JPH06304222A - Massage machine - Google Patents

Abstract

PURPOSE:To provide a massage machine capable of accurately detecting any detection target such as a moving position or the like by means of simple and economical constitution. CONSTITUTION:At least one of driving motors 33, 84 and 102 is equipped and at least one driving motor 102 among these motors is employed under such conditions that the rotary shaft 102a penetrates axially through a motor frame 102b so as to form both ends of the rotary shaft 102a as respective output ends. A fan 151 is mounted to one of both output ends and provided with a through hole (part to be detected) located out of the center. A sensor 154 for making no-touch detection of the through hole 153 is disposed near the fan 151. Thus, the fan 151 serves also as a rotary encoder plate while the control output velating to the moving position by the like of the whole massage machine, for example, is obtained by the use of the rotary encoder plate directly connected to the motor 102.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is incorporated in a backrest portion of a chair, bed, or the like on which a user's back rests, and strikes or rubs the user's back or the like by a massage operation of a massager such as a massage roller. It is about a massage machine that massages.

[0002]

2. Description of the Related Art For example, there is a conventional massage machine having a structure in which it is moved up and down by a driving force of a motor, which is provided with means for detecting the vertical movement position thereof. The moving position detecting means is implemented by counting the operating time of a motor for moving the massage machine by using a microcomputer, and by rotating the massage machine ascending / descending feed screw shaft by the motor. It is known that an encoder plate is attached and a small hole provided in this plate is detected by an optical sensor. Further, when the operating time of the motor is long, the motor is accompanied by considerable heat generation. Therefore, a fan is attached to the rotating shaft of the motor and the air is cooled by the air blowing action of the fan. There is.

[0003]

However, in the case where the moving position is detected based on the drive time of the motor, the same drive time is required when the massage machine is moved up and down due to the effect of the weight of the massage machine. However, there is a problem that it is difficult to accurately detect the moving position of the massage machine because the moving distance is different and the moving distance at the same drive time is different due to the difference in the load (weight) applied to the massage machine. .

Further, in the case of using the optical sensor for detecting the moving position, the rotary encoder plate and the fan for cooling the motor for rotating the feed screw shaft for lifting the massage machine supporting the encoder plate are provided.
There is a problem that the number of parts is large and the labor for assembling is increased, and therefore the configuration is complicated and the cost is high.

An object of the present invention is to provide a massage machine which can accurately detect a detection object such as a moving position and can be obtained at a low cost with a simple structure.

[0006]

In order to achieve the above object, a massage machine according to the present invention comprises at least one drive motor, and at least one of the drive motors has a rotary shaft. Employs a motor frame that penetrates the motor frame in the axial direction and has both ends of the rotary shaft as output ends.A fan is attached to one of the output ends, and the fan is not centered. A detected portion to be positioned is provided, and a sensor for detecting the detected portion in a non-contact manner is arranged near the fan.

[0007]

In the massage machine having the above-mentioned structure, the motor supplies power for performing either movement of the massage machine or the like or massage operation such as kneading massage or hitting massage. The fan attached to the rotating shaft of this motor produces a blowing effect by its rotation,
The air is cooled by the air blow. Further, as the fan rotates, the detected portion located off the center of the fan is eccentrically rotated with respect to the rotating shaft, so that the fan can be used as a rotary encoder plate. Further, the sensor detects the detected portion and supplies an output for controlling the movement or massage operation to the motor control unit.

As described above, in the massage machine of the present invention, the detection output is obtained by using the fan and the sensor directly connected to the rotary shaft of the motor, which also serves as the rotary encoder plate. In addition, since the encoder plate is also used as a fan for air-cooling the motor, the number of parts and the assembling work can be reduced, and the structure can be simplified.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. The machine frame indicated by reference numeral 21 in FIGS.
The left and right side plates 22 and 23, the horizontal members 24 and 25 which are horizontally installed across the side plates 22 and 23, and the other horizontal members 26 and 2.
7 and 7. The horizontal member 26 is horizontally installed across a side plate 22 and a speed reducer case, which will be described later, connected to the side plate 23.
The horizontal member 27 is cantilevered by the side plate 22.

A drive unit 31 is arranged in the machine frame 21 at a substantially central portion in the width direction. The unit 31 includes a housing 32 that forms a gear box, and a first motor 33 that is connected to the outer surface of the housing 32 and that can rotate in the forward and reverse directions. The housing 32 is a horizontal member 2
While being abutted and supported on the inner surface of the central part of 4, 25,
It is bolted to the horizontal member 27. As shown in FIG. 7 and the like, the rotary shaft 33 a of the first motor 33 is formed in a gear shape having teeth around the entire outer periphery and is inserted into the housing 32.

A gear unit 34 is built in the housing 32. That is, reference numeral 41 in FIGS. 7 and 8 denotes an input shaft which extends in the left-right direction and whose both ends are rotatably supported by bearings 42. The input shaft is fitted to the outer periphery of the input shaft and fixed so as to be integrally rotated. The input gear 43 is meshed with the rotating shaft 33a of the first motor 33. A rubbing type transmission gear 45 is attached to the outer circumference of the input shaft 41 via a first one-way clutch 44, and a striking type transmission gear 47 is attached via a second one-way clutch 46.

When the rotary shaft 33a of the first motor 33 is reversely rotated, the first one-way clutch 44 enters the "on" state to transmit the rotation of the input shaft 41 to the massaging system transmission gear 45, and When the rotation shaft 33a of the first motor 33 is normally rotated, it is in the "off" state and cuts the rotation of the input shaft 41 to the kneading system transmission gear 45. On the contrary, the second one-way clutch 46 enters the “on” state when the rotating shaft 33a of the first motor 33 is normally rotated, and the input shaft 4
1 rotation is transmitted to the striking transmission gear 47, and
When the rotating shaft 33a of the motor 33 is rotated in the reverse direction, it is in the "off" state and cuts off the rotation of the input shaft 41 to the striking system transmission gear 47.

As shown in FIG. 7, in the housing 32, a support shaft 48 which is laid horizontally in parallel with the input shaft 41 is press-fitted into a shaft support tubular portion 49 formed in the housing 32 so as to be cantilevered. There is. The large diameter gear portion 50 a of the first reduction gear 50 rotatably supported by the shaft 48 is meshed with the kneading system transmission gear 45. Further, the housing 32 contains a second reduction gear 51 as a kneading system output gear, and the gear 51 is a small-diameter gear portion 50 of the first reduction gear 50.
It is meshed with b.

In the housing 32, a kneading massage shaft 52 extending in the left-right direction and protruding from both side surfaces of the housing 32 is rotatably supported by a pair of bearings 53. The central portion of the shaft 52 in the axial direction penetrates the boss portion 51a of the second reduction gear 51 and is spline-engaged with the inner peripheral surface of the boss portion 51a.

Therefore, the first one-way clutch 44,
The kneading massage shaft 5 is kneaded from the input shaft 41 by the transmission parts such as the kneading system transmission gear 45 and the first and second reduction gears 50 and 51.
A kneading transmission system up to 2 is formed, and the rotation of the input shaft 41 rotated by the first motor 33 is decelerated by the transmission system and transmitted from the first one-way clutch 44 to the kneading massage shaft 52. It has become so.

As shown in FIG. 8, a striking system output gear 54 which meshes with the striking system transmission gear 47 is built in the housing 32. Further, the housing 32 includes
A beating massage shaft 55 protruding from both side surfaces thereof is rotatably supported by a pair of bearings 56. This axis 5
Reference numeral 5 is parallel to the kneading massage shaft 52, and its axial center portion penetrates the boss portion 54a of the output gear 54 and is spline-engaged with the inner peripheral surface of the boss portion 54a.

Therefore, the second one-way clutch 46,
A power transmission component such as the power transmission gear 47 for the hitting system and the output gear 54 for the hitting system forms a hitting transmission system from the input shaft 41 to the hitting massage shaft 55. With this transmission system,
The rotation of the input shaft 41 rotated by the first motor 33 is decelerated and transmitted from the second one-way clutch 46 to the hitting massage shaft 55.

The drive unit 31 has an electromagnetic brake 57. The brake 57 is mounted on the outer surface of the housing 32 so as to be located on the side opposite to the first motor 33. The electromagnetic brake 57 is of a non-excitation type, that is, of a type that exerts a function of braking the brake shaft 57a shown in FIG. 7 when energized and releases the braking function of the brake shaft 57a in a non-energized state. Has been adopted. The brake shaft 57a is inserted into the housing 32, and the brake gear 58 is fixed to the brake shaft 57a. The brake gear 58 is meshed with the massaging system transmission gear 45.

When the rotating shaft 33a of the first motor 33 is normally rotated in the drive unit 31 having the above-described structure, the rotation is transmitted to the input shaft 41 via the input gear 43, and the second shaft is rotated.
The striking system transmission gear 47 is rotated via the one-way clutch 46. At this time, the first one-way clutch 44 is in the “disengaged” state, and no power is applied to the kneading massage shaft 52. Therefore, the beating massage shaft 55 is decelerated and rotated via the beating system output gear 54 meshed with the beating system transmission gear 47. When the shaft 55 is driven to rotate,
The electromagnetic brake 57 is energized, and the massage of the massage system is prevented from moving due to the weight of the user.

When the rotating shaft 33a of the first motor 33 is reversely rotated while the electromagnetic brake 57 is not operating, the rotation is transmitted through the input gear 43 and the input shaft 41 and the first one-way clutch 44. Is transmitted to the kneading type transmission gear 45. At this time, the second one-way clutch 46 is in the “disengaged” state, power is not applied to the hitting massage shaft 55, and the brake shaft 57a and the brake gear 58 rotate integrally. Therefore, the rotation of the massaging system transmission gear 45 is
It is decelerated via the first and second reduction gears 50, 51 and transmitted to the massage massage shaft 52, which is rotated at a low speed.

Both ends of the kneading massaging shaft 52 penetrating the housing 32 have side plates 2 as shown in FIG.
It is rotatably supported by bearings 61 respectively attached to Nos. 2 and 23. As shown in FIGS. 5 to 7, 9 and 10, keys 62 are attached to the left and right side portions of the kneading massage shaft 52 that protrude from the housing 32, respectively. In FIG. 7, 63 is a retaining ring for preventing the key 62 from coming off, and 64 is a retaining screw.

Movable sleeves 65 are attached to the both sides of the kneading massage shaft 52, respectively. The pair of sleeves 65 are fitted to the both side portions so as to be slidable in the axial direction of the massage shaft 52. The movable sleeve 65 has an eccentric cam portion 65a and a connecting portion 65b as shown in FIG.

The eccentric cam portion 65a is a short-axis portion having an axis line that is eccentric and inclined with respect to the axis line of the movable sleeve 65. The inclinations of the axes of the eccentric cam portions 65a of the movable sleeves 65 are opposite to each other. The connecting portion 65b is provided concentrically with the axis of the movable sleeve 65.

A hub 67 is attached to the outer peripheral surface of the eccentric cam portion 65a via a bearing 66. Therefore, the pair of hubs 67 are provided on the both side portions of the kneading massage shaft 52,
The shaft 52 is supported while being inclined in opposite directions. As shown in FIGS. 1, 2, and 9, an arm 68 is connected to the hub 67, and a massage roller 69 as a treatment element is rotatably attached to the tip of this arm 68.

As shown in FIG. 5, the housing 32
Both ends of the hitting massage shaft 55 that penetrates the
5 is provided coaxially with the housing penetrating portion, and the side plate 2
Bearings 71 attached to the inner surfaces of the bearings 1 and 22 via bearing brackets 70 are rotatably supported. As shown in FIG. 8, the portions between both ends of the hitting massage shaft 55 and the housing penetrating portion form eccentric shaft portions 55a and 55b that are eccentric with respect to these. The eccentric shaft portions 55a and 55b are eccentric to each other by 180 °.

Metal bearings 72, which are slidable in the axial direction, are fitted to the eccentric shaft portions 55a and 55b, respectively. Figure 9
As shown in FIG. 2, band-shaped joints 73 are connected to the outer circumferences of both metal bearings 72, respectively, and one end of a connecting rod 74 commonly called a ball stud is connected to the joint 73 via a pin 75. Thus, the connecting rod 74 is rotatable about the axis of the pin 75.

The spherical other end 74a of the connecting rod 74 is connected to the hub 67. The connecting portion between the connecting rod 74 and the hub 67 is a spherical pair, and therefore, the other end of the connecting rod 74 is rotatably connected to the hub 67 in a universal joint shape.

Since the joint 73 is connected to the hub 67 via the connecting rod 74 in this manner, the rotary shaft 33a of the first motor 33 is normally rotated as described above, and the hitting massage shaft 55 is appropriately rotated. When rotated at various speeds, the joint 73 connected to the metal bearing 72 strikes the massage shaft 55.
The hitting massage shaft 55 is rotated while sliding on the inner peripheral surface of the metal bearing 72.

By the way, since the shaft centers of the eccentric shaft portions 55a and 55b in which the metal bearings 72 are fitted are eccentric, the joint 73 and the connecting rod 74 are moved in the longitudinal direction with a stroke twice the eccentric amount. It is moved back and forth. for that reason,
The pair of hubs 67 are pushed and pulled by the corresponding connecting rods 74 and reciprocally rotated around the bearing 66. Along with this, the massage roller 69 is synchronously moved via the arm 68, and the massage roller 69 makes a striking motion.

The eccentric shaft portions 55a and 55b are separated from each other by 1
Since the pair of massage rollers 69 are eccentrically displaced from each other by 80 °, the pair of massage rollers 69 are moved in the opposite directions, and at this time, the rubbing massage shaft 52 does not receive a rotational force.

When the rotary shaft 33a of the first motor 33 is reversely rotated and the massaging massage shaft 52 is properly rotated at a low speed, a pair of movable sleeves 65 are formed together with the shaft 52 via the key 62. Is rotated. Therefore, the eccentric cam part 65a massages the massage shaft 5 according to the inclination of the axis.
It is apparently displaced so as to swing about the axis of 2.

By the way, the hub 67 fitted to the eccentric cam portion 65a via the bearing 66 is connected to the joint 73 via the connecting rod 74 to restrain the rotation. Therefore, the hub 67 performs a swinging motion about the axis of the kneading massage shaft 52 in synchronization with the apparent displacement of the eccentric cam portion 65a.

At this time, slippage occurs at the universal joint-shaped connecting portion between the hub 67 and the connecting rod 74, and the connecting rod 74
Is rotated around the axis of the pin 75 with respect to the joint 73 to enable the swing motion.

A pair of hubs 67 operated in this way
Since the arm 68 is similarly swung with the swinging motion of
The pair of massage rollers 69 are synchronously moved toward and away from each other, whereby the massage roller 6 is moved.
9 massages.

Side plate 2 as shown in FIGS.
The bearing 8 is mounted on the inner surfaces of the bearings 2 and 23 via the bearing bracket 81.
2 are respectively supported, and a width adjusting screw shaft 83 is rotatably provided horizontally across these bearings 82. The screw shaft 83 has a mutual distance A between the pair of massage rollers 69.
It is used to vary (see FIG. 6) and is arranged parallel to each massage shaft 52, 55.

Numeral 32a in FIG. 10 is a width adjusting screw shaft 83.
It is a recess formed in the housing 32 to escape. The width adjusting screw shaft 83 has screw portions 83a, respectively on shaft portions arranged so as to project to both left and right sides of the housing 32.
83b, and these screw portions 83a and 83b are reverse-threaded to each other.

As shown in FIG. 9 to FIG. 11 and the like, a moving element 92 as an interlocking member that is moved in the axial direction of the width adjusting screw shaft 83 by interlocking with the hub 67 is respectively attached to both screw portions 83a and 83b. It is screwed. As shown in FIG. 8, the pair of moving elements 92 each have an interlocking protrusion 92a having a substantially U-shape in a plan view (in FIG. 8), and the walls of the protrusions 92a facing each other are recessed. 93 is formed. Interlocking protrusion 9
The hitting massage shaft 55 is inserted into the 2a through the recess 93, and the metal bearing 72 and one end of the joint 73 sandwiching the metal bearing 72 are fitted in the interlocking protrusion 92a.

Of course, this fitting portion has a play so as not to interfere with the vibration of the joint 73 accompanying the rotation of the hitting massage shaft 55 and the movement of the joint 73 accompanying the rotation of the kneading massage shaft 52.

A connecting portion 65 of the pair of movable sleeves 65.
Hub supports 96 are rotatably fitted to the outer circumferences of b. As shown in FIG. 9, interlocking members 94 are screwed to the pair of moving members 92, respectively. These interlocks 94
The arm portion 94a is provided so as to hold the hub support 96 from its outer periphery, and is screwed.

On the inner surface of one of the side plates 22, a second motor 84 for width adjustment, which is rotatable in forward and reverse directions, is mounted above the kneading massage shaft 52 in FIGS. 10 and 12. A bearing bracket 85 is attached to the outer surface of the side plate 22 so as to face one bearing bracket 81 attached to the inner surface of the side plate 22.

Bearing brackets 81 and 8 facing each other
A driven pulley 87, whose both ends are rotatably supported by bearings 86, is provided between the gears 5, and a gear portion 88 is formed on a shaft portion of the pulley 87. At one end of the side plate 22 of the width adjusting screw shaft 83, a reduction gear 89 is provided.
Is attached, and this is meshed with the gear portion 88. A drive pulley 90 having a diameter smaller than that of the driven pulley 87 is attached to the rotary shaft of the second motor 84, and a timing belt 91 is provided between the two pulleys 87, 90 so as to extend therebetween.
Is wrapped around.

The width adjusting screw shaft 83, the second motor 84,
The driven pulley 87, the reduction gear 89, the drive pulley 90, the timing belt 91, the moving element 92, the interlock element 94, the hub support 96, and the like form a roller gap adjusting mechanism 95. This mechanism 95 includes a pair of massage rollers 6
9 is moved in the opposite direction to change the mutual distance A.

That is, when the second motor 84 is operated, the rotation of its rotation shaft is transmitted to the driven pulley 87 via the drive pulley 90 and the timing belt 91, and the rotation of this pulley 87 is transmitted to the gear portion 88 thereof. The width adjusting screw shaft 83 is rotated via the reduction gear 89 meshing with the.

By the way, the screw portion 83 of the screw shaft 83
The moving elements 92 screwed into the a and 83b are connected to the movable sleeve 65 via the interlocking element 94 and the hub support 96, and are restrained from rotating. Therefore, the pair of moving elements 92 are moved in the axial direction of the screw shaft 83 as the width adjusting screw shaft 83 rotates.

Since the screw portions 83a and 83b are reverse threads, the pair of moving elements 92 are moved in opposite directions. For example, the second motors 84 are brought closer to each other by the normal rotation, and are moved so as to be separated from each other by the reverse rotation. Simultaneously with these movements, the pair of movable sleeves 65 connected to the moving element 92 via the interlocking element 94 and the hub support 96 are moved in the axial direction of the kneading massage shaft 52, and thus the pair of massage rollers 58. The mutual interval A of is varied.

As shown in FIGS. 5 and 13, a speed reducer box 101 is attached to the side plate 23 of the machine frame 21, and a third motor 102 capable of normal and reverse rotation is attached to the outer surface of the box 101. Installed. Inside the box 101, a worm shaft 105 having an integral worm 103 and a reduction gear 104 attached thereto is supported at both ends via bearings 106, and a drive gear 107 meshing with the reduction gear 104 is built in. There is.
The drive gear 107 is attached to the rotary shaft 102a of the third motor 102 inserted in the speed reducer box 101.

A rotatable wheel gear shaft 108 is inserted in the speed reducer box 101. Incidentally, 122 is a retaining plate. A worm wheel gear 109 meshing with the worm 103 is attached to the wheel gear shaft 108. The wheel gear shaft 108 has a hollow structure, and one end of the wheel gear shaft 108 protruding outside the speed reducer box 101 has a pinion shaft 110 penetrating the wheel gear shaft 108 in the axial direction.
One end of each is connected by spline engagement (121 in FIG. 13 indicates a spline engagement portion).

As shown in FIG. 6, the reducer box 10
Shaft support portions 111 and 112 are provided on the side plate 1 and the side plate 22 so as to face each other, and a protective pipe 113 is horizontally extended through the shaft support portions 111 and 112. A pinion shaft 110 is rotatably passed through the pipe 113. A wheel gear shaft 108 is rotatably fitted to and supported by an outer periphery of one end of the protection pipe 113, which is inserted into the reduction gear box 101, via a sleeve 125 containing lubricating oil.

The one end of the wheel gear shaft 108 is formed as a pinion gear 114 by providing teeth on the outer peripheral surface thereof. A cap-shaped pinion gear 115 that covers the end of the protection pipe 113 is connected to the end of the side plate 22 of the pinion shaft 110 by spline engagement. Although not shown, this connecting structure is the same as the structure of the connecting portion between the wheel gear shaft 108 and one end of the pinion shaft 110.

The small diameter end 108a of the wheel gear shaft 108, which is connected to the pinion shaft 110, and the pinion gear 11.
A small-diameter end portion (not shown) similar to the small-diameter end portion 5 has a roller 116 rotatably supported by being fitted to the outer peripheral surface thereof.

The speed reducer box 101, the third motor 1
02, worm 103, reduction gear 104, drive gear 10
7, wheel gear shaft 108, worm wheel gear 109,
Pinion shaft 110, protection pipe 113, pinion gear 1
14, 115 and the roller 116 form a self-propelled mechanism 117 that moves the entire massage machine.

The rotation shaft 102 of the third motor 102 is
As shown in FIG. 6 and FIG. 14, the motor frame 102b is axially penetrated, and both ends of the rotary shaft 102a are used as output ends. And
The drive gear 107 is connected to one end of the rotary shaft 102a, and the fan 151 is connected to the other end.
The fan 151 is a shallow disc-shaped disc, and is provided with a plurality of rib-shaped blade portions 152 (see FIGS. 15 and 16) radially extending around the rotation shaft 102a on the inner surface thereof.

With the rotation of the fan 151, the blade portion 15
Since 2 performs the air blowing action, the motor 102 can be air-cooled by forming a flow of wind through the inside and the peripheral portion of the third motor 102 as shown by the arrow in FIG.

The fan 151 is provided with a through hole 153 as a detected portion at a position deviated from the center thereof. A sensor 154 is provided near the fan 151 and detects the through hole 153 in a non-contact manner. That is, as shown in FIGS. 3, 4 and 6, a sensor bracket 155 is screwed to the rear surface of the machine frame 23, and a portion of the bracket 155 facing the fan 151 corresponds to the through hole 153. Sensor 154 is attached.

As the sensor 154, for example, a reflection type optical sensor having a light projecting portion and a light receiving portion is used, and the light receiving portion is formed by an element for photoelectric conversion. Therefore, the light emitted from the light projecting portion is 1 per rotation of the fan 151.
Since the light passes through the through hole 153 only once, the reflected light does not enter the light receiving unit at this time, and otherwise the fan 15
The light reflected by 1 is incident on the light receiving portion, and thus the sensor 154 can detect the through hole 153 in a non-contact manner.

The output of the sensor 154 is input to the control unit 156 including the microcomputer shown in FIG. The controller 156 includes a remote controller 157.
A control command signal from the control unit 15 is input, and in response to this input, that is, an instruction from the remote controller 157.
6 designates the motors 33, 8 via the motor controller 158.
The start and stop of the operations of Nos. 4 and 102, and the forward and reverse rotations are controlled. In these motor controls, the control unit 156 controls the operation of the first motor 33 so as to rotate the kneading massage shaft 52 within a range of maximum 360 ° immediately before starting the hitting massage, and at the same time, this operation is performed. Accordingly, the operation of the first motor 33 is stopped at the stage where the predetermined rotational position of the kneading massage shaft 52 is detected by a rotational position sensor (not shown), and the electromagnetic brake 57 is kept energized during the hitting massage. Take control. The remote controller 157
Can give an instruction to individually execute various operation modes and the like, and can also give an instruction to perform a program operation mode in which a plurality of these operation modes are combined and executed in order.

A shaft supporting portion 118 is attached to the inner surfaces of the side plates 22 and 23 as shown in FIG. 11, and a roller supporting shaft 119 is laid across the side plates 22 and 23 so as to extend therethrough. There is. The roller support shaft 119 is the pinion shaft 1.
Rollers 120 are rotatably attached to both ends of the machine frame 21 that are parallel to the machine frame 10 and project laterally.

On the back of the backrest (backrest) of the chair in which the entire massaging machine is incorporated, rails C extending in the longitudinal direction of the backrest on both sides in the width direction (see FIGS. 10 and 13).
Is provided. Massage machine, its roller 11
6 and 120 are provided so as to be respectively brought into rolling contact with the pair of left and right rails C and to be linearly or non-linearly moved in the longitudinal direction according to the shape of the back support portion. In addition, a rack D (see FIG.
0, see FIG. 13), and the pinion gears 114 and 115 are separately meshed with these.

The self-propelled mechanism 117 includes the third motor 10 thereof.
The entire massage machine is moved by the operation of 2. That is, when the third motor 102 is operated, the rotation shaft 102
The rotation of a is transmitted to the rotating shaft 105 through the drive gear 107 and the reduction gear 104, and then further reduced through the engagement between the worm 103 and the worm wheel gear 109, and transmitted to the wheel gear shaft 108. .

Then, the pinion gear 114 is rotated at a low speed, and at the same time, the other pinion gear 115 is synchronously rotated via the pinion shaft 110 which is spline-engaged with the wheel gear shaft 108. Therefore, the engagement between the pinion gears 114 and 115 and the rack D gives a moving force to the entire massage machine, and the massage machine is moved by rolling its rollers 116 and 120 on the rails C.

Therefore, the rotating shaft 1 of the third motor 102
When 02a is rotated in the normal direction, for example, the entire massage machine is raised along the back rest, and when it is reversed, the entire massage machine is lowered along the back rest. By providing the roller support shaft 119 and the roller 120, it is possible to prevent the massage machine from swinging around the pinion shaft 110 and smoothly move the massage machine.

As shown in FIGS. 5 and 9, the front wall of the housing 32 has parallel grooves 131 and 132 extending in the left-right direction (width direction of the housing 32). One of the grooves 131 has a protective pipe 113.
A half-circumferential portion of the central portion of the roller supporting shaft 119 is fitted in the other groove 132. A cover plate 133 made of sheet metal is screwed to the front wall of the housing 32.

The cover plate 133 covers most of the portion of the protective pipe 113 and the roller support shaft 119 located between the side plates 22 and 23. The cover plate 133 has a pair of shaft fitting portions 13 extending over the entire width thereof.
4, 135 are integrally formed. These shaft fitting parts 1
34 and 135 are semi-circular in cross section, and one shaft fitting portion 1
Numeral 34 covers a half-circumferential portion in the central portion of the protection pipe 113 and is fitted therein, and the other shaft fitting portion 1
The roller support shaft 119 is fitted over the roller support shaft 119 so as to cover a half circumferential portion of the roller support shaft 119.

Incidentally, reference numeral 141 in FIGS. 1 to 4 is a terminal box attached to the outer surface of the machine frame 21, respectively, and 142 in FIG.
Is a machine frame cover screwed to the side plates 22 and 23 and the housing 32. Further, as described above, this massage machine is provided by being incorporated in the backrest portion of the chair, and the front surface (front surface) thereof including the pair of massage rollers 69 has a flexible skin not shown of the backrest portion of the chair. Covered with.

In the massage machine having the above-mentioned structure, the first motor 33 for operating the massaging massage shaft 52 and the hitting massage shaft 55, the second motor 84 for operating the roller gap adjusting mechanism 95, and the third motor for moving the entire massage machine. A motor 102 is provided. Then, as described above, when the first motor 33 is normally rotated, the drive unit 31
Then, the hitting massage shaft 55 is rotated, and the pair of massage rollers 69 are given a hitting motion. On the contrary, when the first motor 33 is rotated in the reverse direction, the kneading massage shaft 52 can be rotated by the drive unit 31, and the pair of massage rollers 69 can be given an operation of kneading.

Further, as described above, when the second motor 84 is normally rotated, the pair of hubs 67 supporting the pair of massage rollers 69 are brought closer to each other by the rotation of the width adjusting screw shaft 83, and the pair of massage rollers is moved. The mutual distance A between the pair of massage rollers 69 can be widened by rotating the width adjusting screw shaft 83 when the second motor 84 is rotated in the reverse direction.

Moreover, as described above, when the third motor 102 is rotated in the normal direction, the entire massage machine can be raised along the shape of the back support, and vice versa.
When the motor 102 is reversed, the entire massage machine can be lowered along the shape of the back rest.

Since each of the motors 33, 84 and 102 can be independently controlled, a pair of massage rollers 69 are appropriately arranged on the size of the user's body or a portion to be massaged to perform a massage or a hit massage. In addition to the selection, the position of the pair of massage rollers 69 in the width direction or the position of the pair of massage rollers 69 in the vertical direction can be changed while the selected massage operation is performed.

At the time of the hitting massage, the control unit 156
Control keeps the electromagnetic brake 57 energized,
The brake shaft 57a is fixed so as not to rotate, and the free rotation of the massaging system transmission gear 45 is stopped via the brake gear 58. As a result, the kneading transmission system is held so as not to move, and the kneading massage shaft 52 is fixed so as not to rotate.

By such a braking action, the pair of massage rollers 69 are kneaded with the movement of the kneading transmission system, despite the fact that the weight of the user acts so as to open the mutual interval A between them. It is possible to prevent the massage shaft 52 from being rotated carelessly. Therefore, the mutual distance A between the pair of massage rollers 69 does not unintentionally widen, and the pair of massage rollers 69 arbitrarily set by the user by the roller distance adjusting mechanism 95, for example, corresponding to the position of the back pot. A mutual massage A can be maintained and a tapping massage can be performed.

During the rubbing massage, since the rubbing massage shaft 52 receives rotational power, the mutual distance A between the pair of massage rollers 69 is kept regardless of the weight of the user applied to the pair of massage rollers 69. It does not spread on its own.

Then, as described above, the third motor 10
In the case of driving 2 to move the entire massager up and down along the backrest of the chair, the fan 151 is rotated simultaneously with the operation of the third motor 102. The third motor 102 can be air-cooled. Therefore, when the elevating operation of the entire massage machine is repeatedly performed, it is possible to prevent the temperature of the third motor 102 from rising excessively.

Further, the rotation of the fan 151 causes the through hole 153 provided therein to be eccentrically rotated with respect to the rotating shaft 102a, and the through hole 153 is detected by the sensor 154 in a non-contact manner every time the fan 151 makes one rotation. It The detection output of the through hole 153 by the sensor 154 is input to the control unit 156. Therefore, the control unit 156 counts the number of detection outputs input to the control unit 156 and is moved up and down by the third motor 102. You can know the entire movement position. In this position detection, the fan 151 having the through hole 153 has the rotating shaft 1 of the third motor 102 as described above.
Since it is directly connected to 02a, it is possible to accurately detect the through hole 153 by the sensor 154.

Since the position of the massage machine can be detected in this way, the massage machine can be installed in a state in which the massage machine is arranged in advance in conformity with the sitting height of the user without providing a limit switch for detecting the lifting limit of the massage machine. It is possible to operate in a program operation mode including a lifting operation.

Further, in the above-mentioned position detecting configuration,
The fan 151 also serves as a rotary encoder plate, and the number of parts of the massage machine can be reduced. Therefore, the structure can be simplified, and in combination with the reduction of the component cost required for the rotary encoder plate, the labor for assembling is not reduced, so that it can be obtained at low cost.

The present invention is not limited to the above embodiment. For example, the sensor 154 may be a transmissive sensor, and when the reflective sensor 154 is used, a mirror may be attached to the fan 151 as the detected portion 153 instead of the through hole. If the sensor 154 is of a magnetically sensitive type, a magnet piece can be attached to the fan 151 as the detected portion 153.

Further, not only the third motor 102 but also the rotating shaft of the first motor 33 and the rotating shaft of the second motor 84 are provided with air-cooling fans, and these fans are provided with detected parts. At the same time, a sensor may be arranged in the vicinity thereof for implementation. When the first motor 33 is used, it is possible to detect the number of times of kneading in the kneading massage operation (detection target) and the number of times of hitting in the kneading massage operation (detection target). In the case where the treatment is performed on the other hand, the movement position (detection target) in the lateral movement (width direction of the back support portion) of the pair of treatment elements (massage rollers 69) can be detected. Therefore, when such a configuration is provided, for example, it is possible to specify the number of hits and the number of kneadings in the program operation mode in the remote controller, and thus it is possible to perform fine automatic operation according to the preference of the user.

[0078]

As described above in detail, in the massage machine of the present invention, since the detection output for the detection target is obtained by using the fan and the sensor which are directly connected to the rotary shaft of the motor and also serve as the rotary encoder plate, Since it is possible to accurately detect the detection target such as the moving position, the encoder plate is also used as a fan for cooling the motor,
The number of parts and the labor for assembling can be reduced, the structure can be simplified, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing the overall configuration of a massage machine according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the configuration of the entire massage machine according to the same embodiment as seen from the front side.

FIG. 3 is a perspective view showing the configuration of the entire massage machine according to the same embodiment as viewed from the back side.

FIG. 4 is a rear view showing the configuration of the entire massage machine according to the same embodiment.

FIG. 5 is a front view showing a partial cross-section of the configuration of the entire massage machine according to the same embodiment.

FIG. 6 is a plan view showing the configuration of the entire massage machine according to the same embodiment.

FIG. 7 is a sectional view showing the configuration of a kneading massage system of the massage machine according to the same embodiment.

FIG. 8 is a sectional view showing the configuration of a hitting massage system of the massage machine according to the same embodiment.

FIG. 9 is a cross-sectional view showing the configuration of the massage machine according to the same embodiment, taken along line ZZ in FIG.

FIG. 10 is a cross-sectional view showing the configuration of a roller gap adjusting mechanism of the massage machine according to the same embodiment.

FIG. 11 is a plan view showing a partial cross section of the structure of a drive unit of the roller gap adjusting mechanism according to the same embodiment.

FIG. 12 is a front view showing the configuration of a drive unit of the roller gap adjustment mechanism according to the same embodiment.

FIG. 13 is a sectional view showing a configuration of a self-propelled mechanism of the massage machine according to the same embodiment.

FIG. 14 is a plan view showing a partial cross-section of a configuration around a third motor according to the same embodiment.

FIG. 15 is a front view showing the configuration of a fan according to the same embodiment.

FIG. 16 is a rear view showing the configuration of a fan according to the same embodiment.

[Explanation of symbols]

102 ... 3rd motor, 102a ... Rotating shaft, 102b ... Motor frame, 151 ... Fan, 153 ... Through hole (detected part), 154 ... Sensor.

Claims (1)

[Claims] 1. A drive motor comprising at least one drive motor, and at least one drive motor of the motors,
A rotary shaft is penetrated through the motor frame in the axial direction, and both ends of the rotary shaft are used as output end parts, and a fan is attached to one of the both output end parts. A massaging machine, characterized in that a detected part located outside of the fan is provided, and a sensor for detecting the detected part in a non-contact manner is arranged in the vicinity of the fan.