JPS5839539B2 - Massage ball drive device in electric massage machine - Google Patents

Description

[Detailed Description of the Invention] The present invention involves rotating one main shaft in the forward and reverse directions.
This relates to a drive device for massaging balls in a pine surge machine that can selectively perform two types of motions: rocking motion and tapping motion.

Most of the massaging balls used in chair-type electric pine surge machines are of the type that repeats a simple rocking motion in the left and right directions. It appears to provide a tapping motion in the vertical direction.

However, since the kneading ball E transmits these two types of motion, an economical disadvantage arises in that the internal structure becomes complicated and the manufacturing cost increases significantly.

The present invention provides a driving device for a kneading ball that can transmit two types of motions, a rocking motion and a tapping motion, using an extremely simple mechanism 1.

The following is a drawing showing an embodiment (to explain in detail, 1 is a massaging ball protruding from the backrest of the main body of the pine surge machine, 2 is a drive motor for the massaging ball, and 3 is a frame of the drive device, which rotates the motor 2. The shaft 41 is connected and the frame 3
A one-way clutch wheel 8.9 is equipped with a clutch mechanism for transmitting power from the main shaft 5 passing through the center of the massaging ball 1 to the swinging drive shaft 6 of the massaging ball 1 and the vertical motion driving shaft 7 of the massaging ball 1 in one direction only. When the main shaft 5 rotates forward, one lug wheel 8 is in the on state and the other clutch wheel 9 is in the off (free rotation) state, and the drive shaft 6 side swings. When the main shaft 5 rotates in the reverse direction, the transmission is reversed to the above (one clutch wheel 8 is in the OFF state, and the other one clutch wheel 9 is in the ON state), and the vertical drive shaft 7 is transmitted. The forward and reverse control operation of the motor 2 is performed so that only the side of the ball can be transmitted, and the two types of movements, the rocking movement and the tapping movement, of the motor 2 are selectively performed.

More specifically, as the main parts are shown in FIG. The base of the kneading ball 1 on the support arm 10 side is engaged with the tip l.

That is, the tip end 1 of the swing drive shaft 6 is provided with a short shaft 13 having an axis 12 inclined with respect to the axis 11 of the shaft 6, and the short shaft 13 is supported by a swingable block 14t, which is a bearing. 151 and when the swing drive shaft 6 is rotated, the short shaft 13 swings, and the block 14 swings.
The end portion of the support arm 10 of the kneading ball 1 connected to the kneading ball 1 is swung, and the support arm 10 is swung in the direction of arrow a.

The tip end E of the vertical drive shaft 7 is provided with an eccentric shaft 19 having an axis 18 eccentric with respect to the axis 17 of the shaft 7, and the eccentric shaft 19 is fitted into a swivel bearing 16, When rotation is applied to the drive shaft 7, the eccentric shaft 19 turns, and the turning causes the movement of the universal joint 20 connecting the block 14 and the housing 26 into which the universal bearing 16 is fitted.
1. Therefore, the pivoting motion of the eccentric shaft 19 is expanded to the support arm using the short shaft 13 as a fulcrum, and the vertical motion is transmitted to the support arm.

Next, the transmission means 1 from the main shaft 5 to the above-mentioned swing drive shaft 6 and vertical drive shaft 7 will be explained. The first one-way clutch wheel 8 meshes with the helical gear 21 of No. 5.
The worm 23 of the intermediate shaft 22 (thus, the worm wheel 24 fixed to the swing drive shaft 6 is rotated, and when the clutch wheel 8 is rotated one turn in the on direction, the swing t so that the dynamic drive shaft 6 is driven.
It's happening.

The vertical drive shaft 7 rotates as shown in FIGS. 1 and 3. When the main shaft 5 is rotated in the opposite direction, the helical gear 21 (thus, the second one-way clutch wheel 9 is rotated,
The one clutch wheel 9 is rotated in the opposite direction, and the rotational force is transmitted to the vertical drive shaft 7E.
It's happening.

That is, while the first one-way latch wheel 8 is rotating in the on direction (power transmission direction), the second one-way latch wheel 9 is in the off direction (free rotation direction), and the rotation of the main shaft 5 is in the opposite direction E. When this is switched, the first one-way clutch 8
is in the off direction and the second one-way clutch wheel 9 is in the on direction.

25 in the figure is a clutch member of the one clutch wheels 8 and 9.

In this way, the present invention transmits power from one main shaft 5 to the swing drive shaft 6 and the vertical drive shaft 7 of the massaging ball 1 via clutch wheels 8 and 9, respectively, and when the main shaft 5 rotates forward, one When one clutch wheel 8 or 9 is turned on and the main shaft 5 is rotated in the reverse direction, the other clutch wheel 9 or 8 is turned on and the main shaft 5 is rotated in the opposite direction.
By switching the rotational direction of the motor 2, either the swing drive shaft 6 or the vertical drive shaft 7 is driven. Then, when motor 2 is rotated in reverse by switch operation E,
If the direction of rotation of the gear wheels 8 and 9 is determined so that the vertical drive shaft 7 is transmitted, one motor 2
By controlling the forward and reverse rotations, it is possible to selectively impart an oscillating kneading motion and a vertical beating motion to the massaging ball 1.

In addition, since the transmission mechanism for the two types of motion is simplified, it is possible to produce useful effects in practice, such as reducing manufacturing costs and making the mechanism more compact.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partially sectional plan view showing the main parts, FIG. 2 is a partially sectional front view showing the transmission path of the swing drive shaft, and FIG. The figure is a partially sectional side view showing the transmission path of the vertical drive shaft, Figure 4 is a side view showing the transmission part of the kneading ball, and Figure 5 is a partially omitted side view in the direction of arrow A in Figure 4. FIG. 6 is an explanatory diagram illustrating the drive path. 1... Massage ball, 2... Motor, 3.
...Frame, 4...Motor shaft, 5.
... Main shaft, 6 ... Swing drive shaft, 7 ...
...Vertical drive shaft, 8, 9... One clutch wheel.

Claims (1)

[Claims] 1 A helical gear 21 is fixed to the main shaft 5, and an intermediate shaft 22 equipped with a clutch wheel 8 meshes with the helical gear 21.A worm 23 is fixed to the worm 23 and the swing drive shaft 6. At the same time, when the main shaft 5 rotates forward, the one-way clutch wheel 9, which is fixed to the vertical drive shaft 7E, is engaged with the helical gear 21. 9
(When the main shaft 5 rotates in reverse, the other clutch wheel 9 or 8 is turned on.)
The configuration is such that either the swing drive shaft 6 or the vertical drive shaft 7 is driven by switching the rotational direction of the main shaft 5, and the axis of the swing drive shaft 6 is set at both ends of the swing drive shaft 6. 11; 13 (Attach the flock 14 via the bearing 15, fix the end of the support arm 10 of the massaging ball 1, and then attach the eccentric shaft 19 (the free bearing 16)
A driving device for a massaging ball in an electric massager (a device for driving massaging balls in an electric massager) characterized in that the housing 26 is attached through the housing 26 and the housing 26 and the block 14 are connected by a universal joint 20 (thus).