JP4661302B2 - Massage machine - Google Patents

Description

  The present invention relates to a massage machine, and more particularly, to a massage machine that has left and right treatment elements that abut against a human body and perform massage, and the massage operation position of the treatment element with respect to the human body can be adjusted.

  There is a chair-type massage machine that allows the user to sit down, and the back of the massage machine is in contact with the back and neck of the user and performs massage operations such as hitting and rubbing Left and right treatment elements are provided.

  The position where the treatment element abuts on the human body and performs the massage operation is comfortable for the user, and a position where the massage effect is higher is preferable. Can be moved to.

Especially when performing massage operations such as the neck muscles, the treatment element needs to protrude greatly toward the human body, and for this reason, a massage machine has been developed in which the entire massage unit including the treatment element protrudes forward (for example, , See Patent Document 1).
JP 2004-202010 A

  As described above, the treatment element that abuts on the human body and massages can move its operation position by the operation of the user. However, in the conventional massage machine, the right and left treatment elements are arranged in series. The movement position of the left and right treatment elements could not be adjusted separately. For example, in the massage machine described in Patent Document 1, since the entire massage unit protrudes forward, the amount of forward movement can be increased, but the left and right treatment elements are adjusted in series, The operating position of the treatment element could not be moved independently.

  This has been a cause of the lack of satisfactory satisfaction for the recipients of the massage. In other words, the user has a specific and relatively detailed desire such that the individual is different in physique and body shape, and the part and the degree to which massage stimulation such as a tapping action is desired are different on the left and right. . However, conventional massage machines in which the operating positions of the left and right treatment elements can only be adjusted in series have often failed to satisfy the above-mentioned needs of the user.

  On the other hand, it is necessary to transmit a driving force for performing a massage operation such as a hitting operation to the left and right treatment elements, which makes it possible to move the operation positions of the left and right treatment elements separately. It was an obstacle.

  Therefore, the present invention has left and right treatment elements that abut against the human body and perform massage, and in the massage machine in which the massage operation position of the treatment element with respect to the human body can be adjusted in the height direction, the operation positions of the left and right treatment elements It aims to provide a massage machine that can be adjusted independently.

In order to achieve the above object, a first aspect of the present invention provides a massage machine having left and right treatment elements that abut against a human body and perform massage, and the treatment elements can perform a massage operation at different height positions with respect to the human body. A lifting frame that carries the left and right treatment elements and moves up and down, an eccentric shaft that is rotatably supported by the lifting frame and extends to the left and right, and one end connected to the eccentric shaft, corresponding to the left and right treatment elements Then, a pair of left and right upper link plates, first and second feed screws extending up and down along the up-and-down direction of the up-and-down frame, and the first and second feed screws are respectively screwed. first and second nut bodies, one end connected respectively to said nut body, said to correspond to the left and right treatment elements and left and right pair provided with lower link plate, said first and second nut Each body is A shaft extending in the left-right direction for coupling the click plate, and a movable bearing member along the shaft, and connecting the other ends of the lower link plate and the upper link plate, the coupling The treatment element is attached to a portion, the upper link plate is swung back and forth by rotation of the eccentric shaft, the treatment element performs a hitting operation, and the first and second feed screws rotate to And the second nut body independently moves up and down, and the angle between the upper link plate and the lower link plate is changed, so that the massage operation position of the treatment element with respect to the human body moves back and forth independently. The connecting portion of the upper link plate with respect to the eccentric shaft is configured to be slidable to the left and right by a spherical bearing movable along the eccentric shaft, and the first and second nuts of the lower link plate Vs body That each connecting portion, slidably configured to the right and left by connecting to the bearing member, and, separately from the first and second feed screws, extending vertically along the lifting direction of the lifting frame A third and fourth nut, and third and fourth nut bodies screwed into the third and fourth feed screws, respectively, and the third and fourth nut bodies ; and said bearing member before Symbol first and second nut bodies having respectively, connected by redirecting link mechanism for converting the vertical movement of the third and fourth nut to the left and right movement of the lower link plate, said first By the rotation of the third and fourth feed screws, the third and fourth nut bodies independently move up and down, and the first and second of the lower link plates connected by the direction changing link mechanism. Each connecting part with respect to the nut body of 2 moves left and right, The massage operation position of the treatment element with respect to the human body moves independently from left to right.

The invention of claim 2 is the invention of claim 1 , wherein the rotary shaft engages with the eccentric shaft and extends up and down along the lifting direction of the lifting frame, and between the eccentric shaft and the rotary shaft. An orthogonal transmission mechanism that transmits the rotational force of the rotary shaft as the rotational force of the eccentric shaft, and by rotating the rotary shaft, the eccentric shaft is rotated via the orthogonal transmission mechanism, and the treatment element performs a hitting operation. It is characterized by performing.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a linear guide extending in parallel with the feed screw is provided on the back surface of the feed screw extending vertically along the lifting direction of the lifting frame, and the nut The body is provided with a receiving recess that is fitted into the linear guide and is in sliding contact with the linear guide.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, a rotation amount detection that detects a rotation amount of the feed screw in the feed screw and outputs the detected rotation amount as electrical data. And a calculating means for calculating a massage operation position of the treatment element with respect to the human body for each of the right and left treatment elements based on rotation amount data of the feed screw from the rotation amount detection means. .

According to a fifth aspect of the present invention, in the invention of the fourth aspect , a massaging operation position of the treatment element with respect to the human body is changed by interposing a continuously variable transmission between the feed screw and a rotational drive source of the feed screw. It is characterized in that the speed to be adjusted can be adjusted.

The invention of claim 6 is the invention of claim 5 , further comprising gear ratio adjustment means for changing the gear ratio of the continuously variable transmission, wherein the gear ratio adjustment means has a constant rotational drive source of the feed screw. When rotating at a speed, the speed change in the middle of the drive transmission by the upper link plate, the lower link plate, and the direction changing link mechanism is canceled out so that the moving speed of the massaging operation position of the treatment element becomes constant over time. It is characterized by giving a changing gear ratio.

According to the first aspect of the present invention, the massage operation positions of the left and right treatment elements can be adjusted by moving the left and right treatment elements to the front and rear and the left and right independently. Swinging can be performed. Furthermore, since the left / right movement of the upper link plate with respect to the eccentric shaft is smooth, the left / right treatment elements are smoothly moved to the operation position in the left / right direction.

According to the second aspect of the present invention, since the drive source that applies the hitting operation to the left and right treatment elements can be installed outside the lifting frame that carries the treatment elements, the weight of the lifting frame can be reduced. The therapeutic element can be moved in the vertical direction at high speed and smoothly.

According to the invention of claim 3 , the vertical movement of the nut body that is screwed to the feed screw becomes smooth, and the movement of the operating positions of the left and right treatment elements becomes smooth.

According to the fourth aspect of the present invention, since the operation position of the treatment element can be electrically detected independently from the left and right from the rotation amount of each feed screw, the electrical control of the operation position of the treatment element is independent of the left and right. It can be done easily.

Further, according to the invention of claim 5 , since the rotation speed of each feed screw can be adjusted steplessly, the moving speed of the operating position of the treatment element can be freely and smoothly changed from high speed to low speed or from low speed to high speed. It can be changed, and when the movement of the operating position of the treatment element is used as a massage operation such as acupressure and scissors, a massage operation rich in change can be obtained.

According to the sixth aspect of the present invention, even if a mechanism for changing the driving speed such as a direction changing link mechanism is interposed in the middle of the driving force being transmitted from the rotational drive source to the treatment element, the operation of the treatment element Since the moving speed of the position can be made constant, the moving speed can be freely set.

  Hereinafter, a massage machine according to an embodiment of the present invention will be described with reference to the drawings. In FIG. 14, the whole structure of the massage machine 1 of this embodiment is shown. The massage machine 1 includes a seat surface 2, a backrest portion 3, and armrest portions 4a and 4b on both sides, and is configured in a chair shape on which the user P can sit. The left and right treatment elements and their drive mechanisms are housed in the backrest part 3 as massage machine units, and the left and right treatment elements are operated by operating the operating devices 5a and 5b provided on the left and right armrest parts 4a and 4b. The massage operation position can be changed independently, and the intensity setting of the massage operation can be adjusted independently for each of the left and right treatment elements. The massage machine 1 is provided with a control unit including a microcomputer that takes in electrical data from an encoder or the like to be described later and performs various arithmetic processes, and controls operation signals from the operation devices 5a and 5b. To be input to the department.

  Next, the massage machine unit will be described with reference to FIG. The massage machine unit 6 includes left and right treatment elements 7a and 7b, an elevating frame 8 that carries the treatment elements 7a and 7b and moves up and down (Z-axis direction), its elevating drive mechanism 9, and left and right treatment elements. It comprises a tapping motion drive mechanism 11 that imparts a tapping motion to 7a and 7b, and an operation position moving mechanism 12 that moves the massage operation positions of the treatment elements 7a and 7b independently on the left and right.

  Each will be described in turn below. The left and right treatment elements 7a and 7b have rollers 14 fixed to the upper and lower ends of the arm 13 bent at about 120 degrees, respectively, and the rollers 14 come into contact with the human body. Each treatment element 7a, 7b is attached and fixed at the center of the arm 13 to the lifting frame 8 side, and the attachment structure will be described later.

  The elevating frame 8 is a plate structure that moves up and down (Z axis) while maintaining a fixed posture by a guide mechanism (not shown). The elevating drive mechanism 9 includes a nut body 15 fixed at substantially the center of the plate constituting the elevating frame 8, an elevating feed screw 16 screwed to the nut body 15, and a drive motor 17 connected to the lower end thereof. .

  Next, the tapping motion drive mechanism 11 will be described. The tapping movement drive mechanism 11 is fixed to the lifting frame 8, an eccentric shaft 18 that is rotatably supported by the lifting frame 8 and extends to the left and right (Y axis), upper link plates 19 a and 19 b having one end connected to the eccentric shaft. The drive motor 21, the pulley 22 at the shaft end of the eccentric shaft 18, and the belt 24 that connects the pulley 23 of the drive motor 21 are configured. When the drive motor 21 rotates, the eccentric shaft 18 rotates to swing one end (upper end) of the upper link plates 19a, 19b, and swings to the treatment elements 7a, 7b attached to the other ends of the upper link plates 19a, 19b ( (Vibration) motion is applied, and it is transmitted to the human body as a hitting motion. The other ends of the upper link plates 19a and 19b are also connected to lower link plates 25a and 25b, which will be described later, and the lower ends of the lower link plates 25a and 25b are fixed to swing the upper ends of the upper link plates 19a and 19b. Is transmitted to the treatment elements 7a and 7b mainly as a back-and-forth (X-axis) movement.

  As shown in FIG. 5, the eccentric shaft 18 has one central axis 18 c that penetrates the entire length, and is divided into a right eccentric shaft portion 18 a and a left eccentric shaft portion 18 b with a substantially center as a boundary, and left and right eccentric shaft portions. The eccentric direction is reversed 180 degrees. When the upper link plates 19a and 19b are connected to the left and right eccentric shaft portions 18a and 18b, respectively, and the eccentric shaft 18 rotates around the central axis 18c, the left and right upper link plates 19a and 19b are shifted in phase by 180 degrees. It can be swung by.

  The upper link plates 19a and 19b and the connecting portions 26a and 26b of the eccentric shaft 18 are provided with spherical bearings 27a and 27b slidable in the direction of the eccentric shaft 18, and the connecting portions 26a and 26b themselves. However, the upper link plates 19a and 19b are slidable along the axial length direction (Y-axis) of the eccentric shaft 18, and the upper link plates 19a and 19b deviate from the plane perpendicular to the axial length direction of the eccentric shaft 18 with respect to the eccentric shaft 18. Inclination in the direction is allowed. That is, even if a force in the direction of the arrow α in FIG. 5 (so-called a squeezing force) is applied to the upper link plates 19a and 19b, the upper link plates 19a and 19b are inclined in conformity to the direction in which the force is applied, By applying a twisting force, the connecting portions 26a and 26b between the upper link plates 19a and 19b and the eccentric shaft 18 are fixed, and the connecting portions 26a and 26b slide in the direction of the eccentric shaft 18 (Y-axis) and the upper link. The rotation of the plates 19a and 19b with respect to the eccentric shaft 18 is not hindered. The reason why the connecting portions 26a and 26b of the upper link plates 19a and 19b with respect to the eccentric shaft 18 are slidable along the eccentric shaft 18 will be described later.

  In addition, about the structure which makes the connection parts 26a and 26b with respect to the eccentric shaft 18 of the upper link plates 19a and 19b slidable along the eccentric shaft 18, it is not restricted to what was shown in FIG. You may comprise as shown. In other words, the thrust bearings 28a and 28b are inserted into the left and right eccentric shaft portions 18a and 18b, and the ends of the upper link plates 19a and 19b are connected to the protrusions formed on the thrust bearings 28a and 28b by the pins 29a and 29b. Good. Also in this case, when the force in the direction of arrow β in FIG. 6 is applied to the upper link plates 19a and 19b, the upper link plates 19a and 19b move in parallel in the axial length direction (Y-axis) of the eccentric shaft 18 and twist. And the rotation of the upper link plates 19a, 19b with respect to the eccentric shaft 18 is not hindered. Further, since the spherical bearing is not used, it can be manufactured at a lower cost than the structure shown in FIG.

  Next, returning to FIG. 1, the operating position moving mechanism 12 will be described. The operation position moving mechanism 12 is screwed into the first and second feed screws 31 and 32 and the first and second feed screws 31 and 32 extending along the raising / lowering direction (Z axis) of the lifting frame 8. First and second nut bodies 33, 34, lower link plates 25a, 25b having one ends connected to the first and second nut bodies 33, 34, and first and second feed screws 31, 32 The third and fourth feed screws 35 and 36 extending along the raising / lowering direction (Z-axis) of the lifting frame 8 and the third and fourth feed screws 35 and 36 are respectively screwed into the third and fourth feed screws 35 and 36. And the fourth nut bodies 37, 38, the third and fourth nut bodies 37, 38, and the connecting portions of the lower link plates 25a, 25b with respect to the first and second nut bodies 33, 34. The direction change link mechanisms 41 and 42 are configured. The connecting portions of the lower link plates 25a and 25b with respect to the first and second nut bodies 33 and 34 are configured to be movable to the left and right (Y-axis). The specific structure will be described later. Drive motors 43, 44, 45, and 46 are connected to lower ends of the first to fourth feed screws 31, 32, 35, and 36, respectively.

  The upper ends of the lower link plates 25a and 25b are connected to the lower ends of the upper link plates 19a and 19b 47 and 48, and left and right treatment elements 7a and 7b are attached to the connecting portions, respectively. When driven and the first and second feed screws 31 and 32 are rotated, the first and second nut bodies 33 and 34 move up and down (the first and second nut bodies 33 and 34 and the eccentric shaft). 18), the included angle θ between the upper link plates 19a, 19b and the lower link plates 25a, 25b changes, and the operating positions of the treatment elements 7a, 7b change back and forth (X axis) and up and down (Z To move to the axis). If the first and second feed screws 31 and 32 are independently rotated, the operating positions of the left and right treatment elements 7a and 7b are independently moved back and forth and up and down.

  Similarly, when the drive motors 45 and 46 are driven to rotate the third and fourth feed screws 35 and 36, the third and fourth nut bodies 37 and 38 move up and down (third and fourth). The distance between the nut bodies 37 and 38 of the first and second nut bodies 33 and 34 changes), and the first and second of the lower link plates 25a and 25b are moved by the action of the direction changing link mechanisms 41 and 42. The positions of the connecting portions with respect to the nut bodies 33 and 34 move to the left and right, and the operating positions of the treatment elements 7a and 7b move to the left and right (Y axis). If the third and fourth feed screws 35 and 36 are independently rotated, the operating positions of the left and right treatment elements 7a and 7b are independently moved left and right.

  A structure in which the respective connecting portions of the lower link plates 25a and 25b with respect to the first and second nut bodies 33 and 34 are movable to the left and right (Y axis) will be described with reference to FIG. 3 (FIG. 3). Is another embodiment, but the corresponding connecting portion has the same structure). Only the second nut body 34 will be described, and the description of the first nut body 33 will be omitted. The second nut body 34 has the same structure as the first nut body 33 except that the left and right sides are subject shapes.

  Each of the second nut bodies 34 includes a main body portion 34a and a connecting mechanism portion 34b that is integral with the main body portion 34a and supports the shaft 51 in the left-right direction (Y-axis direction). A bearing body 52 that is movable along the axial length direction is inserted, and the lower end of the lower link plate 25b is connected to the bearing body 52. Therefore, when a leftward force is applied to the bearing body 52, the lower end of the lower link plate 25b moves to the left together with the bearing body 52 (FIG. 3A), and when a rightward force is applied, the bearing body 52 is moved together. The lower end of the lower link plate 25b moves in the right direction (FIG. 3B).

  Next, the structure of the direction change link mechanisms 41 and 42 will be described with reference to FIG. The direction change link mechanisms 41 and 42 include a pin 53 projecting from the third and fourth nut bodies 37 and 38, a pin 54 projecting from the bearing body 52, and a loose mounted between the pins 53 and 54. The lower end of the loose link 55 is rotatably connected to the pin 54. The upper end of the loose link 55 is loosely engaged with the pin 53 via the long hole 55a. Accordingly, when the third and fourth nut bodies 37 and 38 are moved up and down beyond the play length between the long hole 55a and the pin 53, the bearing body 52 is moved left and right. A description will be given with reference to FIG. 3 again. As shown in FIG. 3A, when the nut body rises, the loose link 55 is pulled up and approaches an upright posture, so that the bearing body 52 is horizontally moved in a direction approaching the nut body. On the contrary, as shown in FIG. 3B, when the nut body is lowered, the loose link 55 is pulled down close to the horizontal posture, so that the bearing body 52 is moved horizontally in a direction away from the nut body.

  In addition, about the structure of the direction change link mechanisms 41 and 42, it is not restricted to the above-mentioned thing, A various deformation | transformation is possible. For example, instead of the loose link 55, two link plates connected at one end may be used, or an appropriate spring constant spring may be used.

  Therefore, in the massage machine unit 6 of the present embodiment, when the drive motor 21 is driven, the eccentric shaft 18 rotates, and the left and right treatment elements 7a and 7b swing (vibrate) to perform a hitting operation. When the first and second feed screws 31 and 32 are rotated by 43 and 44, the first and second nut bodies 33 and 34 are moved up and down, respectively, and the upper link plates 19a and 19b and the lower link plates 25a and 25b. The left and right treatment elements 7a and 7b move back and forth (X axis).

  Further, if the third and fourth feed screws 35 and 36 are rotated by the drive motors 45 and 46, the third and fourth nut bodies 37 and 38 are moved up and down, respectively, and the force is changed to the direction changing link mechanism 41, 42, the lower link plates 25a and 25b and the upper link plates 19a and 19b are moved to the left and right (Y axis), and the left and right treatment elements 7a and 7b are moved to the left and right (Y To the axis). In addition, if the feed screw 16 for raising / lowering and the 1st thru | or 4th feed screw 31, 32, 35, 36 are rotated by the same amount at the same speed, the front-back position and the left-right position of the treatment element 7a, 7b will change. The entire lifting frame 8 is lifted and lowered, and the height of the treatment elements 7a and 7b can be changed.

  In the massage machine unit 6, the third and fourth feed screws 35, 36 are provided so that the left and right direction (Y-axis) positions of the treatment elements 7a, 7b can be changed independently for the left and right treatment elements 7a, 7b. The third and fourth nut bodies 37 and 38 are provided. If the left and right treatment elements 7a and 7b are merely operated so as to approach or separate from each other (squeezing operation), In this way, the structure can be simplified.

  With reference to FIG. 2, the massage machine unit which simplified the structure is demonstrated. The same structural parts as those described in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted. In the massage machine unit shown in FIG. 2, instead of the third and fourth feed screws, a common feed screw 56 is provided, and the nut body 57 screwed to the feed screw 56 is connected to the direction change link mechanism. The left and right bearing bodies 52 are connected via 41 and 42.

  In the massage machine unit having this structure, when the drive motor 58 is driven to rotate the feed screw 56 and the nut body 57 is moved up and down, the bearing body 52 (the lower link plates 25a and 25b) is moved by the direction changing link mechanisms 41 and 42. The lower end moves to the left and right (Y axis), and the left and right treatment elements 7a and 7b approach or separate from each other. That is, as shown in FIG. 3A, when the nut body 57 is raised, the left and right bearing bodies 52 approach each other, and the interval between the left and right treatment elements 7a and 7b is reduced, and FIG. As shown in FIG. 4, when the nut body 57 is lowered, the left and right bearing bodies 52 are separated from each other, and the interval between the left and right treatment elements 7a and 7b is increased.

  In the massage machine unit, the drive motor 21 for the eccentric shaft 18 is fixed to the lifting frame 8. However, the rotational drive source for the eccentric shaft 18 is provided outside the lifting frame 8 as follows. Can do. In this case, the lifting frame 8 is reduced in weight, and the moving speed of the treatment elements 7a and 7b can be increased.

  A structure in which the drive motor for the eccentric shaft 18 is provided outside the lifting frame will be described with reference to FIG. The same structural parts as those described in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. In the massage machine unit 6 shown in FIG. 4, a worm shaft 61 is provided along the elevating direction (Z axis) of the elevating frame 8, a worm wheel 62 is provided at the shaft end of the eccentric shaft 18, and the worm shaft 61 and the worm wheel are provided. The eccentric shaft 18 is rotated by rotating the drive motor 63 connected to the worm shaft 61 by engaging with 62.

  Here, the worm shaft 61 and the worm wheel 62 constitute an orthogonal transmission mechanism 64, but the orthogonal transmission mechanism 64 can be variously modified. For example, a bevel gear is provided at the shaft end of the eccentric shaft 18, a spline shaft is provided instead of the worm shaft 61, and a bevel gear unit movable along the spline shaft is provided. The rotation of the spline shaft may be transmitted to the eccentric shaft 18 by engaging the units.

  Further, when the massage machine unit is mounted in the back portion of the chair type massage machine, the pressure applied to the user is applied to the left and right treatment elements 7a and 7b, which are applied to the nut bodies 33 and 34 and the feeds. There is a possibility that the feed screws 31 and 32 are deflected by transmission to the screws 31 and 32 and the nut bodies 33 and 34 cannot be smoothly raised and lowered. However, the feed of the nut bodies 33 and 34 is configured as follows. Smooth vertical movement along the screws 31 and 32 can be ensured.

  The structure will be described with reference to FIG. The same structural parts as those described in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. In the massage machine unit shown in FIG. 7, a straight guide 65 having a trapezoidal cross section extending in parallel with each of the feed screws 31, 32, 56 on the back of the first and second feed screws 31, 32 and the feed screw 56. , 66, 67 are provided, and on the back surfaces of the first and second nut bodies 33, 34 and the nut body 57, receiving recesses 68 are formed which are fitted into the linear guides 65, 66, 67 and are in sliding contact. With this configuration, even if the pressure applied to the user is applied to the nut bodies 33, 34, 57 and the feed screws 31, 32, 56 via the left and right treatment elements 7a, 7b, the feed screw 31, Since 32 and 56 do not bend and maintain linearity, smooth lifting and lowering movement of the nut bodies 33, 34 and 57 is ensured.

  Moreover, each nut body is comprised as follows and the screwing state of a nut body and a feed screw can be stabilized. As shown in FIG. 8 (for the sake of simplicity, typically, only the main body 34a of the nut body 34 is shown), the nut main body for screwing the main body 34a of the nut body 34 into the feed screw 32. 71, an elastic case 72 covering the nut main body 71, and a rigid case 73 covering the outer periphery of the elastic case 72 so that a constant pressure is applied between the feed screw 32 and the nut main body 71. . With this configuration, the backlash between the male screw portion of the feed screw 32 and the female screw portion of the nut body 71 is eliminated, and vibration, backlash, and abnormal noise when the nut body 34 moves up and down by the rotation of the feed screw 32 are eliminated. Is suppressed. The elastic case 72 can be molded from synthetic resin, rubber, or the like.

  Furthermore, the nut main body 71 can be disassembled as follows, and the assemblability can be improved. As shown in FIG. 9, the nut main body 71 is composed of two front and rear split molds 71a and 71b, and at the time of assembly, the feed shaft 32 is sandwiched between the two split molds from the front and rear, and the knock pin 74 is inserted into the hole 75 of the counterpart mold. And is fixed by screws 76. If comprised in this way, the assembly of the whole massage machine unit will become easy. That is, when this structure is not adopted, it is necessary to assemble the other parts after screwing each of the feed screws 31, 32, 56, etc. to the nut body 71, but this structure is adopted. Then, the assembly of the nut body (split mold coupling) to the feed screws 31, 32, 56, etc. can be performed at any stage of the assembly process, and the assemblability is improved.

  Further, in the operation position moving mechanism 12 described above, the movement of the treatment elements 7a, 7b is brought about only by raising and lowering the nut bodies 33, 34, 37, 38, 57 (the operation positions of the treatment elements 7a, 7b are Since it is uniquely determined by the amount of lifting of each nut body), if the amount of lifting of each nut body can be grasped, the operating position of the treatment elements 7a, 7b can be grasped by a predetermined calculation. That is, as a specific configuration, an encoder (not shown) that detects the rotation amount of each feed screw is provided in the drive motor of the feed screws 31, 32, 35, 36, and 56, and the detected rotation amount is obtained from the encoder. The operation position of the treatment elements 7a and 7b can be grasped by outputting to a control unit (not shown) equipped with a microcomputer for controlling the massage machine, and calculating according to a predetermined arithmetic expression in the control unit.

  An outline of the calculation method will be described with reference to FIG. In FIG. 10, it shows about the treatment element 7b of the massage machine unit typically shown in FIG. FIG. 10A is a schematic view of the positional relationship among the nut body 38, the loose link 55, and the treatment element 7b as viewed from the front. The broken line indicates the position before movement, and the solid line indicates the position after movement. FIG. 10B is a schematic view of the positional relationship among the nut bodies 15 (elevating frame 8) and 34, the upper link plate 19b, the lower link plate 25b, and the treatment element 7b as viewed from the side, and the broken line indicates the state before the movement. The position is shown, and the solid line shows the position after movement.

  Now, assuming that speed reducers are interposed between the feed screws 16, 32, 36 and the drive motors 17, 44, 46, the lead of each feed screw is r1, r2, and r3, and the speed reducer When the ratios are m1, m2, and m3, and the rotation speeds of the drive motors are n1, n2, and n3, the movement amounts ΔX, ΔY, and ΔZ of the treatment element 7b are expressed by the following equations.

  Here, Le is the length of the loose link 55, Ls is the offset length with respect to the lower end of the loose link of the treatment element 7b, Lt is the Y-axis coordinate of the nut body 38, Lb is the length of the lower link plate 25b, and Lc is the upper link. The length of the plate 19b, and La is the distance from the connecting portion of the lower link plate 25b and the upper link plate 19b to the treatment element 7b. Z10, z20, and z30 represent the Z-axis coordinates before the nut bodies 38, 15, and 34 are moved, respectively.

  From the following equation, the current position (current coordinate position) of the treatment element 7b can be calculated based on the movement amounts ΔX, ΔY, and ΔZ.

  Further, by inserting a continuously variable transmission between each feed screw and the drive motor, the movement speed of the operating position of the treatment elements 7a, 7b can be freely changed from high speed to low speed, or from low speed to high speed, and It can be changed smoothly, and when the movement of the operating position of the treatment element is used as a massage operation such as acupressure and scissors, a massage operation rich in change can be obtained.

  This will be specifically described with reference to FIGS. The same structural parts as those described in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted. In the massage machine unit 6 shown in FIG. 11, a fixed sheep 81 and a movable sheep 82 are hung on the lower ends of the feed screws 16, 31, 32, 56 and the rotation shafts of the drive motors 17, 43, 44, 58. A continuously variable transmission 85 is provided which includes a passed belt 83 and a spring 84 that biases the movable sheep 82 toward the fixed sheep 81. FIG. 12 representatively shows a continuously variable transmission 85 between the feed shaft 32 and the drive motor 44.

  This configuration has the following advantages. For example, when massaging operations such as massaging and pushing are performed by moving the treatment elements 7a and 7b at a low speed, the rotation of each drive motor is compared if the reduction ratio of the continuously variable transmission 85 is increased. It can be maintained at a high rotational speed and a stable massage operation can be obtained. Further, if the reduction ratio of the continuously variable transmission 85 is decreased, the treatment elements 7a and 7b can be moved at a high speed, which is preferable for a user who prefers a massage by a fast movement of the treatment elements 7a and 7b. . Furthermore, if the speed reduction ratio of the continuously variable transmission 85 is greatly increased or decreased within a relatively short time, the operation of the treatment element becomes rich in change, and a better massage effect can be obtained.

  In addition, by setting the reduction ratio of the continuously variable transmission 85 to a value that changes with time in a specific pattern, speed changing elements such as the direction change link mechanisms 41 and 42 are provided between the feed screw and the treatment element. Even if it intervenes, the moving speed (massage operation speed) of the treatment elements 7a and 7b can be made constant.

  Specifically, the horizontal movement of the treatment element 7b will be described with reference to FIG. FIG. 13A shows the position and moving speed of the treatment element 7b when the nut body 38 is moved up and down at a constant speed to change the left-right direction (Y-axis) position of the treatment element 7b. It is shown in Even if the lifting speed of the nut body 38 is constant, the nut body 38 and the bearing body 52 (the lower end of the lower link plate 25b) are connected by the loose link 55, so the bearing body 52 approaches the nut body 38. In the region (narrow position), the moving speed of the bearing body 52 (the treatment element 7b) becomes high, and in the area where the bearing body 52 is away from the nut body 38 (the wide position), the bearing body 52 (the treatment element 7b) The movement speed is low.

  Therefore, if the reduction ratio of the continuously variable transmission 85 is changed over time in the pattern shown in FIG. 13B, the moving speed of the treatment element 7b can be made constant. That is, in a region where the bearing body 52 (the treatment element 7 b) is close to the nut body 38 (narrow position), the reduction ratio of the continuously variable transmission 85 is increased so that the bearing body 52 (the treatment element 7 b) moves away from the nut body 38. In this area (wide position), the reduction ratio of the continuously variable transmission 85 is decreased.

  The speed reduction ratio pattern of FIG. 13B is stored in the control unit, and when the nut body 38 moves up and down, a speed reduction ratio suitable for the continuously variable speed reducer 85 according to the position of the treatment element 7b is set. If given, the treatment element 7b moves left and right at a constant speed (the left and right treatment elements 7a and 7b move toward or away from each other at a constant speed).

  The above description is about the movement of the treatment elements 7a, 7b in the left-right direction (Y axis), but the same applies to the movement of the treatment elements 7a, 7b in the front-rear direction performed by raising and lowering the nut bodies 33, 34. Thus, the treatment elements 7a and 7b can be moved at a constant speed.

The disassembled perspective view of the massage machine unit which concerns on one Embodiment of this invention. The disassembled perspective view of the massage machine unit which concerns on the other embodiment. It is a perspective view which expands and shows the part of a same direction conversion link mechanism and a nut body, Comprising: (a) shows the state which the right and left treatment element was moved to the center, (b) separated the right and left treatment elements mutually Shows the state. The perspective view which shows the structure where the drive motor of the eccentric shaft was provided out of the raising / lowering frame. The perspective view which expands and shows the connection part of the eccentric shaft and an upper link board. The perspective view which shows the other structural example of the connection part of the eccentric shaft and an upper link board. The disassembled perspective view of the massage machine unit which provided the linear guide in the back surface of the feed screw. The disassembled perspective view which shows the structural example of a nut body. The disassembled perspective view which shows the structural example of a nut main body. (A) is the schematic diagram which looked at the positional relationship of a nut body, a loose link, and a treatment element from the front, (b) is the positional relationship between a nut body, an upper link board, a lower link board, and a treatment element from a side surface. Schematic diagram seen. The disassembled perspective view of the massage machine unit which provided the continuously variable transmission between the feed screw and the drive motor. Sectional drawing of a continuously variable transmission. (A) is a table showing the position and moving speed of the treatment element on the horizontal axis and the vertical axis when changing the left-right direction (Y-axis) position of the treatment element, and (b) is the position and deceleration of the treatment element. A table showing the ratio on the horizontal and vertical axes. The perspective view which shows the whole massage machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Massage machine 6 Massage machine unit 7a, 7b Treatment element 8 Elevating frame 9 Elevating drive mechanism 11 Tapping operation drive mechanism 12 Operation position moving mechanism 16 Elevating feed screw 17 Drive motor (rotation drive source)
18 Eccentric shaft 18c Center axis 19a, 19b Upper link plate 21 Drive motor 25a, 25b Lower link plate 26a, 26b Spherical bearing 31 First feed screw 32 Second feed screw 33 First nut body 34 Second nut body 35 Third feed screw 36 Fourth feed screw 37 Third nut body 38 Fourth nut body 41, 42 Direction change link mechanisms 43, 44, 45, 46 Drive motor (rotation drive source)
47, 48 Connecting portion 53, 54 Pin 55 Loose link 55a Long hole 56 Feed screw 57 Nut body 58 Drive motor (rotation drive source)
61 Worm shaft 62 Worm wheel 64 Orthogonal transmission mechanism 65, 66, 67 Linear guide 68 Receiving recess 85 Continuously variable transmission θ Angle

Claims (6)

In a massage machine that has left and right treatment elements that contact and massage the human body, and the treatment element can perform a massage operation at different height positions with respect to the human body,
A lifting frame that carries the left and right treatment elements and moves up and down;
An eccentric shaft that is rotatably supported by the lifting frame and extends to the left and right;
One end is connected to the eccentric shaft, and an upper link plate provided in a pair on the left and right sides corresponding to the left and right treatment elements,
First and second feed screws extending vertically along the lifting direction of the lifting frame;
First and second nut bodies threadably engaged with the first and second feed screws, respectively;
One end is connected to the nut body, respectively, and a lower link plate provided in a pair of left and right corresponding to the left and right treatment elements,
Each of the first and second nut bodies has a shaft extending in the left-right direction for connecting the lower link plates, and a bearing body movable along the shaft,
Connecting the other ends of the upper link plate and the lower link plate, and attaching the treatment element to the connecting portion,
The upper link plate is swung back and forth by the rotation of the eccentric shaft, and the treatment element performs a hitting operation,
By rotating the first and second feed screws, the first and second nut bodies independently move up and down, and the angle between the upper link plate and the lower link plate is changed, thereby The massage operation position on the human body of the treatment child moves back and forth independently independently,
A connecting portion of the upper link plate with respect to the eccentric shaft is configured to be slidable left and right by a spherical bearing movable along the eccentric shaft ,
Each connecting portion of the lower link plate with respect to the first and second nut bodies is configured to be slidable left and right by being connected to the bearing body , and
Separately from the first and second feed screws, third and fourth feed screws extending up and down along the lifting direction of the lifting frame,
And further comprising third and fourth nut bodies screwed into the third and fourth feed screws, respectively.
Converting said third and fourth nut, the pre-Symbol first and second nut bodies and the bearing bodies each having a vertical movement of the third and fourth nut to the left and right movement of the lower link plate Connected by a direction change link mechanism
Due to the rotation of the third and fourth feed screws, the third and fourth nut bodies independently move up and down, and the first link of the lower link plate connected by the direction changing link mechanism. And each connection part with respect to a 2nd nut body moves right and left, The massage operation position with respect to the human body of the said treatment element moved left and right independently, The massage machine characterized by the above-mentioned. A rotating shaft that engages with the eccentric shaft and extends up and down along the lifting direction of the lifting frame;
An orthogonal transmission mechanism that transmits the rotational force of the rotational shaft as the rotational force of the eccentric shaft between the eccentric shaft and the rotational shaft;
The massage machine according to claim 1, wherein the eccentric shaft is rotated through an orthogonal transmission mechanism by rotation of the rotation shaft, and the treatment element performs a hitting operation. A linear guide extending in parallel with the feed screw is provided on the back surface of the feed screw extending up and down along the lifting direction of the lifting frame,
The massage machine according to claim 1 or 2, wherein the nut body is provided with a receiving recess that is fitted and slidably contacted with the linear guide. Rotation amount detection means for detecting the rotation amount of the feed screw and outputting the detected rotation amount as electrical data to the feed screw,
2. An arithmetic means for calculating a massage operation position of the treatment element with respect to the human body for each of the right and left treatment elements based on rotation amount data of the feed screw from the rotation amount detection means. The massage machine in any one of claim | item 3. A continuously variable transmission is interposed between the feed screw and a rotational drive source of the feed screw so that the speed of changing the massage operation position of the treatment element relative to the human body can be adjusted. Item 5. A massage machine according to item 4. Further comprising gear ratio adjusting means for changing the gear ratio of the continuously variable transmission;
The gear ratio adjusting means cancels the speed change during the drive transmission by the upper link plate, the lower link plate, and the direction changing link mechanism when the rotational drive source of the feed screw rotates at a constant speed, and the treatment 6. The massage machine according to claim 5, wherein a gear ratio that changes with time is provided so that the moving speed of the massage operation position of the child is constant.

Images