JP4726153B2 - Chair type massage machine - Google Patents

Description

The present invention relates to a chair-type massage machine provided with a treatment unit for treating a portion of a user's upper arm and shoulder that is seated on a seat .

  In recent years, in a chair type massage machine having a seat portion and a backrest portion, there has been proposed a treatment for pressing the upper body of the user from the side in order to increase the treatment target region (see Patent Documents 1 and 2). ). In this chair type massage machine, a treatment unit that protrudes forward from the left and right sides of the backrest portion is provided, and an air bag that is inflated and contracted by air supply and exhaust is provided at the opposite portion of the left and right treatment units. . The air supplied to and discharged from the air bag is supplied through an air tube arranged from the air supply / exhaust device provided below the seat to the treatment unit.

  By the way, when transporting a large amount of chair-type massage machine as a product, it is better to transport the chair-type massage machine in a state where it is disassembled into several units and assemble it after arriving at the destination. It may be convenient for loading. Also, when delivering to a general household, it is preferable that the product can be disassembled into several units at the time of delivery so that it can pass through the entrance of a room with limited dimensions. And in patent document 1, the structure which made the treatment unit detachable with respect to the backrest part is disclosed (refer FIG. 6 of patent document 1).

  Moreover, in order to treat an appropriate site | part irrespective of the difference in a to-be-treated person's physique, it is preferable that the position adjustment of a treatment unit is possible. From this point of view, Patent Document 1 discloses a configuration in which the position of the treatment unit can be adjusted in the direction along the backrest (see FIG. 6 of Patent Document 1). Is a structure that can swing in the direction in which the left and right treatment units approach (see FIG. 6 of Patent Document 2), a structure that can move in the vertical direction (see FIG. 3 of Patent Document 2), and a structure that can move in the front-rear direction. (See FIG. 4 of Patent Document 2) and the like.

JP-A-2005-192603 JP 2007-313253 A

  However, in the case of the configuration of Patent Document 1, since the left and right treatment units are integrated and are increased in size and weight, the operation of mounting such treatment units on the backrest and the position adjustment thereof are performed. Is not easy. In addition, the configuration for fixing the treatment unit to the backrest is not clearly described (see FIG. 6 of Patent Document 1, paragraphs 0049 to 0051), and there is a contrivance to facilitate mounting work and position adjustment. I can't. On the other hand, in the case of the configuration of Patent Document 2, although the treatment position can be adjusted in each direction, the configuration that can be attached to and detached from the backrest is not disclosed, and the chair type massage machine is transported and delivered. Convenience in is not realized.

  In addition, when transporting and delivering a chair type massage machine, the work can be facilitated by disassembling it into several units as described above, but the seat part and the backrest part are packed for disassembly and assembly. Difficult to carry out at the place or place to deliver. Therefore, although the said patent documents 1, 2 do not suggest at all about such a subject, it is desirable to make it compact while integrating a seat part and a backrest part.

Therefore, the reference invention makes it easy to attach the removable treatment unit to the backrest, adjusts the treatment position to the user with the treatment unit attached, and removes the treatment unit. An object of the present invention is to provide a chair type massage machine that can be made compact in the state. Another object of the present invention is to provide a chair type massage machine that can be made compact by retracting the treatment unit when not in use.

On the other hand, the chair type massage machine according to the present invention is a chair type massage machine provided with a seat part and a backrest part, wherein the backrest part supports the upper body of the user via a cushion, A treatment unit that is attached to a side portion of the back frame and that treats a portion near the upper arm and shoulder of the user from the side and substantially from the front , and the treatment unit is provided on the inner surface of the treatment unit. It has an air bag that expands and contracts by air supply and exhaust as a treatment part, and it can be moved in the front-rear direction while maintaining its inner side facing the center in the left-right direction , and retracted when not in use When it is positioned at the forefront, its inner surface faces the side of the upper half of the user, and when it is positioned at the rear, its inner surface faces the side of the back frame .

Further, when the treatment unit is located at the rearmost position, the treatment unit may be located on the side of the back frame so that the front end of the treatment unit and the front surface of the back frame are substantially flush with each other.

Moreover, the said back frame may be formed with the recessed part depressed in the center side of the left-right direction in the side part.

Here, referring further to the problem to be solved in the chair type massage machine according to another reference invention, in the configuration shown in FIG. 6 of Patent Document 1, the configuration for fixing the treatment unit to the backrest portion is not clearly shown. (See paragraphs 0049 to 0051 of Patent Document 1) When the mechanism for fixing the treatment unit to the backrest and the mechanism for changing the arrangement of the treatment unit relative to the backrest are configured separately, the chair type massage machine It is not preferable because the size is increased. In addition, if the configuration is different, the operation method of each mechanism is also different, which is not preferable in terms of operability for the operator.

  In the configuration shown in FIG. 6 of Patent Document 1, the treatment unit is connected to the backrest part, and the treatment unit side air tube is connected to the backrest part side (supply / exhaust device side) air tube. Although it is not specifically disclosed, there is a demand for a configuration that can easily connect the treatment unit and the backrest and connect the treatment unit and the air supply / exhaust device.

  Furthermore, Patent Document 2 discloses a configuration in which the left and right treatment units can swing in a direction in which they approach each other. However, from the viewpoint of adjusting the positions of the left and right treatment units according to the physique of the user, It is preferable that the units are slidable in directions toward and away from each other, rather than being swingable.

  In view of such circumstances, here, the treatment unit can be attached to and detached from the backrest, and the arrangement can be changed, but the enlargement can be suppressed, and the operability of the attachment and detachment can be improved. An object is to provide a chair type massage machine that can be used. It is another object of the present invention to provide a chair-type massage machine that can easily connect the treatment unit and the backrest and to connect the treatment unit and the air supply / exhaust device. An object of the present invention is to realize a configuration in which the change in the arrangement of the treatment units is due to a sliding operation in the left-right direction.

More specifically, a chair-type massage machine according to another reference invention is provided with a backrest portion that supports the upper body of a user seated on a seat portion from the rear, and a detachable attachment to the backrest portion. A treatment unit that treats a portion of the user's upper arm and shoulder, and a lock mechanism that fixes the treatment unit to the backrest portion, the lock mechanism with respect to the backrest portion of the treatment unit. An operation unit for fixing and releasing is provided. By operating the operation unit, the arrangement of the treatment unit with respect to the backrest portion can be changed in addition to the fixing and releasing.

  By adopting such a configuration, the arrangement of the treatment unit relative to the backrest portion can be changed by the lock mechanism that fixes the treatment unit, so that the chair-type massage machine can be prevented from being enlarged and fixed. And the arrangement change can be performed by the same kind of operation, so that it is easy for the user to operate and excellent in convenience.

  Further, the lock mechanism is provided in the treatment unit together with the operation part and engages with the engagement protrusion that moves forward and backward by operation of the operation part and the engagement protrusion that is provided in the backrest part and advances. The treatment unit is fixed to the backrest by engaging the engagement protrusion with any of the engagement holes, and the engagement protrusion is engaged. The arrangement of the treatment units may be changeable by changing the engaged hole to be combined from one to another. By setting it as such a structure, a treatment unit can be fixed and arrangement | positioning change with a simple structure. Moreover, diversification of the fixing position of the treatment unit can be realized by appropriately setting the number and arrangement of the engaged holes.

  Further, the operation portion has a lever portion that retracts the engagement protrusion by a pulling operation, and is configured such that a direction in which the treatment unit is removed from the backrest portion and a pulling operation direction of the lever portion substantially coincide with each other. May be. By setting it as such a structure, since the removal direction at the time of removing a treatment unit and the operation direction of a lever part correspond substantially, the removal operation | work of a treatment unit can be performed easily.

  Further, the backrest portion is provided with a chamber portion to which air from an air supply / exhaust device is supplied, and the treatment unit has a first air bag that expands and contracts by air supply / discharge, and the first air An air pipe through which air supplied to and discharged from the bag flows, the air pipe being provided so that a longitudinal direction thereof substantially coincides with a removing direction of the treatment unit, and the air pipe is provided in the chamber portion. An opening that is detachably inserted along the longitudinal direction is provided, and the air pipe is inserted into and removed from the chamber portion when the treatment unit is attached to and detached from the backrest portion. It may be. With this configuration, when the treatment unit is connected to the backrest portion, the treatment unit and the air supply / exhaust device can be connected without requiring a separate operation. Assembly to the part can be facilitated.

  Further, the opening is provided with an annular seal member made of a flexible member so as to seal between the outer surface of the inserted air pipe, and the seal member is compared with the outer edge portion and the inner edge portion. The portion between the two may be formed thin. By adopting such a configuration, the thin portion of the seal member is easily bent, and the inner edge portion of the seal member easily follows the movement of the air pipe, so that the airtightness between the outer surface of the air pipe and the inner edge portion of the seal member is ensured. be able to.

  The air pipe is provided so that the longitudinal direction thereof substantially coincides with the left-right direction, and the air pipe is rotatable around the axis while being inserted into the chamber portion. A plurality of air pipes may be arranged in parallel along the axial direction of the air pipe and the concentric direction around the axial center. With this configuration, when the engaged hole with which the engaging protrusion engages is changed among the plurality of engaged holes arranged in the axial direction of the air pipe, the treatment unit is moved in the axial direction. Can be adjusted by sliding along the left and right direction of the chair type massage machine. On the other hand, since the plurality of engaged holes are disposed along the concentric direction around the axis while allowing the air pipe to rotate around the axis, the treatment unit is arranged around the axis of the air pipe. It is also possible to adjust the position by turning.

  The treatment unit is connected to left and right side portions of the backrest portion so as to protrude forward of the backrest portion, and the first air bag has a distal end portion compared to a base portion when air is supplied. Are disposed on the opposing surfaces of the left and right treatment units so that the base portion is closer to the backrest portion than the distal end portion, and the first air bag is inflated. Further, the upper arm and shoulder vicinity of the user may be able to be pressed substantially from the front. By setting it as such a structure, it can press-treat from the front side the site | part of a user's upper arm and shoulder vicinity, or can press-hold. In addition, there is an acupuncture point called “shoulder leopard” at this site, and it can be expected that the effect of improving the numbness from the forearm to the thumb can be expected by stimulating this point.

  Further, in the vicinity of the left and right positions where the treatment unit is attached in the backrest, a second air bag is provided for pressing the left and right portions of the back of the user from the rear, and either And a control unit for controlling supply and discharge of air to and from the first air bag and the second air bag so that one first air bag and the other second air bag are inflated simultaneously. Also good. By adopting such a configuration, for example, by treating the right first air bag and the left second air bag in an inflated state at the same time, treatment is performed so that the upper body of the user is twisted to the right side. On the other hand, when the left side first air bag and the right side second air bag are inflated at the same time, the upper body of the user can be treated to be twisted to the left side.

  Further, in the vicinity of the left and right positions where the treatment unit is attached in the backrest, a second air bag is provided for pressing the left and right portions of the back of the user from the rear, and either You may further provide the control part which controls supply and discharge of the air to the said 1st air bag and the said 2nd air bag so that one 1st air bag and the 2nd air bag may be in the state expanded simultaneously. By setting it as such a structure, it can press-treat or hold | maintain so that the site | part near a user's upper arm and shoulder may be pinched | interposed from a front side and a back side. As described above, there are acupoints called shoulder inner limbs on the front side of this part, and there are acupuncture points called Tenso on the back side of this part. And by stimulating this Tenshu, it can be expected that the numbness from the shoulder to the upper arm can be improved.

According to the reference invention , it is easy to attach the removable treatment unit to the backrest, the treatment position to the user can be adjusted with the treatment unit attached, and the treatment unit can be removed. In this state, a chair type massage machine that can be made compact can be realized. Further, according to the present invention, it is possible to realize a chair type massage machine that can be made compact by retracting the treatment unit when not in use.

It is a perspective view which shows the whole structure of the chair type massage machine which concerns on Embodiment 1. FIG. It is a functional block diagram of the chair type massage machine shown in FIG. It is a perspective view for showing composition of a treatment unit, and shows the state where a backrest part and a right and left treatment unit were separated. It is a perspective view showing a configuration when the treatment unit on the left side is viewed obliquely from the front, showing the state where the treatment unit is separated from the base block on the upper side and the state where both are connected on the lower side, respectively. Yes. It is a perspective view showing a configuration when the treatment unit on the left side is viewed obliquely from the rear, showing the state where the treatment unit is separated from the base block on the upper side and the state where both are connected on the lower side, respectively. Yes. It is a perspective view which shows the detail of a locking mechanism. It is a perspective view of the treatment unit on the left side, and is a drawing for explaining a mechanism for moving the treatment part in the left-right direction. It is a perspective view of the treatment unit in a state where the main body casing is removed, and is a drawing for explaining a position adjustment mechanism that makes the treatment part movable in the vertical direction. It is an exploded view of the treatment unit shown in FIG. It is a perspective view which shows the whole structure which concerns on Embodiment 2 of a chair type massage machine. It is a perspective view which shows the whole structure of the chair type massage machine seen from the direction different from FIG. It is a perspective view for showing composition of a treatment unit, and shows a state where a backrest part and a left treatment unit were separated. It is a perspective view which shows the external appearance structure of the treatment unit shown in FIG. It is an external appearance perspective view which shows the structure of the movable unit which a lock mechanism has. It is a disassembled perspective view of the movable unit shown in FIG. It is an external appearance perspective view of a treatment unit, and has shown the inside of a main part casing by removing an outside cover from a unit main part. It is an external appearance perspective view which shows the structure of the fixing unit which a lock mechanism has, (a) shows the external appearance when it sees from a certain direction, (b) has shown the external appearance when it sees from another direction. It is a disassembled perspective view of the fixing unit shown in FIG. It is drawing which shows the process of inserting / removing a movable unit with respect to a fixed unit. It is drawing which shows the position adjustment operation | movement of the up-down direction of a treatment unit, (a) shows the state which the air bag attachment surface of a unit main body is located relatively downward, (b) shows the state located upwards Yes. It is a schematic diagram which shows the state which looked down at the treatment person sitting on the chair type massage machine from the upper part in order to explain treatment operation using a treatment unit, and (a) is a state where pinching massage is performed, (b ) Shows how to perform a torsional massage. In order to explain the treatment operation using the treatment unit, it is a schematic view showing a chair type massage machine in which the backrest portion is tilted backward and reclined, and (a) twists and treats the upper body and the lower body in the same direction. (B) shows the operation when the upper body and the lower body are twisted in the opposite directions for treatment. It is a typical front view which shows the Embodiment 3 of a chair type massage machine, and has shown only the back frame and the treatment unit. It is a top view of the chair type massage machine shown in FIG. It is a typical top view which shows the force which acts on a treatment unit and a back frame when an air bag is inflated. It is a typical front view which shows the structure which concerns on Embodiment 4 of a chair type massage machine, and has shown only the back frame and the treatment unit. It is a top view of the chair type massage machine shown in FIG. It is a typical front view which shows the structure which concerns on Embodiment 5 of a chair type massage machine, and has shown only the back frame and the treatment unit. It is a top view of the chair type massage machine shown in FIG. It is a typical perspective view which shows the structure of the right treatment unit, (a) shows the posture when treating the vicinity of the upper arm and shoulder from the rear, and (b) shows the posture when treating from the side. .

Hereinafter, a chair type massage machine according to embodiments of the present invention and reference invention will be described in detail with reference to the drawings.

(Embodiment 1)
[Overall configuration of chair type massage machine]
FIG. 1 is a perspective view showing the overall configuration of the chair type massage machine. As shown in FIG. 1, a chair type massage machine 1 according to the first embodiment supports a seat 2 on which a user is seated, a backrest 3 that supports the upper body of the user, and a leg. It is mainly composed of a footrest 4 and an armrest (armrest portion) 5 that supports the arm portion. In addition, the concept of the direction used by the following description shall correspond with the concept of the direction when it sees from the user seated on the seat part 2, and shall be suitably demonstrated in other cases.

  The seat portion 2 is provided with a frame structure (not shown) on the grounded base 2a, and a seat surface portion 2c formed so as to be substantially flat so that the upper surface is used as the seat surface 2b is arranged on the upper portion of the frame structure. It has a configuration. Moreover, the seat surface 2b forms an inclined surface so that the front part is located above the rear part, and the seated user's buttocks and thighs are supported from below.

  In front of the seat portion 2, a footrest 4 for treating the sole, ankle, and calf of the user is disposed. The footrest 4 is connected to the back part 4a located on the back side of the lower leg and the left and right side parts of the back part 4a in order to support the lower leg (that is, the part from the knee to the ankle) of the legs of the user. The outer side surface portion 4b is located on the outer side of the left and right lower legs, and a partition portion 4c that partitions the left and right lower legs is provided between the left and right outer surface portions 4b and 4b. Further, a flat foot support portion 4d is connected to the lower portion of the back surface portion 4a, the outer surface portion 4b, and the partition portion 4c so as to support the foot of the user. With such a footrest 4, the left and right lower legs of the user are supported from the rear and the left and right sides, and the soles are also supported from below. Further, the footrest 4 can be vertically divided into an upper footrest 4e and a lower footrest 4f including a sole support portion 4d so that the upper footrest 4e and the lower footrest 4f can be relatively close to and separated from each other. It has become.

  On both sides of the seat 2, armrests 5 that are fixedly supported by the base 2 a of the seat 2 are provided. The armrest 5 extends from the rear position to the vicinity of the front end position of the seat portion 2 from the rear end of the seat portion 2 on both sides of the seat portion 2. Further, the upper surface of the armrest 5 forms a rearward inclined surface 5a that descends as the rear half part moves backward, and a forward inclined surface 5b that lowers as the front half part moves forward. The forearm can be placed on the rear inclined surface 5a or the front inclined surface 5b and used as an elbow rest. The inner side surfaces 5c of the left and right armrests 5 (that is, the surfaces facing each other) are substantially parallel to each other along the front-rear direction when viewed in plan, and are substantially the same as the width of the seating surface 2b. Opposite the same dimension D1 apart. Further, a hand treatment machine 6 is provided on the outer surface of the armrest 5. The hand treatment machine 6 has a substantially cylindrical shape so that a seated user can insert his / her hand from the rear, and an air bag 9 (see FIG. 2) provided inside as will be described later. Can be pressed against the hand and wrist.

  Behind the seat 2 is a backrest 3 that supports the upper body of the user. The backrest 3 is sized so that when an adult male having a general physique sits on the chair-type massage machine 1, a part of the adult male's body does not protrude outside. It is almost rectangular. More specifically, the width dimension D2 of the backrest part 3 is set to be substantially the same as or slightly smaller than the separation dimension D1 of the inner side surfaces 5c, 5c of the armrest 5. On the left and right sides of the backrest 3, a treatment unit 7 </ b> A for treating the upper arm and the vicinity of the shoulder of the user is provided. The treatment unit 7A is detachably connected to a position slightly higher than the central position in the longitudinal direction (vertical direction in FIG. 1) of the backrest portion 3, and the front surface of the backrest portion 3 that comes into contact with the back of the upper body It protrudes further forward than 3a. The treatment unit 7A will be described in detail later.

  FIG. 2 is a functional block diagram of the chair type massage machine 1 as described above. As shown in FIG. 2, the chair-type massage machine 1 includes a control unit 10 mounted on the lower portion of the seat 2, and the control unit 10 includes a pump and an electromagnetic valve via a drive unit 11. An air supply / exhaust device 15 is connected, and a plurality of air bags 9 are connected to the air supply / exhaust device 15 via air tubes. Each air bag 9 is inflated and deflated when the drive unit 11 drives the air supply / exhaust device 15 in accordance with an instruction from the control unit 10.

  These air bags 9 are provided at various locations on the chair type massage machine 1. More specifically, in the seat portion 2, a total of four air bags 9 are provided in the front left and right portions and the rear left and right portions of the seat surface portion 2 c, and are inflated and contracted, so that the seated user A pressure stimulus can be applied to the right and left of the buttocks and each thigh.

  Moreover, in the footrest 4, the air bag 9 is arrange | positioned at each place of the back surface part 4a, the outer surface part 4b, the partition part 4c, and the sole instruction | indication part 4d. And depending on the air bag 9 provided in the upper footrest 4e, it can be pressed or supported so as to be sandwiched from the side with respect to the left and right lower legs, and a pressure stimulus can be applied to the calf from the back side. Further, depending on the lower footrest 4f, it is possible to perform pressure treatment or support so as to sandwich the ankle from the side, it is possible to apply a pressure stimulus to the ankle from the rear, and a pressure stimulus to the sole from the lower side. be able to.

  Two air bags 9 are provided in the hand treatment machine 6 provided on the side of the armrest 5, and by expanding and contracting, the palm of the user's wrist inserted into the hand treatment machine 6 is placed on the palm. The part that follows the part and the part that follows the back of the hand can be pressed.

  In the backrest 3, air bags 9 are disposed in the lower left and right portions and in the vicinity of the attachment location of the treatment unit 7 </ b> A for treating the vicinity of the upper arm and shoulder (see also FIG. 3). The air bags 9 provided on the left and right sides of the lower side can apply a pressure stimulus from the back side to the left and right parts of the waist of the user by expanding and contracting. Moreover, the air bag 9 provided in the vicinity of the attachment location of the treatment unit 7A can give a pressing stimulus to the vicinity of the scapula of the user by inflating and contracting.

  Further, air bags 9 are also disposed in the left and right treatment units 7A. Although these air bags 9 will be described later, these air bags 9 can press and support the vicinity of the upper arm and the shoulder from the side and from the front by expanding and contracting.

  Further, as shown in FIG. 2, linear motion actuators 16 and 17 are connected to the control unit 10 via a drive unit 12. These direct acting actuators 16 and 17 are housed in the seat portion 2, and one of the direct acting actuators 16 is expanded and contracted by the drive portion 12 based on an instruction from the control portion 10, and the backrest portion 3. Can be tilted. More specifically, the lower part of the backrest part 3 is pivotally supported in the vicinity of the rear part of the seat part 2, and the linear motion actuator 16 expands and contracts to move in the front-rear direction around the pivotal part. 1 can be swung from the standing state shown in FIG. 1 until the front surface 3a of the backrest part 3 is substantially parallel to the grounding surface of the chair type massage machine 1, and is fitted between the left and right armrests 5 and 5. Therefore, the front surface 3a of the backrest portion 3 can be tilted forward to such an extent that the seat surface 2a of the seat portion 2 is in contact with or thinned. When the backrest 3 is moved forward between the left and right armrests 5, 5, instead of using the direct acting actuator 16 as described above, the backrest 3 and the direct acting actuator 16 By releasing the connection, the backrest 3 may be manually moved forward.

  The other direct acting actuator 17 can also be expanded and contracted by the drive unit 12 based on an instruction from the control unit 10 to swing the footrest 4. More specifically, the upper portion of the footrest 4 is pivotally supported in the vicinity of the front portion of the seat portion 2, and the linear motion actuator 17 expands and contracts, so that the pivotal portion is centered in FIG. The backrest 4a of the footrest 4 can be swung back and forth in the range from the hanging state shown to the raised state in which the back surface portion 4a of the footrest 4 is substantially parallel to the ground contact surface. A number of known techniques have already been disclosed for the tilting operation of the backrest 3 and the swinging operation of the footrest 4 by the above-described direct acting actuators 16 and 17, and the chair type massage machine according to the present embodiment. These known techniques can also be adopted in 1.

  In addition, the control unit 10 is connected to an extension / contraction mechanism 18 built in the footrest 4 via the drive unit 13. The telescopic mechanism 18 includes a motor, a rack and a pinion (not shown), or a motor and a pantograph mechanism. Then, the drive unit 13 expands and contracts based on an instruction from the control unit 10, and the relative positions of the upper footrest 4e and the lower footrest 4f are separated from each other by a predetermined distance from the close state shown in FIG. It can be changed in the range up to the separation state. Regarding the configuration and operation of such a telescopic mechanism 18, known techniques have already been disclosed, and these known techniques can also be adopted in the chair type massage machine 1 according to the present embodiment.

  In addition, a mechanical back treatment machine 19 is connected to the control unit 10 via a drive unit 14. This back treatment machine 19 is housed in the central portion of the backrest portion 3 in the left-right direction, and a treatment element is attached to the front ends of the left and right arms extending toward the front side of the backrest portion 3. ing. And it drives by the drive part 14 based on the instruction | indication from the control part 10, operates a right and left treatment element in three dimensions, and gives a massage massage, a hit massage, and an acupressure massage with respect to a back part of a user. be able to. Furthermore, an actuator (not shown) stored in the backrest 3 can be moved up and down along the backrest 3, and the various massage positions described above can be adjusted in the range from the waist to the shoulder. By rolling up and down in a state of protruding forward, a rolling massage can be applied to the back of the user. In addition, also about the structure and operation | movement of such a back treatment machine 19, a well-known technique is already disclosed, and also in the chair type massage machine 1 which concerns on this Embodiment, these well-known techniques are employable. it can.

  Furthermore, the controller 10 is connected to an operating device 20 operated by the user. In addition to the power switch for activating the chair type massage machine 1, the operation device 20 is provided with a plurality of switches for selecting and determining the various operations described above. The chair-type massage machine 1 can be made to perform the selected operation | movement by operating.

[Composition of treatment unit]
Next, a treatment unit 7A that treats the upper arm and shoulders connected to the backrest 3 as a treatment target will be described. FIG. 3 is a perspective view showing the configuration of the treatment unit 7A, and shows a state where the backrest 3 and the left and right treatment units 7A are separated. As shown in FIG. 3, the backrest portion 3 has a back frame 3 that is a resin molded product having a substantially rectangular frame shape. The backrest portion 3 shown in FIG. 1 is the front surface of the back frame 3b. The rectangular back cushion 3c is arranged on the top (see the two-dot chain line shown in FIG. 1). In addition, the back treatment machine 19 mentioned above is arrange | positioned in the opening 3d of the center part which the back frame 3b has.

  The front surface of the left and right portions of the back frame 3b is formed with a recessed portion 3e that is recessed rearward. The treatment unit 7A is attached to the back frame 3b via a base block (unit connecting portion) 101 attached to the recessed portion 3e. On the other hand, it is detachably mounted. In FIG. 3, the right base block 101 is shown separated from the back frame 3b, and the left base block 101 is shown attached to the back frame 3b.

  FIG. 4 is a perspective view showing a configuration when the left treatment unit 7A is viewed obliquely from the front, and FIG. 5 is a perspective view showing a configuration when the left treatment unit 7A is viewed from the oblique rear. 4 and 5, the state where the treatment unit 7A is separated from the base block 101 is shown on the upper side, and the state where both are connected is shown on the lower side.

  As shown in FIGS. 4 and 5, the treatment unit 7 </ b> A closes the outer cover 103 with side walls erected so as to circulate along the peripheral edge of the trapezoidal bottom plate, and the opening of the outer cover 103. A main body casing (base portion) 102 composed of an inner cover 104 is provided, and the main body casing 102 is configured such that the inner cover 104 is positioned on the center side in the left-right direction with respect to the outer cover 103. The main body casing 102 has a vertical dimension that decreases from the rear base toward the front tip, and has a trapezoidal shape in side view. A joint base 105 that can be connected is attached.

  The joint base 105 has a vertically long rectangular parallelepiped shape with a small thickness in the front-rear direction, and the vertical dimension is slightly smaller than the vertical dimension of the base portion of the main body casing 102. The base block 101 also has the same external dimensions as the joint base 105, and has a rectangular parallelepiped shape that is vertically long and has a small thickness dimension in the front-rear direction. The connection surfaces 101a and 105a, which are the opposing surfaces of the base block 101 and the joint base 105, are both substantially flat surfaces. When the joint base 105 is connected to the base block 101, both connection surfaces 101a and 105a are connected. Are in close contact.

  By the way, the chair type massage machine 1 according to the present embodiment is provided with a lock mechanism 110 for detachably connecting the treatment unit 7A to the backrest 3 (see the lower diagram of FIG. 5). The lock mechanism 110 includes a guide pin (support protrusion) 111 and a release lever (operation part) 112 provided on the joint base 105 of the treatment unit 7A, and a lock arm (locking part) 113 provided on the base block 101. And is composed mainly of. Next, the lock mechanism 110 will be described in detail with reference to FIG. 6 which is a perspective view showing details of the lock mechanism 110.

[Lock mechanism]
As shown in FIGS. 4 and 5, a round bar-shaped guide pin 111 protrudes from the connection surface 105 a of the joint base 105 toward the base block 101 (that is, inward in the left-right direction). Yes. As shown in FIG. 6, the guide pin 111 has a tapered shape so that the diameter of the cross section is slightly reduced from the vicinity of the center in the longitudinal direction toward the tip. The recess 111a is formed. A release lever 112 is accommodated in the joint base 105 and behind the guide pin 111.

  As shown in FIG. 6, the release lever 112 is composed of a rod-like body extending along the left-right direction, and the tip portion thereof forms a lever side connection portion 112 a connected to the lock arm 113. The tip of the lever side connecting portion 112a is formed in an arc shape in plan view. In addition, a trapezoidal operation protrusion 112b that protrudes rearward is provided in the vicinity of the tip of the release lever 112. In such a state that the release lever 112 is housed in the joint base 105, the lever side connection portion 112a is exposed from the opening 105b formed in the connection surface 105a (see FIG. 4), and the rear surface of the joint base 105 The operation projection 112b is exposed from the operation window 105c formed substantially at the center (see FIG. 5). Strictly speaking, the lever side connection portion 112a of the release lever 112 is in a state of slightly protruding from the opening 105b of the connection surface 105a.

  The release lever 112 housed in the joint base 105 has a base 112c pivotally supported by the joint base 105, and is further forward of the release lever 112 at a position corresponding to the operation projection 112b. It is urged rearward by a compression spring 114 as an urging means arranged. Accordingly, the lever-side connecting portion 112a at the tip can be swung forward by pressing the operation projection 112b forward with the fingertip through the operation window 105c. When the fingertip is removed from the operation projection 112b, the lever is compressed by the compression spring 114. The side connection portion 112a is returned to the rear.

  On the other hand, as shown in FIG. 5, an accommodation groove 101b that is recessed forward and extends in the left-right direction is formed in the rear portion of the base block 101, and the lock arm 113 is accommodated in the accommodation groove 101b. As shown in FIG. 6, the lock arm 113 is composed of a rod-like body extending along the left-right direction, and an arm-side connection portion 113a that engages with the lever-side connection portion 112a is provided at the base end portion thereof. Yes. The arm-side connecting portion 113a has a bifurcated shape that branches forward and backward, and the lever-side connecting portion 112a can be fitted in a recess formed therebetween. A locking claw 113b that is bent forward and forms a key claw is formed at the tip of the lock arm 113. The locking claw 113b is a recess 111a formed near the tip of the guide pin 111. Can be engaged.

  Such a lock arm 113 is accommodated in the accommodation groove 101b such that the arm side connection portion 113a is exposed from the opening 101c formed in the connection surface 101a of the base block 101. Here, in the present embodiment, the arm-side connection portion 113a of the lock arm 113 is located inward of the opening 101c with respect to the connection surface 101a of the base block 101, and protrudes outward from the connection surface 101a. It is supposed not to. The lock arm 113 is pivotally supported at a substantially central portion in the longitudinal direction while being accommodated in the accommodation groove 101b, and the arm side connection portion 113a and the locking claw 113b can swing back and forth in opposite directions. Yes.

  Further, the base block 101 is formed with an insertion hole 101d that opens in front of the opening 101c on the connection surface 101a. The insertion hole 101d is formed in parallel with the housing groove 101b, and the guide pin 111 is inserted into the insertion hole 101d when connected to the treatment unit 7A. Further, a communication hole (not shown) that communicates with the inner portion of the insertion hole 101d is formed in the inner portion of the housing groove 101b in the left-right direction, and the engaging claw 113b of the lock arm 113 is connected to the communication groove 101b. It is possible to advance and retract with respect to the inner part of the insertion hole 101d through the hole.

  Next, attachment / detachment of the treatment unit 7A and the base block 101 will be described. When the treatment unit 7A is moved closer to the base block 101, the guide pin 111 is inserted into the insertion hole 101d of the base block 101, and the connection surface 105a of the joint base 105 and the connection surface 101a of the base block 101 come into contact with each other. . At this time, the lever side connection portion 112a of the release lever 112 slightly protruding from the connection surface 105a engages with the arm side connection portion 113a of the lock arm 113 so as to be fitted inside. Here, the release lever 112 is urged by a compression spring 114 (see FIG. 6), and the lever side connection portion 112a is located rearward in a state where no external force is applied. Is also located relatively rearward, and the locking claw 113b is located forward. Therefore, the locking claw 113b enters from the receiving groove 101b to the inner part of the insertion hole 101d and engages with the recess 111a formed on the guide pin 111 located here. As a result, the guide pin 111 is locked by the locking claw 113b, and the treatment unit 7A is fixed (locked) while being connected to the base block 101.

  On the other hand, when the treatment unit 7A is fixed to the base block 101, when the operation protrusion 112b of the release lever 112 is pressed forward through the operation window 105c, the release lever 112 swings forward against the urging force of the compression spring 114. Moved. As a result, the arm side connecting portion 113a moves forward together with the lever side connecting portion 112a, and accordingly, the locking claw 113b moves backward and comes out of the recess 111a. As a result, since the fixed state (locking state) of the guide pin 111 is released, the treatment unit 7A can be detached outward in the left-right direction.

  Thus, in the chair type massage machine 1 according to the present embodiment, the treatment unit 7A can be simply connected and fixed to the backrest part 3 via the base block 101 only by pressing the treatment unit 7A against the base block 101. In addition, since the fixation can be released simply by pressing the operation projection 112b when removing the treatment unit 7A, the treatment unit 7A can be removably attached and detached easily. Further, since the treatment unit 7A is configured as a separate body on the left and right sides, such attachment / detachment work can be individually performed on the left and right treatment units 7A to facilitate the work, and each treatment unit 7A can also be reduced in size. This facilitates transportation.

  Further, in a state where the treatment unit 7A is removed, the connection surface 101a of the base block 101 is flat, and no outward projection is formed on the connection surface 101a. Therefore, since the width direction dimension D2 (see FIG. 1) of the backrest 3 when the treatment unit 7A is removed can be reduced, the backrest 3 is moved forward until it is fitted between the left and right armrests 5 and 5. The chair-type massage machine 1 can be transported in a compacted state. Note that, here, the width direction dimension D2 (see FIG. 1) of the backrest 3 is more accurately the left and right base blocks 101 attached to the back frame 3b. This means the distance between the connection surfaces 101a of the base block 101.

[Treatment Department]
As shown in FIG. 3, the treatment unit 7 </ b> A described above is provided with a treatment unit 120 that is inflated and contracted by air supply / exhaust and that can press and treat the upper arm and shoulder portions of the user. The treatment unit 120 is movable in the left-right direction and the up-down direction in a state where the treatment unit 7A is fixed to the backrest unit 3. Hereinafter, the treatment unit 120 will be described.

  FIG. 7 is a perspective view of the left treatment unit 7A for explaining a mechanism for moving the treatment unit 120 in the left-right direction. The treatment unit 120 includes a movable plate 121 having a flat plate shape and a rotation base 122 that supports the movable plate 121 on the inner cover 104.

  The rotation base 122 is disposed at the front position of the joint base 105 in the vicinity of the base portion of the inner cover 104. As will be described in detail later, the rotation base 122 rotates within a predetermined angle range about a left-right axis with respect to the inner cover 104. It is attached as possible. The rotation base 122 includes a plate support portion 123 having a vertically long box shape having an inward opening 123a in the left-right direction. A slit 123b that extends in the left-right direction and communicates with the opening 123a at one end is formed in the upper and lower portions of the front wall portion of the plate support portion 123, and the opening 123a is formed in the front wall portion between the upper and lower slits 123b. A notch part 123c leading to is formed.

  On the other hand, like the main body casing 102, the movable plate 121 has a substantially trapezoidal shape with a vertical dimension that decreases from the rear base portion toward the front tip portion. A connection base 125 is formed to be connected to. The connection base 125 includes a vertically extending rectangular plate 125 a extending further rearward from the base of the movable plate 121, an end plate 125 b erected on the upper end and the lower end of the extending plate 125 a, And a folded plate 125c formed by folding back from the rear end of the extended plate 125a. Of these, the upper and lower end plates 125b are disposed to face each other with a distance substantially the same as the distance between the upper and lower slits 123b of the plate support 123. From the upper and lower ends of the extension plate 125a, It extends inward and backward in the direction.

  Such a movable plate 121 is connected to the plate support part 123 so that the rear part of the upper and lower end plates 125b is inserted into the upper and lower slits 123b. Further, a round bar-like support pin 126 extending in the vertical direction is screwed in the plate support portion 123, and the rear portion of the upper and lower end plates 125b is pivotally supported by the upper end and the lower end of the support pin 126. . Further, a torsion spring (torsion spring) 127 is wound around the support pin 126. The torsion spring 127 has one hook 127a supported by the rear wall portion of the plate support portion 123, and the other hook 127b is connected to the extended plate 125a and the folded plate 125c of the movable plate 121 through the notch portion 123c. The movable plate 121 is supported in the middle and urges the movable plate 121 outward in the left-right direction. Accordingly, the movable plate 121 has a front end portion (front end portion) that can swing left and right around the support pin 126 and is urged toward the outside approaching the inner cover 104.

  FIG. 8 is a perspective view of the treatment unit 7A with the main body casing 102 removed, and is a view for explaining a position adjustment mechanism that makes the treatment unit 120 movable in the vertical direction. FIG. 9 is an exploded view of the treatment unit 7A shown in FIG. As shown in FIG. 9, a base support column 130 having a columnar shape with an axial center directed substantially in the left-right direction is provided on the outer portion of the rotation base 122 in the left-right direction. That is, the rotation base 122 is configured by connecting the plate support portion 123 that is in the box shape and positioned relatively inward, and the base support column 130 that is positioned relatively outward. . A rotating shaft 131 protrudes from the outer surface of the base support column 130 so that the axes coincide with each other, and two guide protrusions 132 protrude from the rotating shaft 131.

  In the vicinity of the base portion of the inner cover 104, a shaft hole 104a through which the rotary shaft 131 is inserted and two guide holes 104b through which the guide protrusions 132 are inserted are formed. The guide hole 104b is centered on the shaft hole 104a. It is an arc-shaped long hole. Therefore, when the rotation shaft 131 and the guide protrusion 132 are inserted into the shaft hole 104a and the guide hole 104b, respectively, and the rotation base 122 is attached to the inner cover 104 from the inside, the guide protrusion 132 of the rotation base 122 is guided by the guide hole 104a. It is possible to rotate around the rotation shaft 131 within a movable range. When the rotation base 122 is attached to the inner cover 104, both the rotation shaft 131 and the guide protrusion 132 protrude from the outer surface of the inner cover 104.

  The two guide protrusions 132 protruding from the outer surface of the inner cover 104 are covered with a protrusion cap 133. The projecting cap 133 is composed of two cylindrical housing parts 133a whose one end directed inward is open, and a connection plate 133b that connects one ends of the cylindrical housing parts 133a. Among these, the cylindrical housing portion 133a is configured such that the guide projection 132 is inserted through the opening, and a through hole 133c is formed in the center portion of the connection plate 133b. Then, when the two cylindrical protrusions 133 protruding from the inner cover 104 are put on the two cylindrical housing parts 133a of the protrusion cap 133, the rotary shaft 131 is inserted into the through hole 133c in the central part.

  In addition, a rectangular spring pressing plate 136 is assembled to the protrusion cap 133 via a compression coil spring 135 that is fitted around each of the two cylindrical housing portions 133a. The spring retainer plate 136 is formed with through holes 136a through which both ends of the cylindrical accommodating portion 133a can be inserted, and further, a small diameter through hole 136b is formed at the center.

  The assembly procedure of such a position adjusting mechanism will be described. As shown in FIG. 9, the inner cover 104 is assembled from the outside to the base support column 130 of the rotation base 122. At this time, the rotating shaft 131 and the guide protrusion 132 protrude outward from the shaft hole 104 a and the guide hole 104 b of the inner cover 104. Next, the projecting cap 133 is assembled from the outside so as to cover the cylindrical housing portion 133a with respect to the two protruding guide holes 104b, so that the inner cover 104 is sandwiched from the left and right by the rotation base 122 and the projecting cap 133. It is in a state. Then, the spring holding plate 136 is assembled from the outside so that the compression coil spring 135 is externally fitted to each cylindrical accommodating portion 133a, and further, the cylindrical accommodating portion 133a is inserted into the through hole 136a. At this time, the rotary shaft 131 is inserted into the through hole 136b in the center portion of the spring pressing plate 136, and the tip of the rotating shaft 131 protrudes outward of the spring pressing plate 136. A screw thread is formed on the outer periphery of the tip portion, and finally, a nut 137 is screwed here through a washer to complete assembly of the position adjusting mechanism (see FIG. 8). As shown in FIG. 9, another through hole 138 is formed in the base portion of the inner cover 104, and a bolt 139 a protruding from the outer end surface of the joint base 105 is inserted to screw a nut 139 b. Thus, the inner cover 104 and the joint base 105 are connected.

  In the position adjustment mechanism assembled in this way, the force to be extended by the compression coil spring 135 is transmitted to the rotation base 122 via the spring pressing plate 136 and the rotation shaft 131, and the rotation base 122 is moved outward. That is, the bias is applied in the direction approaching the inner cover 104. By this urging force, a static frictional force is generated on the contact surface between the base support column 130 of the rotary base 122 and the inner cover 104, and the relative posture of the rotary base 122 with respect to the inner cover 104 is maintained. On the other hand, when the rotation base 122 is rotated around the rotation shaft 131 against the static friction force by applying external force manually, the rotation within the movable range of the guide protrusion 132 is enabled. When the external force is removed, the posture after the rotation can be maintained again by the static friction force.

[Air piping]
By the way, the movable base 121 is supported by the rotation base 122 that can be rotated by the position adjusting mechanism so as to be able to swing left and right as described above. As shown in FIG. 7, air bags 9 are provided between the movable plate 121 and the inner cover 104 and on the surface of the movable plate 121 (ie, the surface directed inward in the left-right direction). The air bag 9 is supplied with air through a pipe from an air supply / exhaust device 15 (see FIG. 2) provided at the lower portion of the seat portion 2 of the chair type massage machine 1.

  This piping will be specifically described. First, as shown in FIG. 3, a piping hole 201 penetrating in the front-rear direction is formed in the recess 3e of the back frame 3b, and a flexible air tube is formed through the piping hole 201. Is to be pulled out. In each drawing referred to in the following description of piping, a flow path of air supplied through an air tube is schematically indicated by a broken line 200.

  Next, as shown in FIG. 5, a tubular connection pipe 202 protrudes from the rear wall surface of the base block 101 attached to the backrest 3, and the air tube drawn out from the piping hole 201 is connected to the connection pipe 202. Connected. A concave portion 101e that is recessed inward in the left-right direction is formed at a position above the insertion hole 101d in the connection surface 101a of the base block 101, and a socket hole 203 is formed on the bottom surface of the concave portion 101e. In the base block 101, piping (not shown) whose one end communicates with the connection pipe 202 is laid, and the other end communicates with the socket hole 203. In addition, an o-ring (not shown) is fitted into the recess 101e together with the pressing plate 140, and a through hole 140a and an o-ring hole formed in the pressing plate 140 communicate with the socket hole 203.

  As shown in FIG. 4, a tubular plug 204 projects from the connection surface 105 a of the joint base 105 of the treatment unit 7 </ b> A at a position corresponding to the socket hole 203. Therefore, by connecting the joint base 105 to the base block 101, the plug 204 is inserted into the socket hole 203 and communicates with each other. The inner diameter of the O-ring described above is slightly smaller than the outer diameter of the plug 204, and the socket hole 203 and the plug 204 are hermetically connected.

  Next, as shown in FIG. 9, a tubular plug 205 protrudes from the outer end surface of the joint base 105, and the plug 204 provided on the connection surface 105a and the plug 205 are communicated with each other. A pipe (not shown) is laid in the base 105. The inner cover 104 connected to the outer end face of the joint base 105 is formed with a through hole 104d at a position corresponding to the plug 205. When the joint base 105 and the inner cover 104 are connected, the plug is passed through the through hole 104d. 205 protrudes into the main casing 102 (see FIG. 4). The plug 205 is connected to one end of an air hose.

  Through holes 104e and 104f are formed in the vicinity of the front end portion and the central portion of the inner cover 104, and the air hose having one end connected to the plug 205 is branched in the main body casing 102, and one is a through hole on the front end side. Through 104e, the other is extended to the surface side of the inner cover 104 through the through hole 104f in the central portion. The air hose extended from the through hole 104e is connected to the air bag 9 (see FIG. 7) disposed between the inner cover 104 and the movable plate 121, and the air hose extended from the through hole 104f is Then, it is pulled out through a through hole 121 a formed near the tip of the movable plate 121 and connected to the air bag 9 (see FIG. 7) disposed on the surface side of the movable plate 121.

  As shown in FIG. 9, the back surface side of the movable plate 121 (ie, between the air bag 9 and the movable plate 121 disposed between the movable plate 121 and the inner cover 104) is made of urethane or the like. Spacers 141 are disposed (see also FIG. 7). The spacer 141 has substantially the same trapezoid shape as the movable plate 121 and has a predetermined thickness dimension, and a piping slit 141a extending in the front-rear direction is formed in the center portion. An air hose extending from the through hole 104f of the inner cover 104 to the through hole 121a of the movable plate 121 is embedded in the piping slit 141a.

  With such a configuration, when air is supplied from the air supply / exhaust device 15 with the treatment unit 7 </ b> A attached to the backrest 3, the air hose extends from the main body casing 102 via the piping in the base block 101 and the joint base 105. Through the air bag 9 between the inner cover 104 and the movable plate 121 and the air bag 9 disposed on the surface side of the movable plate 121. Then, as the air bag 9 between the inner cover 104 and the movable plate 121 expands and contracts, the movable plate 121 swings left and right around the support pin 126 (see FIG. 7), and the surface of the movable plate 121 When the air bag 9 disposed on the side expands and contracts, the pressing force to the vicinity of the upper arm and shoulder of the user is changed. Further, by rotating the movable plate 121 around the rotation shaft 131, the vertical position of the treatment unit 120 can be adjusted, and the pressing position to the user can be changed.

(Embodiment 2)
Next, the structure which concerns on Embodiment 2 of the chair type massage machine 1 is demonstrated.

[Overall configuration of chair type massage machine]
10 is a perspective view showing an overall configuration according to Embodiment 2 of the chair-type massage machine, and FIG. 11 is a perspective view showing an overall configuration of the chair-type massage machine viewed from a direction different from FIG. is there. As shown in FIGS. 10 and 11, the chair-type massage machine 1 according to the present embodiment includes a seat portion 2 on which a user is seated, a backrest portion 3 that supports the upper body of the user, and legs. It is mainly comprised from the footrest 4 which supports, and the armrest (armrest part) 5 which supports an arm part.

  In addition, the whole structure of the chair type massage machine 1 which concerns on this Embodiment 2 is the same as that of the chair type massage machine 1 which concerns on Embodiment 1 already demonstrated except the treatment unit 7B. . Therefore, in the chair type massage machine 1 according to the second embodiment, the same reference numerals are given to the parts corresponding to the chair type massage machine 1 according to the first embodiment and having the same configuration. Detailed description thereof is omitted here. Further, the chair type massage machine 1 according to the second embodiment also has a configuration / function as shown in the block diagram of FIG. 2, and the air bag 9 also has the chair type massage machine 1 according to the first embodiment. It is provided in the same place.

[Composition of treatment unit]
Next, the treatment unit 7B that treats the upper arm and the shoulder connected to the backrest 3 as a treatment target will be described. FIG. 12 is a perspective view showing the configuration of the treatment unit 7B, and shows a state where the backrest 3 and the left treatment unit 7B are separated. Although the right treatment unit 7B is omitted, the two treatment units 7B have a symmetrical configuration, and the left treatment unit 7B will be described below. FIG. 13 is a perspective view showing an external configuration of the treatment unit 7B.

  As shown in FIG. 12, the backrest 3 has a substantially rectangular frame-shaped back frame 3b, and the backrest 3 shown in FIG. 10 has a rectangular back cushion 3c on the front surface of the back frame 3b. Is arranged. In addition, the back treatment machine 19 mentioned above is arrange | positioned in the opening 3d of the center part which the back frame 3b has.

  The treatment unit 7B includes a unit main body 30 having an air bag 9, and a lock mechanism 31 that detachably connects and fixes the unit main body 30 to the back frame 3b. 30 includes a movable unit 32 provided on the back frame 3 and a fixed unit 33 provided on the back frame 3b.

[Unit body]
As shown in FIG. 13, the unit main body 30 has side walls standing around the periphery of the rectangular bottom plate and opens toward the center in the left-right direction when connected to the back frame 3 b. A hollow main body casing 35 including an outer cover 36 and an inner cover 37 that closes an opening of the outer cover 36 is provided. The main body casing 35 has a thickness dimension corresponding to the height dimension of the side wall, and the upper end thickness dimension D2 of the front side portion to which the air bladder 9 is attached is larger than the lower end thickness dimension D1. ing. Therefore, the air bag attachment surface 37a to which the air bag 9 is attached in the inner cover 37 forms an inclined surface so as to approach the center in the left-right direction from the lower end toward the upper end.

  On the air bag mounting surface 37a, a superposition of three air bags 9 is mounted. Each air bag 9 has a hollow inflating portion 9a that forms a flat rectangular shape when contracted, and a plate-like base portion 9b that extends from both sides of one long side of the inflating portion 9a. A pipe-shaped socket 9c communicating with the internal space of the expanding portion 9a is attached between the base portions 9b and 9b. These air bags 9 are attached to the air bag attachment surface 37a via spacers 38.

  The spacer 38 has a rectangular parallelepiped shape, a through hole 38a penetrating between the left and right surfaces is formed, and three spacers 38 have openings on the upper surface, the lower surface, and the front surface perpendicular to the through hole 38a. The slits 38b are formed in parallel at equal intervals. The three overlapped air bags 9 are inserted into the slits 38b of the plate-like base portions 9b, so that the space between the base portions 9b is kept constant, and the through holes 38a of the spacers 38 and the base portions 9b. The air bag mounting surface 37a is fastened by a single bolt (not shown) passed through the through hole 9d formed in the air bag. In FIG. 13, only the spacer 38 for fixing one base portion 9b is shown, but the same spacer 38 is also used for fixing the other base portion 9b.

[Movable unit]
FIG. 14 is an external perspective view showing the configuration of the movable unit 32, and FIG. 15 is an exploded perspective view of the movable unit 32 shown in FIG. As shown in FIG. 14, the movable unit 32 has a lever part (operation part) 41 pivotally supported by a round bar-like lever pin 40. The lever portion 41 protrudes from the rectangular plate-shaped gripping portion 42, the rectangular plate-shaped standing plate portion 43 erected from both ends of the gripping portion 42 toward the back surface side, and the back surface of the gripping portion 42. And a rod support portion 44 having a through hole 44a formed at the tip. In addition, a pin hole 43 a is formed in the front portion of the upper and lower standing plate portions 43 so as to pass through in the vertical direction so that the axes coincide with each other. A semicircular stopper 43b that protrudes toward the center in the left-right direction along the surface direction is formed.

  FIG. 16 is an external perspective view of the treatment unit 7 </ b> B, and shows the inside of the main body casing 35 with the outer cover 36 removed from the unit main body 30. As shown in FIG. 16, two upper and lower flanges 37b are erected on the rear portion of the inner cover 37 of the main body casing 35 toward the inside of the main body casing 35, and both ends of the lever pin 40 are supported by the flanges 37b. ing. In the lever portion 41 described above, the pin portion 43a is inserted into the lever pin 40 in this state, so that the grip portion 42 can be swung around the lever pin 40. Further, the lever pin 40 is provided with an urging means (not shown) that urges the lever portion 41 in a direction against a pulling operation (an operation of swinging outward), and when the user releases the hand, The lever portion 41 is returned to a position where the stopper 43 b comes into contact with the back surface of the inner cover 37.

  As shown in FIGS. 14 and 15, the movable unit 32 includes an engaging claw 46 connected to the lever portion 41 via an operating rod 45, and a long cylindrical shape that accommodates the operating rod 45 and the engaging claw 46. A guide case 47 is further provided. As shown in FIG. 15, the guide case 47 is divided into front and rear parts, and a rear cover 49 is assembled to the front guide case main body 48, whereby an internal space in which a cross section perpendicular to the longitudinal direction forms an arc shape. A hollow cylindrical guide case 47 is formed. Further, a rectangular slit hole 48a penetrating the inside and outside of the guide case 47 is formed in the vicinity of the distal end of the guide case main body 48, and an ellipse-shaped flange 48b is provided at the base end portion. The guide case 47 is attached so as to stand on the rear surface of the inner cover 37 of the unit body 30 through a bolt hole 48c provided in the flange 48b (see FIG. 13).

  Further, as shown in FIG. 15, the flange 48b is formed with a through hole 48d communicating with the internal space of the guide case 47, and the operation rod 45 extends inside and outside the guide case 47 through the through hole 48d. It is arranged. The operation rod 45 is made of a wire-like metal member, and has both ends 45a and 45b bent. An end 45a of the operation rod 45 located outside the guide case 47 protrudes into the unit body 30 through a through hole 37c formed in the inner cover 37 (see FIG. 16). An engaging claw 46 is attached to an end 45 b that is locked in the through hole 44 a of the rod support 44 of the lever 41 and is located in the guide case 47.

  In the engaging claw 46, a support portion 46b on which the end portion 45b of the operation rod 45 is hooked is formed at the base end portion (outer end portion in the left-right direction) of the main body portion 46a extending in the left-right direction, and the vicinity of the support portion 46b. Is provided with a shaft portion 46c extending in the vertical direction. Further, a substantially trapezoidal engagement protrusion 46d that protrudes forward is provided at the front end of the main body 46a, and a leaf spring-like biasing portion 46e that extends rearward is provided at the front end of the main body 46a. ing. The engaging claw 46 including the main body portion 46a, the support portion 46b, the shaft portion 46c, the engaging protrusion 46d, and the urging portion 46e is integrally formed of a synthetic resin material.

  In such a state that the engaging claw 46 is housed in the guide case 47, the shaft portion 46c is supported by the bearing portion 49a protruding from the inner surface of the cover 49 of the guide case 47, and the shaft portion 46c is centered. And can be swung back and forth. Further, the engaging claw 46 in the guide case 47 is urged forward by a reaction force in which the leaf spring-like urging portion 46e is pressed against the inner surface of the cover 49 of the guide case 47, and thereby the engagement protrusion 46d. Protrudes outward (forward) from the slit hole 48a of the guide case body 48 (see FIG. 14).

  When the gripping portion 42 of the lever portion 41 is pulled as shown in FIG. 15, the acting force of the movable unit 32 described above is transmitted to the support portion 46 b of the engaging claw 46 via the operation rod 45, The engaging protrusion 46d swings rearward about the engaging claw 46 about the axis of the shaft portion 46c. As a result, the engaging protrusion 46d moves backward into the slit hole 48a from the state protruding outward from the slit hole 48a. On the other hand, when the pulling operation is released by releasing the lever 41, the engaging claw 46 has the engaging protrusion 46d at the tip swinging forward about the axis of the shaft 46c by the urging force of the urging portion 46e. Move. As a result, the engaging protrusion 46d protrudes outward from the slit hole 48a again.

  As shown in FIGS. 14 and 15, the movable unit 32 includes an air pipe 50 extending in the left-right direction along the longitudinal direction of the guide case 47. The air pipe 50 has a circular cross section and is slightly shorter than the guide case 47, a flange 50b provided at the base end of the pipe portion 50a, and the flange 50b is opposite to the pipe portion 50a. It is composed of a tubular socket part 50c that is provided in a projecting direction and is provided coaxially with the pipe part 50a. Further, an air passage 50d penetrating from the distal end of the pipe portion 50a to the proximal end of the socket portion 50c is formed along an axis 50e common to the pipe portion 50a and the socket portion 50c. The air pipe 50 is fixed by the flange 50b being fastened to the rear portion of the inner cover 37 of the main body casing 35 by a bolt (not shown) or the like, and the socket portion 50c is fixed from the inner cover 37 to the unit main body in the fixed state. It projects into 30 (see FIG. 16). Note that the surface 48c of the guide case main body 48 of the guide case 47 described above (the surface on the side from which the engaging projection 46d protrudes) is a substantially arcuate surface centered on the pipe portion 50a.

  As shown in FIG. 16, one end of a flexible rubber tube 51 is connected to the socket portion 50 c of the air pipe 50. The rubber tube 51 extends from the socket part 50 c in the unit main body 30, passes through a through hole 37 d (see also FIG. 13) that penetrates the air bag mounting surface 37 a located on the front side of the inner cover 37, and passes through the unit main body 30. It is arranged up to the outside. Further, a distribution joint (not shown) is connected to the other end of the rubber tube 51, and three tubes extending from the distribution joint are connected to the socket 9c (see FIG. 13) of each air bag 9. Therefore, the air passage 50d in the air pipe 50 and the air bag 9c communicate with each other.

[Fixed unit]
Next, the fixing unit 33 attached to the back frame 3b will be described. FIGS. 17A and 17B are external perspective views showing the configuration of the fixed unit 33, where FIG. 17A shows an external view when viewed from one direction, and FIG. 17B shows an external view when viewed from another direction. FIG. 18 is an exploded perspective view of the fixed unit 33 shown in FIG.

  As shown in FIG. 17, the fixing unit 33 includes a rectangular flat plate-shaped flange 55, a bottomed cylindrical chamber portion 56 provided on the front side (that is, the surface 55 a side) of the flange 55, Further, a bottomed cylindrical joint base 57 provided on the front side is provided. The flange portion 55, the chamber portion 56, and the joint base 57 are integrally formed of a synthetic resin material.

  As shown in FIG. 18, the chamber portion 56 has an opening 56 a directed outward in the left-right direction, and a vent hole 56 b penetrating to the back surface 55 b of the flange 55 is formed in the peripheral wall portion. As shown in FIG. 17, a tubular socket 55c projects from the rear surface 55b of the flange 55, and the vent hole 56b communicates with the socket 55c. A flexible air tube (not shown) is connected to the socket 55c so that air from the air supply / exhaust device 15 (see FIG. 2) can be supplied and exhausted into the chamber portion 56.

  Further, as shown in FIG. 18, two sealing members 60 made of a synthetic resin having flexibility and forming an annular shape sandwich a cylindrical spacer 61 between the openings 56 a of the chamber portion 56. Further, the cap 62 having a through hole 62a concentric with the seal member 60 is fastened to the peripheral portion of the opening 56a with a screw 63, whereby the seal member 60 is accommodated in the opening 56a. The seal member 60 includes an outer edge portion 60a that contacts the inner peripheral surface of the opening 56a, an inner edge portion 60b that contacts the outer peripheral surface of the air pipe 50 as will be described later, and a thickness dimension between the outer edge portion 60a and the inner edge. It is comprised from the thin part 60c smaller than the part 60b. Therefore, the thin edge portion 60c is bent, so that the inner edge portion 60b can be displaced a little along the axial direction.

  As shown in FIG. 18, the joint base 57 is formed in a hollow cylindrical shape that forms an internal space 57a in which the cross section orthogonal to the longitudinal direction forms an arc shape, like the guide case 47 (see FIG. 14) of the movable unit 32. And has an opening 57 b that coincides with the opening direction of the opening 56 a of the chamber portion 56. More specifically, the internal space 57a has an arc shape centered on the shaft core 56c of the chamber portion 56, and has a shape that can accommodate the guide case 47 while leaving a surplus space in the circumferential direction of the shaft core 56c. It has become. Further, a plurality of engaged holes 57 c are formed through the front side wall portion of the joint base 57. The engaged holes 57c have a rectangular shape, and are provided in a matrix along the direction along the axis 56c and the direction around the axis 56c. In the present embodiment, a total of 15 engaged holes 57c are provided in five rows in the direction along the shaft core 56c and in three rows in the direction around the shaft core 56c.

[Insertion / removal of treatment unit and position adjustment]
FIG. 19 is a diagram illustrating a process of inserting / removing the movable unit 32 with respect to the fixed unit 33 described above. As shown in FIG. 19, the movable unit 32 attached to the treatment unit 7 </ b> B is approached and connected to the fixed unit 33 from the outside in the left-right direction (see the upper diagram in FIG. 19). The guide case 47 of the movable unit 32 is inserted into the internal space 57a of the joint base 57 of the fixed unit 33, and the pipe portion 50a of the air pipe 50 is fixed through the through hole 62a of the cap 62. The fixed unit 33 is mounted so as to be inserted into the chamber portion 56 of the unit 33.

  At this time, the engaging protrusion 46d protruding from the slit hole 48a of the guide case 47 is pushed back by the inner wall surface of the joint base 57, and the engaging protrusion 46d comes to a position facing the engaged hole 57c. Project again and engage with each other. As a result, the movable unit 32 is fixedly connected to the fixed unit 33 (see the lower diagram of FIG. 19), and the mounting of the treatment unit 7B on the backrest 3 is completed.

  On the other hand, when separating the treatment unit 7B from the backrest part 3, the lever part 41 is pulled outward in the left-right direction. As a result, the engaging protrusion 46d moves backward as described above and the engaged state with the engaged hole 57c is released, so that the treatment unit 7B is pulled out outward in the left-right direction and separated from the backrest portion 3. Can be made. Further, as can be seen from the above description, in the chair type massage machine 1 according to the present embodiment, the pulling operation direction of the lever portion 41 and the direction of pulling the treatment unit 7B away from the backrest portion 3 are the same. The operation of separating the treatment unit 7B can be easily performed.

  Moreover, also when adjusting the position of the treatment unit 7B in the left-right direction, the lever portion 41 is pulled out in the left-right direction. As a result, the engagement state between the engagement protrusion 46d and the engaged hole 57c is released, so that the unit body 30 of the treatment unit 7B can be moved in the left-right direction. Then, by stopping the pulling operation of the lever portion 41 at an appropriate position where the engaging protrusion 46d and any of the engaged holes 57c face each other, the engaging protrusion 46d is engaged with the engaged hole 57c again. The movable unit 32 is connected to the fixed unit 33 at the position, and the treatment unit 7 is fixed to the backrest 3 at the position adjusted in the left-right direction.

  FIG. 20 is a drawing showing the vertical position adjustment operation of the treatment unit 7B, (a) shows a state in which the air bag mounting surface 37a (see FIG. 13) of the unit body 30 is positioned relatively below, (B) has shown the state located upwards. As shown in FIG. 20, the direction of the treatment unit 7B is changed by pulling the lever portion 41 outward in the left-right direction. As a result, the engagement state between the engagement protrusion 46d and the engaged hole 57c is released, and the unit main body 30 rotates in the vertical direction within a predetermined range around the shaft core 50e (see FIG. 15) of the air pipe 50. Can be made. Then, by stopping the pulling operation of the lever portion 41 at an appropriate position where the engaging protrusion 46d and any of the engaged holes 57c face each other, the engaging protrusion 46d is engaged with the engaged hole 57c again. The movable unit 32 is connected to the fixed unit 33 at the position, and the treatment unit 7B is fixed to the backrest 3 at the position adjusted in the vertical direction.

  As described above, in the case of the chair-type massage machine 1 according to the second embodiment, the attachment / detachment of the treatment unit 7B to / from the backrest 3, the horizontal position adjustment, and the vertical position adjustment are performed. Can be performed by a single operation of pulling the lever portion 41. Therefore, it is not necessary to learn a plurality of operation methods when performing these operations, and convenience for the user is improved. In addition, since the position adjustment in the left-right direction and the position adjustment in the up-down direction are possible for the treatment unit 7B, the arrangement of the treatment unit 7B is finely adjusted flexibly according to the physique of the user and the desired treatment position. be able to.

  When the unit body 30 is connected to the backrest 3 as described above, the air pipe 50 of the movable unit 32 and the chamber portion 56 of the fixed unit 33 communicate with each other. As a result, air can be supplied from the air supply / exhaust device 15 (see FIG. 21) to the air bag 9 of the treatment unit 7B via the chamber portion 56 and the air pipe 50, and the air bag 9 is driven by the air supply / exhaust device 15 being driven. Allow to expand and contract. Further, the air bag 9 is configured such that the front part is inflated more greatly than the rear part due to the supply of air.

  Further, the treatment unit 7B is connected to the backrest portion 3 and can be displaced for adjusting the position in the left-right direction and the up-down direction as described above. At this time, the air pipe 50 has an axis 50e (see FIG. 15). ) Or rotate around the axis 50e. Here, as already described, the chamber portion 56 through which the air pipe 50 is inserted is hermetically sealed by the two seal members 60. Then, as described with reference to FIG. 18, when the thin portion 60 c of the seal member 60 is bent, the inner edge portion 60 b is displaced so as to follow the sliding or rotating air pipe 50, and the inner edge portion 60 b and the air pipe 50 are displaced. The airtightness between the outer peripheral surface and the outer peripheral surface is maintained.

[Massage operation]
FIG. 21 is a schematic diagram showing a state in which the user seated on the chair type massage machine 1 is looked down from above to explain the treatment operation using the treatment unit 7B, and (a) performs pinching massage. (B) shows a state of performing a torsional massage. In the pinching massage shown in FIG. 21 (a), the air bag 9 (hereinafter referred to as air bag 9A) of the treatment unit 7B and the air bag 9 (hereinafter referred to as the air bag 9) provided in the vicinity of the attachment position of the treatment unit 7B in the backrest portion 3. , Air is supplied from the air supply / exhaust device 15 to the air bag 9B), and the air bags 9A and 9B are inflated simultaneously.

  As a result, the area near the upper arm and shoulder of the user is pressed so as to be sandwiched from the front and rear direction, and the acupuncture points called the shoulder inner limb (Kennai Ryo) existing on the front side of the area, and the back surface of the area You can stimulate the acupuncture points on the side called Tenso. In addition, stimulating the inner shoulder can be expected to improve the numbness from the forearm to the thumb, and stimulating Tenmune is expected to improve the numbness from the shoulder to the upper arm. can do.

  In the torsional massage shown in FIG. 21B, the left air bag 9A and the right air bag 9B are inflated simultaneously, and the right air bag 9A and the left air bag 9B are contracted. It is in a state. As a result, the left half of the user is held by the air bag 9A and the backrest 3 while the right half is pushed forward by the air bag 9B, so that the user twists the upper body to the left. Massaged. Contrary to the above, the upper air bag 9A and the left air bag 9B are inflated at the same time, and the left air bag 9A and the right air bag 9B are contracted to twist the upper body to the right. Can be massaged.

  Furthermore, it is possible to combine the pinching massage shown in FIG. 21A and the twist massage shown in FIG. For example, the left air bag 9A, 9B and the right air bag 9B are inflated at the same time to stimulate the left half of the patient's left shoulder and Tenmune, while stimulating the right body Can be pushed forward to give a torsional massage. Conversely, the right air bags 9A and 9B and the left air bag 9B are inflated at the same time, thereby stimulating the patient's right body to hold the shoulder inner limbs and Tenmune. On the other hand, the left half can be pushed forward to give a twist massage.

  FIG. 22 is a schematic view showing the chair-type massage machine 1 in which the backrest part 3 is tilted backward and reclined in order to explain the treatment operation using the treatment unit 7B, and (a) shows the upper body and the lower body. The operation in the case of treatment by twisting in the same direction, (b) shows the operation in the case of treatment by twisting the upper body and the lower body in opposite directions. In addition, as already mentioned in the description of FIG. 2, in the chair type massage machine 1 according to the present embodiment, air bags 9 are arranged on the left and right of the rear part of the seat part 2 and on the left and right of the front part, In FIG. 22, the air bag 9 disposed on the left and right of the rear part is indicated as an air bag 9C, and the air bag 9 provided on the left and right of the front part is indicated as an air bag 9D.

  First, in the case of the operation shown in FIG. 22A, as shown on the left side of the drawing, the air bag 9A included in the right treatment unit 7B, the air bag 9B provided on the left side of the backrest 3 and the left side of the seat 2 The air bags 9C and 9D provided on the air bag 9 are inflated simultaneously by the supply of air from the air supply / exhaust device 15 (see FIG. 2). As a result, the right side portion of the user's upper body (near the right shoulder and right chest) is pressed and held by the inflated air bag 9A toward the backrest 3 side, and in this state, the left side portions of the upper body and lower body are It is twisted so as to be pushed up by the air bags 9B, 9C, 9D. Conversely, as shown on the right side of FIG. 22 (a), the upper body of the user is obtained by simultaneously inflating the left air bag 9A and the right air bags 9B, 9C, 9D. Can be twisted by pushing up the right side of the upper body and the lower body while holding the left side. Then, by alternately executing the state on the left side and the state on the right side of FIG. 22 (a), it is possible to alternately twist the upper and lower body of the user to the right and left sides simultaneously. .

  Next, in the case of the operation shown in FIG. 22B, as shown on the left side of the drawing, the air bag 9A included in the right treatment unit 7B, the air bag 9B provided on the left side of the backrest 3 and the seat 2 The air bags 9 </ b> C and 9 </ b> D provided on the right side are in a state of being inflated simultaneously by the supply of air from the air supply / exhaust device 15. As a result, the right side portion of the upper body of the user is pressed and held between the inflated air bag 9A and the backrest portion 3. In this state, the left side portion of the upper body is pushed up by the air bag 9B and the lower body is air. Since the right side portion is pushed up by the bags 9C and 9D, the upper body and the lower body can be twisted so as to be directed to the opposite sides. Conversely, as shown on the right side of FIG. 22 (b), by making the left air bag 9A, the right air bag 9B, and the left air bags 9C and 9D inflated simultaneously, While holding the left part of the upper half of the user, the right part of the upper half and the left part of the lower half can be pushed up and twisted. Then, by alternately executing the state on the left side and the state on the right side of FIG. 22 (b), it is possible to repeatedly perform torsional massage in which the upper body and the lower body of the user are directed in opposite directions. is there.

  22A and 22B, when four air bags 9C, 9C, 9D, and 9D are provided in the seat portion 2, the left two air bags 9C and 9D or the two right air bags are used. Although the case where 9C and 9D are inflated simultaneously has been described, only one of the left or right air bags 9C and 9D may be inflated, and in particular, the waist of the user Only the air bag 9C on the left side or the right side adjacent to may be inflated. That is, in the example on the left side of FIG. 22A, the right air bag 9A and the left air bags 9B and 9C may be inflated, and the air bag 9D may not be inflated.

  Such a massage operation can be realized in any of the chair type massage machines 1 of the first and second embodiments.

(Embodiment 3)
FIG. 23 is a schematic front view showing a configuration according to the third embodiment of the chair type massage machine, and shows only the back frame 3b and the treatment unit 70. FIG. FIG. 24 is a plan view of the chair type massage machine shown in FIG. These chair type massage machines shown in FIGS. 23 and 24 can move the treatment unit 70 up and down along the back frame 3b, and the pressing force applied to the treatment unit 70 from the user side. It is the structure which can be received appropriately. Hereinafter, this configuration will be described in detail.

  As shown in FIG. 24, a back side recess 71 that is recessed toward the front side and extends in the up and down direction is formed on the back side of the back frame 3b, and the back side recess 71 extends in the up and down direction along the back side recess 71. 72a (see also FIG. 23) is attached. The rack 72a is arranged with the dentition facing backward. Further, a front side recess 73 that is recessed toward the back side and extends in the vertical direction is formed on the front side of the back frame 3b, and the guide rail 74a that extends in the vertical direction along the front side recess 73 (FIG. 23). See also). The rack 72a and the guide rail 74a are provided in parallel to each other.

  On the other hand, as shown in FIG. 24, the treatment unit 70 has a substantially F shape in plan view, and a side wall body 75 extending in the front-rear direction and a center side in the left-right direction from the rear end portion of the side wall body 75. A back support 76 extending to the front, a front support 77 extending from the middle of the side wall 75 in the front-rear direction to the center in the left-right direction, and an air bag 9 attached to the front inner surface of the side wall 75. . The back support 76 has a shape that is substantially aligned with the back-side recess 71, and a pinion 72b that meshes with the rack 72a from the rear is supported on the front portion of the back support 76 so as to be rotatable about the left and right axis. Has been. A rotation shaft of a motor 78 is connected to the pinion 72b. When the motor 78 is driven to rotate, the pinion 72b rolls up and down along the rack 72a. Further, the front support 77 has a shape that is substantially aligned with the front-side recess 73, and a back surface portion of the front support 77 abuts against the guide rail 74a from the center in the left-right direction, and is in contact with the guide rail 74a. A roller 74b is provided so as to be able to roll up and down. Although not shown in FIGS. 23 and 24, a back cushion 3c as shown in FIG. 10 is provided on the front side of the back frame 3b so as to cover the front surface of the front support 77 included in the treatment unit 70. .

  In such a treatment unit 70, when the motor 78 is rotationally driven, the pinion 72b rolls on the rack 72a and can be moved up and down along the back frame 3b. Further, when the air bag 9 is inflated and the upper body of the user is pressed from the side, the reaction force acts on the treatment unit 70, and an external force directed outward in the left-right direction is applied to the treatment unit 70. In the present embodiment, the reaction force acting on the treatment unit 70 can be appropriately received by the back frame 3b. This point will be described next.

  FIG. 25 is a schematic plan view showing forces acting on the treatment unit 70 and the back frame 3b when the air bag 9 is inflated. As shown in FIG. 25, a force F <b> 1 directed outward in the left-right direction acts on the front portion of the side wall body 75 of the treatment unit 70 by the expansion of the air bag 9. As a result, the roller 74b is urged in the same direction, and a force F2 directed outward in the left-right direction also acts on the guide rail 74a.

  Here, the attachment location of the air bag 9 on the side wall 75 is a force point, and the roller 74b is a fulcrum, and at this time, the pinion 72b is an action point. Accordingly, the pinion 72b is urged in the direction of rotation with the roller 74b as a fulcrum, and is pressed by the pinion 72b, and a force F3 directed substantially forward acts on the rack 72a. As a result, due to the forces F2 and F3 acting on the guide rail 74a and the rack 72a, the couple of the side portions of the back frame 3b that causes the center portion in the left-right direction to be directed forward relative to the end portions of the side portions M1 will act. However, since the upper body of the user is leaning against the back frame 3b and the pressing force F4 is applied to the back, the couple M1 can be offset by the pressing force F4.

  Thus, the force F1 acting on the treatment unit 70 when the air bag 9 is inflated is received by the back frame 3b and the user. In addition, the force F3 that generates the couple M1 and the pressing force F4 by the user act in directions opposite to each other with the back frame 3b interposed therebetween, so that the back frame 3b receives the forces F3 and F4. It is not necessary to greatly improve the rigidity, and as a result, the reaction force F1 due to the expansion of the air bag 9 can be appropriately received. Further, since the force F3 acting on the pinion 72b is directed in a direction in which the force is applied to the rack 72a, it is possible to prevent the rack 72a from being disengaged from the pinion 72b when the treatment unit 70 is moved up and down.

(Embodiment 4)
FIG. 26 is a schematic front view showing the configuration according to the fourth embodiment of the chair type massage machine, and shows only the back frame 3b and the treatment unit 80. FIG. FIG. 27 is a plan view of the chair type massage machine shown in FIG. The chair type massage machine shown in FIGS. 26 and 27 is configured such that the treatment unit 80 attached to the side of the back frame 3b can be moved in the front-rear direction and can be retracted when not in use. ing. Hereinafter, this configuration will be described in detail.

  As shown in FIG. 26, a unit housing recess 81 that is recessed toward the center in the left-right direction is formed on the side of the back frame 3b. As shown in FIG. 27, a cylinder support wall 82 that extends outward in the left-right direction and forms the rear surface of the unit storage recess 81 is provided behind the unit storage recess 81. A telescopic cylinder 83 having a rear end fixed thereto is extended forward. A treatment unit 80 is attached to the front end portion of the cylinder 83 and is movable in the front-rear direction as the cylinder 83 expands and contracts. In addition, a guide rail 84a that is long in the front-rear direction is attached to an upper part and a lower part of a side surface (that is, a surface facing outward in the left-right direction) of the unit housing recess 81, and an inner side surface (that is, a treatment unit 80) A guide rod 84b that is long in the front-rear direction is attached to the upper and lower portions of the surface directed toward the center in the left-right direction in correspondence with the guide rail 84a.

  The guide rod 84b is relatively movable in the front-rear direction along the guide rail 84a, and a guide 84 for guiding the movement of the treatment unit 80 in the front-rear direction is configured by the guide rail 84a and the guide rod 84b. 26 and 27 show a configuration in which the guide rod 84b is provided so as to protrude from the inner surface of the treatment unit 80, it may be provided so as not to protrude. Further, the guide rod 84b may be disposed on the outer side surface of the treatment unit 80. In this case, the guide rail 84a is provided so as to extend forward from the outer end portion in the left-right direction of the cylinder support wall 82, for example. Good. In this way, it is possible to prevent the guide rod 84b from interfering with the user.

  With this configuration, when the cylinder 83 expands and contracts, the treatment unit 80 slides in the front-rear direction while being guided by the guide 84. And when it is located at the forefront, it faces the side of the upper body of the user, and when it is located at the back, it is located at the side of the back frame 3b, and the front end of the treatment unit 80 and the front surface of the back frame 3b Is designed to be approximately the same. Note that a control unit is connected to the cylinder 83 via a drive unit (not shown), and the expansion / contraction operation is controlled based on an instruction from the control unit.

(Embodiment 5)
FIG. 28 is a schematic front view showing the configuration according to the fifth embodiment of the chair type massage machine, and shows only the back frame 3b and the treatment unit 90. FIG. FIG. 29 is a plan view of the chair type massage machine shown in FIG. These chair type massage machines shown in FIGS. 28 and 29 have a treatment unit 90, and by moving this, the vicinity of the upper arm and shoulder of the user can be selectively treated from the outside or from the rear. It has become. Hereinafter, this configuration will be described in detail.

  As shown in FIGS. 28 and 29, a rectangular unit housing recess 91 is formed in the front of the side of the back frame 3b, which is recessed rearward, and is formed in the unit housing recess 91 in the left-right direction. An actuator 94 comprising a screw rod 92 and a drive nut 93 ball-joined to the screw rod 92 is accommodated. The screw rod 92 has substantially the same length as the dimension in the left-right direction of the unit housing recess 91, and can be rotated around its own axis by driving a motor (not shown). A treatment unit 90 is connected to the drive nut 93.

  FIG. 30 is a schematic perspective view showing the configuration of the right treatment unit 90, where (a) shows the posture when treating the vicinity of the upper arm and shoulder from the rear, and (b) shows the posture when treating from the side. Each shows. Since the left treatment unit 90 has the same configuration, the configuration is not described in detail here.

  As shown in FIG. 30, the treatment unit 90 has a rectangular shape that is substantially the same as the unit accommodating recess 91 in a front view, and includes a main unit 95 and a subunit 96. The main unit 95 has a substantially rectangular box shape, and a treatment device 97 such as an air bag that can be inflated and contracted is provided on a surface 95a facing the user. The main unit 95 is formed with a through hole 95d penetrating in the left-right direction from the base portion 95b to the tip portion 95c, and the screw rod 92 can be inserted therethrough.

  The drive nut 93 described above is connected to the base portion 95b of the main unit 95. The drive nut 93 has a substantially rectangular parallelepiped shape, and is disposed at a substantially central position in the vertical direction of the base portion 95 b of the main unit 95. The drive nut 93 is formed with a screw hole 93a that penetrates in the left-right direction and is screwed into the screw rod 92. In the state shown in FIG. 30A, the screw rod 92 is inserted into the screw hole 93a and the through-hole 95d. The main unit 95 and the drive nut 93 are arranged side by side in the passed state. And the wire 98 is suspended between the outer side edge part 93b of the left-right direction of the drive nut 93, and the base part 95b of the main unit 95, and both are connected with some play (FIG.30 (b)). reference).

  On the other hand, the subunit 96 is composed of an upper member 96a and a lower member 96b each having a substantially rectangular parallelepiped shape, and is arranged on the upper side and the lower side of the base portion 95b of the main unit 95 so as to sandwich the drive nut 93 from above and below. It is installed. The upper member 96a and the lower member 96b are both connected to the base portion 95b of the main unit 95 via a pivot 96c extending in the vertical direction by a hinge or the like, and the main unit 95 is connected to the sub unit 96. It can be rotated in the front-rear direction.

  Next, the operation of such a treatment unit 90 will be described. As shown in FIG. 30 (a), when the drive nut 93 is located in the middle of the screw rod 92, the screw rod 92 is inserted into the through hole 95d and the main unit 95 points the treatment device 97 to the front (front). As shown in the right treatment unit 90 shown in FIGS. 28 and 29, the treatment unit 90 is partially or entirely housed in the unit housing recess 91 of the back frame 3b. (FIG. 28 and FIG. 29 show a state in which everything is accommodated). At this time, the treatment device 97 faces the back of the upper arm and shoulder of the user, and this portion can be treated by operating the treatment device 97.

  On the other hand, when the screw rod 92 is rotated and the drive nut 93 is moved to the left and right, the treatment unit 90 is also moved along with this, and within the range in which the drive nut 93 can move along the screw rod 92, Position adjustment in the left-right direction can be performed. It is also possible to operate the treatment device 97 while moving it in the left-right direction.

  Next, when the drive nut 93 reaches the vicinity of the tip of the screw rod 92, the screw rod 92 is removed from the through hole 95d of the main unit 95, and the main unit 95 is rotatable about the pivot 96c with respect to the subunit 96. . When the drive nut 93 further moves outward to reach the foremost end of the screw rod 92, the main unit 95 is pushed by the drive nut 93, and the main unit 95 rotates forward about the pivot 96c. Then, the main unit 95 is driven to the end surface of the base portion 95b of the main unit 95 (the rear end surface in the state of FIG. 30B) with the main unit 95 bent so as to be substantially orthogonal to the subunit 96 and protruding forward. The front surface of the nut 93 comes into contact with the state shown in FIG. 30B (see also the left treatment unit 90 shown in FIGS. 28 and 29).

  At this time, the treatment device 97 of the treatment unit 90 faces the outer surface of the upper arm and shoulder of the user, and this portion can be treated by operating the treatment device 97. Further, when an air bag is used as the treatment device 97, a reaction force that presses the user when inflated acts on the treatment unit 90. As described above, the drive nut 93 is attached to the end surface of the base portion 95b of the main unit 95. Since the front surface is in contact, this reaction force can be received by the drive nut 93, and the main unit 95 can maintain the posture shown in FIG. 30 (b).

  Further, as shown in FIG. 29, a back cushion 3c having cushioning properties is disposed on the front side of the back frame 3b, and a subunit that pivotally supports the main unit 95 like the left and right treatment units 90 shown in FIG. No. 96 is located in the unit accommodating recess 91 behind the back cushion 3c, regardless of the state of the main unit 95 shown in FIGS. 30 (a) and 30 (b). Accordingly, when the user leans his / her upper body against the backrest 3, the pressure of the upper body acts on the subunit 96 via the back cushion 3 c, so that the positions of the subunit 96 and the main unit 95 are stable. In particular, displacement in the direction of rotation around the axis of the screw rod 92 is restricted.

  When the screw rod 92 is rotated from the state of FIG. 30B and the drive nut 93 is moved to the center in the left-right direction, the main unit 95 connected to the drive nut 93 via the wire 98 is Then, it pivots backward about the pivot axis 96c. Then, after the treatment device 97 attached to the main unit 95 is facing frontward and the through hole 95d is directed in the left-right direction, the main unit 95 is further moved toward the center in the left-right direction. Then, the screw rod 92 is inserted, and the state shown in FIG.

  In addition, a guide may be provided between the subunit 96 and the wall portion of the unit accommodating recess 91 so that the movement direction of the subunit 96 is restricted only in the left-right direction. Thereby, the position of the treatment unit 90 can be stably maintained regardless of the pressure on the subunit 96 by the user who leans against the backrest 3. The subunit 96 may also be provided with a treatment device 97 such as an air bag.

The reference invention makes it easy to attach the removable treatment unit to the backrest, adjusts the treatment position to the user with the treatment unit attached, and removes the treatment unit. Then, it can be applied to a chair type massage machine that can be made compact. The present invention can also be applied to a chair type massage machine that can be made compact by retracting the treatment unit when not in use.

DESCRIPTION OF SYMBOLS 1 Chair type massage machine 2 Seat part 3 Backrest part 3b Back frame 4 Footrest 5 Armrest 7A, 7B, 70, 80, 90 Treatment unit 9 Air bag 30 Unit main body 31 Lock mechanism 32 Movable unit 33 Fixed unit 41 Lever part (operation Part)
46 engaging claw 46d engaging protrusion 48a slit hole 50 air pipe 56 chamber part 57 joint base 57c engaged hole 60 seal member 101 base block 105 joint base 110 lock mechanism 111 guide pin (supporting protrusion)
112 Release lever (control unit)
113 Lock arm (locking part)
102 Main body casing (base part)

Claims (3)

In a chair type massage machine with a seat and a backrest,
The backrest includes a back frame for supporting the upper body of the user through the cushion attached to the side of the back frame, massaging the sites around the upper arm and shoulder of the user side and from substantially the front A treatment unit having a treatment part to perform,
The treatment unit is
It has an air bag that expands and contracts by supplying and exhausting air as the treatment part on its inner surface,
The inner surface can be moved in the front-rear direction while maintaining the state toward the center in the left-right direction, and can be retracted when not in use .
A chair-type massage characterized in that when it is located in the foremost position, its inner surface faces the side of the upper body of the user, and when it is located at the rearmost position, its inner surface faces the side of the back frame. Machine. When the treatment unit is located at the rearmost position, the treatment unit is located on the side of the back frame, and the front end of the treatment unit and the front surface of the back frame are substantially flush with each other. The chair type massage machine according to claim 1 . The chair-type massage machine according to claim 1 , wherein the back frame is formed with a concave portion formed on a side portion thereof toward a central side in the left-right direction.

Images