JP2635090B2 - Massage machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Object of the present invention (Industrial application field) The present invention relates to a massager in which a massage device reciprocates via a screw shaft, and in particular, a clutch via a solenoid. , The reciprocating motion and the massage operation can be switched, and can be operated by a single motor.

(Prior art) Conventionally, in this type of massage machine, when performing a reciprocating motion including a rolling action and a massaging action in a stopped state, for example, the screw shaft and the sub-shaft are rotationally driven by separate motors, and the above two functions are performed. (For example, Jiko 55
-51454).

As a motor operated by a single motor, for example, as shown in Japanese Patent Publication No. 41227/1986, a screw shaft and a sub shaft are rotatable, and a clutch is provided at an end thereof to rotate the motor. Force can be transmitted selectively 2
As shown in JP-A-58-121948, a screw shaft is fixed, and a nut screwed to the screw shaft is rotated by a motor to perform reciprocating motion and massage through a clutch. A device that also drives a device has been proposed.

(Problems to be solved by the present invention) Driving the screw shaft and the counter shaft with two motors is extremely disadvantageous in terms of cost, weight, and the like, and the driving force of the motor is connected to the two rotating shafts via a clutch. Is selectively transmitted, the structure of the clutch portion, the transmission portion, etc. becomes complicated, which is likely to cause a failure or the like.Furthermore, in a method in which a screw shaft is fixed and a nut screwed to the screw shaft is rotated by a motor, However, since the motor section also moves at the same time, the burden on the nut section is large, and there are many problems to be solved such as the motor operating noise being heard.

Furthermore, the massage effect obtained by these is mainly based on "fir" by a roller, and does not provide the shiatsu effect of acupressure on the affected part in the horizontal direction.

(B) Configuration of the Present Invention (Means for Solving the Problems) The present invention relates to a massage machine in which a massage device reciprocates via a screw shaft. The cross section of the drive shaft 3 is a spline, polygon, or other deformed shaft, which is rotatably supported between the upper frame 4 and the lower frame 5 and a screw shaft 7 is parallel to the drive shaft. A drive gear 15 and a drive worm 19 loosely fitted to the drive shaft 3 are rotatably mounted on the movable frame 9 of the massage device portion which is fixed and penetrates the drive shaft 3 and the screw shaft 7 therethrough. An eccentric shaft for screwing the attached female screw 16 to the screw shaft 7, meshing the female screw gear 18 provided on the outer periphery of the female screw with the drive gear 15, and moving the drive worm 19 back and forth through the link 22 to the acupressure ball 23.
While meshing with the drive worm gear 20 which cooperates with 20,
A clutch 10 which is slidable in the axial direction and co-rotates with the drive shaft is externally fitted between the drive gear 15 of the drive shaft 3 and the drive worm 19, and provided on both ends of the clutch 10 at the opposing surfaces of the drive gear 15 and the drive worm 19, respectively. Engaging piece 10 mutually fitted with engaging pieces 15 ', 19'
b and 10b are provided, and the clutch is configured to be able to move up and down via a solenoid 14 so that the fitting with the drive gear 15 or the drive worm 19 can be selected to solve the above-mentioned problem. .

(Operation) The operation of the massage machine according to the above configuration will be described. The motor 1 is operated, and the driving shaft 3 is driven via the belt 2.
Is rotated forward or backward, the clutch 10 externally fitted to the drive shaft 3 rotates together. At this time, when the solenoid is operated, the clutch 10 slides upward or downward on the drive shaft 3 while rotating together with the drive shaft 3, and the engagement piece 10 b at the end is engaged with the drive gear 15 or the drive worm 19. The sliding contact with the pieces 15 ', 19', and fitting with each other at a predetermined position, the driving gear 15 or the driving worm
19 rotates.

When the solenoid 14 is operated to move the clutch 10 downward and engage with the drive gear 15, the female screw 16 is rotated via the meshing female screw gear 18, and the entire massage device section is screwed with the female screw. It moves upward or downward along the axis 7.

When the massage device reaches the upper end or the lower end, this is detected by an appropriate means such as a limit switch, and the motor 1 is reversed. At this time, the drive shaft 3 rotates in the reverse direction, the female screw 16 rotates in the reverse direction, and the whole massage device moves in the reverse direction. By this repetition, the massage device reciprocates.

When the clutch 10 is moved upward by the operation of the solenoid 14 and fitted to the drive worm 19, the drive worm rotates, and the coaxial eccentric shaft 21 rotates through the drive worm gear 20 meshing with the drive worm, and the The acupressure ball 23 moves back and forth along the guide 9 'to perform acupressure massage.

Therefore, by moving the clutch up and down by the solenoid, it is possible to switch between the reciprocating motion of the massage device and the acupressure massage operation.

(Embodiment) The configuration of the present invention will be described in more detail based on an embodiment shown in the drawings. In the drawings, reference numeral 1 denotes a motor that can be rotated in a normal or reverse direction by a control device (not shown); This is a belt that transmits force to the drive shaft 3.

The drive shaft 3 is rotatably supported between an upper frame 4 and a lower frame 5 via a bearing 6. The drive shaft 3 has a cross-sectional shape which is a modified shaft such as a spline or a polygon. They can rotate together.

Reference numeral 7 denotes a screw shaft fixed by bolts 8 between the upper frame 4 and the lower frame 5 in parallel with the drive shaft 3.

The drive shaft 3 and the screw shaft 7 pass through the moving frame 9 of the massage device. In the moving frame, a clutch 10 which is slidable in the axial direction and co-rotates with the drive shaft 3 is externally fitted to the drive shaft 3, and a guide groove 10 a provided in a central portion of the peripheral surface of the clutch is fitted with a clutch support piece (2nd)
See figure). At both ends of the clutch 10, engagement pieces 10b, 10b are provided so as to protrude in the axial direction.

A link 13 that swings about a fulcrum 12
Can be moved up and down by the solenoid 14 through the. The means for enabling the clutch to move up and down is not limited to this. For example, as shown in FIGS. 4 and 5, a bearing 11a is interposed in the guide groove instead of the clutch support piece, and the entire circumference is When the clutch 10 is held, the rotation of the clutch 10 becomes smoother. Further, as shown in FIG. 6, a moving rod 14b is provided on a plunger 14a of a solenoid, and this is engaged with the guide groove 10a to move the clutch 10 up and down. It is also possible to move.

A drive gear 15 is rotatably mounted on the lower inner wall of the moving frame 9 and is loosely fitted to the drive shaft 3.
Engagement piece 1 that is mutually fitted with engagement piece 10b of the opposed clutch
5 'is provided. When the engagement pieces are fitted together, the drive shaft 3
Is transmitted to the drive gear 15.

Reference numeral 16 denotes a female screw screwed to the screw shaft 7, which is rotatably attached to the moving frame 9 via a bearing 17. A female screw gear 18 is provided around the lower end of the female screw 16, meshes with the drive gear 15, rotates the female screw 16, and moves the moving frame of the massage device according to the screw shaft 7 with which the female screw is screwed. 9
The whole is moved up and down. At this time, if a massage roller is attached to the massage device, for example, rolling massage can be performed over the entire back of the human body.

Reference numeral 19 denotes a drive worm, which is rotatably attached to the upper inner wall of the moving frame 9 and is loosely fitted to the drive shaft 3.
On the lower surface thereof, there is provided an engagement piece 19 'which is fitted to the engagement piece 10b of the opposed clutch.

In FIG. 3, reference numeral 20 denotes a drive worm gear that meshes with the drive worm 19, cooperates with the coaxial eccentric shaft 21, and has the acupressure ball 23 protruding from the side wall of the moving frame via a link 22 connected to the eccentric shaft. It is slid back and forth within the guide 9 'to obtain a shiatsu massage effect.

(C) Effect Since the massage machine of the present invention has the above configuration, the clutch can be moved up or down by the solenoid to switch between up and down movement of the massage device and acupressure massage, and are driven by a single motor. It is possible to provide an extremely inexpensive and lightweight massage machine in combination with the small number of constituent members.

Further, by switching the switch, the massage device is stopped at a desired position, and by the back and forth movement of the acupressure ball, a strong acupressure effect different from the conventional "fir" effect can be obtained.

Furthermore, since the motor is fixed to the lower portion of the frame, various operational effects can be expected, for example, the operation sound is hardly heard.

[Brief description of the drawings]

FIG. 1 is a front cross-sectional view partially showing one embodiment of the present invention, FIG. 2 is a partial cross-sectional view showing an example of clutch support, and FIG. 4 and 5 are side views showing another embodiment of the clutch part with a part cut away, and FIG. 6 is a side view showing another embodiment of the clutch part. 3 ... drive shaft, 16 ... female screw 7 ... screw shaft, 19 ... drive worm 10 ... clutch, 20 ... drive worm gear 11 ... clutch support piece, 21 ... eccentric shaft 14 ... solenoid, 23 …… Shiatsu ball 15 …… Drive gear

Claims (1)

(57) [Claims] 1. A massaging machine in which a massage device reciprocates via a screw shaft, wherein a driving shaft comprising a deformed shaft such as a spline is axially supported between the upper and lower frames, and the screw shaft is parallel to the shaft. Is fixed to the moving frame of the massage device, and is rotatably mounted on the moving frame by the drive gear loosely fitted to the driving shaft. Attached to the moving frame rotatably, the acupressure ball can be moved back and forth via a drive worm gear meshing with the drive worm loosely fitted to the drive shaft, and a clutch externally fitted between the drive gear of the drive shaft and the drive worm. A massage machine characterized in that it can be moved up and down via a solenoid to select a fitting with a drive gear or a drive worm.