JP4027026B2 - Massage machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a massage machine provided with a footrest in front of a seat portion of a chair, and more particularly to massage for a treatment site such as a foot placed on the footrest.
[0002]
[Prior art]
Conventionally, this type of massage machine is generally referred to as a chair type massage machine, and as shown in Japanese Patent Laid-Open No. 10-295765, the backrest portion of the chair is located from the neck of the user to the waist. There is a built-in massage device for massage massage, tapping massage, rolling massage, etc., and sufficient massage is possible over a wide range, but there is a vibrator in the footrest provided in front of the seat It is only built-in and massaged by vibration, and the position of the vibrator remains fixed, and continuous stimulation is given to the same part, so it becomes painful and tired. Couldn't massage over. In addition, this massage by vibration could not sufficiently heal the fatigue of the foot placed on the footrest.
[0003]
[Problems to be solved by the invention]
The present invention enables massage by driving the treatment element while automatically changing the position in the front-rear direction of the treatment element that massages the treatment site placed on the footrest, as well as being able to concentrate massage at the same location. An object of the present invention is to provide a massage machine capable of massaging over a wide range without the harmful effects caused by overstimulating the same part.
[0004]
In addition, the present invention makes it possible to drive the treatment element and move the treatment element in the front-rear direction by an inexpensive mechanism, and to move in the front-rear direction while driving the treatment element and the treatment element. It is an object to provide a massage machine capable of selecting a mode with a simple configuration.
[0005]
Furthermore, this invention makes it a subject to provide the massage machine which improves a massage effect by giving hit | damage massage to treatment areas, such as a foot | leg, and can fully heal fatigue.
[0006]
Furthermore, this invention makes it a subject to provide the massage machine which can give a tapping massage to the two places of the front-back direction of a foot | leg simultaneously, and can apply to a right-and-left leg | foot simultaneously.
[0007]
[Means for Solving the Problems]
In the present invention, a footrest is provided in front of a seat portion of a chair, and a treatment element for massaging a treatment site placed on the footrest is provided in the footrest, and a driving means and a treatment element for driving the treatment element are provided. A moving means for reciprocating in the front-rear direction with respect to the footrest is provided, and a mode in which only the driving means is driven and a mode in which the driving means and the moving means are driven simultaneously are provided. The driving means and the moving means are driven by a common motor. The driving means transmits the power of the motor via a reduction mechanism regardless of the rotation direction, and transmits the power to the moving means via a one-way clutch that transmits only the rotation of the motor in one direction, By selecting the rotation direction of the motor, the mode for driving only the driving means and the mode for simultaneously driving the driving means and the moving means are provided. Those having a selection means for selecting the word.
[0008]
With this configuration, if the mode for driving only the driving means is selected, the same part can be massaged in a concentrated manner. If the mode for simultaneously driving the driving means and the moving means is selected, the position of the treatment element in the front-rear direction is automatically changed. The massager can be massaged by driving the massager, and it can be massaged over a wide range without the harmful effects of overstimulating the same part.
Further, since the driving means and the moving means are driven by a common motor, the treatment element can be driven and the treatment element can be moved in the front-rear direction by an inexpensive mechanism.
Furthermore, a mode in which only the driving means is driven and a mode in which the driving means and the moving means are driven simultaneously can be realized with a simple configuration in which the rotation direction of the motor is selected.
[0012]
Further, according to the present invention, the treatment element is constituted by a hitting ball which is attached to a swing lever and hits a treatment site placed on the footrest by swinging of the swing lever, and the swing lever is swung by the driving means. It is made to let you.
[0013]
With this configuration, it is possible to give a hitting massage to the treatment site with a hitting ball and enhance the massage effect compared to vibration massage by a vibrator.
[0014]
Further, the swing lever is pivotally supported at the center and extends in the front-rear direction, and hitting balls are attached to both front and rear ends of the swing lever. In addition, a pair of left and right swing levers are provided.
[0015]
With such a configuration, hitting massage can be simultaneously applied to two places in the front-rear direction of the foot by the hitting balls attached to the swing lever with a space in the front-rear direction, and a wide range of the foot can be massaged. You can also massage your left and right feet at the same time.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
A chair type massage machine in which the massage machine of the present invention is shown as an example will be described with reference to FIGS. Here, for the sake of convenience, the toe side of the user sitting on the chair is referred to as the front, and the waist side is referred to as the back. FIG. 1 shows a side view of a chair type massage machine 1, which is provided on a seat part 2, a backrest part 3 connected to the back of the seat part 2, and both left and right sides of the seat part 2. And a support leg 5 for supporting the seat part 2, the backrest part 3, the armrest part 4, and a footrest 6 rotatably connected to the front end of the seat part 2. The backrest part 3 can be raised and lowered with respect to the seat part 2, and a massage device (a massage apparatus, a tapping massage, a rolling massage, etc.) is performed on the inside from the neck of the user sitting on the chair to the waist. (Not shown). This massage device is well known and will not be described.
[0017]
The footrest 6 is pivotally connected to the front end of the seat portion 2. Specifically, the footrest 6 is formed at the left and right front ends of the seat frame 7 that forms the framework of the seat portion 2. The left and right rear ends of the footrest frame 8 are rotatably connected by a shaft 9. Then, the footrest 6 is lifted by the operation of the operation lever 10 described later until the footrest 6 is housed substantially vertically with respect to the seat 2 as shown in FIG. 1 and level and almost parallel to the seat 2 as shown in FIG. Held in state. The footrest 6 incorporates a massage device for massaging a foot placed on the footrest described later. FIG. 1 is a state in which the seat portion 2 is covered with a cover sheet, and FIG. 2 is a view in which the skeleton is understood except for the cover sheet.
[0018]
Here, the rotation operation mechanism of the footrest 6 will be described. Supporting pieces 11, 11 are fixed to the left and right side surfaces of the seat frame 7, and an operating shaft 12 is pivotally supported between the supporting pieces 11, 11, and the operating lever is connected to one end of the operating shaft 12. 10 is fixed. One end of the link lever A13 is fixed to the operation shaft 12, and one end of the link lever B14 is pivotally supported by the support shaft 15 at the other end of the link lever A13. A pair of link levers A13 and B14 are provided on the left and right of the operation shaft 12. The other end of the link lever B14 is pivotally supported by the shaft 16 on the left and right side surfaces of the footrest frame 8.
[0019]
One end of an urging lever 17 is fixed to the central portion of the operating shaft 12, and a gas spring in which high-pressure gas is sealed is inserted between the other end of the urging lever 17 and the support leg 5 of the massage machine. Both ends of 18 are pivoted. The gas spring 18 always urges the urging lever 17 clockwise in FIG. That is, the operation lever 10 is also urged clockwise.
[0020]
In such a configuration, when the operation lever 10 is rotated clockwise in the drawing from the storage state of FIG. 1, the footrest 6 is rotated clockwise via the link lever A13 and the link lever B14 and gradually lifted. As a result, when the connecting support shaft 15 of the link lever A13 and the link lever B14 is above the line connecting the operating shaft 12 and the pivot shaft 16 at the other end of the link lever B14, the footrest tries to rotate counterclockwise. By this movement, one end portion of the link lever B14 engages with the other end portion 19 of the link lever A13, and the footrest is self-locked at this position.
[0021]
The link lever A13 has a U-shaped bowl shape with an open upper surface, and the link lever B14 is pivotally connected to the spindle 15 by being located in this bowl. The self-lock is in a state where one end of the link lever B14 is in contact with the bottom of the collar of the link lever A13.
[0022]
At this time, since the gas spring 18 is set so as not to be fully extended with remaining power, the operation lever 10 and the link lever A13 are urged clockwise. Therefore, the self-locking state is stable, and the link lever A13 is rotated counterclockwise by the impact of the foot placed on the footrest 6 so that the storage state as shown in FIG.
[0023]
Even if the massage device is built into the footrest 6 and becomes heavy, the operation lever 10 is urged clockwise by the gas spring 18 (the direction in which the footrest 6 is lifted), so the operation necessary to lift the footrest is required. Force can be reduced and light operation is possible.
[0024]
To store the footrest 6, the link lever A13 rotates counterclockwise against the gas spring 18 by rotating the operation lever 10 counterclockwise, and the footrest 6 is stored as shown in FIG. The In this stored state, the connecting point 21 between the upper end of the gas spring 18 and the biasing lever 17 is positioned slightly above the line connecting the operating shaft 12 and the lower pivot point 20 of the gas spring 18. Is biased counterclockwise, whereby the footrest 6 is biased in the storage direction and is not lifted by the gas spring.
[0025]
In addition, a pair of link levers A13 and B14 are provided on the left and right, and when the footrest 6 is lifted, the footrest is supported by the pair of left and right link levers A13 and B14. Even if the position of the foot placed on top is biased to one side, the footrest can be supported horizontally without tilting. The link levers A13 and B14 also serve to reinforce the footrest frame 8.
[0026]
Next, the inside of the footrest 6 will be described.
[0027]
The footrest frame 8 has a stepped hook shape as shown in FIG. 3 as a basic form as viewed from the front. Guide rails 25 having a U-shaped cross section are integrally formed at both left and right ends thereof. The rear end of the guide rail 25 is pivotally supported by the seat frame 7 by the shaft 9. The shaft 16 that pivotally supports the other end of the link lever B14 is mounted between a support piece 27 cut and raised below the left and right horizontal surfaces 26 of the footrest frame 8 and the left and right side surfaces of the footrest frame.
[0028]
U-shaped slide portions 29 at both left and right ends of the base frame 28 are fitted to the outside of the guide rail 25 of the footrest frame 8 so as to embrace the guide rail 25. The slide portion 29 can slide in the front-rear direction along the guide rail 25. Duracon resin spacers 30 and 31 are interposed between the slide portion 29 and the guide rail 25 so as to be easily slid when sliding. The spacer 30 is attached to the guide rail 25 side, and the spacer 31 is attached to the slide portion 29 side.
[0029]
Although not shown, a fixing means is provided between the slide portion 29 and the guide rail 25 so that the slide portion 29, that is, the base frame 28 can be fixed at an arbitrary position in the front-rear direction. By releasing the fixing means, the base frame 28 can be slid in the front-rear direction.
[0030]
The base frame 28 is equipped with a massage unit 32 as a feature of the present invention.
[0031]
Next, the configuration of the massage unit 32 will be described. The slide plate 33 is equipped with a motor and a power transmission mechanism that are driving sources of the massage unit 32. The slide plate 33 is attached to the base frame 28 so as to be slidable in the front-rear direction.
[0032]
More specifically, the base frame 28 has a large rectangular opening 34 at the center, and a slide plate holder 35 and a slide plate presser 36 are provided in the vertical direction along the left and right mouth edges of the opening 34. The left and right ends of the slide plate 33 are sandwiched by the gap between the slide plate receiver 35 and the slide plate presser 36 and slide with respect to these 35 and 36. The slide plate receiver 35 and the slide plate presser 36 are made of Duracon resin so that the left and right ends of the slide plate 33 can slide easily. The slide plate 33 is moved in the front-rear direction by moving means described later.
[0033]
A pair of left and right attachment frames 37 are fixed to the lower side of the slide plate 33, and a motor 38 is attached to the attachment frame 37. A small pulley 40 is fixed to one end of the shaft 39 of the motor 38 as shown in FIG. The shaft 43 of the large pulley 42 connected to the small pulley 40 via the belt 41 passes through a pair of mounting frames 37 and 37 and is rotatably supported by the frames 37 and 37. Eccentric bodies 44 that are eccentric with respect to the shaft are fixed to both end portions of the shaft 43 that protrude outward from the mounting frames 37, 37. A crank body 45 is rotatably supported on the outer periphery of the eccentric body 44. ing.
[0034]
A fixed shaft 46 is fixed between the mounting frames 37 and 37 located on the front side of the motor 38 in parallel with the motor shaft 39 and the shaft 43 of the large pulley through the mounting frames 37 and 37. One end of a swing arm 47 is pivotally supported at both ends of the fixed shaft 46 protruding outward from the mounting frames 37, 37. The swing arm 47 has a free end protruding upward from a hole 48 provided in the slide plate 33, and a central portion of a seesaw-type swing lever 49 is pivotally supported by the protruding free end.
[0035]
As is apparent from FIG. 4, the swing lever 49 extends in the front-rear direction around the central pivot 50, and has a seesaw type. A hitting ball 52 serving as a treatment element as shown in FIG. 3 is rotatably attached to the attachment shaft 51. As is clear from the above description, the swing lever 49 is provided in a pair of left and right, and hit balls 52 are attached to the front and rear of each swing lever 49, and there are four hit balls 52 in total.
[0036]
A central portion of the swing arm 47 and the crank body 45 are connected by a rod 53. The swing arm 47 side of the rod 53 is connected to the swing arm via a ball joint 54, and the other crank body 45 side is a support shaft penetrating a pair of ear pieces 55, 55 protruding from the crank body 45. 56 is pivotally supported.
[0037]
Between the rocking lever 49 and the rocking arm 47, there is provided balance holding means for holding the rocking lever 49 in a natural balanced state around the pivot 50. This balance holding means is composed of a linear spring material 57 as shown in FIG. One end portion 58 of the spring material 57 is inserted into the groove 59 and the tip thereof is bent, and the bent portion is inserted into a hole provided in the swing arm 47 and engaged. Reference numeral 60 denotes a screw for holding one end portion so that the one end portion 58 does not protrude from the groove 59. The other end 61 of the spring member 57 is bent in a round shape, is fitted on the outer periphery of a boss 62 provided on the swing lever 49, and is prevented from being removed by a seat plate 63 fixed to the boss 62. Here, the bent width H of the other end portion 61 of the spring material is made slightly smaller than the diameter of the boss 62. With such a spring material, the swing lever is held in a certain balanced position so that it does not hit anywhere in the natural state.
[0038]
In such a configuration, when the motor 38 rotates, the eccentric body 44 fixed to the shaft 43 via the small pulley 40, the belt 41, and the large pulley 42 rotates eccentrically, and the crank that is rotatably supported on the outer periphery of the eccentric body 44 The body 45 converts the rotational motion into a reciprocating motion as shown by the thick arrows in FIGS. 4 and 5, and the swing arm 47 pivotally supported by the fixed shaft 46 and the crank body 45 are connected by the rod 53. The reciprocating motion of the crank body 45 is transmitted to the swing arm 47, and the swing arm 47 is swung back and forth around the fixed shaft 46 as indicated by the thick arrow in FIG. Due to this swinging, the swing lever 49 pivotally supported at the free end of the swing arm 47 also swings around the central pivot 50.
[0039]
Accordingly, the hitting balls 52 pivotally supported at both front and rear ends of the swing lever 49 act so as to hit the foot placed on the footrest 6. At this time, since the hitting balls 52 are provided with an interval in the front-rear direction, the hitting massage can be given simultaneously to two places in the front-rear direction of the foot, and a wide range can be massaged. Moreover, since there are a pair of front and rear hitting balls 52, both feet can be massaged simultaneously.
[0040]
Here, the swinging arm 49, the rod 53, the crank body 45, the eccentric body 44, the shaft 43, the large pulley 42, the belt 41, the small pulley 40, the motor 38, and the like constitute drive means for swinging the swing lever 49. To do.
[0041]
The swing lever 49 is held in a certain balance position so that it does not hit anywhere in the natural state by the spring material 57 that is the balance holding means. Even if it is swung in a loaded state, it does not collide with the slide plate 33 and no collision sound is generated.
[0042]
Further, the other end portion 61 of the spring material 57 has a bent width H slightly smaller than the diameter of the boss 62 and is elastically fitted to the outer periphery of the boss 62 without any gaps. No abnormal noise is generated between the spring material 57 and the boss 62 during the movement.
[0043]
By the way, the fixed shaft 46, which is the pivot point of the swing arm 47, and the central pivot portion 50 of the swing lever 49, the pivot support portion 50 of the swing lever is located above the fixed shaft 46 and on the seat side. positioned. In such a positional relationship, when the foot is placed on the footrest as shown in FIG. 2 and the swing lever 49 is swung, the foot exerts a force to extend the tip from the knee as indicated by an arrow B by the hitting ball 52. receive. This force does not receive a force that lifts the tip of the knee from the hitting ball 52, that is, does not escape from the hitting ball 52, so that the hitting ball 52 can be firmly hit and a comfortable massage can be performed.
[0044]
Temporarily, the relationship between the fixed shaft 46 and the central pivot portion 50 of the swing lever 49 is that the pivot portion 50 of the swing lever is positioned above and in front of the fixed shaft 46 as shown in FIG. If there is, the hitting ball 52 receives a force that pushes the tip of the knee backward as indicated by an arrow C, and this force causes the tip of the knee to lift up from the hitting ball 52, so that the hitting cannot be made firmly. On the other hand, this is not the case with the positional relationship as shown in FIG. In FIG. 9, the bold arrow represents the swinging state of the swinging arm 47 as in FIG. 2.
[0045]
Next, the mounting and configuration of the hitting ball 52 will be described in detail. The hitting ball 52 is rotatably attached to the attachment shafts 51 at both the front and rear ends of the swing lever 49, but has a cylindrical shape and is made of an elastic body such as rubber. Then, as shown in FIG. 10, a sleeve 66 made of Duracon resin is press-fitted into the through hole from both ends of the central through hole 65, and the sleeve 66 and the mounting shaft 51 slide to freely rotate with respect to the mounting shaft 51. It has become.
[0046]
A groove 68 for fitting a C-ring 67 for preventing the hit ball 52 from coming off is formed at the tip of the mounting shaft 51, but as shown in FIG. 11, the hit ball 52 with the sleeve 66 press-fitted. The dimension D in the axial direction is longer than the dimension E from the root of the mounting shaft 51 to the groove 68. When the hitting ball 52 is mounted on the mounting shaft 51, the hitting ball 52 is inserted into the mounting shaft 51 in a state where the hitting ball 52 is contracted by T in the axial direction against its elasticity, and the C ring 67 is fitted into the groove 68 and is removed. Stop and complete the installation. Accordingly, there is no gap between the sleeve 66 and the C-ring 67, and no rattling noise is generated while the swing lever 49 is swinging.
[0047]
The axial length of the sleeve 66 that is press-fitted into the through-hole 65 is determined so that a space 70 is formed between the mounting shaft 51 and the hitting ball 52. The space 70 increases the elasticity of the hit ball and gives a soft impact to the foot.
[0048]
By the way, in general, when both feet are placed on the hitting ball 52, both feet are slightly expanded outward. Therefore, when massage is performed with the hitting ball 52 by swinging of the swing lever 49, both feet gradually spread outward due to the impact of the hitting ball, and the point of massage is shifted, and further, the hitting ball 52 may fall. Therefore, in the embodiment of the present invention, as apparent from FIGS. 3 and 10, the outer diameter of the hitting ball 52 is larger on the tip side than the root side of the mounting shaft 51, in other words, on the outer side than the inner side.
[0049]
By adopting such a structure, both feet are prevented from spreading outward, and the feet are prevented from falling from the hitting balls and the massage points being dragged.
[0050]
The shape of the hitting ball 52 can also prevent the massage point from being distorted by denting the central portion in the mounting axis direction as shown in FIG. In the case of this figure also, it is better to make the outer diameter G outside the inner outer diameter F larger.
[0051]
As described above, the slide plate 33 equipped with a motor as a drive source of the massage unit 32 is slidably attached to the base frame 28 in the front-rear direction. Next, the slide mechanism of the massage unit 32 is mounted. Will be explained.
[0052]
As shown in FIGS. 5 and 6, a rotating shaft 71 that is rotated from a motor 38 through a power transmission path described later is pivotally supported on the slide plate 33, and a rotating rod 72 is supported on the rotating shaft 71. And one end of the connecting rod 73 is rotatably connected to the rotating rod 72 by a support shaft 74, and the other end of the connecting rod 73 is connected to a tab 90 fixed to the front end of the base frame 28. It is connected so that it can rotate freely.
[0053]
The left and right ends of the slide plate 33 are sandwiched by the gap between the slide plate holder 35 and the slide plate presser 36 provided along the left and right mouth edges of the rectangular opening 34 of the base frame 28 to prevent the horizontal movement. Therefore, when the rotary shaft 71 rotates, the rotary motion is changed to the reciprocating motion in the front-rear direction of the slide plate 33 via the rotary rod 72 and the connecting rod 73. FIG. 6 shows a state in which the slide plate 33 has moved to the most rear side, and FIG. 7 shows a state in which the slide plate 33 has moved to the most front side.
[0054]
As the slide plate 33 reciprocates, the hit ball 52 also reciprocates in the front-rear direction and changes its position. Therefore, the portion to which the stimulus is given by the foot hitting ball 52 changes in the front-rear direction, and it is possible to prevent the adverse effects caused by giving too much stimulus to the same portion, for example, the pain or getting bored.
[0055]
By the way, as a mechanism for reciprocating the slide plate 33 in the front-rear direction, a screw shaft extending in the front-rear direction is provided, a nut that engages with the screw shaft is provided in the slide plate, and screw thrust generated by rotating the screw shaft by a motor is used. It is also possible to move it. In this case, the movement direction can be switched by detecting that the movement limit has been reached with a limit switch, stopping the motor, and then reversing the rotation direction. Continue moving in the previous direction. For this reason, since it overruns the limit switch, the movable range must be set with a margin. In addition, since the limit switch may be damaged, a mechanical stopper is required on the outer side, the movable range is more limited, and the space cannot be used effectively.
[0056]
However, in the mechanism in which the rotary rod 72 and the connecting rod 73 are reciprocated in the front-rear direction, the moving stroke is twice as long as the distance between the rotary shaft 71 and the one end support shaft 74 of the connecting rod 73. Never overrun. Therefore, the full stroke of the movable range can be set, and the space can be effectively used when such a moving mechanism is provided in a limited space such as a footrest. Furthermore, no limit switch or mechanical stopper is required, so it can be made inexpensive.
[0057]
In FIG. 6 and FIG. 7, the slide plate 33 is provided with a switch 76 that is operated by the rotary rod 72. This switch 76 is used to detect the position of the slide plate 33. It is not a limit switch for detecting the movement limit. The method of using this switch is not relevant to the present invention and will not be described. Reference numeral 91 denotes a guide plate that guides a wiring cord attached to the slide plate 33. The wiring cord 92 is processed between the guide plate 91 and the slide plate 33, thereby hindering the reciprocating movement of the slide plate 33. There has been no such thing.
[0058]
Next, the power transmission path to the rotating shaft 71 will be described. As shown in FIGS. 3 and 5, a small gear 77 is attached via a one-way clutch 78 on the opposite side of the large pulley shaft 43 that is decelerated from the motor 38 to the side on which the large pulley 42 is fixed. ing. The one-way clutch 78 engages with the shaft 43 when the shaft 43 rotates in one direction (referred to as the forward direction) and rotates the small gear 77 press-fitted to the outer periphery thereof, so that the shaft 43 rotates in the opposite direction (referred to as the reverse direction). When the motor is rotated to, the shaft 43 is not engaged and power is not transmitted to the small gear 77.
[0059]
A shaft 80 of the large gear 79 meshing with the small gear 77 is supported by the mounting frame 37 and extends between the pair of mounting frames 37 and 37 in parallel with the shaft 43, and a worm 81 is attached to the extended portion. The rotating shaft 71 is mounted on a worm wheel 82 that meshes with the worm 81, and the rotating shaft 71 is further decelerated and rotated by the worm 81 and the worm wheel 82. Reference numeral 83 denotes a gear box incorporating a worm 81 and a worm wheel 82, which is attached to the slide plate 33.
[0060]
With such a configuration, when the motor 38 rotates in one direction (forward rotation), the small gear 77 rotates due to the action of the one-way clutch 78 and the rotating shaft 71 rotates through the power transmission path. As described above, the slide plate 33 repeats reciprocation in the front-rear direction. Here, the motor 38, the small pulley 40, the large pulley 42, the shaft 43, the small gear 77, the one-way clutch 78, the large gear 79, the worm 81, the worm wheel 82, the rotating shaft 71, the rotating rod 72, the connecting rod 73, etc. The slide plate 33, that is, a hitting ball 52 as a treatment element is configured to move back and forth repeatedly in the forward and backward directions.
[0061]
At the same time, the swing arm 47 swings through the large pulley shaft 43, the crank body 45, and the rod 53, and the swing lever 49 swings and massages with the hitting ball 52. That is, while the driving means is driven to perform hitting massage, the moving means is driven to automatically change the position of the hitting ball in the front-rear direction.
[0062]
On the other hand, when the motor 38 rotates in the opposite direction (reverse rotation), the small gear 77 does not rotate and the slide plate 33 does not reciprocate due to the action of the one-way clutch 78. Only the swing lever 49 is swung by the driving means, and a hitting massage with the hitting ball 52 is performed. That is, only the driving means is driven, and a hitting massage is performed at the same position.
[0063]
In this way, by selecting the rotation direction of one motor 38, only the driving means is driven to perform the hitting massage at the same location, and both the driving means and the moving means are driven, and the position of the hitting massage is determined. The mode can be switched to a mode in which the motor is automatically changed. As a selection means for the two modes, it is only necessary to switch the rotation direction of the motor 38, and a simple configuration is possible. Further, since the driving means and the moving means can be driven by one motor, the cost can be reduced.
[0064]
By the way, the one-way clutch 78 is structurally engaged with the shaft when the shaft 43 rotates in the forward direction, and transmits the rotation to the small gear 77 on the driven side. If it rotates faster than the rotational speed of 43, a slip will be produced between the shafts, and a so-called driven side leading phenomenon will occur. In particular, when the footrest 6 is in a forward-down state where it is lowered forward, there is no problem when the slide plate 33 moves rearward. However, when the slide plate 33 moves forward, depending on the degree of forward-lowering of the footrest 6 Depending on the weight of the slide plate, there may be a pre-run phenomenon regardless of the rotation of the motor.
[0065]
Further, even when the shaft 43 rotates in the reverse direction and the one-way clutch 78 is free with respect to the shaft 43, the small gear 77 on the driven side slightly rotates due to slight friction with the shaft 43, and the slide plate 33 moves. May move involuntarily.
[0066]
The left and right ends of the slide plate 33 are slid between the slide plate receiver 35 and the slide plate presser 36, but in order to prevent the above-mentioned pre-run phenomenon and unintentional movement, FIG. As described above, the rubber slide 85 for braking the brake of the movement of the slide plate 33 is packed in the slide plate receiver 35, and an appropriate brake is applied to the slide plate 33 by friction with the sponge 85.
[0067]
As shown in FIGS. 3 and 4, the base frame 28 is provided with a synthetic resin driving section cover 86 that covers a driving mechanism section such as a motor 38. A synthetic resin top cover 87 is mounted on the base frame 28. Openings 88 are formed on the upper surface cover 87 on the left and right, and the hitting balls 52 are located in the openings 88. The upper portion of the upper cover 87 is covered with a cover sheet having cushioning properties.
[0068]
The base frame 28 is slidable in the front-rear direction along the guide rail 25 of the footrest frame 8 as described above, and can be pulled forward to the optimum position according to the length of the foot of the user. .
[0069]
As apparent from FIG. 3, the guide rails 25 at both left and right ends of the footrest frame 8 are held by the U-shaped slide portions 29 of the base frame 28, so that the base frame 28 also serves to reinforce the footrest frame 8. To do.
[0070]
The footrest 6 is assembled by assembling a massage unit 32 by incorporating a drive mechanism and a hitting ball into the slide plate 33, mounting the slide plate 33 on the base frame 28 from above, and attaching the base frame 28 forward to the footrest frame 8. Since it is mounted along the guide rail 25, the assemblability is good.
[0071]
【The invention's effect】
According to the invention of claim 1 of the present application, a mode for driving only the driving means for driving the treatment element and a mode for simultaneously driving a moving means for reciprocating the treatment element in the front-rear direction with respect to the footrest in addition to the driving means. Since it can be selected by the selection means, if the mode for driving only the driving means is selected, the same part can be massaged in a concentrated manner, and if the mode for simultaneously driving the driving means and the moving means is selected, the treatment element can be moved in the front-rear direction. The treatment element is driven while the position is automatically changed and massage can be performed over a wide range, and massage according to the needs of the user can be performed.
Moreover, since the driving means and the moving means are driven by a common motor, the treatment element can be driven and the treatment element can be moved in the front-rear direction by an inexpensive mechanism.
Furthermore, the power of the common motor is transmitted to the driving means via a speed reduction mechanism regardless of the rotation direction, and the power is transmitted to the moving means via a one-way clutch that transmits only the rotation of the common motor in one direction. Therefore, the selection means only needs to select the rotation direction of the motor, and the mode for driving only the drive means and the mode for simultaneously driving the drive means and the moving means can be realized with a simple configuration.
[0074]
According to the invention of claim 2 of the present application, since the treatment element is a hitting ball for hitting and massaging the foot placed on the footrest by swinging the swing lever, a high massage effect that cannot be obtained by massage with a vibrator is obtained. According to the invention of claim 3 of the present application, the center part of the swing lever is pivotally supported and extends in the front-rear direction, and is provided at both ends in the front-rear direction. Since the hit ball is attached, the hit ball can be applied to two places in the front-rear direction of the foot at the same time, and a wide range of the foot can be massaged sufficiently.
[0075]
According to the invention of claim 4 of the present application, such tapping massage can be simultaneously applied to the left and right feet.

[Brief description of the drawings]
FIG. 1 is a side view showing a stored state of a footrest of a massage machine according to the present invention.
FIG. 2 is a partially broken side view showing a state where the footrest of the massage machine is lifted horizontally to be massaged.
FIG. 3 is a cross-sectional view in which the footrest of the massage machine is cut in the left-right direction except for the cover sheet.
FIG. 4 is a side view showing the inside of the footrest of the massage machine as seen from one side, with the inside broken away.
FIG. 5 is a side view showing the inside of the footrest of the massage machine as seen from the opposite direction to FIG.
FIG. 6 is a plan view of the massage machine with the top cover of the footrest removed.
7 is a plan view of the massage machine with the top cover of the footrest removed, showing a state different from FIG. 6. FIG.
FIG. 8 is a side view showing the swing arm and the swing lever of the massage machine, as viewed from the direction of arrow H in FIG. 3;
FIG. 9 shows an embodiment in which the positional relationship between the swing arm and the swing lever is different in a state where the footrest of the massage machine is lifted horizontally and massaged.
FIG. 10 is a cross-sectional view showing a mounting state of a hitting ball of the massage machine.
FIG. 11 is an exploded view of a hitting ball and a mounting shaft of the massage machine.
FIG. 12 is a sectional view showing another embodiment of the hitting ball of the massage machine.
FIG. 13 is a cross-sectional view showing a holding structure of an end portion of the slide plate of the massage machine.
[Explanation of symbols]
2 seat 6 footrest 52 hitting ball (medical child)
32 Massage unit 38 Motor 40 Small pulley 41 Belt 42 Large pulley 43 Shaft 44 Eccentric body 45 Crank body 53 Rod 47 Swing arm 49 Swing lever 50 Center pivot 77 Small gear 78 One-way clutch 79 Large gear 81 Worm 82 Worm wheel 71 Rotating shaft 72 Rotating rod 73 Connecting rod 33 Slide plate

Claims (4)

In the case where a footrest is provided in front of the seat of the chair, a treatment element for massaging the treatment site placed on the footrest is provided in the footrest, and the driving means for driving the treatment element and the treatment element are attached to the footrest. There is provided a moving means for reciprocating in the front-rear direction, and a mode in which only the driving means is driven and a mode in which the driving means and the moving means are driven simultaneously, the driving means and the moving means are driven by a common motor, The power of the motor is transmitted to the driving means via a speed reduction mechanism regardless of the rotation direction, and the power is transmitted to the moving means via a one-way clutch that transmits only the rotation of the motor in one direction. by selecting the direction of rotation, a mode for driving only the driving means, a mode in which the moving means and the driving means simultaneously driven selection Massage machine comprising a selection means for. The treatment element includes a hitting ball attached to a swing lever to hit a treatment site placed on a footrest by swinging the swing lever, and the driving means swings the swing lever. The massage machine according to claim 1. The massage machine according to claim 2, wherein the swing lever is pivotally supported at the center and extends in the front-rear direction, and the hitting balls are respectively attached to both front and rear ends of the swing lever . The massage machine according to claim 3, comprising a pair of left and right swing levers .

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