JPS5922528B2 - Pine surge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, an operating gear 3 is mounted eccentrically on an operating shaft 2 that operates a massaging section 1, and a driving gear 5, which is eccentrically mounted on a drive shaft 4 that is rotationally driven, is attached to the operating gear 3. The purpose is to provide a pine surge device which can perform comfortable pine surge by slowly massaging and quickly releasing the mass.

In general, in pine surgery, such as acupressure, massaging, etc., the way to apply force to the affected area is to take the time on the horizontal axis and the magnitude of the force on the vertical axis, as shown in Figure 10. It has been found that it is best to hold the kneading position and then quickly release the pressure (repeat the pattern).

However, in conventional pine surge devices, for example, the shaft body is mounted eccentrically or eccentrically and obliquely on the operating shaft, and the annular massaging section is loosely fitted to this, and the massaging section performs acupressure, massaging, etc. of the body. In the type and other pine surge devices, the operating shaft rotates at a constant speed, so the kneading operation is as shown in Figure 11, where F=R(1+sin ωt) where the kneading force is F. R is a constant, ω is an angular velocity (constant), and t is time.] It is a sine curve shape, and only the kneading and peeling speeds are the same, and the kneading action is unsatisfactory.

The present invention aims to eliminate such conventional drawbacks, and will be described in detail below with reference to the accompanying drawings.

It can be applied to either a stationary type that is built into a chair or a portable type that is attached to a chair or placed on the floor, and Figure 1 shows an example of the latter portable type. A pair of eccentric tilting shafts 6, 6 are disposed on the rotatably supported operating shaft 2 so as to be able to maintain a fixed position or adjust the distance between them. The annular massaging parts 1, 1 are loosely fitted.

8 is a bearing.

1 The drive shaft 4 is connected to the operating shaft 2 by a separate bearing 9 as shown in Fig. 2.
The driving gear 5 mounted on the driving shaft 4 meshes with the operating gear 3 mounted on the operating shaft 2.

A worm wheel 10 is attached to the drive shaft 4, and as shown in FIG. 1, the worm wheel 10 meshes with a worm 13 which is rotationally driven by a motor 12 via a belt 11.

Here, both the operating gear 3 and the driving gear 5 have the same shape as shown in FIG. 3, and are disposed so as to mesh with each other.

The operating shaft 2 and the driving shaft 4 are respectively connected to an operating gear 3 and a driving gear 5.
As shown in Figure 3a, both are shifted from the center by the same dimension e, and the maximum displacement point A of the massaging section 1 with respect to the operating shaft 2 coincides with the point B where the gear ratio (ω3/ω5) is minimum. or at some angle α than point B, for example 2 in α
Delay it by about 0 degrees.

Here, ω3 is the angular velocity of the operating gear 30, and ω is the angular velocity of the driving gear 5.

According to the present invention, when the motor 12 is rotated, the belt 1
1, the worm 13 rotates, and the rotation of the worm wheel 10 that meshes with the worm wheel 10 rotates the drive shaft 4.

Of course, the drive shaft 4 may be rotated at a reduced speed by means other than the belt.

Furthermore, the operating shaft 2 rotates due to the engagement between the driving gear 5 and the operating gear 3, and the massaging section 1°1 massages the shoulder, lower back, and other affected areas of the body as appropriate according to the eccentric oblique component of the eccentric inclined shaft 6. Pine surgery combined with acupressure can be applied.

Here, if a block that is only eccentric or only tilted is used in place of the eccentric tilting shaft 6, pine massage can be performed using only finger pressure or massaging.

In this case, in the conventional pine surge device in which the operating gear 3 and the driving gear 5 are not eccentric, the operating shaft rotates at a constant speed, so the magnitude of the kneading force by the kneading section 1 follows a sine curve as shown by the broken line in Fig. 4. Become.

However, in the present invention, if the displacement angles of the operating gear 3 and the drive gear 5 from the state shown in FIG. It is approximated by a cosine curve as follows.

Considering that the massaging force is proportional to the displacement in the vertical direction, including the eccentricity of the massaging section 1, the relationship between the massaging force and time is shown in Figure 4 when point A is delayed slightly from point B as described above. As shown by the solid line, kneading is done gradually, the duration of kneading becomes long (and the kneading is done quickly by loosening the force).

In this case, as shown in Figure 3, the driving gear 5 and the operating gear 3
If one or more intermediate gears 3', which are further eccentric by the dimension e, are interposed between them, the speed conversion of the operating gear 3 becomes large, and the curve in FIG. 4 becomes flat.

Although the above-mentioned FIGS. 1 to 3 show an example in which the massaging section 1 is rotatably mounted on the eccentric inclined shaft 6, it is also possible to operate the massaging section 1 by rotating the operating shaft 2. Applicable to any type of pine surge mechanism.

For example, FIG. 6a shows a slider in which a slider 14 is provided eccentrically on the operating shaft 2, and the slider 14 is loosely connected to a swinging arm 15 which is pivotally supported at one point to cause the swinging arm 15 to reciprocate. It is a crank mechanism, and specifically, as shown in the figure, an eccentric cam 14' is provided on the operating shaft 2, and the operating gear 3 is provided with an eccentric cam 14'.
By meshing with the drive gear 5, the eccentric cam 14' is given non-uniform rotational motion, and the kneading section 1 attached to the swinging arm 15 is
An example in which the kneading is performed slowly, the kneading state is maintained for a while, and then the force is quickly released, or the swinging arm 15 is reciprocated by the slider 14 as shown in C of the same figure. loosely fit the driven arm 15' into the
Massage portions 1, 1 are provided on the swinging and driven surface arms 15 and 15', respectively.
There are examples of similar operations being performed by attaching a .

7a is a model of a lever crank in which a crank 16 attached to the operating shaft 2 and a swinging arm 15 pivoted at one point are connected by a link 17, and specifically, as shown in the figure. An example in which a pair of eccentric cams 16' mounted on the operating shaft 2 and a pair of swinging arms 15 on which the massaging section 1 is mounted are connected by links 17, respectively, as shown in Figure C, the eccentric cams 16' and The connected swinging arm 15 and the driven arm 15' are loosely connected to swing, driven surface arms 15, 15
'There are examples in which massaging parts 1, 1 are provided.

Further, FIG. 8a shows an example in which the operating shaft 2 and the driven shaft 18, which are parallel to each other, are connected by spur gears 19 and 20, and each is equipped with inclined or eccentric massage parts 1, 1. The kneading parts 1, 1 are made to perform a rotational movement.

Furthermore, in FIG. 9, one end of a swinging arm 15 is pivotally supported by a universal joint 21 such as a cross joint, and the other end of the swinging arm 15 is pivotally connected eccentrically to the outer periphery of the operating shaft 2, and is attached to the swinging arm 15. The massaging section 1 is made to perform a three-dimensional movement consisting of rotation and up-and-down reciprocating motion.

In any of these cases, the interval between the massaging portions 1, 1 is the narrowest when the gear ratio ω3/ω of the operating and driving gears 3, 5 is at its smallest, or slightly before or slightly later than that. The phase angles of the operation and first drive gears 3 and 5 may be set so that the massaging force applied to the body becomes maximum.

In the present invention, when the actuating shaft is rotated by the drive shaft to perform pine surge in the kneading section as described above, operating and driving gears are mounted eccentrically on each of the actuating shaft and the drive shaft and meshed with each other. Therefore, when the drive shaft is rotated at a constant speed, the rotation speed of the operating shaft changes periodically and rotates at an inconstant speed. By setting the point slightly later than the point at which the gear ratio of the operating shaft is minimum, it is possible to easily perform massaging slowly, maintain the massaging state a little, and quickly release the massaging. It is possible to perform an effective and pleasant pine massage similar to movements such as massaging and acupressure.

[Brief explanation of drawings]

FIG. 1 is a sectional view of one embodiment of the present invention, FIG. 2 is a partially cutaway top view of the same, and FIG. 3 a is an enlarged side view of the mechanism part of the same.
The same figure is a side view of the modified example, FIG. 4 is a characteristic diagram of the relationship between kneading force and time of the same as the above, FIG. 5 is a characteristic diagram of the speed ratio of the same as the above, and FIG. FIG. 7A is a schematic diagram of a model of another embodiment of the same example; FIG. 7C is a front view of the specific example; Figures 8a and b are a sectional view and a top view of another embodiment of the same as above, Figure 9 is a partially cutaway front view of yet another embodiment of the same as above, and Figure 10 is a kneading force characteristic of an ideal kneading operation. Fig. 11 is a kneading force characteristic diagram of a conventional kneading operation, in which 1 indicates a kneading part;
2 is an operating shaft, 3 is an operating gear, 4 is a drive shaft, and 5 is a drive gear.

Claims (1)

[Claims] 1. A pine surge device characterized in that an operating gear is mounted eccentrically on an operating shaft that operates a kneading section, and the drive gear that is eccentrically mounted on a rotationally driven drive shaft is meshed with the operating gear.