massage the neck of the human body at the first position, and can massage the front of the human body at the second position.
[0024]
As shown in FIG. 5, the hinge plate 27 is formed in a U shape from a metal plate or the like, and the hinge shaft 29 extending over the both side walls is formed in a shaft through hole 27 a opened opposite to the side walls parallel to each other. Is installed through. The hinge shaft 29 is prevented from coming off by retaining rings 37a and 37b attached to both ends thereof, and one end portion of the hinge shaft 29 protrudes relatively long from one retaining ring 37b. 5 and 6 indicates a screw for fixing the hinge plate 27 to the posture changing base 26.
[0025]
As shown in FIG. 5 and the like, the tilting plate 30 made of a hard material such as ABS resin has a thickness at one end portion, and has an axial through hole 30a penetrating in the width direction in this portion. A hinge shaft 29 is inserted through the shaft hole 30a. Therefore, the tilting plate 30 is provided so as to be rotatable in the front-rear direction of the backrest 3 with the hinge shaft 29 as a fulcrum. The treatment pressing body 31 is attached to the end of the tilting plate 30 opposite to the hinge shaft 29, that is, the surface on the free end side so as to protrude forward. The treatment pressing body 31 is made of semi-hard rubber.
[0026]
The working airbag 28 that is inflated and deflated by air supply / exhaust is formed in a rectangular shape that is larger than the tilting plate 30 and slightly smaller than the posture changing base 26. One side of the airbag 28 is sandwiched between the posture changing base 26 and the hinge plate 27. The clamping is performed by fastening the screws 38 together. Thereby, the operating airbag 28 is disposed between the posture changing base 26 and the tilting plate 30. The airbag 28 has no connection relationship with the tilting plate 30. By inflating this working air bag 28, as shown in FIG. 8C, the tilting plate 30 is pushed forward and rotated forward about the hinge shaft 29 as a fulcrum. .
[0027]
As shown in FIG. 6, the torsion spring 32 used for constantly urging the tilting plate 30 toward the working air bag 28, that is, rearward, is provided with a hinge shaft 29 wound around. One end 32 a serving as a fixed end of the spring 32 is hooked on the hinge plate 27, and the other end 32 b serving as a working end is hooked on the surface of the rotating base end of the tilting plate 30.
[0028]
As described above, the shoulder unit 10a configured as described above is movable from the first position in the substantially horizontal position to the second position in the substantially vertical position as described above. . The treatment pressing body 31 can press the base portion of the neck of the human body from the side surface direction via the tilting plate 30 that rotates so as to fall forward with the inflation of the operating airbag 28 at the first position. Further, the shoulder unit 10a in the second position has a posture in which the hinge shaft 29 is disposed below the treatment pressing body 31, and is used for treatment as the working airbag 28 is inflated in the second position. The pressing body 31 can press the side closer to the shoulder of the human body from the oblique rear upper direction.
[0029]
As shown in FIGS. 6 and 8, the shoulder position detection switch 24 includes a switch body 24a, an actuator 24b, and a return spring 24c. For the switch body 24a, a push-type switch, for example, a micro switch that is turned on when pressed and turned off when the pressing force disappears is used. The actuator 24b rotates about the fulcrum 24d to turn on and off the switch body 24a. The free end portion of the actuator 24b is curved. An on / off signal of the switch 24, that is, a shoulder position detection signal is sent to a control means (not shown) described later.
[0030]
  The switch main body 24 a is built in the posture change base 26. The actuator 24b is passed through the front opening 26b of the posture changing base 26, and its curved free end isPressure body 31 for treatmentIt is located just behind and is in contact with the back surface of the operating airbag 28. The return spring 24c is disposed on the back side of the free end portion and urges the actuator 24b forward so as to be away from the switch body 24a.
[0031]
As shown in FIGS. 4 and 6, a mechanism support plate 41 is attached to the back surface of the unit base 21, and a posture changing mechanism 42 is attached to the support plate 41. The mechanism 42 is formed of a motor that can rotate forward and backward, such as a stepping motor 43, and a gear train shown in FIG.
[0032]
The gear train includes a drive gear 44 fixed to the rotating shaft 43a of the motor 43, a pair of final gears 45a and 45b, intermediate gears 46 and 47 that connect the drive gear 44 and one final gear 45a, and a drive gear 44. It has an intermediate gear 48 that connects the other final gear 45b. One final gear 45a arranged coaxially with the intermediate gear 47 is meshed with the gear 34 for one shoulder unit 10a. The other final gear 45b arranged coaxially with the intermediate gear 48 is meshed with the gear 34 for the other shoulder unit 10b. Both the gears 34 of the shoulder units 10a and 10b are rotated at the same speed and at the same angle in opposite directions by the gear train.
[0033]
As shown in FIGS. 2 to 4, the scapula unit 22 has a horizontally long airbag 51 fixed to an inclined back surface of a recess 21 a formed in the lower part of the unit base 21, and a front side of the bag 51. A pair of rotating plates 53 attached to the recess 21 a via the hinge 52 and a treatment pressing body 54 fixed to the front surface of the rotating plates 53 are provided. The hinge 52 pivotally supports the upper end portion of the rotating plate 53. In this unit 22, due to the inflation of the airbag 51, the treatment pressing body 54 performs a massage by pressing the circumference of the upper scapula obliquely upward with the rotation of the rotation plate 53.
[0034]
As shown in FIGS. 1 and 2, the lower massage body 11 includes a back massage unit 55 and a lower back massage unit 56 connected to the lower side. The back massage unit 55 includes a pair of shaft-shaped treatment elements 59 that appear and disappear with respect to the front wall of the casing 58 as the airbag (not shown) built in the casing 58 expands and contracts.
[0035]
  The waist massage unit 56 includes one air bag 61 supported by the lower inclined surface 58a of the housing 58,Lower inclined surface 58aA base plate 63 pivotally supported on the upper end of the plate 63 via a hinge 62, a pair of pivot plates 65 pivotally supported on the plate 63 via a hinge 64, and the rear sides of the pivot plates 65 individually. A pair of arranged airbags 66 and a treatment pressing body 67 attached to the front surfaces of both rotating plates 65 are provided. The unit 56 massages the human lumbar region by the treatment pressing body 67 by rotating the rotating plate 65 by inflating and contracting the pair of airbags 66 while maintaining the inflation of the airbag 61.
[0036]
As shown in FIGS. 2 and 3, the unit moving mechanism 12 is fixed across a pair of left and right guide rails 71 whose upper and lower ends are fixed in the backrest portion 3, and approximately the vertical center of these rails 71. Motor fixing plate 72, a single up-and-down driving motor 73 fixed to the plate 72, a driving pulley 74 fixed to the output shaft of the motor 73, and a distance from the pulley 74. Two driven pulleys 75, 76 with electromagnetic clutches as switching means pivotally supported by the motor fixing plate 72, an endless transmission belt 77 wound around the pulleys 75, 76 and the drive pulley 74, An upper feed screw shaft 78 fixed to the driven pulley 75 and a lower feed screw shaft 79 fixed to the driven pulley 76 are provided.
[0037]
The guide rails 71 are receiving portions 81 (see FIGS. 4 and 9) formed on the back surfaces of both side portions of the unit base 21 of the upper massage body 10, and receiving portions formed on both side portions of the housing 58 of the lower massage body 11. Each part 82 (see FIG. 2) is penetrated.
[0038]
The motor fixing plate 72 is provided with a sensor (not shown) for detecting the relative distance of the upper massage body 10 based on this and a sensor (not shown) for detecting the relative distance of the lower massage body 11. Yes.
[0039]
  As shown in FIG. 2, the upper feed screw shaft 78 isUpper massage body 10It penetrates in a state where it is screwed into a screw receiving portion 83 formed on the back surface of the unit base 21. Similarly, the lower feed screw shaft 79 isLower massage body 11It penetrates in the state which screwed together with the screw receiving part 84 formed in the back surface of the housing | casing 58 of this.
[0040]
  Therefore, when the elevating drive motor 73 is driven, the feed screw shafts 78 and 79 are rotated in a predetermined direction via the drive pulley 74, the transmission belts 77 and 78, and the driven pulleys 75 and 76, and this rotation causes the rotation.Upper massage body 10OrLower massage body 11Moves up and down while being guided by the guide rail 71.
[0041]
  The air supply / exhaust device 7 electrically operates an air compressor, a rotary distribution switching valve connected to the compressor, a plurality of supply / exhaust tubes connected to the valve, and the air compressor and distribution switching valve. And the motor 43 of the attitude changing mechanism 42 and the elevating drive motor 73 of the unit moving mechanism 12 are electrically controlled.Control means such as the control circuit 7a (see FIG. 9)I have. Since the air supply / exhaust tube is connected to the air bag 28 for operation, the air bags 51, 61, 66, etc., respectively.Control circuit 7aEach air bag 28, 51, 61, 66 can be individually inflated and deflated by selectively supplying and exhausting air under this control. Therefore,Control circuit 7aIn addition to controlling the expansion and contraction of the airbags 51, 61, 66, the operation of the unit moving mechanism 12 is controlled together with the operation of the airbag 28 as an operating means.
[0042]
When performing point massage on the human shoulder using the upper massage body 10 of the massage machine A configured as described above, first, the left and right shoulder units 10a and 10b are moved from the first position in the posture shown in FIG. Is moved to the second position so as to be changed to the posture shown in FIG. In this movement, the motor 43 of the posture changing mechanism 42 is operated for a predetermined time, and the posture changing bases 26 of the shoulder units 10a and 10b are rotated about 90 degrees in synchronism with the directions away from each other about the support shaft 25. Is done by. Thereby, as shown in FIG. 3, the shoulder units 10 a and 10 b are arranged in such a posture that the hinge shaft 29 is positioned almost directly below the treatment pressing body 31.
[0043]
Next, the unit base 21 supporting the shoulder units 10a and 10b is moved downward by operating the drive motor 73 of the unit moving mechanism 12 while the operating airbag 28 is held in the contracted state in this state. Move it to detect shoulder height.
[0044]
  In the state where the shoulder position is not detected, as shown in FIG. 8 (A), in accordance with the actuator 24b pushed forward by the spring force of the return spring 24c of the switch 24, the balance with the spring force of the torsion spring 32 is obtained.Air bag for operationThrough 28Tilt plate 30Is held in a slightly leaned state. In this state, as it has been displaced downward as described above, the shoulder part of the upper body of the human body leaning on the backrest 3 is slightly tilted forward from above.Tilt plate 30The pressing body 31 for treatment attached to is hit.
[0045]
  Then, relatively through the treatment pressing body 31Tilt plate 30Is pushed upward,Tilt plate 30Rotates backward about the hinge shaft 29. Along with that,Tilt plate 30ButAir bag for operationThe actuator 24b is pushed against the return spring 24c via 28, and the actuator 24b is pushed against the switch body 24a as shown in FIG. 8B. Therefore, the switch 24 is turned on and the shoulder position is detected.
[0046]
  This shoulder position detection state is shown in FIG. 9A, in which the symbol E indicates the human body and F indicates the shoulder. At the time of this detection, the compression position of the treatment pressing body 31 protruding from the upper end portion of the tilting plate 30 to the human body shoulder F is at a height position slightly lower than the upper surface of the shoulder F, and tilting is performed. The hinge shaft 29 that pivotally supports the upper end of the plate 30 is positioned below the upper surface of the shoulder F by an amount corresponding to the length of the tilting plate 30. Therefore, assuming that this state continues and the shoulder massage is continued, the hinge shaft 29 is used as a fulcrum.Tilt plate 30The pressing force applied to the human body shoulder F by the treatment pressing body 31 with the rotation of the body includes many components that push the human body shoulder F forward, which is not preferable for shoulder massage.
[0047]
However, the shoulder position detection signal is supplied to the control circuit 7a of the air supply / exhaust device 7 as the switch 24 is turned on as described above. For this reason, after the drive motor 73 of the unit moving mechanism 12 is immediately stopped by the control circuit 7a, the direction of the applied current is changed so that the motor 73 raises the unit base 21 for a predetermined time. Is done. This driving time is set to about 1 second by a timer (not shown) provided in the control circuit 7a, for example.
[0048]
Thereby, the unit base 21 is raised by a predetermined distance (2 cm to 5 cm) corresponding to the driving time of about 1 second. The height position adjustment state in which the height positions of the shoulder units 10a and 10b together with the unit base 21 are optimized for massaging the shoulder F corresponding to the length of the tilting plate 30 is shown in FIG. ).
[0049]
After the height position adjustment, the air supply / exhaust device 7 of the air supply / exhaust device 7 repeatedly supplies and exhausts air to and from the operation air bag 28 of the shoulder units 10a and 10b. Is done.
[0050]
The state in which the working airbag 28 is inflated during this massage is shown in FIGS. 8C and 9B. In this state, the tilting plate 30 is pushed forward by the air bag 28 and is rotated so as to be tilted forward with the hinge shaft 29 as a fulcrum. Therefore, the treatment pressing body 31 above the hinge shaft 29 is the shoulder portion of the human body. Press F diagonally from above. In this compression, since there is little force that allows the human body shoulder F to escape and move forward, it is possible to effectively compress the pot of the shoulder F and perform massage effectively.
[0051]
At the time of the above compression, the switch 24 is turned off because a force sufficient to press the actuator 24b against the return spring 24c against the switch body 24a is not applied to the actuator 24b by the inflated airbag 28. Maintain state. Moreover, the state which the operation | movement airbag 28 contracted during the massage is shown by FIG. 8 (A). In this state, the tilting plate 30 is pushed back so as to approach the unit base 21 to cancel the compression.
[0052]
In the shoulder massage described above, the tilting plate 30 of the shoulder units 10a and 10b is always pushed toward the unit base 21 by the spring force of the torsion spring 32, and therefore the tilting plate 30 is pushed back by the spring 32. Can do. Therefore, even when the user's weight does not act on the tilting plate 30 such as when the user once leaves the chair body 1 while the shoulder units 10a and 10b are being driven, the operating airbag 28 is inflated and contracted. It is possible to reliably perform the cooperative operation of following and rotating the tilting plate 30 back and forth, so that once the user who is away from the chair body 1 is seated again, the massage by the shoulder units 10a and 10b is performed again. Can receive.
[0053]
In the above-described shoulder position detection, the hinge shaft 29 is positioned below the treatment pressing body 31 by the movement of the shoulder units 10a and 10b from the first position to the second position accompanied by the posture change. Performed in posture. Therefore, there is no inconvenience that the force with which the human body shoulders relatively pushes the tilting plate 30 acts in the axial direction of the hinge shaft 29, and the tilting plate 30 is rotated rearwardly by the force via the treatment pressing body 31. Can be made. In other words, since an excessive force does not act on the support portion of the tilt plate 30, the shoulder units 10a and 10b have good durability, and the tilt plate 30 for turning on the switch 24 can be smoothly rotated backward. Since the operation can be guaranteed, the reliability of shoulder position detection can be improved.
[0054]
The shoulder position detection is performed by placing the treatment pressing body 31 closer to the human shoulder tip as the shoulder units 10a and 10b are lowered in the second position. As described above, since the shoulder position is detected at a position away from the human neck, the shoulder position can be detected without being affected by the thickness of the human neck. Therefore, also in this respect, the reliability of shoulder position detection can be improved.
[0055]
  As described above, the pressing switch 24 for detecting the shoulder position is operated under the contracted state of the operating airbag 28. Therefore, despite the fact that the operating airbag 28 that inflates and applies a compression force to the human shoulder is disposed between the switch 24 and the tilting plate 30, it is rearward by the human shoulder when the shoulder position is detected. The movement of the tilting plate 30 rotated bySwitch 24It is possible to reliably spread to Therefore, unlike the case where the working airbag 28 is inflated at the time of detecting the shoulder position, the air in the airbag 28 does not buffer the movement of the tilting plate 30, so that the error in detecting the shoulder position is reduced. Is possible.
[0056]
【The invention's effect】
  According to the present invention, since the height of the shoulder massage unit is raised to an optimal position with respect to the human shoulder after detecting the human shoulder, massage is performed on the human shoulder. It is possible to massage with pressure from diagonally upward and rearward, so shoulder massage is performed well following shoulder position detection.Massage machine that can be performedCan provide.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a chair type massage machine according to an embodiment of the present invention, with a part cut away.
2 is a perspective view showing a massage device incorporated in a backrest portion of the massage machine in FIG. 1; FIG.
FIG. 3 is a perspective view showing a shoulder massage unit provided in the massage device of FIG. 2 in a vertically oriented posture.
4 is a perspective view showing a shoulder massage unit provided in the massage apparatus of FIG. 2 as seen from the rear side thereof. FIG.
5 is an exploded perspective view showing a part of a shoulder massage unit provided in the massage device of FIG. 2; FIG.
6 is a plan view showing the periphery of the massage unit on the left side in FIG. 2;
7 is a front view showing the configuration of a gear train that controls the posture change of the shoulder massage unit provided in the massage device of FIG. 2; FIG.
FIGS. 8A to 8C are cross-sectional views showing different states of the shoulder massage unit disposed in the second position in a vertical posture together with a switch incorporated in the shoulder massage unit.
FIG. 9A is a diagram showing a positional relationship between a human body shoulder and a shoulder massage unit in a state where the human body shoulder is detected.
(B) is a figure which shows the positional relationship of a human body shoulder part and the massage unit for shoulders in the state which massages a human body shoulder part.
[Explanation of symbols]
    A ... Massage machine
    1. Chair body (massage machine body)
    3 ... Backrest
    7. Air supply / exhaust device
    7a ... Control circuit (control means)
    8 ... Massage device
    10 ... Upper massage body
    10a, 10b ... shoulder massage unit
    12 ... Unit moving mechanism
    21 ... Unit base
    24 ... Switch (shoulder position sensor)
    24b ... Actuator
    25 ... Support shaft
    26 ... Posture change base
    27 ... Hinge plate
    28 ...Air bag for operation
    29 ... Hinge shaft
    30 ... Tilting plate
    31 ... Pressing body for treatment (treatment element)
    32 ... Torsion spring (biasing means)
    42. Posture change mechanism
    43 ... Stepping motor (motor)

Claims (1)

A massage machine body having a backrest;
A unit base provided on the backrest portion so as to be vertically movable;
A pair of left and right shoulder massage units arranged side by side in the width direction of the backrest on the front side of the unit base, wherein the posture change base is rotatably supported on the unit base by a support shaft. A tilting plate that is supported on the change base so as to be pivotable in the front-rear direction via a hinge shaft on the front side of the base, a treatment element provided at a free end of the tilt plate, and between the tilt plate and the posture change base An actuating airbag for rotating the tilting plate forward by being disposed and inflated, and an actuator for detecting the rearward rotation of the tilting plate are attached to the posture changing base and mounted on the tilting plate. A shoulder position sensor comprising a switch that is turned on and off based on forward and backward rotation, and an urging means that urges the tilting plate backward without switching the state of the sensor. Said massage unit;
A unit moving mechanism for displacing the massage unit in the vertical direction of the backrest portion via the unit base;
The support shaft is attached to the unit base with a motor, and the treatment element is moved along a locus approximating a body shape curve extending from the neck of the human body leaning on the backrest to the shoulder tip. A posture changing mechanism for moving the posture changing base by rotating around the axis;
Controlling the expansion / contraction of the motor of this posture changing mechanism and the working air bag, inflating and contracting the working air bag at the movement destination of the posture changing base, and controlling the unit moving mechanism, The massage unit is lowered in a posture in which the hinge shaft is positioned downward with respect to the treatment element, and the shoulder position sensor detects the human shoulder position along with the lowering, and then the massage unit is raised by a predetermined distance. Control means for starting the massage on the human shoulder by repeatedly supplying and exhausting air to the working air bag ;
A massage machine characterized by comprising:

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