JPH0759825A - Massage machine - Google Patents

Abstract

PURPOSE:To not apply an excessive load to a user by constituting the massage machine so that a control operation by a control mechanism can be operated only to therapeutic pieces being in the course of massage operation. CONSTITUTION:When a rotary shaft 12 is rotated around an auxiliary shaft 13 through a gas spring 16 and a rotary plate 15 by rotating a feed screw 25 by a motor, an arm 4 and an outer ring 3 rotate around an inner ring 2, the protruding amount of therapeutic pieces 5 is varied and a strong massage and a weak massage can be executed selectively. The strong/weak control by rotating the feed screw 25, and the interval control of the therapeutic pieces 5 by rotating a screw shaft 14 cannot both be operated as a single operation, and one of a main shaft 1 or the rotary shaft 12 always rotates together therewith. This control is executed by controlling an electromagnetic clutch. At the time of executing the strong/weak control and the interval control, since a rubbing massage or a tapping massage is always executed, it does not occur that the therapeutic pieces are strengthened to a dangerous state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a massaging machine for massaging a human body by a pair of left and right treatment elements.

[0002]

2. Description of the Related Art In such a massager, a massager in which the interval between both treatment elements is variable and a massager in which the intensity of massage operation can be adjusted are provided.

[0003]

However, in the conventional massage machine, the interval adjustment and the strength adjustment can be performed only when the massager is not performing the massage operation. Depending on the state of the treatment element, the user may have an excessive load when the treatment element starts the next massage operation.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a massage machine which does not apply an excessive load to a user.

[0005]

SUMMARY OF THE INVENTION The present invention, however, comprises a pair of left and right massaging elements that perform a massaging operation, a mechanism for adjusting the distance between the massaging elements, and a mechanism for adjusting the strength of the massaging operation by both massaging elements. The massage machine is characterized in that the adjusting operation by these adjusting mechanisms can be performed only for the massaging elements during the massage operation.

[0006]

According to the present invention, in order to adjust the strength and the interval by moving the massager during the massaging operation, there is a case where the strength is too strong or the interval is too narrow. There is no such thing.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. This massage machine is incorporated into a backrest of a chair or a bed. In the illustrated embodiment, as shown in FIG. It shows what is built in the backrest that is supposed to be reclining. This chair is provided with a seat portion 82 and an armrest 83 on a lower frame 81 framed by a pipe, and a lower portion of a frame 85 of a backrest 84 is pivotally attached to the lower frame 81, and a gas spring is provided between a lower end of the frame 85 and the lower frame 81. 86 is attached, and the backrest 84 can be reclined by the expansion and contraction of the gas spring 86 by the operation of the lever 87 provided on the side of the armrest 83. A pair of rails 90, 90 facing each other are fixed. A headrest 88 is provided at the upper end of the backrest 84, and support bands 89 are provided in the up-down direction on both sides of the back surface of the cover sheet that is provided on the front surface of the backrest 84 up to the headrest 88.
The racks 9 are provided at the opening edges of the pair of rails 90, 90, respectively.
1, 91 are fixed to each other along the longitudinal direction, and rollers 18 rolling between the rails 90, 90 inside the rail 90.
And a massage machine that includes a pinion 17 that meshes with the rack 91.

As shown in FIG. 1, the massage machine has a motor block 20 at one end and a speed reducer block 19 at the other end.
From both of these blocks 20,19,
8 and a pinion 17 which is driven to rotate, a main shaft 1, a screw shaft 14, and an auxiliary shaft 13 are installed between the blocks 20 and 19. And both blocks 20, 19
The auxiliary shaft 13 whose both ends are supported by the pair of rotary plates 1 which are rotatable with respect to the auxiliary shaft 13.
The main shaft 1, the screw shaft 14 and the auxiliary shaft 1
A rotary shaft 12 parallel to the shaft 3 is attached so that the rotary shaft 12 is rotatable around the auxiliary shaft 13. The rotary shaft 12, both ends of which are supported by the pair of rotary plates 15, 15, is rotatable with respect to the rotary plate 15. The rotary shaft 12 is formed by connecting a pair of crankshafts 12a and 12b whose eccentric directions are opposite to each other in the axial direction, and non-eccentric portions at both ends are supported by the rotary plate 15.

The motor housed in the motor block 20 drives the main shaft 1, the screw shaft 14, the rotary shaft 12, and the pinion 17 to rotate, and also the rotary shaft 1 around the auxiliary shaft 13.
2 is rotationally driven. That is, the motor block 20
2 attached to the output shaft of the motor protruding downward
8, the driven shaft 3 disposed on the outer surface of the speed reducer block 19
1 is connected via a belt 29 and a pulley 30, and the driven shaft 31 and the speed reducing mechanism portion in the speed reducer block 19 are connected by a clutch 33, pulleys 34, 36 and a belt 35. There is. The speed reduction mechanism unit (not shown) in the speed reducer block 19 includes a speed reduction unit and a plurality of clutch units. When the clutch 33 is connected, the main shaft 1, the screw shaft 14, or the pinion 17 is connected. The motor output is selectively transmitted to. A worm wheel 41 mounted on the auxiliary shaft 13 is connected to the driven shaft 31 via a clutch 32, a pulley 37, a belt 38, a pulley 39, and a worm 40.
And a pulley 42 integral with the pulley 4 fixed to the rotary shaft 12.
3 and a belt 44. When the clutch 32 is connected, the motor output is output from the rotary shaft 12 by the above-mentioned members.
Is transmitted to the rotary shaft 12, and the rotary shaft 12 rotates about the shaft.

Further, a feed screw 25 connected to the motor via pulleys 21 and 23, a belt 22 and a clutch 24 is arranged on the outer surface of the motor block 20, and the feed screw 25 is screwed into the feed screw 25. The nut 26 and one of the pair of rotary plates 15 and 15 are connected by an elastically expandable gas spring 16. When the feed screw 25 rotates at the motor output, the feed nut 26 that moves in the axial direction of the feed screw 25 moves the rotary plate 15 via the gas spring 16, and as a result, is supported by the rotary plate 15. The rotating shaft 12 is rotating about the auxiliary shaft 13.

A pair of inner rings 2 and 2 are attached to the main shaft 1 at a distance. Both inner rings 2 and 2 are eccentric to the main shaft 1 in the same direction by the same amount and are inclined in opposite directions, and rotate together with the main shaft 1 by engagement with the protrusions 11 formed on the main shaft 1. So as to be slidable in the axial direction of the main shaft 1, and outer rings 3 and 3 are mounted on the outer peripheral surface so as to freely rotate. One end of each connecting arm 6, 6 is rotatably connected to the outer peripheral surface of the non-eccentric portion of each inner ring 2, 2. This connecting arm 6, which is adapted to slide in the axial direction of the main shaft 1 together with the inner ring 2, is screwed with the screw shaft 14, and the screw shaft 14 has opposite screw directions. The pair of connecting arms 6 and 6 which are respectively screwed to the portions are provided with a pair of inner rings 2 and 6 as the screw shaft 14 rotates.
Move two closer together or further away from each other.

Arms 4 and 4 are provided on the outer rings 3 and 3, respectively.
The middle part of each arm 4 is fixed, and a roller-shaped massaging element 5 which is freely rotatable with respect to the arm 4 is attached to the bent portion at the tip of each arm 4, and the other end of each arm 4 is attached. Are connected to the rotary shaft 12 via connecting links 8. In both of the connecting links 8 and 8, the connecting portion with the rotating shaft 12 encloses the sphere 80 so that it can be freely rotated three-dimensionally, and the connecting portion with the arm 4 is also a ball joint 70. The connecting link 8 is formed so as to be freely rotatable three-dimensionally. One end of one connecting link 8 is connected to a sphere 80 provided on the crankshaft 12a, which is an eccentric part of the rotating shaft 12, and the other is connected. The link 8 is also engaged with a sphere 80 provided on the crankshaft 12b, which is an eccentric portion of the rotary shaft 12. Further, the non-eccentric portion at the center of the rotating shaft 12 and the auxiliary shaft 13 are connected to each other by a connecting plate 9 which is freely rotatable.

Next, the operation will be described. When the main shaft 1 is rotated by the motor, the inner ring 2 that rotates together with the main shaft 1 is eccentric and inclined with respect to the main shaft 1. Therefore, the outer ring 3 that is mounted on the inner ring 2 so as to freely rotate.
The treatment element 5 attached to the arm 4 via the arm 4 has a movement limited to the movement of the arm 4 by the connecting link 8, and thus a movement that draws a three-dimensional trajectory along with the rotation of the spindle 1. That is, the movement is performed to change the position in the vertical direction, the axial direction of the spindle 1, and the protruding direction from the spindle 1.
The pair of treatment elements 5, 5 that perform such movement symmetrically,
Give a so-called "birth massage" massage to the back of the user. The connecting link 8 connected to the arm 4 via the ball joint 70 is swung up and down and left and right as the inner ring 2 rotates, but the connecting link 8 and the rotary shaft 12 form a ball joint. The treatment element 5 is smoothly operated because it is connected via the spherical body 80.

By rotating the feed screw 25 by a motor, the gas spring 16 and the rotary plate 15 are used to
When the rotary shaft 12 is rotated around the auxiliary shaft 13, the arm 4 and the outer ring 3 are rotated around the inner ring 2 accordingly, and the treatment element 5 is located in the front direction in which the back surface of the user is located. By changing the amount of protrusion to, it is possible to selectively perform a strong massage and a weak massage when rotating the main shaft 1 to obtain a massage. The strength can be adjusted.

When the rotating shaft 12, not the main shaft 1, is rotated about the main shaft 1, the connecting link 8 which is moved as the crankshafts 12a and 12b, which are the eccentric parts of the rotating shaft 12, rotate the ball joint 70. The arm 4 connected via the arm 4 is moved, and the movement of the arm 4 at this time is a movement of rotating with the outer ring 3 around the inner ring 2 that is stopped.
Although it depends on the position of the inner ring 2, when viewed from the front, a straight line reciprocating motion in the up-and-down direction is performed, and a pounding massage is performed. Incidentally, both crankshafts 12a, 1 of the rotary shaft 12
Since the eccentric directions of 2b are opposite to each other, the tapping operation by the pair of massaging elements 5, 5 is alternately performed.

When the pinion 17 is rotated by the motor, the massage machine is engaged with the backrest 84 of the chair by the engagement of the rack 91 and the pinion 17 with the rail 9.
Move up and down along 0. Therefore, the position of the treatment element 5 can be changed up and down. At this time, a rolling massage in which the treatment element 5 moves while rubbing the back surface of the human body can be obtained. When the screw shaft 14 is further rotated, the treatment element 5 moves in the axial direction of the main shaft 1, and the portion to be treated is the shoulder or the neck in order to change the interval between the pair of treatment elements 5 and 5. The position of the treatment element 5 in the axial direction can be changed depending on the presence or absence of the treatment element 5.

Here, the strength adjustment by rotating the feed screw 15 and the interval adjustment of the treatment elements 5, 5 by rotating the screw shaft 14 cannot both be operated independently, and the main shaft 1 Alternatively, one of the rotation shafts 12 is necessarily rotated. That is,
The strength adjustment and the interval adjustment can be performed only in the state where the massage of the main shaft 1 is rotated and the massage of the rotary shaft 12 is rotated. Such control is performed by controlling the electromagnetic clutch arranged between the motor and each part, but when adjusting the strength or the interval, either the massage of fir tree or the massage of beating must be done. Therefore, when making these adjustments, the treatment elements 5 and 5 are dangerously strengthened,
Or the situation that the intervals are too narrow does not occur.

Further, the gas spring 16 in the constituent member for adjusting the strength is to prevent the treatment element 5 from being bent when a load is applied to the treatment element 5 and to prevent an excessive load from being applied to the human body. As shown in, a pair of cylinders 16
A high pressure gas is filled into the inside of the combination of a and 16b, and the inner space of one cylinder 16a and the inner space of the other cylinder 16b are communicated with each other through a communication hole 16c having a small cross-sectional area provided in one cylinder 16a, Further, the coil spring 16d disposed in the other cylinder 16b is configured to elastically urge one cylinder 16a, and an external force is applied to the gas spring 16 which is in a stretched state by the spring force of the coil spring 16d. When the high pressure gas in the space inside the cylinder 16b flows into the space inside the cylinder 16a when the coil spring 16d is contracted against the coil spring 16d, the resistance when passing through the communication hole 16c is
Although it is designed to perform damping, a plurality of communication holes 16c having different cross-sectional areas, a rotary plate 16f for selectively opening any one of the plurality of communication holes 16c by rotation thereof, and this rotary plate 16f is a permanent magnet 16g, 16h
Ring 16 rotated from the outside by magnetic coupling between the two
i. If the cross-sectional area of the communication hole 16c changes, the spring constant of the gas spring 16 also changes, so the way in which the treatment element 5 hits the human body also changes, and a massage of desired hardness can be obtained. is there. A similar effect can be obtained by using a fluid spring that uses oil as a working fluid instead of the gas spring 16 in which the high pressure gas is sealed.

In the embodiment shown in FIGS. 4 and 5, a pair of connecting links 8, 8 connecting the respective arms 4, 4 and the rotary shaft 12 are attached by a spring 8a in a retractable and contractible direction. It is supposed to be energized. In this structure, the connecting link 8 extends against the spring 8a when the load F is applied to the treatment element 5 as shown in FIG. 5, and for this reason, the crankshafts 12a and 12b of the rotary shaft 12 are prevented from moving. A pair of treatment elements 5, 5 caused by different eccentric directions
The step d is absorbed by the expansion and contraction of the connecting link 8 so that both treatment elements 5 and 5 evenly contact the user's body, so that a left-right unbiased massage can be obtained.

In the embodiment shown in FIG. 6, a pair of motor blocks 20, 20 are arranged at both ends, and a main shaft 1, a rotary shaft 12, and a screw shaft 14 are independently provided for both left and right treatment elements 5, 5. One motor block 20 controls all the operations of the one massaging element 5, and the other motor block 20 controls all the operations of the other massaging element 5, so that the kneading, tapping, interval adjustment, and strength adjustment can be performed. The left and right treatment elements 5, 5 can be independently performed. In this case, the treatment elements 5, 5 are
Can be adjusted to the stiffened position of both shoulders, and the strength can be changed left and right, so that a more effective massage according to the user's condition can be obtained.

The embodiment shown in FIG. 7 is a motor block 20.
The warm air exhausted from the motor with the cooling fan is guided to the exhaust passage 84a arranged in the center of the front surface of the backrest 84, so that the back portion of the user can be warmed. By warming your back, you can enhance the massage effect. Further, as shown in FIG. 8, if a vibration generator 88a having an eccentric weight attached to the motor output shaft is installed on the back side of the headrest portion 88, the head can be massaged. As shown in FIG. 9, a recess 83a is formed on the upper surface side of the armrest 83 so that a user's arm can be inserted therein, and the portion facing the inner surface of the recess 83a is alternately expanded and contracted by the air sent from the pump 83b. Air bag 83c,
If 83d is arranged, the arm can be massaged. In addition, if you install a temperature sensor that can detect the temperature of your arm or hand so that the massage operation ends when the detected temperature reaches a predetermined temperature, massage at an appropriate time that suits the user. It can be ended and the massage will not be overkill.

[0022]

As described above, according to the present invention, the massaging element is moved during the massage operation to adjust the strength and the interval, so that the strength is too strong or the interval is too narrow. The situation does not occur, and the user is not overloaded.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view of a chair including the same.

3A and 3B show another example of the gas spring used in the above, wherein FIG. 3A is a sectional view and FIG. 3B is a horizontal sectional view.

FIG. 4 is an exploded perspective view of a connecting link according to another embodiment.

FIG. 5 is an operation explanatory view of the above-mentioned connecting link.

FIG. 6 is a perspective view of another embodiment.

FIG. 7 is a rear view of another massage machine.

FIG. 8 is a side view of the above.

9 (a) and 9 (b) are side views of the armrest portion of the same.

[Explanation of symbols]

 5 treatment child

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Fumihiro Nishio Inventor, 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works Co., Ltd.

Claims (5)

[Claims] 1. A massage machine comprising a pair of left and right massaging elements that perform a massaging operation, a mechanism for adjusting the distance between the massaging elements, and a mechanism for adjusting the intensity of the massaging operation by both massaging elements. A massager characterized in that the operation can be performed only for the massager during the massage operation. 2. The massage machine according to claim 1, wherein the treatment element includes a gas spring that receives a reaction force of a massage operation applied to the human body, and the elastic force of the gas spring is variable. 3. A massager, comprising a fluid spring, which uses a liquid as a working fluid, instead of the gas spring according to claim 2. 4. The massage machine according to claim 1, wherein both treatment elements are supported by independent spring suspension members. 5. The massage machine according to claim 1, further comprising a drive mechanism that independently drives both treatment elements.