KR20110045699A - Driving apparatus for massaging device - Google Patents

Abstract

PURPOSE: A drive unit for a massage machine is provided to reduce generation of noise due to eccentric rotation. CONSTITUTION: A drive unit for a massage machine comprises: a rotary shaft(100) which is provided with power from a drive motor and rotates; a fixed body(200) supporting the rotary shaft; an eccentric bush(300) combined with the rotary shaft; an eccentricity body(400) which vibrates according to the rotation of the rotary shaft and transfers the corresponding vibration to a massage region; and a balance(500) which is combined with the rotary shaft so that an eccentric weight can be located in the opposite direction of the eccentricity body.

Description

Driving device for massaging device {Driving apparatus for massaging device}

The present invention relates to a driving device for a massager, and more particularly, to obtain a smooth massage operation with a large displacement, to reduce vibration and noise, to be implemented in a compact structure, and to have a safe and beautiful appearance. The present invention relates to a drive device for a machine.

In general, a massage device is a device used for the purpose of promoting health and physical therapy by applying physical vibration or trembling to a user's massage area to promote blood circulation and relax muscles.

Such a massage device is provided with a massage device driving device for converting the rotational motion of the drive motor to physical vibration. Conventional massager drive device is composed of a rotating shaft rotated by a drive motor, an eccentric body is fixedly installed to the center of gravity on the rotating shaft to one side, and a transmission unit for transmitting the vibration generated by the rotation of the eccentric body to the massage site. do.

In other words, the vibration generated by the eccentric body according to the rotation of the rotary shaft to the eccentric rotational movement to transfer to the massage portion through the transmission.

Such a drive device for a conventional massager generates a vibration by a fast eccentric rotational movement of the eccentric body, so the period of the vibration is very short while the displacement of the transmission part by the vibration is not large. Accordingly, there is a problem in that a short period of vibration transmitted to the massage site is irritating, and even itching is caused in the massage area when used for a long time by the irritating vibration.

This problem is that when the intensity of the vibration is increased, the speed of the eccentric rotation of the eccentric body becomes faster and the period of the vibration becomes shorter and more prominent.

In the conventional massager drive device, the eccentric body rotates rapidly, and vibrations are generated. Since the movement of the center of the eccentric body is performed quickly, the displacement due to the vibration is not large, and thus the repeated pressurization and release of the massage part is performed. Massage effect made in the form of a disadvantage is not great.

If the center of the eccentric body is greatly spaced from the center of rotation to improve the displacement caused by the vibration, the generated vibration is excessive, causing inconvenience and irritating problem, and thus the displacement caused within the appropriate vibration range is not large. .

In addition, due to the fast eccentric rotational movement of the eccentric body also generates a small noise of a constant high-pitched sound with vibration, there is also a problem causing uncomfortable to the user.

In order to solve the problems as described above, the present invention can realize a smooth and large swing motion due to the movement of the center of the eccentric body rather than the vibration generated by the rotation of the eccentric member itself, eccentric rotation that can cause discomfort Vibration or noise due to it can be minimized, the rotating member is not exposed, to provide a massage device driving apparatus that can be implemented compactly.

In order to solve the above problems, the drive device for a massage device according to the present invention, the rotary shaft is rotated by receiving power from the drive motor; A fixed body supporting the rotating shaft; An eccentric bush whose center is coupled to the rotating shaft so as to deviate from the rotating center of the rotating shaft; An eccentric body which is installed in the eccentric bush and oscillates while the center is moved in an eccentric state according to the rotation of the rotation shaft, and transmits the oscillation to the massage part; And a balance body provided at one end thereof and coupled to the rotation shaft such that the eccentric weight is positioned in a direction opposite to the eccentric direction of the eccentric body.

The eccentric body is installed in the eccentric bush through a bearing, it may be connected to the fixed body through the elastic member so as not to rotate relative to the fixed body.

The elastic member may be provided in the form of a cover covering and closing the gap between the fixed body and the eccentric body.

The driving device for the massager is provided in the form of a cover covering and closing the gap between the fixed body and the eccentric body further comprises an elastic member for connecting the fixed body and the eccentric body; The balance body, the It is installed between the fixed body and the eccentric body may be located inside the elastic member.

The balance body may be formed in a bowl shape having a concave groove, and may be provided to surround one end of the eccentric body or the fixed body with the groove.

The eccentric weight may be provided to rotate along the long groove in a state inserted into a circular long groove formed on one surface of the eccentric body or the fixed body.

According to the driving device for a massage device of the present invention, in the state in which the eccentric body is connected to the fixed body through the elastic member so that the eccentric body is not rotated with respect to the fixed body, the center is rotated by the rotation of the eccentric bushing coupled to the rotating shaft. By providing the swinging motion to perform the circular motion, it is possible to obtain a massage motion with large displacement and smooth movement such as rubbing the massage part roundly.

In addition, a balance body having an eccentric weight positioned in an opposite direction to the eccentric direction of the eccentric body is provided to offset the vibration caused by the eccentric rotation of the eccentric bushing and the swinging motion of the eccentric body. Vibration and noise due to the eccentric rotation can be reduced to ensure comfortable use.

In addition, the balance body is formed in a bowl shape having a groove portion is provided to surround one end of the eccentric body with the groove portion, the eccentric weight is provided to rotate in the state inserted into the long groove formed on one surface of the eccentric body or the fixed body, thereby, the balance body, the eccentric body And the fixed body can be positioned as close as possible to be implemented in a compact structure of a small volume.

Since the driving device for the massager is used in such a way that the user grips and contacts the massage area, such a compact structure can improve the grip and the contact convenience.

In addition, the elastic member for connecting the eccentric body so as not to rotate relative to the fixed body is provided in the form of a cover covering the gap between the eccentric body and the fixed body, the balance body is located inside the elastic member between the eccentric body and the fixed body In addition, the user's tentacle against the rotating balance can be prevented to protect the user and improve the appearance of the device.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

The driving device for a massage device according to the present invention is provided with a massage device used for the purpose of promoting health and physiotherapy by promoting blood circulation and relaxing muscles, and repeatedly presses the rotational force transmitted from the driving motor to the massage part. It is a device that converts the massage movement of the lifting.

Hereinafter, with reference to the accompanying Figures 1 to 5, the configuration and effect of the drive device for the massage device according to a preferred embodiment of the present invention will be described in detail. Driving device for a massage device according to a preferred embodiment of the present invention is the rotating shaft 100, the fixed body 200, the eccentric bush 300, the eccentric body 400, the balance body 500 and the elastic member 600 It is made to include.

The rotating shaft 100 is connected to a driving motor (not shown) by a flexible wire or the like and rotates by receiving a rotational force from the driving motor. The rotary shaft 100 is installed in the through hole 210 of the fixed body 200 through a pair of bearings BR1.

The central portion of the rotating shaft 100 is made of a cylindrical shape, one surface is provided with a flat flat surface 110. Therefore, the cross-sectional shape of the center of the rotation shaft 100 has a shape in which the outer side of the string connecting any two points on the circumference is removed from the circle.

The cross-sectional shape of the rotary shaft 100 is thus provided to allow the eccentric bush 300, the balance body 500, and the bush BS2 to be rotated together with the rotary shaft 100 without slipping.

The fixed body 200 supports the rotating shaft 100 to be rotated by a pair of bearings BR1. At this time, the center of the fixed body 200 is provided in the same as the center of rotation of the rotary shaft (100).

A through hole 210 is formed at the center of the fixed body 200, and a pair of bearings BR1 are installed in close contact with the end 211 formed at the inner circumferential surface of the through hole, and a rotation shaft is formed on the inner circumferential surface of the bearing BR1. 100 is combined.

The rotary shaft 100 is installed to protrude to one side of the through hole 210, the other side is connected to the above-described flexible wire. The pair of bearings BR1 installed in the through hole 210 are fixed not to be separated from the through hole 210 by the snap ring SR1.

The eccentric bush 300 is provided in a cylindrical shape, the center of which is coupled to the rotating shaft 100 to deviate from the center of rotation of the rotating shaft 100, thereby causing the eccentric rotational movement as the rotating shaft 100 rotates.

As shown in Figures 2 and 3, the eccentric bush 300 is formed with a fastening hole 310 to be biased from the center to one side, the fastening hole 310 is the central cross section of the above-described rotation shaft 100 and It is provided in a corresponding shape and rotates with the rotation shaft 100 without being slid by the flat surface 110.

The eccentric body 400 is installed in the eccentric bush 300 and the center of the eccentric bush 300 is rotated while the circular motion with respect to the center of rotation of the rotary shaft (100). In addition, the eccentric body 400 transmits the shaking motion to the massage part through a separate contact member (not shown) fastened to the fastening part 430. Of course, the eccentric body 400 may be provided to directly transmit the swing to the massage portion.

In this case, the contact member may be provided in various shapes so that the contact member may be selectively fastened to the fastening part 430 according to a massage part or massage type.

When the coupling relationship between the eccentric body 400 and the eccentric bush 300 is described in detail, a through hole 420 is formed in the center of the eccentric body 400, and the end hole 421 is formed in the through hole 420. The bearing BR2 is installed in the passage hole 420 so as to contact the end portion 421, and the eccentric bush 300 is fixed to the inner circumferential surface of the bearing BR2. At this time, the eccentric bush 300 is fixed to the inner circumferential surface of the bearing BR2 so that the center thereof corresponds to the center of the eccentric body 400.

The bearing BR2 installed in the through hole 420 is provided with a snap ring SR so that the bearing BR2 is not separated from the through hole 420, and the bush BS2 is fixed to fix the position of the rotation shaft 100 in the bearing BR2. The bolt 120 is provided at the end of the rotation shaft 100. The insertion hole BS-1 of the bush BS2 inserted into the rotary shaft 100 also has a shape corresponding to the cross section of the rotary shaft 100 so as not to slide with respect to the rotary shaft 100 like the above-described fastening hole 310. It may be provided.

On the other hand, the eccentric body 400 is connected to the fixed body 200 through the elastic member 600, the elastic member 600 is bonded to the outer peripheral surface of the eccentric body 400 and the outer peripheral surface of the fixed body 200, respectively Since it is bonded through the resin, etc., the eccentric body 400 is fixed so as not to rotate relative to the fixed body 200.

However, since the elastic member 600 is made of a flexible material having elasticity such as resin or rubber, the eccentric body 400 is provided to have a predetermined displacement with respect to the fixed body 200.

When the eccentric body 300 is rotated while the eccentric body 400 is connected to the fixed body 200 through the elastic member 600, due to the eccentric rotation of the eccentric bush 300, the eccentric body 400 is also the same. The center is rotated in an eccentric state with respect to the rotation center of the rotation shaft 100.

Accordingly, as shown in FIG. 5, the eccentric body 400 has a continuous displacement as a circular motion with respect to the fixed body 200. That is, the center C2 of the eccentric body 400 continuously rotates based on the rotation center C1 of the rotation shaft 100 which is the center of the fixed body 200. The fluctuation of the eccentric body 400 is similar to a massage operation that gently rubs a massage part while rounding a circle with a palm.

1 is a view showing the eccentric body 400 is eccentrically upwards, and FIG. 4 is a view showing a state in which the eccentric body 400 is eccentrically rotated by 180 ° in the state of FIG. 1. It is.

As such, the eccentric body 400 is coupled to the eccentric bush 300 through the bearing BR2 and is connected to the fixed body 200 through the elastic member 600, so that the eccentric body 400 does not rotate largely. While having a gentle massage effect can be obtained.

The balance body 500 is provided with an eccentric weight 510 at one end, so that the eccentric weight 510 is located in a direction opposite to the eccentric direction of the eccentric body 400 based on the rotation center of the rotation shaft 100. It is coupled to the rotating shaft (100).

Accordingly, the center of gravity of the eccentric bush 300, the eccentric body 400, and the balance body 500 correspond to the center of rotation of the rotation shaft 100. Therefore, generation of vibration due to eccentric rotation of the component when the rotation shaft 100 is rotated can be minimized. That is, the eccentric weight 510 of the balance body 500 serves to cancel the vibration caused by the eccentric movement of the eccentric bush 300 and the eccentric body 400.

Here, the balance body 500 has a bowl shape having a concave groove portion 520, as shown in Figure 1, the fixed body 200 to surround one end of the eccentric body 400 with the groove portion 520 And between the eccentric body (400). In addition, the eccentric weight 510 is provided to be rotated along the long groove 410 in the state inserted into the long groove 410 formed in a circular shape on the eccentric body 400.

When the balance body 500 and the eccentric weight 510 are provided in this way, a more compact implementation is possible while the space provided for the balance body 500 is minimized. The massage device driving apparatus according to the present invention is to massage the user in a gripped state, the reduction of the volume is important for ease of use.

In a preferred embodiment of the present invention, the groove portion 520 is wrapped in one end of the eccentric body 400 and the eccentric weight 510 is provided to be inserted into the long groove 410 formed in the eccentric body 400, but is not limited thereto. Without the groove 520 is wrapped around one end of the fixed body 200, the long groove in which the eccentric weight 510 is inserted may be provided in the fixed body 200.

In addition, in the preferred embodiment of the present invention, the balance body 500 is provided with an eccentric weight 510 at one end thereof, so that the center of gravity is eccentrically implemented, but not limited thereto, and the balance body 500 itself is geometrical. The center of gravity may be eccentric with respect to the center. For example, the thickness of one end portion of the balance body 500 is provided to be thick, and the other end thickness is provided to be thin, so that the center of gravity may be eccentrically toward one end side.

On the other hand, the balance body 500 is installed in the rotating shaft 100 through the fastening hole 530 formed in the center, the fastening hole 530 is the same as the fastening hole 310 of the eccentric bush 300 described above, By being provided in a shape corresponding to the cross section of the central portion of the rotary shaft 100, it can be stably rotated together with the rotary shaft 100 without sliding.

As shown in FIGS. 1 and 3, the elastic member 600 connects the eccentric body 400 and the fixed body 200 so that the eccentric body 400 does not rotate relative to the fixed body 200. It is made of a material having elasticity, such as resin or rubber, and is provided in the form of a cover covering and closing the gap between the fixed body 200 and the eccentric body 400.

Therefore, since the balance body 500 provided between the eccentric body 400 and the fixed body 200 is located inside the elastic member 600, even if the balance body 500 is rotated, the balance is balanced by the elastic member 600. Since the user's tentacles for the sieve 500 are blocked, safe use is possible.

In addition, the elastic member 600 also blocks the field of view of the gap between the fixed body 200 and the eccentric body 400, it also serves to improve the appearance of the device by concealing the complex mechanical structure of the gap therebetween.

1, 4 and 5, the operation and use state of the massage device driving apparatus according to an embodiment of the present invention will be described in detail.

First, when the rotating shaft 100 is rotated by a drive motor connected by a flexible wire or the like, it is stably rotated in a state of being installed and supported by the fixed body 200 by a pair of bearings BR1.

At this time, the eccentric bush 300 and the balance body 500 are coupled with the rotary shaft 100 so as not to slide about the rotary shaft 100, the eccentric body 400 is fixed through the elastic member 600 ( It is connected to the 200 is not rotated with the eccentric bush 300, only the eccentric bush 300 is rotated in a state supported by the bearing (BR2).

Then, the center of the eccentric body 400 is provided to correspond to the center of the eccentric bush 300, as shown in Figure 5, the center of the eccentric body 400 in accordance with the eccentric rotation of the eccentric bush 300 (C2 ) Is also rotated based on the rotation center (C1) of the rotation axis (100). Due to this rotational movement, the displacement of the eccentric body 400 is continuously changed, and the eccentric body 400 swings as if rubbing the massage part with a palm.

The fluctuation of the eccentric body 400 is transmitted to the massage portion by a separate contact member fastened to the fastening portion 430.

On the other hand, the balance body 500 is rotated together with the rotation shaft 100, the eccentric bush 510 is rotated in a state opposite to the eccentric direction of the eccentric bush 300 and the eccentric body 400, the eccentric bush ( The vibration generated by the eccentric rotational movement of the 300 and the eccentric body 400 is offset. As the vibration is canceled, the noise caused by the vibration is also reduced.

As described above, the driving device for the massage device according to the present invention, in the state in which the eccentric body 400 is connected to the fixed body 200 through the elastic member 600 so as not to rotate relative to the fixed body 200, the rotating shaft ( By the rotation of the eccentric bush (300) coupled to the center is provided to perform a rocking motion of the center of the circular motion about the rotation center of the rotary shaft 100, to obtain a large displacement and smooth massage motion such as rubbing the massage area roundly In addition, the eccentric rotation of the eccentric bush 300 and the eccentric direction of the eccentric body 400 relative to the center of rotation of the rotation shaft 100 to offset the vibration caused by the oscillation movement of the eccentric body 400 in the opposite direction By being provided with a balance body 500 having an eccentric weight 510 located in, vibration and noise due to eccentric rotation that can cause discomfort to the user can be reduced.

Although the present invention has been described in detail only with respect to the embodiments described, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and the modifications and modifications belong to the appended claims. It is natural.

1 is a cross-sectional view of a driving device for a massage device according to a preferred embodiment of the present invention,

2 is a cross-sectional view showing a state in which each component is separated and the elastic cover is removed in the driving device for the massager according to the preferred embodiment of the present invention;

3 is an exploded perspective view of a driving device for a massage device according to a preferred embodiment of the present invention;

4 is a cross-sectional view showing a state in which the rotating shaft is rotated 180 ° compared to Figure 2 in the driving device for a massage device according to a preferred embodiment of the present invention,

5 is a view showing a path in which the center of the eccentric body swings with respect to the center of the rotating shaft in a state in which the elastic member is removed in the driving device for a massage device according to the preferred embodiment of the present invention.

＊ Explanation of symbols for main part of drawing ＊

100: rotation axis 110: flat surface

120: nut 200: fixed body

210: through hole 211: end

300: eccentric bush 310: fastening hole

400: eccentric body 410: long groove

420: through hole 421: end

430: fastening portion 500: balance

510: eccentric weight 520: groove

530: fastening hole 600: elastic member

C1: center of rotation of the rotating shaft (center of the fixed body)

C2: center of eccentric body

BR1, BR2: Bearing SR1, SR2: Snap Ring

BS1, BS2: Bush BS-1: Insertion Hole

Claims (6)

A rotating shaft that receives power from the drive motor and rotates; A fixed body supporting the rotating shaft; An eccentric bush whose center is coupled to the rotating shaft so as to deviate from the rotating center of the rotating shaft; An eccentric body which is installed in the eccentric bush and oscillates while the center is moved in an eccentric state according to the rotation of the rotation shaft, and transmits the oscillation to the massage part; And A balance body having an eccentric portion at one end thereof and coupled to the rotating shaft such that the eccentric portion is positioned in a direction opposite to the eccentric direction of the eccentric body; Driving device for a massage device comprising a. The method of claim 1, The eccentric body, It is installed in the eccentric bush through a bearing, the driving device for a massage device, characterized in that connected to the fixed body through the elastic member so as not to rotate relative to the fixed body. The method of claim 2, The elastic member, Driving device for a massage device, characterized in that provided in the form of a cover covering and closing the gap between the fixed body and the eccentric body. The method of claim 1, An elastic member is provided in the form of a cover to close the gap between the fixed body and the eccentric body to connect the fixed body and the eccentric body; The balance body, Massage device is installed between the fixed body and the eccentric body is located inside the elastic member. The method according to any one of claims 1 to 4, The balance body, It is made of a bowl shape having a concave groove portion, the driving device for a massage device, characterized in that provided with the groove portion to wrap one end of the eccentric body or the fixed body. The method according to any one of claims 1 to 4, The eccentric, The driving device for a massage device, characterized in that rotates along the long groove in a state inserted into a circular long groove formed on one surface of the eccentric body or the fixed body.

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