JP2007014466A - Massage mechanism of chair type massage machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a massage mechanism arranged in a backrest portion of a chair type massage machine and capable of properly reducing a number of parts and weight. <P>SOLUTION: The massage mechanism 6 comprises a therapeutic mechanism 6A arranged in the backrest portion 3, an oscillating mechanism 6C supporting the therapeutic mechanism 6A and oscillating the same in a substantial fore and aft direction, and an elevating and lowering mechanism 6B supporting the oscillating mechanism 6C and moving the same in a substantial vertical direction, wherein the elevating and lowering mechanism 6B has side portion frames 51 respectively arranged in left and right sides and a lower frame 53 spanning between the side frames 51 and supporting both the frames, and the oscillating mechanism 6C is supported oscillatably relative to the lower frame 53 of the elevating and lowering mechanism 6B. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a massage mechanism that is provided in the backrest portion of a chair type massage machine having a backrest portion and treats the body of a user, and more particularly, to a massage mechanism that can reduce the number of parts.

JP, 2002-159549, A (patent documents) as an example of the conventional massage mechanism which is provided in the backrest part of a chair type massage machine provided with a backrest part, and can treat the body of the seated user. There is one disclosed in 1). As shown in FIG. 10, this massage mechanism 1p is substantially accommodated in a box-shaped casing 2p, and guide rollers 4p, 4p are provided at the lower portions of the left and right side wall portions 3p, 3p of the casing 2p. Yes. The left and right guide rollers 4p, 4p are connected by a support shaft provided between the side wall portions 3p, 3p. The support shaft also serves as a pivot shaft 7p for pivotally mounting the kneading ball drive unit 6p having the treatment element 5p to the casing 2p. The treatment element 5p has a longitudinal direction around the pivot axis 7p. Can be swung.
JP 2002-159549 A (FIG. 7)

  By the way, in the massage mechanism 1p disclosed in Patent Document 1 described above, a support shaft for the guide rollers 4p and 4p that rolls when moving up and down, and a pivot shaft 7p that becomes a swing shaft when the treatment element 5p swings. It is also used. However, the massage mechanism 1p may move up and down at the same time as swinging. In this case, if the support shaft and the pivot shaft 7p as described above are composed of the same shaft, other than a torsional moment is applied to this shaft. This is not preferable because a bending moment is added to the. On the other hand, when the support shaft and the pivot shaft 7p as described above are provided separately, the number of parts constituting the massage mechanism 1p and an increase in weight are caused. This is unfavorable because it affects further weight increase and size increase due to high output and thickening of each frame.

  Then, an object of this invention is to provide the massage mechanism for chair type massage machines which can implement | achieve reduction of a number of parts and weight reduction appropriately.

  The present invention has been made in view of the circumstances as described above, and the present invention is a massage mechanism that is provided in the backrest portion of a chair type massage machine having a backrest portion and treats the body of the user. A treatment unit for stimulating the user, a swing mechanism that supports the treatment unit and swings in the front-rear direction, and supports the swing mechanism in the vertical direction along the backrest portion. An elevating mechanism for moving the elevating mechanism, the elevating mechanism includes a side frame arranged on each of the left and right sides, and an intermediate frame supported between the side frames. It is supported so as to be swingable with respect to the intermediate frame of the lifting mechanism.

  With this configuration, the intermediate frame can be used as a member that supports the left and right side frames and a member that supports the swinging mechanism in a swingable manner, thereby reducing the number of parts. In addition, it is possible to suppress an undesirable moment from being applied to the intermediate frame when the swing mechanism is supported.

  The swing mechanism may include a swing frame that supports the treatment portion, and the swing frame may be provided with a bearing portion through which the intermediate frame is inserted. With such a configuration, the intermediate frame can be configured with a simple configuration.

  The intermediate frame of the lifting mechanism is detachably connected to the side frame, and the treatment mechanism supported by the swing frame removes the intermediate frame from the side frame. By this, it may be configured to be detachable from the lifting mechanism. By adopting such a configuration, the treatment mechanism can be easily attached and detached, and productivity and maintenance can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, the massage mechanism for chair type massage machines which can implement | achieve reduction of a number of parts and weight reduction appropriately can be provided.

  Hereinafter, the massage mechanism of the chair type massage machine according to the embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is a perspective view showing an overall configuration of a chair type massage machine provided with a massage mechanism according to an embodiment of the present invention. This chair type massage machine 1 is mainly composed of a seat portion 2, a backrest portion 3, a footrest 4, and an armrest (armrest portion) 5. In addition, the concept of the direction used below in description of this Embodiment is the user (not shown) seated on the seat part 2 of the chair type massage machine 1 except the case where description is attached | subjected especially in the text. It should be consistent with the concept of direction when viewed from above.

  The seat portion 2 is configured by arranging cushion portions 2a formed substantially flat so that the upper surface is used as a seat surface on the upper portion of a base (not shown). Each has a leg 2b (only the left leg 2b is shown in FIG. 1). An upper end portion of a footrest 4 for massaging the ankle and calf of the user is pivotally attached to the upper front side of the seat portion 2. As a result, the footrest 4 can swing back and forth around its upper end.

  A backrest 3 is provided at the rear of the seat 2. The backrest 3 is a part of the adult body that protrudes outside when an adult with a general physique sits on the seat 2 of the chair type massage machine 1 to support the upper body of the user. The size is not so large that it is substantially rectangular in front view. The lower end of the backrest 3 is pivotally supported by a left and right pivot (not shown) at the rear of the seat 2, and the backrest 3 rotates around the pivot and reclines back and forth. It is possible. In addition, armrests 5 fixedly supported on the base of the seat 2 are provided on both sides of the backrest 3. The armrest 5 extends forward from both sides of the backrest 3. Further, in the chair type massage machine 1 according to the present embodiment, a control unit 7 for controlling the operation is disposed inside the seat unit 2, and is further connected to the control unit 7 via a cable to be treated. A controller 8 operated by a person is provided.

  Inside the backrest 3 is provided a massage mechanism 6 for treating the back of the user to be seated. This massage mechanism 6 is installed in a vertically elevating frame 9 arranged in the backrest portion 3 in a front view and can be moved up and down along the elevating frame 9 as will be described later. At the same time, it is configured to swing in the front-rear direction. Further, the massage mechanism 6 includes a treatment element (treatment section) 10 and performs a massage operation such as fir and beat to give a mechanical stimulus to the user.

  FIG. 2 is an exploded perspective view schematically showing a partial configuration of the treatment mechanism 6A for explaining the operation principle of the treatment mechanism 6A that performs a treatment operation such as a scrubbing operation and a hitting operation in the massage mechanism 6. is there. As shown in FIGS. 1 and 2, the treatment mechanism 6 </ b> A has two roller-like treatment elements 10 and 10 for applying mechanical stimulation to the body of the user. These treatment elements 10 are rotatably attached to front end portions of left and right arms 11 and 11 extending forward.

  The base of each arm 11 is rotatably supported by a support shaft 13 at one end of the kneading connecting rod 12. Further, between the arm 11 and the kneading connecting rod 12, a spring 14 is suspended by latching portions 11a, 12a projecting from the inner side surfaces of the arm 11, and the arm 11 is moved by the action of the spring 14. It is urged to swing downward about the support shaft 13.

  The other end of the kneading connecting rod 12 is connected to one end of the tapping connecting rod 16 via the connecting member 15. As will be described later, the kneading connecting rod 12 performs three-dimensional movements in the up / down, left / right, and front / rear directions so that the treatment element 10 can also be grasped, and the tapping connecting rod 16 performs two movements in the up / down / front / rear directions. Dimensional movement. The connecting member 15 has a flexible connecting structure so that the kneading connecting rod 12 and the knocking connecting rod 16 having different operations can be connected to each other while allowing each operation. In the treatment mechanism 6A according to the present embodiment, a ball joint is employed as the connection structure.

  A fir shaft 20 extending in the left-right direction is disposed between the fir connecting rods 12, 12 provided on the left and right. At left and right ends of the shaft 20, inclined shaft portions 21, 21 formed so as to be inclined at a predetermined angle in the same direction with respect to the axis of the shaft 20 are provided. In addition, a fitting hole 12b that opens to the center side in the left-right direction is formed in the connecting portion between the kneading rod 12 and the connecting member 15. The inclined shaft portion 21 of the kneading shaft 20 is rotatably inserted into the fitting hole 12b via a bearing (not shown).

  A helical gear 22a is coaxially provided at the central portion of the left and right direction of the fir shaft 20, and this helical gear 22a meshes with a worm 22b having a vertical axis of rotation. Thus, the helical gear 22a and the worm 22b constitute the worm gear mechanism 23. A pulley 24 is coaxially provided at the lower end of the worm 22b. The pulley 24 is connected to a pulley 27 provided on an output shaft of a fringing motor 26 such as a servo motor via a belt 25. ing.

  Accordingly, the rotational movement of the output shaft of the motor 26 is transmitted to the worm 22b via the belt 25, and the grind shaft 20 is rotated by the rotation of the worm 22b. Then, with the rotation of the kneading shaft 20, the inclined shaft 21 is displaced so as to draw a conical locus, whereby the kneading connecting rod 12 operates regularly, and the left and right treatment elements 10, 10 are moved up and down, left and right, It moves three-dimensionally back and forth. Such a moving operation is a scoring operation of the treatment element 10.

  Further, a hitting shaft 30 extending in the left-right direction is disposed between the hitting connecting rods 16, 16 provided on the left and right above the fir shaft 10. Eccentric shaft portions 31 are provided at both left and right ends of the hitting shaft 30. The eccentric shaft portion 31 has an axis parallel to the axis of the beat shaft 30, and the left and right eccentric shaft portions 31 and 31 are formed so that the phases are shifted from each other by 180 °. A fitting hole 16b that opens to the center in the left-right direction is formed at the other end of the hitting connecting rod 16, that is, the end of the hitting connecting rod 16 where the connecting member 15 is not connected. The eccentric shaft portions 31 provided at both ends of the hitting shaft 30 are rotatably inserted into the fitting holes 16b via bearings (not shown). A pulley 32 is coaxially provided on the right side of the hitting shaft 30, and the pulley 32 is connected to a pulley 35 provided on an output shaft of a hitting motor 34 such as a servo motor via a belt 33. ing.

  Therefore, the rotational motion of the output shaft of the motor 34 is transmitted to the hitting shaft 30 via the belt 33, and the hitting connecting rod 16 is two-dimensionally moved up and down and front and rear by the revolution of the eccentric shaft portions 31 at both ends of the hitting shaft 30. Operate. This operation is transmitted to the arm 11 via the connecting member 15, and as a result, the treatment element 10 moves. The operation of the treatment element at this time is a beating operation.

  The massage mechanism 6 including such a treatment mechanism 6A includes an elevating mechanism 6B as will be described later, and the treatment mechanism 6A moves up and down along the backrest 3 within the backrest 3 (see FIG. 1). It moves up and down in the direction. Further, as will be described later, the massage mechanism 6 includes a swing mechanism 6C, and the treatment mechanism 6A swings in the front-rear direction inside the backrest portion 3. Hereinafter, the elevating mechanism 6B and the swinging mechanism 6C included in the massage mechanism 6 will be described.

  FIG. 3 is a perspective view showing the configuration of the massage mechanism 6 (including the treatment mechanism 6A, the lifting mechanism 6B, and the swinging mechanism 6C) provided in the chair type massage machine 1 shown in FIG. 1, when viewed from the upper right front. The configuration is shown. The elevating mechanism 6B provided in the massage mechanism 6 includes side frames 51, 51 made of a plate material and arranged facing the left and right sides, and an upper frame 52 made of a plate material that is installed between the upper portions of the side frames 51 to support them. And an elevating frame body 50 constituted by a lower frame (intermediate frame) 53 formed of a round bar-like pole that extends between and supports the lower portions of the side frames 51. The left and right side frames 51 are formed with lightening holes 51a at appropriate positions to reduce weight.

  A through hole 55 is formed in the lower portion of the side frame 51 so as to penetrate the screw 54 in the left-right direction. In addition, screw holes 53a screwed with screws 54 are formed at both ends of the lower frame 53 formed of a round bar-like pole so as to open to the left and right outwards. The lower frame 53 is screwed into the screw hole 53a from the outside with the through hole 55 sandwiched between the screw hole 53a from the inner side in the left-right direction with the through hole 55 of the side frame 51 being aligned. Fixed to the side frame 51. Conversely, the lower frame 53 can be easily removed from the side frame 51 by removing the left and right screws 54.

  Guide rollers 57 and 58 are rotatably attached to the left and right side frames 51. These guide rollers 57 and 58 can roll along a guide rail 59 constituting the elevating frame 9 disposed in the backrest portion 3 of the chair type massage machine 1. More specifically, the lifting frame 9 provided in the backrest 3 has left and right guide rails 59, 59 extending in the vertical direction and parallel to each other. The cross section of the guide rail 59 that intersects the longitudinal direction has a channel shape, and the center side in the left-right direction is open.

  The guide roller 57 has a rotation axis along the left-right direction, and is arranged at the upper part, middle part, and lower part of the side frame 51, respectively. And it rolls on the inner wall surface of the guide rail 59, and the movement to the front-back direction of the raising / lowering frame 50 is controlled. The guide roller 58 has a rotational axis along the front-rear direction, and is disposed between the guide rollers 57 adjacent in the vertical direction. And it rolls on the inner wall surface of the guide rail 59, and the movement to the left-right direction of the raising / lowering frame 50 is controlled.

  An elevating drive shaft 60 is provided between the lower portions of the left and right side frames 51 so as to be rotatable around the axis, and pinion gears 61 are provided at both ends of the elevating drive shaft 60 and outside the side frames 51. Is installed. A speed reducer 62 and a lifting motor 63 are provided on the lower left side of the lifting frame 50, and the lifting drive shaft 60 is rotationally driven by the lifting motor 63 via the speed reducer 62. A rack 64 in which a plurality of teeth are arranged along the guide rail 59 is provided at the rear portion of the guide rail 59, and the pinion gear 61 is engaged with the rack 64.

  Accordingly, when the lift motor 63 is driven, the pinion gear 61 rolls up and down along the rack 64 by the rotation of the lift drive shaft 60. At this time, the guide rollers 57 and 58 that roll along the inner wall surface of the guide rail 59 restrict the movement of the elevating frame body 50 in the front-rear and left-right directions, and the elevating frame body 50 moves up and down stably.

  As shown in FIG. 3, the lower frame 53 supports a swing mechanism 6C. That is, the swinging mechanism 6C includes swinging frames 70 and 70 made of plate-like members arranged facing left and right, and an extending portion 70a extending downward is formed in the lower part thereof. A bearing portion 70b having a hole penetrating in the left-right direction is formed at the distal end portion (lower end portion) of the extending portion 70a, and the round bar-shaped lower frame 53 of the elevating frame body 50 is inserted into the hole. Yes. The lower frame 53 constitutes the swing axis of the swing frame 70. The swing frame 70 is rotatably supported by the lower frame 53 at the bearing portion 70b, and the lower frame 53 is centered. It can swing back and forth. As described above, the lower frame 53 is formed of a round bar-like pole, and has a preferable shape from the viewpoint of reducing the weight while securing the strength for supporting the swing mechanism 6C.

  A rectangular support plate 71 is disposed between the left and right swing frames 70, and four corners of the support plate 71 are fastened to the left and right swing frames 70 with bolts 71a. The treatment mechanism 6 </ b> A described above is arranged behind the support plate 71 and supported by the support plate 71. Note that through holes (not shown) are formed on the support plate 71 on the left and right, and the arm 11 provided in the treatment mechanism 6A protrudes forward of the support plate 71 through the through holes.

  On the other hand, intermediate idle reduction units 73 and 74 for swinging the treatment mechanism 6 </ b> A supported by the swing frame 70 are attached to the left and right lower portions of the upper frame 52. 4 is a perspective view of the intermediate idle reduction unit 73 on the left side, and shows a configuration when viewed from the side opposite to that of FIG. Since the intermediate idle reduction unit 74 on the right side has a symmetrical shape with the intermediate idle reduction unit 73 described below with reference to FIG. 4, detailed description regarding the shape is omitted.

  As shown in FIG. 4, the intermediate idle reduction unit 73 includes a case 75, an intermediate gear 76 that is supported in the case 75 and rotates integrally, and a rack drive gear 77. The case 75 has a rectangular gate shape when viewed from the back, and includes a left and right side wall portion 78 and an upper wall portion 79 connecting the upper portions of the side wall portion 78. Each is formed with a number of recesses 80 for lightening, and ribs 81 project between the recesses 80 and 80. In addition, a rectangular rib 82 is provided in a rear view so as to be connected to the upper part of the inner wall surface facing the left and right side wall parts 78 and the lower surface of the upper wall part 79. As a result, the case 75 achieves weight reduction and secures strength.

  A rotating shaft 83 is rotatably supported at the lower part of the left and right side wall portions 78 with the axis oriented in the left and right direction, and the intermediate gear 76 and the rack drive gear (pinion) 77 are interposed between the left and right side wall portions 78. The rotary shaft 83 is supported.

  Such an intermediate idle reduction unit 73 has two screw holes 85 arranged in the front and rear at the upper portion of the upper wall portion 79 of the case 75. The intermediate idle reduction unit 73 has a screw 86 passed through a screw hole (not shown) provided in the upper frame 52 of the elevating frame body 50 from above, and is screwed into the screw hole 85 of the case 75, thereby It is fixed to the lower part of the frame 52 (see FIG. 3).

  As shown in FIG. 3, a swinging motor 90 and a worm speed reducer 91 are attached to the upper part of the left side frame 51 of the lifting frame 50. The worm reducer 91 is connected to the output shaft of the swinging motor 90, decelerates and outputs the rotation of the output shaft, and this output is transmitted to the transmission shaft 92 (see also FIG. 4). The transmission shaft 92 is provided with the axis in the left-right direction, the left end is connected to the worm reducer 91, and the right end is rotatably supported by the upper part of the right side frame 51 of the lifting frame 50. Has been.

  FIG. 5 is a side view of the massage mechanism 6 with the right side frame 51 removed. As shown in FIGS. 4 and 5, the transmission shaft 92 described above is supported by the case 75 of the intermediate idle reduction unit 73. As shown in FIG. 4, two intermediate gears 93, 93 (only the left intermediate gear 93 is shown in FIG. 4) provided coaxially on the transmission shaft 92 are connected to the intermediate idle reduction unit 73. The intermediate gear 76 meshes with the intermediate gear 76. More specifically, the left and right side wall portions 78 of the case 75 are formed with bearing portions 94 formed by notching the rear portions thereof, and the transmission shaft 92 extending to the left and right is rotatably supported by the bearing portions 94. . An intermediate gear 93 is supported on the transmission shaft 92 at a position sandwiched between the left and right side wall portions 78 of the intermediate idle reduction unit 73, and the intermediate gear 93 is inclined upward to the intermediate gear 76 of the intermediate idle reduction unit 73. It is engaged from behind.

  An approximately arc-shaped rack 95 is attached to the upper part of the left and right swing frames 70 that support the treatment mechanism 6A. The rack 95 is configured by arranging a plurality of teeth on a circumference having a radius D with the axis of the lower frame 53 supporting the lower portion of the swing frame 70 as the center. A rack drive gear 77 included in the intermediate idle reduction unit 73 meshes with the rack 95 from above (see FIG. 3).

  In the swing mechanism 6 </ b> C having such a configuration, the rotation of the swing motor 90 is transmitted to the rack 95 via the worm speed reducer 91, the transmission shaft 92, and the intermediate idle speed reduction unit 73. At this time, the rotational speed of the swinging motor 90 is appropriately reduced and transmitted to the rack drive gear 77 through the worm speed reducer 91 and the intermediate gears 76 and 93. When the rack drive gear 77 rotates, the rack 95 that meshes with the rack drive gear 77 moves in the front-rear direction. As a result, the swing frame 70 that supports the treatment mechanism 6A swings back and forth about the lower frame 53 (see arrow 100 in FIG. 5). At this time, the portion surrounded by the hatching shown in FIG. 5, that is, the treatment mechanism 6A, the swing frame 70, and the rack 95 swing back and forth.

  The chair-type massage machine 1 provided with the massaging mechanism 6 including the swing mechanism 6C in the backrest part 3 appropriately applies the treatment element 10 according to various body shapes, particularly the bending of the back, for each user. It can be brought into contact with the back to give a stimulus.

  According to the massage mechanism 6 configured as described above, the round bar-shaped lower frame 53 constitutes the lower part of the lifting frame body 50 included in the lifting mechanism 6B and also serves as the swinging shaft of the swinging mechanism 6C. The swing shaft is separate from the lifting drive shaft 60 (see FIG. 3) of the lifting mechanism 6B. Therefore, the reduction of the number of parts is appropriately realized.

  Further, the treatment mechanism 6A supported by the swing frame 70 is supported only by the intermediate idle reduction unit 73 and the lower frame 53 from above and below, and is supported by the other part of the lifting frame body 50. There is no. The lower frame 53 is detachably attached to the side frame 51 with left and right screws 54. Therefore, by removing the screw 54, it is possible to remove the treatment mechanism 6A, more specifically, the portion surrounded by hatching in FIG. 5 while being supported by the swing frame 70 (see FIG. 5). No. 101), assembly / disassembly work is easy, and maintenance is excellent.

  FIG. 6 is a perspective view showing the configuration of the massage mechanism 200 having another configuration, and shows the configuration when viewed from the upper left front. The massage mechanism 200 includes a treatment mechanism 200A that realizes the squeezing and tapping operations by the treatment element 210, an elevating mechanism 200B that moves the treatment mechanism 200A up and down, and a swinging mechanism 200C that swings back and forth. . The elevating mechanism 200B included in the massage mechanism 200 includes left and right side frames 251 and 251 made of a plate material, an upper frame 252 made of a plate material supported between and supported by the upper portions of the side frame 251 and side portions. An elevating frame body 250 constituted by a lower frame (oscillating shaft) 253 comprising a round bar-like pole that is installed between the lower portions of the frame 251 and supports them is provided. The side frame 251 is formed with a narrow width at the center portion in the longitudinal direction to reduce the weight, but in addition to or instead of this, the side portion of the massage mechanism 6 shown in FIG. You may form the hole for meat removal like provided in the flame | frame 51. FIG.

  A through hole 255 is formed in the lower part of the side frame 251 so as to penetrate the screw 254 through the left and right direction. In addition, screw holes 253a screwed with screws 254 are formed at both ends of the lower frame 253 formed of a round bar-like pole so as to open to the left and right outwards. The lower frame 253 is screwed into the screw hole 253a from the outside with the through hole 255 sandwiched between the screw hole 253a from the inner side in the left-right direction to the through hole 255 of the side frame 251. Fixed to the side frame 251. Conversely, the lower frame 253 can be easily removed from the side frame 251 by removing the left and right screws 254.

  Guide rollers 257 and 258 are rotatably attached to the left and right side frames 251. These guide rollers 257 and 258 are capable of rolling along guide rails 259 that constitute the lifting frame 9 (see FIG. 1) disposed in the backrest 3 of the chair type massage machine 1. The movement of the lifting frame body 250 in the left-right direction is restricted.

  An elevating drive shaft 260 is provided between the lower portions of the left and right side frames 251 so as to be rotatable around the axis, and pinion gears 261 are provided at both ends of the elevating drive shaft 260 and outside the side frames 251. Is installed. A speed reducer 262 and a lifting motor 263 are provided at the lower right side of the lifting frame body 250, and the lifting drive shaft 260 is rotationally driven by the lifting motor 263 via the speed reducer 262. Further, a rack 264 in which a plurality of teeth are arranged along the guide rail 259 is provided at the rear portion of the guide rail 259, and the pinion gear 261 meshes with the rack 264.

  Therefore, when the lifting motor 263 is driven, the pinion gear 261 rolls up and down along the rack 264 by the rotation of the lifting drive shaft 260. At this time, the guide rollers 257 and 258 rolling along the inner wall surface of the guide rail 259 restrict the movement of the elevating frame body 250 from front to back and from side to side, and the elevating frame body 250 moves up and down stably.

  As shown in FIG. 6, a swing mechanism 200 </ b> C is supported on the lower frame 253. That is, the rocking mechanism 200C includes rocking frames 270 and 270 made of plate-like members arranged facing each other on the left and right, and an extending portion 270a extending downward is formed in the lower part thereof. A bearing portion 270b having a hole penetrating in the left-right direction is formed at the distal end portion (lower end portion) of the extending portion 270a, and the round bar-shaped lower frame 253 of the elevating frame body 250 is inserted into the hole. Yes. The lower frame 253 constitutes the swing axis of the swing frame 270. The swing frame 270 is rotatably supported by the lower frame 253 at the bearing portion 270b, and the lower frame 253 is the center. It can swing back and forth.

  An I-shaped support plate 271 is disposed between the left and right swing frames 270, and four corners of the support plate 271 are fastened to the left and right swing frames 270 with bolts 271a. The treatment mechanism 200A described above is arranged behind the support plate 271 and supported by the support plate 271. The arm 211 provided in the treatment mechanism 200A protrudes forward through the left and right through holes formed by the left and right swing frames 270 and the support plate 271 therebetween.

  On the other hand, intermediate idle reduction units 273 and 274 for swinging the treatment mechanism 200 </ b> A supported by the swing frame 270 are attached to the left and right lower portions of the upper frame 252. FIG. 7 is a perspective view of the right intermediate idle reduction unit 274 when viewed from the diagonally left front, and FIG. 8 shows the same intermediate idle deceleration unit 274 when viewed from the diagonally left rear. It is a perspective view which shows a structure. Note that the left intermediate idle reduction unit 273 has a symmetrical shape with the intermediate idle reduction unit 274 described below with reference to FIGS.

  As shown in FIGS. 7 and 8, the intermediate idle reduction unit 274 includes a case 275, and an idle gear 276 and a rack drive gear 277 that are supported in the case 275 and rotate integrally. The case 275 includes a left case portion 275a that forms a left side wall and a right case portion 275b that forms a right side wall. An extending portion 275c extends from the front and rear portions of the left case portion 275a to the right case portion 275b, and the distal end of the extending portion 275c is fastened to the right case portion 275b with a screw 275d. A predetermined space 278 is formed between the H.275a and the right case portion 275b.

  Below the space 278, there is provided a rotating shaft 283 whose axis is directed in the left-right direction while being supported by the left case portion 275a and the right case portion 275b. The idle gear 276 and the rack drive gear 277 described above are supported by the rotating shaft 283 and accommodated in the space 278.

  Such an intermediate idle reduction unit 274 has screw holes 285 in the upper part of the case 275, more specifically in the upper parts of the left case part 275a and the right case part 275b. The intermediate idle reduction unit 274 is configured such that a screw 286 passed from above through a screw hole provided in the upper frame 252 of the elevating frame body 250 is screwed into the screw hole 285 of the case 275, whereby the upper frame 252. (See also FIG. 6).

  Further, the intermediate idle reduction unit 274 has a through-hole 280 in the left-right direction at the front part of the case 275, more specifically at the front part of each of the left case part 275a and the right case part 275b. A round bar-shaped pole 281 extending in the left-right direction is passed through the through-hole 280, and both ends of the pole 281 are fixed to the left and right side frames 251 by screws 281a, respectively.

  As shown in FIG. 6, a swing motor 290 and a worm speed reducer 291 are attached to the upper part of the right side frame 251 of the elevating frame body 250. The worm speed reducer 291 is connected to the output shaft of the swinging motor 290, decelerates and outputs the rotation of the output shaft, and this output is transmitted to the transmission shaft (rotary shaft) 292. The transmission shaft 292 is provided above the treatment mechanism 200 </ b> A with its axis in the left-right direction, the right end is connected to the worm speed reducer 291, and the left end is the upper portion of the left side frame 251 of the lifting frame 250. Is supported in a freely rotatable manner.

  FIG. 9 is a side view of the massage mechanism 6 with the right side frame 251 removed. As shown in FIGS. 7 to 9, the transmission shaft 292 described above is supported by the case 275 of the intermediate idle reduction unit 274. As shown in FIGS. 7 and 8, the transmission gear 293 provided coaxially with the transmission shaft 292 meshes with the idle gear 276 of the intermediate idle reduction unit 274. More specifically, the left case portion 275a and the right case portion 275b of the case 275 are formed with a bearing portion 294 formed of a recess whose rear portion is notched and opened rearward, and the transmission shaft 292 extending to the left and right is the bearing. The portion 294 is fitted from behind and is rotatably supported. The transmission shaft 292 supports a transmission gear 293 located in a space 278 in the case 275 of the intermediate idle reduction unit 274, and the transmission gear 293 is supported on the idle gear 276 of the intermediate idle reduction unit 274 from above. Meshed. The transmission gear 293 is fixed to the transmission shaft 292 by a locking tool (not shown), and the transmission gear 293 can move in the axial direction of the transmission shaft 292 by removing the locking tool.

  As shown in FIG. 6 or FIG. 9, an approximately arc-shaped rack 295 is attached to the upper part of the left and right swing frames 270 that support the treatment mechanism 200A. The rack 295 is configured by arranging a plurality of teeth on a circumference of a radius D centering on the axis of the lower frame 253 that supports the lower portion of the swing frame 270. A rack drive gear 277 included in the intermediate idle reduction unit 274 meshes with the rack 295 from above.

  In the case of the swing mechanism 200C described above, as with the swing mechanism 6C shown in FIG. 5, the idle gear 276 is disposed substantially below the transmission gear 293, and the rack drive gear 277 that rotates integrally with the idle gear 276. Is arranged so as to be close to the lower frame 253 that forms the swing axis with respect to the transmission gear 293 (see FIGS. 7 and 8). Therefore, the distance D between the rack 295 and the lower frame 253 with which the rack drive gear 277 meshes from above is relatively small, and the swing distance (swing distance) of the rack 295 is shortened.

  In the swing mechanism 200C having such a configuration, the rotation of the swing motor 290 is transmitted to the rack 295 via the worm speed reducer 291, the transmission shaft 292, and the intermediate idle speed reduction unit 274. At this time, the rotational speed of the swing motor 290 is appropriately reduced and transmitted to the rack drive gear 277 through the worm speed reducer 291, the idle gear 276, and the transmission gear 293. When the rack drive gear 277 rotates, the rack 295 that meshes with the rack drive gear 277 moves in the front-rear direction. As a result, the swing frame 270 that supports the treatment mechanism 200 </ b> A swings back and forth about the lower frame 253.

  When the massage mechanism 200 including the rocking mechanism 200C configured as described above is provided in the backrest part 3 of the chair type massage machine 1, similar to the massage mechanism 6 already described, a difference is made for each user. The treatment element 210 can be appropriately brought into contact with the back according to various body shapes, in particular, the degree of bending of the back, so that stimulation can be given.

  In addition, the case 275 of the intermediate idle reduction unit 274 included in the swing mechanism 200C is supported not only by the upper frame 252 of the lifting frame 250 but also by a pole 281 that is passed through the through hole 280. It is supported from behind by the transmission shaft 292. Accordingly, a part of the pressure received by the treatment element 210 from the back of the user is received by the upper frame 252, the pole 281, the swing frame 270 that supports the treatment mechanism 200 A, the rack 295, and the intermediate idle reduction unit 274. And is properly received by the transmission shaft 292.

  Also in such a massage mechanism 200, the intermediate idle deceleration units 273 and 274 can be attached and detached relatively easily. A specific procedure will be described. First, the screw 286 is removed to free the intermediate idle reduction unit 274 from the upper frame 252, and the screw 275d is removed to divide it into left and right. Further, the intermediate idle reduction unit 274 can be detached from the massage mechanism 200 in the left and right divided states by removing the screw 281a and extracting the pole 281 from the through hole 280. The other intermediate idle reduction unit 274 can be removed by the same procedure, and the attachment procedure can be performed in the reverse order described above.

  Furthermore, the treatment mechanism 200 </ b> A supported by the swing frame 270 is only supported from above and below by the intermediate idle reduction units 273 and 274 and the lower frame 253. Therefore, just by removing the left and right screws 254 for fixing the lower frame 253, it can be removed downward, as with the treatment mechanism 6A of the massage mechanism 6 shown in FIG. Excellent maintenance.

  The present invention can be applied to a massage mechanism provided in a backrest portion of a chair-type massage machine for treating a user's body, and in particular, appropriately reduces the number of parts and reduces the weight. Can be applied to gain massage mechanism.

It is a perspective view which shows the whole structure of the chair type massage machine provided with the massage mechanism which concerns on embodiment of this invention. It is the disassembled perspective view which showed typically the partial structure of this treatment mechanism for demonstrating the operation | movement principle of the treatment mechanism which performs treatment operation | movement, such as a fist operation | movement and a beat operation | movement, in the massage mechanism shown in FIG. It is a perspective view which shows the structure of the massage mechanism shown in FIG. 1, and shows a structure when it sees from the upper right front. FIG. 4 is a perspective view of a left intermediate idler reduction unit provided in the massage mechanism shown in FIG. 3 and shows a configuration when viewed from the rear. FIG. 4 is a side view when the massage mechanism shown in FIG. 3 is viewed from the right side, with the right side frame removed. It is a perspective view which shows the structure of the massage mechanism which comprises another structure. FIG. 8 is a perspective view of a right intermediate idle reduction unit provided in the massage mechanism shown in FIG. 7, showing a configuration when viewed from the diagonally left front. FIG. 9 shows a configuration when the intermediate idle reduction unit shown in FIG. 8 is viewed obliquely from the left rear. It is a side view when the massage mechanism shown in FIG. 7 is seen from the right side, Comprising: The right side frame is removed and shown. It is a perspective view which shows an example of the conventional massage mechanism which is provided in this backrest part of a chair type massage machine provided with a backrest part, and can treat the body of the seated user.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chair type massage machine 3 Backrest part 6 Massage mechanism 6A Treatment mechanism 6B Lifting mechanism 6C Oscillation mechanism 9 Lifting frame 10 Treatment element (treatment part)
50 Lifting frame body 51 Side frame 51a Hole 52 Upper frame 53 Lower frame 53a Screw hole 54 Screw 55 Through hole 57, 58 Guide roller 59 Guide rail 60 Lifting drive shaft 61 Pinion gear 63 Lifting motor 64 Rack 70 Swing frame 70a Extension Installation portion 70b Bearing portion 73, 74 Intermediate idle reduction unit 75 Case 76 Intermediate gear 77 Rack drive gear (pinion)
78 Side wall part 79 Upper wall part 90 Oscillating motor 92 Transmission shaft 93 Intermediate gear 94 Bearing part 95 Rack 200 Massage mechanism 200A Treatment mechanism 200B Lifting mechanism 200C Oscillation mechanism 210 Treatment element (treatment part)
250 Lifting frame body 251 Side frame 252 Upper frame 253 Lower frame 253a Screw hole 254 Screw 255 Through hole 257,258 Guide roller 259 Guide rail 260 Lifting drive shaft 261 Pinion gear 263 Lifting motor 264 Rack 270 Swing frame 270a Extension part 270b Bearing portion 273, 274 Intermediate idle reduction unit 275 Case 275a Left case portion 275b Right case portion 276 Idle gear 277 Rack drive gear 290 Oscillating motor 292 Transmission shaft 293 Transmission gear 294 Bearing portion 295 Rack

Claims (3)

A massage mechanism is provided in the backrest portion of a chair type massage machine having a backrest portion, and treats the body of the user,
A treatment unit for stimulating the user, a swing mechanism that supports the treatment unit and swings in the front-rear direction, and a lift that supports the swing mechanism and moves up and down along the backrest With a mechanism,
The elevating mechanism has side frames arranged on the left and right sides, and an intermediate frame that is installed between the side frames and supports both.
The massage mechanism, wherein the swing mechanism is supported so as to be swingable with respect to an intermediate frame of the elevating mechanism.   The swing mechanism includes a swing frame that supports the treatment portion, and the swing frame is provided with a bearing portion through which the intermediate frame is inserted. Massage mechanism. The intermediate frame of the lifting mechanism is detachably connected to the side frame,
3. The massage according to claim 1, wherein the treatment mechanism supported by the swing frame is configured to be detachable from the lifting mechanism by removing the intermediate frame from the side frame. mechanism.

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