JP2007029558A - Massage machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a massage machine by which a high-level massage feeling can be obtained. <P>SOLUTION: This massage machine comprises: a drive shaft 20 driven in the state of being rotatable forward and backward; a pair of inclined shafts 22 provided with shafts inclined with respect to the drive shaft 20 and mounted on the drive shaft; treatment element units 5 where a plurality of treatment elements 50 are arranged with vertical intervals and one end each of which is connected to the outer peripheral surface of each of the inclined shaft 22 in a freely rotatable state; and a switch means for switching a shaft rotary position with respect to the drive shaft of one of the pair of inclined shafts 21. The treatment element units 5 are provided with: a support arm 52 where the plurality of treatment elements 50 are arranged; and a rocking arm 51 whose one end is connected to the outer peripheral surface of each of the inclined shaft 22 in the freely rotatable state. A supporting arm is connected to the other end side of the rocking arm. By the presence of the rocking arms, increase of a distance from the drive shaft to the treatment elements can be attained and the upper and lower treatment elements can move nearly in the same direction, so that the high-level massage feeling can be obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a massage machine capable of giving a massage to a treatment element, and more particularly to a massage machine which obtains a massage by swinging a treatment element left and right using a rotationally driven tilt shaft. is there.

  There is a massage machine that can obtain massage by swinging the treatment element to the left and right using a rotationally driven tilt axis, but with a pair of left and right tilt axes whose tilt directions are reversed, The pair of left and right treatment elements move in the same direction by allowing the treatment elements not only to move toward and away from each other but also to switch the inclination directions of the two inclined axes to the same direction. Japanese Patent Application Laid-Open No. H10-228707 discloses a movement that can be obtained.

In this case, in addition to the fir massage, it is also possible to obtain a swing massage that shakes the human body to the left and right. As shown in FIGS. 6 and 7 of Patent Document 1, the upper and lower treatment elements always move in the opposite direction. For this reason, for those who receive massage, the movement of the treatment element is felt small, and there is not much massage feeling.
JP 2003-38591 A

  This invention is invented in view of said conventional problem, Comprising: It aims at providing the massage machine which can obtain a higher massage feeling.

  In order to solve the above problems, a massage machine according to the present invention includes a drive shaft that is driven to rotate forward and backward, a pair of inclined shafts that are mounted on the drive shaft and have a shaft that is inclined with respect to the drive shaft, A treatment element unit in which a plurality of treatment elements are arranged at intervals in the vertical direction and one end of the treatment element unit is freely connected to the outer peripheral surface of each inclination axis, and one of the inclination axes of the pair of inclination axes. In the apparatus provided with switching means for switching the position around the axis with respect to the drive shaft, the treatment element unit has a support arm on which a plurality of treatment elements are arranged at intervals in the vertical direction, and one end of the treatment element unit swings on the outer peripheral surface of the inclined shaft. The swing arm is connected freely, and the support arm is connected to the other end of the swing arm. Because of the presence of the swing arm, the distance from the drive shaft to the treatment element can be increased, and the upper and lower treatment elements can be moved in almost the same direction, thereby obtaining a high massage feeling. be able to.

  At this time, if the swing arm of each treatment element unit is arranged on the eccentric shaft portion eccentric in the same direction on the drive shaft, the movement by the eccentric component can be added to the treatment element, and at the same time the switching means Even at the time of switching, the position change due to the eccentric component can be given to the treatment elements of the left and right treatment element units in the same direction.

  It is preferable that the support arm is connected to the swing arm so as to be rotatable up and down and is urged by a spring in one direction. It is possible to reliably obtain a state where the upper and lower treatment elements are in contact with the human body.

  The switching means makes the tilt shaft freely rotatable within about 180 ° with respect to the drive shaft, and switches the position of the tilt shaft relative to the drive shaft by switching the rotation direction of the drive shaft. If the tilted shaft made free is preloaded in the thrust direction by an elastic body, it is possible to reliably prevent the tilted shaft from rotating in advance even though it is within 180 ° of the drive shaft during switching. it can.

  In the present invention, since the swinging arm is interposed between the support arm in which a plurality of treatment elements are arranged at intervals in the vertical direction and the inclined shaft, the distance from the drive shaft to the treatment element is increased. In addition, the upper and lower treatment elements can move in the same direction, especially when the left and right treatment element units move in the same direction, all the treatment elements move in the same direction. By doing so, the human body can obtain a massage machine that is greatly shaken from side to side, and for this reason, a high massage feeling can be obtained.

  Hereinafter, the present invention will be described based on an embodiment shown in the accompanying drawings. The illustrated massage mechanism is arranged so as to be capable of self-propelling vertically in a chair back, and vertical frames 11 and 11 positioned on the left and right, A frame drive motor unit 2 (see FIG. 2) and a frame 1 constituted by a guide shaft 13 connecting the upper ends of the vertical frames 11 and 11 and a pair of mounting plates 14 and 14 arranged in the middle of the left and right. The upper and lower drive motor unit 3, the hitting drive motor unit 4, and a pair of left and right treatment element blocks 5, 5 are mounted. In the figure, reference numerals 71, 73, and 75 denote slit plates for detecting the operating position, and reference numerals 72, 74, and 76 denote photosensors for detecting the operating position.

  The traveling shaft 30 installed between the lower ends of the vertical frames 11 and 11 has pinions 31 fixed to both ends thereof, and guide rollers 32 and 33 are rotatably mounted thereon. Guide rollers 32 are provided at both ends. These guide rollers 32 roll in guide rails arranged on the left and right sides of the backrest, and the pinion 31 meshes with a rack attached to the guide rails. For this reason, when the vertical drive motor unit 3 rotationally drives the travel shaft 30 provided with the pinion 31, the massage mechanism 1 self-travels up and down in the backrest along the guide rail.

  The rotation of the kneading drive motor unit 2 is transmitted to the drive shaft 20 disposed below the mounting plates 14 and 14. As shown in FIG. 7, the drive shaft 20 is provided with eccentric shaft portions 21 and 21 at both ends thereof, and inclined shafts 22 and 22 are arranged on the outer periphery of each eccentric shaft portion 21. One inclined shaft 22 is attached so as to rotate integrally with the drive shaft 20 by a through pin 23 that penetrates the eccentric shaft portion 21, but the other inclined shaft 22 is a stopper pin fixed to the eccentric shaft portion 21. Rotates together with the drive shaft 20 by engagement with 24. However, since the engaging portion of the inclined shaft 22 with the stopper pin 24 has a notch extending over almost a half circumference, when the drive shaft 20 reverses its rotational direction, it rotates freely with respect to the drive shaft 20 by approximately 180 °. It will be.

  And the treatment element blocks 5 and 5 shown in FIG. 6 are connected with the two inclination shafts 22 and 22 which have the axis | shaft inclined with respect to the drive shaft 20, respectively. The treatment element block 5 includes a swing arm 51 whose one end is rotatably connected to the outer periphery of the inclined shaft 22 via a bearing 54, and a support arm whose central portion is pivotally supported on the other end of the swing arm 51. 52 and roller-shaped treatment elements 50 and 50 that are pivotally supported at both ends of the support arm 52 having a square shape on the side surface. The support arm 52 has an upper treatment element 50 on the front side of the backrest. In a state of being urged by a spring in a protruding direction, the swing arm 51 is attached to a swing arm 51 so as to be rotatable up and down.

  A hitting drive shaft 40 driven by the hitting drive motor unit 4 via the belt 43 is installed on the upper part of the mounting plates 14 and 14. The hitting drive shaft 40 is formed as a crankshaft having eccentric shaft portions at both ends, and a connecting rod 45 is provided between each eccentric shaft portion and the swing arm 51 of each of the treatment element blocks 5. It is connected. The connecting rod 45 and the swing arm 51 are connected by a joint 46 that can freely move in three dimensions, and the rotation of the drive shaft 40 about the axis between the connection rod 45 and the drive shaft 40 is performed. The connecting rod 45 is connected so that it can freely swing in the axial direction of the drive shaft 40.

  Then, as described above, the massage mechanism 1 is self-propelled up and down in the backrest by driving the vertical drive motor unit 3 and changes the position of the treatment element 50 up and down. At this time, since the support arm 52 including the upper and lower two treatment elements 50 and 50 is connected to the swing arm 51 so as to be pivotable up and down and is spring-biased, the two upper and lower treatment elements 50 are provided. , 50 can always be in contact with the back of the human body held by the backrest.

  Further, when the kneading drive motor unit 2 is rotated in one direction, as shown in FIG. 7, the inclined shafts 22 and 22 respectively disposed on the eccentric shaft portions 21 and 21 at both ends of the drive shaft 20 are inclined with respect to the axis. Since the oscillating arms 51 are attached to the outer circumferences of the inclined shafts 22 and 22 and the movement of the oscillating arms 51 is restricted by the connecting rods 45 and 45, the left and right treatment elements As shown in FIG. 8, the units 5 and 5 cause the upper and lower treatment elements 50 and 50 to move toward and away from each other. At this time, the eccentric shaft portion to which the inclined shaft 22 is attached. Because of the 21 eccentric components, the treatment element 50 moves back and forth as shown in FIG. Accordingly, when a person is leaning on the back of the chair, these treatment elements 50 and 50 perform a massage on the back of the human body.

  When the rotation direction of the kneading drive motor unit 2 is reversed, at the initial stage of rotation, the other inclined shaft 22 rotates integrally with the drive shaft 20 in relation to the stopper pin 24 as described above. As shown in FIG. 9 by changing the phase by 180 ° with respect to the shaft 22, the inclinations of the two inclined shafts 22 and 22 are in the same direction. For this reason, the left and right treatment element units 5 and 5 are shown in FIG. As shown, the treatment elements 50 and 50 are moved in the same direction. When such a movement is performed by the therapeutic element 50, the back surface of the person held by the back of the chair can obtain a massage feeling that is alternately swung left and right.

  Here, in this massage mechanism, the support arm 52 is not directly connected to the inclined shaft 22 for swinging the support arm 52 provided with the treatment elements 50, 50 left and right but via the swing arm 51. Therefore, both when the movement shown in FIG. 8 is performed and when the movement shown in FIG. 10 is performed, the two upper and lower treatment elements 50 and 50 included in the support arm 52 are slightly out of phase in the lateral movement. Nevertheless, it moves in the same direction.

  In particular, when the left and right treatment element units 5 and 5 are tilted in the same direction, the four treatment elements 50 move in substantially the same direction when switched to the state shown in FIGS. The human body in which the child 50 is in contact with the back surface is greatly shaken from side to side, and therefore a high massage feeling can be obtained.

  Further, when the inclined shaft 22 has an eccentric component for causing the treatment element 50 to move back and forth, as shown in FIG. 14, when the inclination direction is reversed between the left and right treatment element units 5 and 5, and Since the distances LA and LB from the drive shaft 20 to the treatment element 50 differ depending on the same direction, the contact pressure on the human body in the state shown in FIG. Differently, an appropriate massage cannot be performed, but here, since the eccentric shaft portion 21 of the drive shaft 20 has an eccentric component, both in the state shown in FIG. 7 and in the state shown in FIG. The distance from the drive shaft 20 to the treatment element 50 in the left and right treatment element units 5 and 5 does not change, and therefore, appropriate massage can always be performed on the human body.

  Further, when the hitting drive shaft 40 is rotated by the hitting drive motor unit 4, the connecting rod 45 swings the swing arm 51 up and down, so that the treatment element 50 performs a continuous vertical movement, Give the human body a tapping massage.

  By the way, when switching between the kneading massage shown in FIG. 8 and the left and right swing massage shown in FIG. 10 is performed by changing the rotation direction of the drive shaft 2, only a half circumference with respect to the drive shaft 20 in relation to the stopper pin 24. As shown in FIG. 12, it is preferable to pre-load the thrust shaft 22 with an elastic body 26 made of a disc spring in the thrust direction. In the figure, 25 is an inclined plate, 28 is a bush, and 29 is a fixing nut.

  Since the above preload causes loose braking on the rotation of the tilt shaft 22 with respect to the drive shaft 2, a situation in which the rotation of the tilt shaft 22 precedes the drive shaft 20 (stopper pin 24) does not occur. The treatment element units 5 and 5 can always be kept in a synchronized state.

  With respect to switching the rotational position of the tilt shaft 22 with respect to the drive shaft 20 by 180 °, the connection of the tilt shaft 22 is disconnected by the 180 ° rotation of the drive shaft 20 when the rotation direction of the drive shaft 20 is switched as shown in FIG. You may carry out using the electromagnetic clutch 27. FIG.

It is a perspective view of the massage mechanism in an example of an embodiment of the invention. It is a top view same as the above. It is a front view same as the above. It is a side view same as the above. It is a rear view same as the above. It is a perspective view of a treatment element unit same as the above and a connecting rod. FIG. 2 shows a drive shaft and an inclination axis as above, wherein (a) is a left side view, (b) is a front view, and (c) is a right side view. It is operation | movement explanatory drawing same as the above. The other states of the drive shaft and the tilt shaft are shown, wherein (a) is a left side view, (b) is a front view, and (c) is a right side view. It is operation | movement explanatory drawing same as the above. It is explanatory drawing which shows the motion by an eccentric component. It is a fragmentary sectional view of other examples. It is a front view of another example. (a) (b) is explanatory drawing which shows the problem of a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Comb drive motor unit 3 Vertical drive motor unit 4 Stroke drive motor unit 5 Treatment element unit 20 Drive shaft 21 Eccentric shaft part 22 Inclination axis 50 Treatment element 51 Swing arm 52 Support arm

Claims (4)

  A drive shaft that is driven to rotate forward and backward, a pair of tilt shafts that are mounted on the drive shaft with shafts that are inclined with respect to the drive shaft, and a plurality of treatment elements are arranged at intervals in the vertical direction. And a treatment element unit, one end of which is freely connected to the outer peripheral surface of each inclined shaft, and a massager comprising a switching means for switching the position of one of the inclined shafts relative to the drive shaft of the inclined shaft. In the machine, the treatment element unit includes a support arm in which a plurality of treatment elements are arranged at intervals in the vertical direction, and a swing arm whose one end is freely connected to the outer peripheral surface of the inclined shaft, A massage machine, wherein a support arm is connected to the other end of the swing arm.   2. The massage machine according to claim 1, wherein the swing arm of each treatment element unit is arranged on an eccentric shaft portion eccentric in the same direction on the drive shaft.   3. The massage machine according to claim 1, wherein the support arm is connected to the swing arm so as to be pivotable up and down and is spring-biased in one direction.   The switching means makes the tilt shaft freely rotatable within about 180 ° with respect to the drive shaft, and switches the position of the tilt shaft around the drive shaft by switching the rotation direction of the drive shaft. The massage machine according to any one of claims 1 to 3, wherein a preload is applied to the inclined axis by an elastic body in a thrust direction.

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