JP4857951B2 - Massage machine - Google Patents

Description

  The present invention relates to a massage machine that performs a treatment operation by driving a treatment element.

  In a conventional massage machine that performs a treatment operation by driving a treatment element, for example, as in Patent Document 1, the treatment element 1a is driven in the width direction to massage the treatment person so as to press the treatment person from the left and right. There is. Specifically, this massage machine has a mechanism as shown in FIGS.

  Specifically, the treatment element units 1 each having the treatment element 1a are arranged side by side and arranged movably in the left and right direction, and a long width drive shaft 31 is provided on the left and right, and the outer periphery of the width drive shaft 31 is provided on the left and right Opposite threaded male screws are engraved, and the width feed nuts 33 provided in each treatment element unit 1 are respectively screwed into the respective male screws of the width drive shaft 31, and the width drive shaft 31 is driven by rotation. Each of the treatment element units 1 is made to be able to approach and separate by being driven by each male screw that is screwed so as to be separated.

  Here, the treatment element unit 1 is moved in the left-right direction as shown in FIG. 11, as shown in FIG. 11. 2 is slidably penetrating each other, thereby being guided. Specifically, the shaft rod 3 is constituted by a slide guide shaft 32 and a hitting drive shaft 41, and the bearing portion 2 is constituted by a slide guide shaft bearing portion 34 and a hitting drive shaft bearing portion 46.

  In this way, a plurality of parallel shaft rods 3 are slidably passed through the plurality of bearing portions 2 of the treatment element unit 1 so as to be slidably guided so that the movement of the treatment element unit 1 to the right and left can be accurately performed. On the other hand, when the parallelism of each shaft bar 3 is slightly shifted due to manufacturing errors, the inner peripheral surface of the bearing portion 2 and the shaft bar are moved when the treatment element unit 1 moves. 3 may slid strongly against the outer peripheral surface of the 3 and may cause abnormal noise, vibration, and malfunction.

  More specifically, the width feed nut 33 is housed in a width feed nut housing portion 22 provided in the treatment element unit 1 via a coil spring 21 serving as a cushioning material for safely holding the user with the treatment element 1a. Thus, the coil spring 21 amplifies the noise and vibration generated by the strong sliding between the inner peripheral surface of the bearing portion 2 and the outer peripheral surface of the shaft rod 3. As a result, the stick-slip phenomenon (chatter phenomenon) is clearly caused.

In order to avoid this, high precision is required for the arrangement of the shaft rod 3 in the manufacturing process. However, according to this, the manufacturing cost increases and the assembling performance deteriorates.
JP 2004-16525 A

  The present invention has been made in view of the above-described conventional problems, and eliminates the need to arrange each shaft rod with high precision in order to guide and move the treatment element unit without hindrance, and has good manufacturing cost, It is an object of the present invention to provide a massage machine that can ensure assembly.

In order to solve the above-mentioned problem, a massage machine according to claim 1 of the present invention includes a plurality of long shaft rods 3 arranged side by side so as to be parallel to each other. a plurality of bearing portions 2 provided in massage machine comprising enabling moving the massaging head unit 1 in the lateral direction in a state in which the shaft rod 3 corresponding allowed to penetrate slidably into these bearing portions 2, the bearing portion 2 to absorb the axial tilt error of the shaft rod 3 and further comprising a tilt error absorbing means which allow sliding the shaft rod 3 in the axial direction. According to this, the inclination error absorbing means provided in the bearing portion 2 can absorb the inclination error of the shaft center of the shaft 3 caused by the manufacturing error, and the treatment element unit 1 can be guided and moved without any trouble. In addition, high accuracy is not required for the arrangement of the shaft rods 3 and good manufacturing costs and assemblability can be secured.

The massage machine according to claim 2, sliding in claim 1, provided with a bearing hole portion 4 forming the inner peripheral surface into a spherical shape to the treatment element unit 1, the shaft rod 3 in the axial direction the outer peripheral surface 5a of the shaft supporting member 5 which rotatably supports formed in a spherical shape, the bearing hole 4 and the outer peripheral surface 5a of the shaft supporting member 5 into the inner circumferential surface 4a of the bearing hole 4 and the slidable The tilt error absorbing means is configured by fitting the shaft support member 5 into the interior. According to this, the edge is cut between the inner peripheral surface 4a of the bearing hole 4 formed in a spherical shape and made slidable, and the outer peripheral surface 5a of the shaft support member 5, respectively. No tilt is applied between the bearing hole 4 and the shaft support member 5 when absorbing the tilt error of the axial center No. 3, and tilt error absorbing means having good durability can be obtained.

The massage machine according to claim 3, in claim 1, fitted a cylindrical elastic member 7 along the inner periphery of the bearing hole 6 drilled in the treatment elements unit 1, the elastic member 7 of the axial rod 3 inside the hole 25 by fitting the shaft supporting member 5 slidably supported in the axial direction, characterized in that constitute the tilt error absorbing means. According to this, the inclination error absorbing means can be obtained with a simple configuration and is inexpensive, and when the elastic body 7 is made of rubber or the like, the weight of the treatment element unit 1 can be reduced, and the elasticity can be further increased. Since a desired amount of deformation can be obtained by changing the material and shape of the rubber of the body 7, it is possible to easily obtain an inclination error absorbing means suitable for the degree of arrangement accuracy of the shaft rod 3 during manufacturing.

  The present invention has the advantage that the treatment element unit can be guided and moved without hindrance, and that high precision is not required for the arrangement of the shaft rods, so that favorable manufacturing cost and assemblability can be secured.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  The basic structure of the massage machine of this example follows the mechanism of the conventional massage machine, and only the shaft support structure of each shaft bar 3 and each bearing portion 2 used for the guide of the moving treatment element unit 1 is improved. is doing. Therefore, for the sake of convenience, the basic structure of the massage machine will be described with reference to FIGS.

  FIG. 5 shows a mechanism unit in a massage machine. This mechanism unit is arranged in, for example, the back 90 of the chair 9 shown in FIG. 10 and is self-propelled up and down in the back 90. A vertical drive shaft 51 and a strong and weak drive shaft 61 are installed between the side plates 91 and 91, and a movable unit shown in FIG. 6 is disposed between the side plates 91 and 91.

  As shown in FIG. 7, the vertical drive shaft 51 is rotationally driven by the output of the vertical drive motor 50 fixed to one side plate 91 being transmitted through the gear group in the gear box 52. Pinions 53 and 54 are respectively attached to both ends thereof. The rollers 54 roll together with the rollers 55 shown in FIG. 5 in a rail (not shown) disposed in the backrest 90, and the pinion 53 meshes with a rack (not shown) attached to the rail.

  As shown in FIG. 8, the strength driving shaft 61 is rotationally driven by the output of the strength driving motor 60 fixed to the other side plate 91 being transmitted through the gear group in the gear box 62. The gears 63, 63 for rotating the movable unit are attached to both ends thereof.

  The movable unit has a width drive shaft 31, two slide guide shafts 32, 32, and a striking drive shaft 41 installed between a pair of left and right gear plates 30, 30, and a pair of left and right treatment element units 1, 1 (FIG. 5). And only one treatment element unit 1 is shown in FIG. 6), and both ends of the width drive shaft 31 that can freely rotate about the axis with respect to both gear plates 30, 30 are the above pair. The side plates 91, 91 are supported between the side plates 91, 91, and the teeth 300, 300 on the outer peripheral surface of the gear plates 30, 30 are engaged with the gears 63, 63. One end of the width drive shaft 31 is connected to a pulley 38 to which the output of the width drive motor 35 attached to one side plate 91 is transmitted via a pulley 36 and a belt 37. The drive shaft 31 rotates around the axis by the output of the width driving motor 35.

  A knocking drive motor 40 is mounted on one gear plate 30 of the movable unit. The output of the motor 40 is transmitted to the hitting drive shaft 41 by pulleys 42 and 44 and a belt 43. The hitting drive shaft 41 is formed as a crankshaft having different eccentric directions on the left and right sides, and is slidably fitted to a hitting drive shaft bearing portion 46 provided on the hitting link 45 described later.

  As shown in FIG. 9, the treatment element unit 1 includes an arm base plate 10 as a treatment element support member, a striking plate 11, a treatment element arm 12, a first arm 13, a second arm 14, and two roller-type treatment elements. The arm base plate 10 is slidably fitted to the slide guide shafts 32 and 32, and a width feed nut 33 screwed into a male screw engraved on the outer surface of the width drive shaft 31. The slide guide shaft bearings 34 and 34 are provided to change the axial positions of the width drive shaft 31 and the slide guide shaft 32 by the rotation of the width drive shaft 31, and are formed on the width drive shaft 31. Since the male screw thus formed is formed with a reverse screw on one side, each arm base plate 10, 10 in the pair of left and right treatment element units 1 is rotated by the rotation of the width drive shaft 31. Te, is intended to and away from close to each other. Note that the left and right movements of the treatment element unit 1 are such that the slide guide shafts 32, 32 arranged in parallel with each other and the shaft rods 3 of the hitting drive shaft 41 are provided on the treatment element unit 1 for slide guide shaft bearings. The guides are provided by being slidably fitted to the bearing portions 2 of the portions 34 and 34 and the drive shaft bearing portion 46, and the shaft support between the shaft rod 3 and the bearing portion 2 is provided. The structure is a part according to the present invention and will be described in detail later.

  The knocking plate 11 is pivotally attached to the arm base plate 10, and the treatment arm 12 and the second arm 14 are pivotally attached to the knocking plate 11 by the shaft 100, and the first arm 13 is pivotally attached to the treatment child arm 12 by the shaft 101. Has been. Further, the shaft 102 provided on the hitting plate 11 and the hitting drive shaft 41 which is a crankshaft are connected by a hitting link 45.

  Furthermore, the 1st arm 13 to which the treatment element 1a which is the main treatment element of two treatment elements 1a and 1b was attached to the front-end | tip part, and the 2nd arm to which the treatment element 1b which is an auxiliary treatment element was attached to the front-end | tip part 14 are connected by an interlocking link 15. Further, the arm base plate 10 and the projecting piece 121 projecting from the treatment arm 12 are connected by the swing interlocking links 19 and 18. In addition, the other treatment element unit 1 which makes a pair becomes a symmetrical form of the treatment element unit 1 of illustration.

  The grip driving unit that causes the pair of treatment elements 1a and 1b arranged in the vertical direction to perform a gripping operation is configured by an actuator A1 that performs an expansion and contraction operation by air, and between the pair of receiving plates 27 and 27 and both receiving plates 27 and 27. The actuator A1 including the airbag disposed on the projecting piece has a projecting piece in which one receiving plate 27 projects from the interlocking link 18 and the other receiving plate 27 provided with an airbag cover projects from the tip of the second arm 14. 141 are connected to each other. The linear slide rail 17 connecting the interlocking link 18 and the projecting piece 141 is for preventing the airbag from buckling when the actuator A1 is extended.

  Similarly to the actuator A1, the treatment element unit 1 includes a pair of receiving plates 27, 27 and an air bag disposed between the receiving plates 27, 27, and includes an actuator A2 that performs an expansion / contraction operation by air. . The actuator A2 has one receiving plate 27 fixed on the hitting drive link 45 and the other receiving plate 27 attached to a lever 16 rotatably supported by the shaft 102. Reference numeral 16 includes a roller 160 that contacts the rear edge of the treatment arm 12. Note that reference numeral 95 in FIG. 2 denotes an air drive unit that houses an air pump and an electromagnetic valve for operating the actuators A1 and A2.

  The maximum value of the swingable range of the treatment element arm 12 and the second arm 14 provided with the first arm 13 is determined by a stopper 120 provided on the treatment element arm 12, and A rotation range with respect to the treatment arm 12 is determined by the stopper 140. Further, a torsion coil spring (not shown) is disposed between the second arm 14 and the treatment element arm 12 to urge the treatment elements 1a and 1b in a wider direction.

  The operation of the mechanism unit configured as described above will be described. First, when the vertical drive motor 51 is driven by the vertical drive motor 50, the mechanism unit is self-propelled up and down within the backrest of the chair described above, and the treatment element 1a. , 1b is changed up and down. Further, when the strong and weak driving shaft 61 is driven by the strong and weak driving motor 60, the gear 63 provided in the strong and weak driving shaft 61 rotates the gear plate 30 around the axis of the width driving shaft 31, so that the arm integrally with the gear plate 30 is armed. The base plate 10 is rotated, and for this reason, the amount of protrusion of the treatment element 1a seen from the width drive shaft 31 is small and the amount of protrusion of the treatment element 1a seen from the width drive shaft 31 is large. Status. That is, the strength adjustment can be performed by changing the forward protrusion amount of the treatment element 1a. Further, when the width drive shaft 31 is rotated by the width drive motor 35, the pair of left and right treatment element units 1 and 1 approach and separate in the width direction (left and right direction) as described above, and the left and right treatment elements 1a, 1a, The interval between 1b and 1b is changed.

  This massage machine realizes so-called massage massage by combining the above-described operations by the three motors 50, 60, and 35. Further, when the hitting drive shaft 41, which is a crankshaft, is rotated by the hitting drive motor 40, the hitting link 45 swings the hitting plate 11 in the front-rear direction, and the hitting plate 11 and the treatment arm 12 are connected to the hitting plate 11. The treatment element 1a attached via the arms 13 and 14 performs a hitting operation that moves back and forth finely.

  When the actuator A1 is extended, the second arm 14 of the treatment element unit 1 is pushed and pivoted about the shaft 100, and at the same time, the first arm 13 is moved in the reverse direction about the shaft 101 by the interlocking link 15. For this purpose, the treatment elements 1a and 1b provided on the arms 13 and 14 approach each other and perform a gripping operation. Further, the treatment element arm 12 and the second arm 14 provided with the first arm 13 in the treatment element unit 1 are pivotally attached to the striking plate 11 by the shaft 100 so as to be swingable. In various massage operations including the above, the treatment elements 1a and 1b perform a copying operation so as to come into contact with the back of the human body. For this reason, the treatment elements 1a and 1b surely pinch the human body during the grasping operation. The gripping operation can also be performed in combination with the above-described vertical driving, width driving, and strength driving. That is, it is possible to move the treatment elements 1a and 1b in a state where the shoulders of the human body are pinched upward or to approach the neck side of the human body.

  The actuator A2 biases the treatment arm 12 with a spring. That is, according to the extension state of the actuator A2, the above-described copying operation is a load applied by the spring bias by air pressure. Therefore, when massage treatment is performed by moving the treatment elements 1a and 1b up and down, Massages with different burden ratios of the children 1a and 1b can be obtained according to the air pressure. In addition, even during the above-mentioned gripping operation, when the shoulder of the human body is gripped, this load is applied so that the treatment element 1a that contacts the upper surface of the shoulder does not escape, so a more reliable gripping massage can be performed. Obtainable. When the actuator A2 is extended to the maximum, the above-described copying operation is not performed. However, when a large load is applied, the actuator A2 contracts to ensure safety.

  By the way, in the present invention, the shaft rods 3 (slide guide shafts 32 and 32 and the striking drive shaft 41) and the bearing portions 2 (slide guide shaft bearing portions 34) provided for the guide of the treatment element unit 1 that moves as described above. In particular, the shaft support structure with the knocking drive shaft bearing portion 46) is characterized in that the bearing portion 2 absorbs the shaft center 3 tilt error and makes the shaft rod 3 slidable. An error absorbing means is provided, and it is not necessary to arrange the shaft rods 3 with high precision, and a good manufacturing cost and assemblability are ensured. Examples of embodiments will be described below.

  In the example of FIGS. 1 and 2, the treatment element unit 1 is provided with a bearing hole portion 4 having an inner peripheral surface formed in a spherical shape, and an outer peripheral surface 5 a of a shaft support member 5 that slidably supports the shaft rod 3. It is formed into a spherical shape, the outer peripheral surface 5a of the shaft support member 5 is slidable on the inner peripheral surface 4a of the bearing hole portion 4, and the shaft support member 5 is fitted into the bearing hole portion 4 so that the above inclination is achieved. It is an example which comprised the error absorption means.

  Specifically, as shown in FIG. 1A, a width feed nut case 20 is mounted on the outer side surface of the arm base plate 10 in the left-right direction. As shown in FIG. 1B, the width feed nut case 20 includes a width feed nut storage portion 22 that stores the width feed nut 33 in a non-rotatable state via the coil spring 21 and two slide guide shaft bearings. A portion 34 is formed. In each of the bearing portions 2 of the hitting drive shaft bearing portion 46 of the hitting link 45 and the slide guide shaft bearing portion 34 described above, bearing holes drilled in the hitting link 45 and the width feed nut case 20 respectively. 6, and spherical bearing members 8 are disposed in the bearing holes 6, respectively.

  As shown in FIG. 1C, the spherical bearing member 8 includes a shaft support member 5 that supports the slide guide shafts 32 and 32 and the shaft rod 3 of the hitting drive shaft 41 through the shaft support member 5 and the shaft support member 5 therein. The outer member 80 is housed and has an automatic alignment function as will be described later. The shaft support member 5 is a substantially spherical member, that is, the outer peripheral surface 5a is formed into a convex spherical surface, and a through hole 23 is formed inside the shaft rod 3 so as to be slidable in the axial direction. ing. The outer member 80 is a cylindrical member having a housing hole 24 for housing the shaft support member 5 therein, and an inner peripheral surface 24 a of the housing hole 24 is formed into a concave spherical surface. In the state in which the shaft support member 5 is stored, the inner peripheral surface 24 a of the storage hole 24 formed in a spherical shape and the outer peripheral surface 5 a of the shaft support member 5 are slidable to support the shaft inside the storage hole 24. The member 5 is tiltable in any direction (ie, 360 °) in the vertical and horizontal directions. In order to dispose the spherical bearing member 8 in the bearing hole 6, the outer member 80 is fitted into the bearing hole 6. At this time, the inner peripheral surface 24 a of the storage hole 24 of the outer member 80 is formed inside the bearing hole 6. The inner peripheral surface 4a of the bearing hole portion 4 functions as a shaft hole of the so-called bearing portion 2 and does not incline with respect to the width feed nut case 20 and the tapping link as in the peripheral surface 6a. Is configured.

  In this inclination error absorbing means, even when the axis of each shaft rod 3 that should be in a parallel state is slightly inclined due to a manufacturing error or the like, it is applied to each spherical surface as shown in FIG. By sliding the inner peripheral surface 4a of the bearing hole 4 and the outer peripheral surface 5a of the shaft support member 5, the tilt error of the shaft center of the shaft rod 3 can be absorbed, and the treatment element unit 1 can be guided without hindrance. Can be moved. Therefore, higher accuracy is not required for the arrangement of the shaft rods 3 than in the prior art, and favorable manufacturing costs and assemblability can be secured. More specifically, the edge is cut between the inner peripheral surface 4a of the bearing hole 4 and the outer peripheral surface 5a of the shaft support member 5, and the bearing is used when absorbing the tilt error of the shaft center of the shaft rod 3. No stress is applied between the hole 4 and the shaft support member 5, and good durability is also provided.

  Although not shown, the inner peripheral surface 6a of the bearing hole 6 formed in the tapping link or the width feed nut case 20 is formed in a spherical shape to constitute the inner peripheral surface 4a of the bearing hole portion 4, and this bearing hole It is also preferable that the shaft support member 5 having the outer peripheral surface 5a having a spherical shape is fitted to 6 in a tiltable manner.

  3 and 4, the cylindrical elastic body 7 is fitted along the inner peripheral portion of the bearing hole 6 drilled in the treatment element unit 1, and the shaft rod is inserted into the internal hole 25 of the elastic body 7. This is an example in which the tilt error absorbing means is configured by fitting a shaft support member 5 that slidably supports 3. Specifically, the shaft support member 5 is a cylindrical member having a through hole 23 in which the shaft rod 3 is slidably fitted in the axial direction thereof, and is an internal hole of the elastic body 7 made of rubber or the like. The outer periphery is inserted and bonded to 25. When the shaft center of each shaft rod 3 that should be in a parallel state is in a slightly tilted state due to a manufacturing error or the like, the tilt error absorbing means is arranged so that the shaft rod 3 is inserted into the bearing hole 6 as shown in FIG. The elastic body 7 is elastically deformed in accordance with the misalignment, so that an inclination error of the shaft center of the shaft rod 3 can be absorbed, and the treatment element unit 1 can be moved without hindrance. Therefore, it is not necessary to provide a high accuracy for the arrangement of the shaft rods 3 as compared with the prior art, and a good manufacturing cost and assemblability can be secured. In addition, the inclination error absorbing means of this example has an advantage that a desired amount of deformation can be obtained by changing the material and shape of the rubber constituting the elastic body 7, and is also less expensive than the previous example. Is possible, and the treatment element unit 1 can be reduced in weight.

  In the above-described embodiment, the width feed nut 33 that is screwed into the width drive shaft 31 that is rotationally driven is arranged in the axial direction (left and right direction) of the width drive shaft 31 in the box-shaped width feed nut storage portion 22 as in the conventional case. The coil spring 21 which expands and contracts is interposed, and the coil spring 21 is made to function as a cushioning material when the treatment element 1a clamps the user from the left and right to ensure the safety of the massage machine. According to this coil spring 21, as described in the section of the prior art, the stick-slip phenomenon (chatter) is generated by amplifying abnormal noise and vibration generated by the strong sliding between the inner peripheral surface of the bearing portion 2 and the outer peripheral surface of the shaft rod 3. In the present invention, since the tilt error absorbing means enables smooth sliding of the shaft rod 3 to the bearing portion 2 as described above, the inner circumference of the bearing portion 2 can be reduced. Since the surface and the outer peripheral surface of the shaft rod 3 do not slide strongly, the noise and vibration that cause the stick-slip phenomenon do not occur, and the occurrence of the stick-slip phenomenon can be effectively avoided. .

It is a massage machine of the example of an embodiment of the invention, (a) is an exploded perspective view of a treatment element unit, (b) is a sectional side view of a width feed nut case, (c) is a spherical bearing member FIG. It is explanatory drawing explaining operation | movement of the inclination error absorption means same as the above, (a) is a sectional side view of the state which supported the shaft rod of the parallel state by the bearing part, (b) was inclined in the shaft center. It is a sectional side view of the state which supported the shaft rod of the state in the bearing part. It is a disassembled perspective view of the treatment element unit of the massage machine of the other examples of embodiment of this invention. It is explanatory drawing explaining operation | movement of the inclination error absorption means same as the above, (a) is a sectional side view of the state which supported the shaft rod of the parallel state by the bearing part, (b) was inclined in the shaft center. It is a sectional side view of the state which supported the shaft rod of the state in the bearing part. It is a perspective view of the whole mechanism unit of the conventional massage machine. It is a perspective view of a movable unit same as the above. It is a perspective view of the up-and-down drive part same as the above. It is a perspective view of the same strength driving part. It is a disassembled perspective view of a treatment element unit same as the above. It is a perspective view of the chair which incorporated the mechanism unit same as the above in the backrest. It is a sectional side view of the principal part of a treatment element unit same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Treatment element 1a Treatment element 2 Bearing part 3 Shaft rod 4 Bearing hole part 4a Inner peripheral surface 5 Shaft support member 5a Outer peripheral surface 6 Bearing hole 7 Elastic body 8 Spherical bearing member 80 Outer member 24 Storage hole 24a Inner peripheral surface 25 Inside Hole

Claims (3)

Juxtaposed so as to respectively pintle long plurality of right and left parallel, a plurality of bearing portions treatment element unit equipped with a massaging head, slidably penetrating to the shaft rod corresponding to these bearing portions in massage machine comprising enabling moving the massaging head unit in the lateral direction while absorbs axis tilt error of the axial rod into the bearing portion to slidably the shaft rod in its axial direction A massage machine comprising tilt error absorbing means. Provided with a bearing hole portion of the inner peripheral surface formed in a spherical shape to said massaging head unit, the outer peripheral surface of the shaft support member for supporting slidably the shaft rod in the axial direction is formed in a spherical shape, the bearing the inner peripheral surface of the hole in the slidable outer peripheral surface of the shaft support member by fitting the shaft supporting member inside said bearing hole portions, and characterized by being configured the tilt error absorbing means The massage machine according to claim 1. The shaft fitted a cylindrical elastic body along the inner periphery of the bearing hole drilled in the treatment applicators unit, for supporting the shaft rod inside hole of the elastic member slidably in the axial direction The massage machine according to claim 1, wherein the tilt error absorbing means is configured by fitting a support member.

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