KR930003039B1 - Portable massager - Google Patents

Abstract

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Description

Portable massager

1 is a longitudinal sectional view of a portable massager according to an embodiment of the present invention.

2 is a bottom view with the fabric cover removed.

3 is a cross-sectional view taken along the line III-III of FIG.

4 is a sectional view taken along the line IV-IV of FIG.

5 is an enlarged cross-sectional view of the planetary gear device.

6 is an enlarged cross-sectional view of the connecting shaft.

* Explanation of symbols for main parts of the drawings

1: casing 2: fabric cover

3: Pressing frame 4: DC motor

5: hole 6: bushing

7: code 9: bracket

10 cover 11 cylindrical part

12: neck part 13: disc part

14 flange 15 rib

16 concave portion 17 first planetary gear device

18: second planetary gear device 19: motor shaft

20, 26: sun gear 21, 27: planetary gear

22, 28: outer gear 23, 29: carrier

24, 30: carrier shaft hole 25: connecting shaft

28: external internal gear 32: rotating spindle

33, 34: bearing 35: rotating disc

The present invention relates to a portable massager.

Conventional massagers are already commercially available.

The arm hits the back of a person sitting in the shape of a chair, and the arm opens and closes to eliminate stiffness.

This is driven by the powerful motor and reducer of the arm, resulting in a strong force.

However, this is so large that it is unsuitable for installation in a narrow house and requires a portable massager.

As a portable massager, the use of ultrasonic vibration has been used for a long time. The vibration is obtained using a suitable piezoelectric vibrator or the like, and the structure is simple and can be miniaturized and lightweight.

However, the ultrasonic vibration is sometimes monotonous and intense, so there is a lot of noise, and it is not always effective, but rather stiff shoulders may be added.

Thus, there is a need for massagers that are softer and have better action.

It is an object of the present invention to provide a portable massage device that has a gentle effect on the human body and can increase blood circulation and eliminate stiff shoulders.

Portable massage device of the present invention is installed in the casing of the cylindrical casing and the casing and the casing is enlarged in the upper and lower roads connected to the output of the first planetary gear and the first planetary gear device directly connected to the output shaft of the motor A disk connected to the output of the second planetary gear device and the second planetary gear device, and a plurality of rollers installed on the circumference of the disk and a fabric cover attached to the lower end of the casing covering the rollers, and the disk in the casing by rotating the motor. It is characterized in that the deceleration rotation to give a rotational pressure to the human body by the rotation of the roller covered by the fabric cover.

1 is a longitudinal sectional view of a portable massage device according to an embodiment of the present invention, and FIG. 2 is a bottom view showing the fabric cover peeled off.

3 and 4 are cross-sectional views taken along lines III-III and IV-IV of FIG.

The casing 1 is a cylindrical plastic container enlarged from below.

By attaching the pressing frame 3 to which the fabric cover 2 is attached, the bottom opening of the casing 1 is formed to form a closed space therein.

A direct current motor 4 is installed inside the casing 1.

The cord 7 is inserted into the casing 1 through the bushing 6 inserted into the hole 5 in the upper end of the casing.

The end of the cord 7 is attached to the end 8 of the motor 4 by soldering.

In the casing 1, the bracket 9 and the cover 10 are fixed.

The bracket 9 is a structure including a cylindrical portion 11, a neck portion 13 and a disc portion 13 that are continuous thereto.

The bracket 9 is engaged with the lid 10 in the upper flange 14.

The bracket 9 is rotationally stopped with respect to the casing 1.

For example, the inner wall of the casing 1 has ribs 15 in the axial direction, and the outer portion of the bracket 9 has recesses 16. The rotation is stopped by fitting the rib 15 and the recessed portion 16.

However, the rotation stop mechanism can be considered in various ways as well. The first planetary gear device 17 and the second planetary gear device 18 are fixed inside the casing 1.

The output shaft 19 of the DC motor 4 is fitted into the shaft hole D cut of the sun gear 20 of the first planetary gear device 17.

The first planetary gear device 17 includes a sun gear 20 and three planetary gears 21 surrounding the sun gear 20 and a carrier 23 for rotatably supporting the outer gear 22 and the planetary gear 21 surrounding them. ) Is included. The outer internal gear 22 is fixed with respect to the bracket 9. The coupling shaft 25 is fitted into the carrier shaft hole 24. The other end of the connecting shaft 25 is a sun gear 26. This is the sun gear of the second planetary gear device 18. The sun gear 26 meshes with the planetary gear 27. The planetary gear 27 is meshed with the outer gear 28. The spline head 31 of the output shaft 32 is fitted into the shaft hole 30 of the carrier 29 which supports the planetary gear 27 freely in rotation.

The output unit 32 outputs that the rotation of the motor is decelerated, but the rotation is freely supported by the bearings 33 and 34 of the bracket diameter portion 12. The lower end of the output shaft 32 is a wide rotating disk 35.

The rotating disc 35 is attached to a position where four rollers 36 are equidistant from the center, as in the second diagram.

The rotary disc 35 is provided with four ridges 37 and holes 39 fitted therebetween.

The roller 36 is rotatably supported by inserting the pin 38 into the hole of the ridge 37 and the hole of the roller 36.

The pin 38, which is the center of rotation of the roller 36, faces in the radial direction.

The roller 36 is a raceway, but when the fabric cover 2 is pressed against the human body, the roller 36 rotates simultaneously with the rotation of the rotating disc 35.

The fabric cover 2 does not rotate but the position of the roller 36 changes.

If you press this on your shoulder, arm, waist, etc., the roller will move, so the pressure will move properly.

The rotational speed of the roller can be freely changed by the DC voltage applied to the DC motor 4.

The controller and the like are installed at the tip of the cord 7 (not shown).

Since the roller 36 only rotates slowly on the human body, the action is smooth.

In addition, it is a pressing action interposed between the fabric cover (2), the fabric cover itself does not rotate because it does not hurt the skin. Rollers are plastic or rubber rollers.

Since the planetary gear devices 17 and 18 are used to decelerate the rotational force of the motor, all the members can be side by side along the central axis. This planetary gear device (17, 18) is a unique research has been done.

In addition, there is a feature in the structure of connecting the two devices (17) (18). Hereinafter, the second planetary gear device will be described in detail with reference to FIG. 5.

The sun gear 26 is not formed as a single gear but is formed as part of the connecting shaft 25. The sun gear 26 meshes with three planetary gears 27. This is freely supported for rotation with respect to the carrier 29 by the planetary shaft 41. The carrier 29 has three fixing holes 53 on the inner side thereof, and the two ends of the planetary shaft 41 are fitted thereto to fix the carrier 29.

The planetary gear 27 is composed of a planetary gear unit 42 in the center and planetary discs 43 and 43 supporting them from both sides.

The outer circumference of the planetary disc 43 is wider than the tooth source of the planetary gear unit 42.

In addition, there is an interval of 0.1 to 0.5 mm between the boss portion 54 and the planetary gear portion 42 of the planetary disc 43, and when the load applied to each planetary gear becomes uneven, the planetary gear portion 42 is changed in position and loaded. Make uniform.

Corresponding to the double structure of the planetary gear, the outer gear 28 also has a double structure.

That is, it has the outer gear part 45 in the center, and has the smooth inner circumferential surface 46 in the both ends.

The planetary disc 27 described above can rotate on the inner circumferential surface 46.

Naturally, the inner circumferential surface 46 has an inner diameter larger than the basement angle of the outer shell donor 45.

The carrier 29 combines the carrier main plate 47 and the carrier sub plate 48.

It is made of aluminum diecast or zinc, for example.

Three ridges 49 and 50 are formed inside the carrier main plate 47 and the carrier subboard 48.

The ridges 49 and 50 of the carrier main plate are formed.

The ridge 49 of the carrier main plate has a protrusion 52, and the ridge 50 of the carrier base has a hole 51.

By inserting the protrusion 52 into the hole 41, the carrier main plate 47 and the carrier sub plate 48 are integrally coupled to each other.

The carrier shaft hole 44 for outputting the carrier main plate 47 is drilled.

This has a rotating stop structure such as splines and serrations.

Outer gear has a groove 55 on the outer circumference and fits into a longitudinal groove 56 on the inner side of the bracket. As a result, the rotation stops.

Because of the above-described dual structure of the planetary gear and the external gear, the planetary gear device has the following advantages.

① Since the planetary disk 43 and the inner cylindrical surface 46 exert radial force on each other, no abnormality of tooth tooth engagement occurs.

(2) Since the planetary disc presses both sides of the outer gear part 45, the planetary gear 27 does not move axially with respect to the outer gear 28.

In addition, since the planetary disc presses both sides of the sun gear 26, the sun gear does not move axially with respect to the planetary gear.

Since the planetary gears are supported by the carriers, the sun gears and the externally extruded planets are coupled to the carriers by the planetary gears. These members are of integral units that cannot be separated. ② of these characteristics is very convenient characteristic. In a conventional planetary gear device, since there is no such thing as a disc, the external gear and the sun gear simply fall off.

However, this structure is unique to the applicant.

Special place 58-94656

EPC Patent 156067

USP 4,674,360

Registered utility model in China 7420631

USP 4,901,602

Republic of Korea Patent 30,181

And the like are known.

The new part is in the connection structure of the two planetary gear units.

Normally, two planetary gears are connected to each other by connecting shafts provided at both ends with a portion inserted into the carrier shaft hole of the first stage and a portion inserted into the shaft hole of the sun gear of the second stage.

This connection structure has the following difficulties. One is that the second stage sun gear is so small that the sun gear shaft hole inevitably becomes small and it is difficult to transmit strong torque.

Although the carrier shaft hole in the first stage is large, there is an imbalance in that the sun gear shaft hole in the second stage is small.

The same torque is applied to both sides, but the part inserted into the sun gear shaft hole is thin so that excessive torque is easily lost.

Another is that since the connecting shaft must not slide out in the axial direction, the blade portion must be formed so as not to slip in the axial direction, which complicates the shape.

The difficulty described earlier is more pronounced as the reduction ratio is increased.

If the reduction ratio is 1/3 to 1/4, the shaft hole can be enlarged because the sun gear is large.

However, in the case of the reduction ratio over 1/5, the connecting shaft is also thinned because the sun gear is significantly smaller.

In the case of the portable massager of the present invention, the rotation of the motor is 6250-10750 RPM, which is reduced by two stages to 1/5 × 1/5, and the output rotation is 250-430 RPM.

In this case, the sun gear becomes too small because the reduction ratio is 1/5. In order to overcome such a problem, the present invention uses a connecting shaft in which the portion to be inserted into the carrier shaft hole and the sun gear are integrated together with the shaft.

6 shows a front view of the connecting shaft alone.

In particular, it is important that the sun gear 26 is integrally formed on the connecting shaft 25.

Accordingly, the shaft has a shaft hole in the sun gear 26, and the diameter of the shaft is thicker than that in which the tip of the shaft is inserted, so that a large torque can be transmitted.

Another advantage is that since the sun gear 26 is integrally formed, the axial movement of the connecting shaft 25 is suppressed and the whole shown in FIG. 5 is integrated.

Since both ends of the sun gear 26 are pressed by the edges of the planetary disks 43 and 43, the sun gear 26 does not fall out and therefore the connecting shaft 25 does not fall out.

Further, it is more preferable to use the carrier fitting portion 46 and the sun gear with the same diameter and the same involute gear.

The reason is that the processing becomes easy.

This is because the tooth is cut in the longitudinal direction with respect to the cylindrical rod and then rounded off the middle portion to have the same shape as the sixth degree. Another is the point of torque. The torques applied to the left and right of the connecting shaft 25 are the same.

If the carrier fitting portion 46 and the sun gear 26 have the same tooth shape and number of teeth, the tooth pressure applied to each tooth surface is also the same.

The portable massage device of the present invention changes the pressure point applied to the human body by moving a plurality of rollers in the circumferential direction in the fabric cover. The pressure is small because it can be held in the hand and operated.

Since the roller's movement is gentle compared to the ultrasonic progress, the stimulus is not too intense.

Since the fabric cover does not rotate, the skin is not damaged by the movement of the roller.

If you touch the abdomen or thighs, you can get rid of the flesh by a proper massage effect. Putting it on your shoulders or back will relieve stiffness and back stiffness.

Since the DC motor is used as the driving source, the speed can be adjusted freely.

Claims (4)

A cylindrical casing having a diameter extending upward and downward and a lower portion thereof, a motor accommodated in the casing, a first planetary gear installed in the casing and directly connected to an output shaft of the motor, and a second connected to an output side of the first planetary gear device. And a planetary gear device, a disk connected to the output side of the second planetary gear device, a plurality of rollers installed on the circumference of the disk, and a fabric cover attached to the lower end of the casing covering the rollers. Portable massage device characterized in that to rotate the disc in the casing by applying a rotational pressure to the human body by the rotation of the roller covered by the fabric cover. The planetary gear device of claim 1, wherein the first planetary gear device and the second planetary gear device comprise a sun gear as a center, a plurality of planetary gears engaged with the outer planetary gear, an external internal gear engaged with the planetary gears, and the planetary gear. And a carrier for supporting the planetary shaft through the planetary gear, wherein the planetary gear includes a central planetary gear unit and a planetary disk unit supporting the planetary gear unit from both sides, and the diameter of the planetary disk is larger than that of the planetary gear unit tooth line. Portable massage device comprising a central outer gear portion and the inner cylindrical surface of both sides. 2. The cylindrical body of claim 1, wherein the casing has a cylindrical support, and the inner surface of the support has ribs in the longitudinal direction, and the grooves are provided on the outer side of the outer gear of the first planetary gear device and the second planetary gear device. A portable massager, wherein the groove is inserted into the rib of the support to stop rotation. 2. The carrier hole of claim 1, wherein the sun gear and shaft of the second planetary gear device and the first planetary gear device are connected to connect the carrier output of the first planetary gear device to the input of the sun gear of the second planetary gear device. Portable massager using a connecting shaft formed integrally with the part to be inserted into.