JPH0112494B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a pine massage machine equipped with a pair of kneading wheels as treatment elements, which are eccentrically and inclinedly attached to a rotationally driven main shaft.

[Conventional technology]

As shown in FIG. 6, the main shaft 41 is rotationally driven.
In a pine surge machine in which a pair of kneading wheels 7, 7 are attached eccentrically in the same direction and inclined in opposite directions, as the main shaft 41 rotates, the kneading wheels 7, 7
The distance between the parts in contact with the body changes periodically, and at the same time the distance from the main axis 41 changes periodically,
This movement of the massage wheels 7, 7 gives a massage massage to the body. In the figure, 89 is a cylindrical member disposed between the two kneading wheels 7, 7, and the main shaft 41 is designed to prevent the neck from getting caught between the two kneading wheels 7, 7.
It is installed coaxially with the

[Problem to be solved by the invention]

This pine surge is performed by twisting and pushing out the body that is placed between the 2 kneading wheels 7, 7, but with conventional pine surge machines of this type, There is a problem in that the sensation of pine surge is monotonous with no change in intensity. The present invention has been made in view of these points, and its purpose is to provide a pine surge machine that has varying degrees of strength in pine surge.

[Means to solve the problem]

Therefore, the pine surgery machine according to the present invention is a pine surgery machine in which a pair of kneading wheels, which are attached eccentrically and inclined to the rotationally driven main shaft, are used as treatment elements. It is characterized in that an eccentric cylindrical body receiving member connected via a speed change means is provided between both kneading wheels. [Function] According to the present invention, while the kneading wheel performs kneading massage several times as the main shaft rotates, the amount of protrusion toward the body of the body support member disposed between the two kneading wheels is reduced. Gradually changing the amount of body that enters between the two kneading rings gives a change in the strength of the kneading pine surge. [Example] The present invention will be described in detail below based on the illustrated example.As shown in FIGS. 3 and 4, this is a chair in which a pine surge mechanism is incorporated in the backrest, and the chair here has the following features: A pair of underframes 2, 2 as legs and a headrest 10 at the upper end
, a backrest frame 1 with side cushions 20 on both sides of the front and a seat cover 8 on the front.
and a seat frame 3, and the seat frame 3 is disposed between both under frames 2, 2, and the frame 1 is connected to the seat frame 3. Both the frame 1 and the underframes 2, 2 are made of synthetic resin, and the frame 1 in particular is made of glass fiber-reinforced synthetic resin to have high strength. The seat frame 3 is formed of a pipe material 30 and has a wire 31 attached to its upper surface, and a cushion 33 is arranged on the upper surface by hooking the wire 31 to a locking portion 32. Each underframe 2 includes an upper horizontal piece 22 on which an armrest 23 is provided, a grounding horizontal piece 21, and a front vertical piece 24 and a rear vertical piece 25 that connect these two pieces.
The seat frame 3 is fixed to the vertical piece 24 and the rear vertical piece 25 with screws. Since the frame 1 of the backrest is pivoted on both sides of the lower end to the rear end of the seat frame 3 and can be reclined freely, the horizontal grounding piece 21 extends further rearward than the rear vertical piece 25, and the grounding horizontal piece 21 extends further rearward than the rear vertical piece 25. Wheels 29 are attached to the ends for ease of movement. Frame 1, as shown in FIGS. 1 and 4,
It is a box-shaped item with an open front and a bottom, and has a vertically long concave rib 12 at the center of the back, a recess 14 at the lower end of the back to improve strength, and both sides of the front. The section is provided with an outer wall 15 and a stepped surface 16 located inside the outer wall 15 and projecting toward the front side, and a rack 11 is further formed integrally with the frame 1 inside each stepped surface 16. Incidentally, the rail portion constituted by the stepped surface 16 and the rack 11 has a curved shape that matches the curved shape of the back surface of the human body. In the figure, reference numeral 9 denotes a back support plate that is fixed to both sides of the front side of the frame 1 by screwing to bosses provided on the outer wall 15, and is located in front of the step surface 16 and between it and the step surface 16. It forms a running path for rollers 49 for running guides of the pine surge mechanism 4, which will be described later.
Note that the upper end of this running path is closed by a stopper 40. In addition, the upper front surface of the frame 1 serves as an attachment part for the headrest 10.
A fixing boss 17 is provided. As mentioned above, the frame 1 of this backrest is attached to the seat frame 3 so as to be able to recline freely. To explain this structure, hinge plates 71 are attached to the seat frame 3 by hinge pins at the lower part of the inner surface at both ends of the frame 1. It is rotatably connected to the rear end of the. Further, a gas spring is installed between the plate fixed to the recess 14 at the lower back of the frame 1 and the lower horizontal piece at the rear end hanging portion of the pipe material 30 of the seat frame 3. This gas spring has a valve on the piston in the cylinder to which the piston rod is connected, and this valve can be opened and closed by operating the reclining lever 75. When the valve is opened, the sealed oil is released. Since the piston can freely flow in front and behind it, the internal gas pressure expands and exerts a force to raise the frame 1 of the backrest, and when the valve is closed, the frame 1 stops at the current angle. To recline the backrest, all you have to do is open the valve and push the backrest in the direction it will fall. A front cover 8 is attached to the front opening of the frame 1 of the backrest. The front cover 8 has a pleat in the center, and the upper end is fixed to the hook hole 18 at the upper end of the frame 1 by a hook spring 81, and the side edges are attached to the frame 1 through the back cushion 20 and the back support plate 9, respectively. attached to both sides of the A connecting tab 82 extending from the center of the lower end of the front cover 8 is connected to a pair of hinge plates 71, 71.
It is folded back along the circumferential surface of a bar 76 installed therebetween and connected to the lower end of a center belt 83 via a spring 84. The center belt 83 has an upper end fastened to the hook hole 18 at the upper end of the frame 1 with a metal fitting 85, and is located at the back of the central portion of the front cover 8. Each back cushion 0 consists of a core material 93 made of synthetic resin and a cushion body 84 whose surface is covered with fabric, and both side edges of the front cover 8 are connected to the thin inner back surface with rivets. . Piano wires 86 provided on both side edges of the front cover 8 are for reinforcement. Now, the pine surge mechanism 4 supported by the frame 1
will be explained next. The pine surge mechanism 4 shown here has a pair of kneading wheels 7, 7 that are rotationally driven as pine surge members, both eccentric in the same direction and inclined in opposite directions,
These kneading wheels 7, 7 are attached to the main shaft 41. The main shaft 41 is formed of a hollow pipe, into which a drive shaft 42 is inserted. The main shaft 41 is for rotationally driving the kneading wheel 7 to which the kneading wheel 7 is fixed, whereas the drive shaft 42 is for moving the main shaft 41 and the kneading wheel 7 in the vertical direction along the frame 1. A roller 49 and a pinion 48 are attached to one end via a cylindrical body 62, and a roller 49 and a pinion 48 are directly attached to the other end. The cylindrical body 62 is freely rotatable with respect to the main shaft 41. A control box 65 is disposed on one end of these shafts, and a gearbox 66 is disposed on the other end, and shafts on which rollers 49 are mounted protrude from the control box 65 and gearbox 66. ing. Therefore, this pine surge mechanism 4
has a total of four rollers 49. The control box 65 houses a control circuit that controls the operation of the pine surge mechanism 4 based on input from the operating device 78, and is connected to a power supply box arranged on the lower surface of the seat frame 3 with a curl cord 80. It is also connected to an operating device 78 via a power supply box. The gearbox 66 has a motor 47 attached to its side, and a differential reducer 50 and a group of reduction gears are housed inside, and the power of the main shaft 41, drive shaft 42, and motor 47 is selectively transmitted through these. are doing. The differential reducer 50 is connected to the motor 4
7, an output shaft 51 of No. 7, a planetary roller 52 rolling on the outer peripheral surface of the output shaft 51, an inscribed ring 53 and an inscribed ring 54 in which the large diameter part and the small diameter part of the planetary roller 52 are inscribed, respectively. It is composed of an output gear 55 provided on the outer peripheral surface and an output gear 56 provided on the outer peripheral surface of the internal ring 54, and the reduction gear group is fixed to the shaft 63 and meshes with the output gear 55, and the cylindrical body Gear 57 fixed to 62
A gear 60 that meshes with the output gear 56, a gear 61 that is fixed to the shaft 64 and meshes with the output gear 56, and a driven elliptical gear 5 that is also fixed to the shaft 64 and attached to the main shaft 41.
8 and an elliptical gear 59 meshing with each other. Now, if the shaft 63 is braked by the electromagnetic brake 68 provided at one end of the shaft 63, the rotation of the output gear 55 and the internal ring 53 is locked, so that the large diameter portion and the small diameter portion of the planetary roller 52 are Differential rotation due to the diameter difference is transmitted to the main shaft 41, and the kneading wheel 7 is rotationally driven. Here, since the kneading wheels 7 are attached to the main shaft 41 in an eccentric and inclined state as described above, the kneading wheels 7, 7 protrude toward the front cover 8 side as the main shaft 41 rotates. The distance between the parts in contact with the front cover 8 is changed periodically, and by these movements, the back of the human body leaning against the backrest is massaged. Each kneading ring 7 has an eccentric inner ring 44 fixed to the main shaft 41.
and an outer ring 46 disposed around the outer periphery of the eccentric inner ring 44 via balls 45 so as to freely rotate. Furthermore, the reason why the elliptical gear 59 and the driven elliptical gear 58 are provided in the power transmission path to the main shaft 41 is as follows.
This is because when the amount of protrusion of the kneading wheels 7 to the front cover 8 is increased, that is, when the force exerted on the human body is increased, the torque of the kneading wheels 7 is increased. An electromagnetic brake 69 disposed at one end of the shaft 64
3, the rotation of the output gear 56 and the internal ring 54 is locked, so that the differential due to the difference in diameter of the planetary rollers 52 is similarly transmitted to the drive shaft 42. At this time, since the pinion 48 meshing with the rack 11 through the cylinder 62 rotates, the pine surge mechanism 4, which brings each roller 49 into contact with the running road surface in front of the stepped surface 16, moves vertically. . The body support member 5 in this pine surge machine configured as described above has an inner race 111 attached to the main shaft 41 between both kneading wheels 7, 7.
, an eccentric retainer 112 freely rotatably disposed on the outer peripheral surface of the inner race 111, and an eccentric retainer 11
The outer race 113 is rotatably attached to the left and right sides of the outer circumferential surface of 2, respectively. Since the eccentric retainer 112 here is eccentric with respect to the main shaft 41, the outer race 113 located on the outer peripheral surface of the body receiving member 5 is also eccentric with respect to the main shaft 41. Further, in the center of the eccentric retainer 112, there is a gear 114 formed coaxially with the main shaft 41, which meshes with a gear 116 fixed to a shaft 115. Also, a gear 118 provided at one end of the shaft 115
is engaged with a gear 117 fixed to the main shaft 41. Since the number of teeth of the gear 117 is a fraction of that of the gear 118, when the main shaft 41 rotates several times, the body receiving member 5 also rotates once around the main shaft 41. . In this pine surge machine, the above-mentioned movement of the two kneading wheels 7, 7 by rotating the main shaft 41 performs pine surge, in which the body placed between the two kneading wheels 7, 7 is pushed out while twisting. At this time,
The amount of body massaging between the two massaging wheels 7, 7 is adjusted by the body receiving member 5, but while the massaging wheels 7, 7 rotate several times and perform massaging massage several times, the eccentricity The eccentric body receiving member 5 having the retainer 112 gradually increases the amount of protrusion toward the front cover 8 side, and then, while the massage wheels 7 rotate several times, the body receiving member 5 gradually decreases the amount of protrusion toward the front cover 8 side. Here, when the amount of protrusion of the body support member 5 toward the front cover 8 side is large, the amount of the body that fits between the two kneading wheels 7, 7 becomes small, resulting in a weak pine surge state, as shown in FIG. As shown, when the amount of protrusion of the body receiving member 5 toward the front cover 8 side is small,
Since the amount of the body that fits between the two kneading wheels 7, 7 becomes larger, a state of strong pine surge is created, and this change in strength is automatically made. A permanent magnet 120 provided on the gear 118 is connected to a reed switch 119 arranged on the outer surface of the control box 65.
The permanent magnet 120 operates the reed switch 11 in the illustrated state, that is, in the state in which the amount of protrusion of the body receiving member 5 toward the front cover 8 side is the minimum and the strongest massage is performed.
9 is activated. As shown in FIG. 5, this reed switch 119 is a normally closed type connected in parallel with a power switch 121 between the control circuit C housed in the control box 65 and the power plug. Even after the power switch 121 is turned off, the pine surge machine continues to operate until the reed switch 119 is turned off. For this reason, when the power switch 121 is turned off to stop the operation, the body receiving member 5 is always in the first position.
It is stopped in a state where the strong pine surge shown in the figure can be performed, and then the power switch 12 is turned on.
When 1 is inserted and activated, it always starts with a strong pine surge, and then gradually the body receiving member 5
The body is pushed out from between the massage wheels 7, 7. This means that the feeling of massaging has been improved. [Effects of the Invention] As described above, in the present invention, while the kneading wheel performs kneading massage several times as the main shaft rotates, the body receiving member disposed between the two kneading wheels moves toward the body side. The amount of protrusion of the massager gradually changes to change the amount of the body that fits between the two massage rings, giving a change in strength to the massage pine surge, and it is possible to obtain an effective pine surge that is not monotonous.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a cutaway side view of the body receiving member of the above, FIG. 3 is a perspective view of the same, FIG. 4 is an exploded perspective view of the same, and FIG. The same block circuit diagram as above and FIG. 6 are cross-sectional views of the conventional example, in which 5 is a body support member, 7 is a kneading wheel, and 41 is a main shaft.

Claims (1)

[Claims] 1. A pine massage machine whose treatment elements are a pair of kneading wheels attached eccentrically and inclined to a rotatably driven main shaft, which can freely rotate around the main shaft, and which are connected to the main shaft via a speed change means. A pine surge machine equipped with an eccentric cylindrical body receiving member between both kneading wheels.