JP2001299851A - Massage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a massage device whose massage roller can be set to desired hardness without causing the decline of performance. SOLUTION: In this massage device provided with the massage rollers 137 and 173 for massaging the body of a user by being driven back and forth along a prescribed direction by a driving device 10, the massage rollers are formed of foaming urethane resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a massaging device capable of massaging a user by hitting and massaging with a massaging roller.

[0002]

2. Description of the Related Art There has been known a massaging device which reciprocates a massager in a predetermined direction to massage a back surface of a user by the massager. In this type of massage device, a mattress type in which a user can receive treatment on almost the entire back surface in a state in which the user is supine, and a chair in which a user can receive treatment in a portion from the waist of the back surface in a seated state Expressions are known.

[0003] In such a massaging device, in order to enhance the massaging effect, it is necessary to not only make the massaging roller run but also give a hitting motion or a massaging motion. Is being done.

Conventionally, as a massage roller of this type of massage device, a resin molded product made of a hard synthetic resin such as ethylene resin or a rubber molded product such as natural rubber or synthetic rubber has been used.

[0005] Since the former massage roller made of resin molding is hard, it is excellent in terms of abrasion resistance, coloring of a sheet to be rolled, and resistance to settling, but it is easy to cause pain to a user. In some cases, in particular, in the case of a mattress type massage device, the pain given to the user may be greater than in the case of a chair type massage device.

[0006] The latter rubber-made massage roller can be made sufficiently softer than a resin-molded massage roller. However, rubber massage rollers are not only too soft in some cases, but also are subject to abrasion, coloring of sheets, settling, and the like.

When the massage roller is formed from rubber, the hardness can be increased by adding less plasticizer. However, the hardness is such that the hardness is not too hard as a massage roller by reducing the amount of added plasticizer, and is measured by a rubber hardness tester employing a spring type hardness test A type of JIS standard vulcanized rubber physical test method. When the rubber hardness is set to 50 or less, the added plasticizer causes abrasion, sagging, coloring of the sheet, and the like, and performance such as durability suitable for use as a massage roller cannot be obtained. there were.

On the other hand, in the massage device, in order to reciprocate the massage roller in a predetermined direction by the first drive mechanism, the massage roller is rotatably provided on a holder, and the holder is rotated by the drive mechanism. It reciprocates. Furthermore, in order to enhance the massage effect, there is a device in which a massage roller provided on the holding body performs a hitting motion and a kneading motion. In this case, a second drive mechanism and a drive source for driving the second drive mechanism are provided on the holding body so that a predetermined motion can be given to the massage roller.

The drive source is housed in a drive box. Conventionally, a drive box has been formed in a box shape by a synthetic resin.
However, when the drive box is made of a synthetic resin, heat generated in the drive source is difficult to be radiated to the outside due to its heat insulating property, and there is a possibility that the temperature of the drive source abnormally rises.

[0010]

As described above, in the conventional massage apparatus, a massage roller which has appropriate hardness, has abrasion resistance, is hard to set, and has little coloring on a sheet to be rolled is used. Had not been.

In addition, when a tapping motion or a kneading motion is given to the massage roller, since the drive box for housing the drive source for driving the drive mechanism is made of synthetic resin, heat of the drive source is hardly dissipated, and the drive source is hardly radiated. There was a risk that the temperature rise would be extremely high.

It is an object of the present invention to provide a massage device which can set a massage roller to a hardness which does not cause a great pain to a user, is excellent in abrasion resistance, and is hard to set.

It is an object of the present invention to provide a massage device capable of suppressing a rise in temperature of a drive source by dissipating the heat when the drive source housed in the power box generates heat.

[0014]

According to a first aspect of the present invention, there is provided a massage apparatus having a massage roller which is reciprocated in a predetermined direction by a drive mechanism to massage a user's body, wherein the massage roller is made of urethane resin. A massage device characterized by being formed by foam molding.

According to a second aspect of the present invention, the massage roller has a hardness of 20 to 50 when measured by a rubber hardness tester employing a spring type hardness test A type of a vulcanized rubber physical test method according to JIS. 2. The massage device according to claim 1, wherein

According to a third aspect of the present invention, there is provided a massage apparatus wherein a massage roller is provided on a holder which is reciprocally driven in a predetermined direction, and the massage roller performs a massage of hitting and kneading on the body of a user. A driving mechanism provided on the body for applying a tapping motion and a kneading motion to the massage roller, and a driving force provided at one end of the holding member intersecting a predetermined direction in which the reciprocating drive is performed and driving a driving source for driving the driving mechanism. The power box includes a metal body formed in a box shape with one side open, and a synthetic resin lid joined and fixed to one side of the body. A massage device characterized in that the massage device is constituted.

According to the first and second aspects of the present invention, by forming a massage roller by foaming and molding urethane resin, a predetermined hardness can be obtained by setting a foaming ratio. The abrasion resistance can be obtained by the skin layer formed on the surface.

According to the third aspect of the present invention, the power box is composed of the main body and the lid, and the main body is made of metal and the lid is made of synthetic resin. The generated heat can be dissipated to the outside, and the weight and cost can be reduced as compared with the case where the whole is made of metal.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 32 show a first embodiment of the present invention. The mattress type massage device shown in FIG. 1 includes a rectangular flat base 1. The base 1 is made of a bendable sheet-like synthetic resin, and can be bent into two from a middle part in the longitudinal direction.

The base 1 may be constituted by laminating, for example, one synthetic resin sheet or a plurality of synthetic resin sheets having different hardness and strength. Further, the base 1 is not limited to one or a plurality of laminated synthetic resin sheets, and may have a skeleton structure or the like, and the structure, form, material, and the like are not limited at all.

A pair of guide rails 4 formed of a synthetic resin such as nylon (trade name) or polypropylene are laid on the upper surface of the base 1 at both ends in the width direction so as to be spaced apart in parallel. This guide rail 4 is shown in FIGS.
As shown in (c), the base 4a has a band-like base 4a.
L-shaped support portions 4b are formed at both ends in the width direction of a. A pair of L-shaped pieces 4c are provided on the upper and lower surfaces of the intermediate portion of the base 4a so as to face each other. As a result, a passage 4d is formed on each of the upper and lower surfaces of the base 4a.
Running surface 4e.

The guide rail 4 is slidably held on the upper surface of the base 1 by a plurality of holders 4f. That is, the holder 4f is formed in a substantially U-shape as shown in FIG. 5 (a), the middle part is joined to the lower surface of the base 1, and the L-shaped bent engagement parts at both ends are formed. 4g
Are projected from the pair of through holes 1 a formed in the base 1 toward the upper surface of the base 1, and are engaged with the support portions 4 b of the guide rail 4. Thereby, the guide rail 4 is slidably held by the base 1.

As shown in FIGS. 5 (b) and 5 (c), at one or two places in the middle of the guide rail 4, a part of the guide rail 4 excluding the base 4a is provided at a predetermined interval. A plurality of slits 5 are formed. Therefore, the guide rail 4 can be bent together with the base 1 from the slit 5 portion.

A cushion member 5 made of an elastic material such as urethane foam is provided on the upper surface of the base 1 on the outside of the guide rail 4 and on one end in the longitudinal direction.

As shown in FIG. 1, the upper surface of one end of the base 1 in the longitudinal direction, that is, the first end of the guide rail 4 is
Is provided with a driving device 10 as a driving mechanism of. The driving device 10 has a case 11 as shown in FIGS. A drive source 12 in which a speed reducer and a motor are integrated is provided in the case 11. This drive source 12
Are adapted to rotationally drive a pair of gears 13 provided on both sides of the case 11 in opposite directions. Each gear 13 is integrally provided with a drive pulley 14.

As shown in FIG. 2, each pair of drive pulleys 1
At 4, both ends of a belt 15 as a power transmission strip made of a metal band such as stainless steel are wound. The middle part of the belt 15 is inserted into the upper and lower passages 4d of the guide rail 4, and the middle part is a driven roller 16 rotatably provided at the other end of the guide rail 4.
It is hung on.

When the drive source 12 operates, each pair of gears 1
When the belt 3 is driven in the reverse direction, the belt 15 is paid out from the drive pulley 14 of one gear 13 and the other gear 1 is driven.
3 is taken up by the drive pulley 14. Thus, the belt 15 is driven to travel along the path 4d.

For example, in FIG.
When the wheel 14 is rotated in the direction of the arrow X and the other drive pulley 14 is rotated in the direction of the arrow Y, the portion of the belt 15 passed through the upper passage 4d is driven to run in the direction indicated by the arrow Z. I have.

As shown in FIG. 4, a traveling range setting mechanism 17 for reciprocatingly driving the belt 15 within a predetermined traveling range is provided in the case 11. Although not shown in detail, the traveling range setting mechanism 17 is, for example, a belt 1.
5 is detected by the number of revolutions of the drive pulley 14, etc.
The rotation direction of the gear 13 by the drive source 12 is converted by the detection signal. Thereby, the belt 15 is driven to reciprocate within a certain traveling range.

As shown in FIG. 1, a holding member 21 driven by the belt 15 is provided between the pair of guide rails 4. The configuration of the holder 21 will be described later. Further, the upper surface side of the holder 21, that is, the upper surface side of the kimono 1 is covered with the exterior ground 20 as shown in FIG. 32, and the user lies on the exterior ground 20.

As shown in FIG. 1, a pair of guide rails 4
The belt 15 is attached to one end of the
Is provided with a tension adjusting means 41 for controlling the tension of the roller.
As shown in FIGS. 6 to 9, the tension adjusting means 41 has a holding member 42 obtained by bending a plate material so that the side surface shape becomes substantially U-shaped.

The holding member 42 is provided with its rear wall joined and fixed to the case 11 of the driving device 10. A guide 43 is provided on the upper surface of the bottom of the holding member 42. The guide body 43 is formed by forming a guide groove 44 at both ends by bending it into a mountain shape having a band-shaped member. The lower ends of both ends of the guide 43 are fixedly provided on the upper surface of the bottom of the holding member 42. Note that a concave notch 45 is formed in the middle of the guide 43.

A slide member 46 is slidably supported by the holding member 42. The slide member 46 is formed by bending a band-shaped member so that the planar shape becomes substantially U-shaped. The height dimension of the middle part of the slide member 46 is cut out so as to be lower than the height dimension of the middle part where the cutout part 45 of the guide body 43 is formed.

The sliding member 46 is slidably inserted into the guide groove 44 on both sides. That is, the slide member 46 is guided by the guide groove 44 and is slidable along the upper surface of the bottom of the holding member 42.

The ends of both sides of the slide member 46 are formed as L-shaped support pieces 47. A spring 48 as an elastic member is provided between the support piece 47 and the rear wall of the holding member 42. That is, this spring 48
As shown in FIG. 7, one end is held by a pin 49 provided on the support piece 47, and the other end is held by the holding member 4.
2 is in contact with the rear wall.

FIGS. 6 and 8 show the rear wall of the holding member 42 and the case 11 of the driving device 10 to which the rear wall is joined.
As shown in FIG.
a is formed. The through holes 42a, 11a
The belt 15 is inserted through the belt.

One end surface of the guide rail 4 is in contact with an intermediate portion of the slide member 46. In this state, the tension of the belt 15 is applied to the guide rail 4 in the direction indicated by the arrow A in FIG. 1, and the guide rail 4 slides in the direction of the arrow A by the tension to compress the spring 48. That is, the guide rail 4 is elastically slidably held on the base 1 by the spring 48.

Therefore, when the length of the guide rail 4 expands or contracts due to a change in temperature or the like, the guide rail 4 slides while elastically displacing the slide member 46 of the tension adjusting means 41 in accordance with the expansion or contraction. The generated tension can be kept constant.

That is, when the guide rail 4 is extended, it is possible to prevent the generation of an unnecessary stress on the guide rail 4, and when the guide rail 4 is contracted, it is possible to prevent the belt 15 from being loosened. Further, the expansion and contraction of the guide rail 4 due to the difference in the winding diameter of the driving pulley 14 can be absorbed.

As shown in FIGS. 10 to 12, the holding body 21 has a pair of side frames 112 each having an open lower surface and formed in a box shape 2 by a synthetic resin. The pair of side frames 112 has bottoms at both ends along the traveling direction connected by connecting shafts 113, respectively.

Guide rollers 114 running on the running surface 4e formed on the guide rail 4 are rotatably provided at both ends of the pair of connecting shafts 113, and a rectangular side surface is formed in an intermediate portion. A center frame 115 is attached and fixed along the traveling direction of the side frame 112.

As shown in FIG.
A holding member 115a is attached to a lower end of a middle part of the outer surface of the outer surface 12. A wire 116 is attached to the holding member 115a.
The middle part of is inserted and fixed. Both ends of the wire 116 are guided along the direction of the end of the side frame 112, and both ends are connected to the belt 15 via a connecting member 117, and the end is connected to the connecting shaft 11.
3 and connected and fixed.

Accordingly, when the belt 15 is driven to travel, the holding member 21 is interlocked with the belt 15 via the wire 116. That is, the holder 21 is driven to reciprocate along the guide rail 4.

As shown in FIG.
An electric component box 121 is removably mounted on the outer surface of the frame 112, and a power box 122 is also removably mounted on the outer surface of the other side frame 112. A first drive shaft 123 is rotatably mounted at a lower portion at one end in the traveling direction between a pair of side frames 112 of the holding body 21, and a second drive shaft 124 is also rotatable at an upper portion of the intermediate portion. It is erected in.

The power box 122 includes a main body 122a, which is located on the inner side in the width direction of the holder 21 and has one open side.
And a lid 122b joined to the open surface and fixed by screws 122c. The main body 1
22a is formed by aluminum die casting or the like having relatively high thermal conductivity, and the lid 122b is formed of synthetic resin.

As shown in FIG. 16, the first drive shaft 123 has a first portion 123a and a second
Is divided into a portion 123b and each portion has the first
And an eccentric shaft portion 124a and a second eccentric shaft portion 124b. The eccentric shaft portions 124a and 124b are connected to each other by a joint 125 connecting the distal ends thereof with the eccentric phase shifted by 180 degrees. The joint 125 has a first bearing 126 on the center frame 115.
It is rotatably supported by.

Further, the eccentric shaft portions 124a, 124b
The base end of an arm 127 having an L-shaped side surface is rotatably and swingably connected by a second spherical bearing 129. That is, the pair of arms 127 are provided symmetrically with respect to the center of the holding body 21 in the width direction.

As shown in FIG. 18, the arm 127 has an arm housing 132 having a first rectangular opening 131 formed therein, and a second opening 133 having the same rectangular shape.
And an arm cover 135 joined and fixed to one side surface of the arm housing 132 by screws 134. The arm housing 132 and the arm cover 135 are formed of a synthetic resin such as polyacetal.

The other side of the arm housing 132 and the other side of the distal end, that is, the base end, is connected to the eccentric shafts 124a, 124a
When attached to the base 4b, a pair of support shafts 136 are integrally formed at a predetermined interval at a portion on the distal side from the base end.

As shown in FIG. 21, a main massage roller 137 having a plurality of hemispherical projections 137a provided on the outer peripheral surface thereof along the circumferential direction is provided on the pair of support shafts 136.
It is rotatably provided via a bush 138 divided into two. The main massage roller 137 passes through the support shaft 136 and is held by a mounting screw 141 screwed into a screw hole 139 formed in the arm cover 135 so as not to fall off.

Since the main massage roller 137 is attached by integrally forming the pair of support shafts 136 with the arm housing 132, the mounting operation can be performed more easily than when the support shaft 136 is a separate component. As much as possible, since the support shaft 136 does not rattle with respect to the arm housing 132, it is possible to securely mount the support shaft 136.

A holding portion 142 is formed between the joint surfaces of the arm housing 132 and the arm cover 135 as shown in FIGS. A slider 143 is provided on the holding portion 142 so as to be slidable in a direction in which the pair of main massage rollers 137 is separated, that is, in a lateral direction.

As shown in FIGS. 27 (a) and 27 (b), the slider 143 is in the form of a metal rectangular plate, and guide pieces 144 are projected from upper and lower end surfaces and both side surfaces thereof. . These guide pieces 144 are, as shown in FIG.
145 formed on both sides of opening 131 and upper and lower sides
It is slidably housed in.

FIG. 2 shows the inner surface of the arm cover 135.
As shown in FIGS. 3 and 26 (a) and 26 (b), a pair of band-shaped receiving portions 1 which enter into the lower end portions of the concave portions 145 formed on both sides of the first opening 131 of the arm housing 132.
46 are integrally formed so as to protrude.

FIGS. 23 and 26 show the receiving portion 146.
A first slot 147 is formed as shown in FIG. A screw hole 148 communicating with the first slot 147 is formed in the arm cover 135, and a first deformation screw 149 (shown in FIG. 18) is screwed into the screw hole 148.

When the first deformation screw 149 is screwed into the receiving portion 146, the portion vertically divided by the first slit groove 147 of the receiving portion 146 expands in the vertical direction, and the guide piece on the side of the slider 143. The lower surface of 144 is pressed.
Therefore, the rattling of the slider 143 in the holding section 142 in the vertical direction can be eliminated.

Further, in the arm cover 135, as shown in FIGS. 26A and 26C, second slits 151 are formed at the upper end and the lower end of the second opening 133, respectively. ing. The arm cover 135 is formed with a screw hole 152 communicating from the outer surface thereof to the second slot 151.

The screw hole 152 has the second deformed screw 15
3 is screwed. As a result, the portion of the arm cover 135 where the second slot 151 is formed bulges inward, and the guide pieces 144 provided above and below the slider 143.
Is pressed, rattling in the thickness direction intersecting the sliding direction of the slider 143 is prevented.

That is, the slider 143 is slidably provided by the first deformation screw 149 and the second deformation screw 53 without rattling in the vertical direction and the thickness direction.

As shown in FIGS. 25 (a) and 25 (b), an oil reservoir groove 132a is formed on the inner surface of a concave portion 145 formed on both sides of the first opening 131 of the arm housing 132 and on the upper and lower sides. As shown in FIGS. 26 (a) and 26 (b), an oil reservoir groove 135a is formed on the inner surface of the arm cover 135 at a position facing the recess 145. Lubricating oil is supplied to these oil sump grooves 132a and 135a.

As a result, the slider 143 slidably provided on the holding portion 142 can be slid smoothly over a long period of time.

The slider 143 has a fitting hole 154 formed therein. The middle part of the second drive shaft 124 is inserted into the fitting hole 154. This second drive shaft 1
An eccentric cam body 155 is mounted in the middle of 24.

As shown in FIG. 28, the eccentric cam body 155 has a boss 156 and an eccentric cam 157 integrally formed of synthetic resin. A shaft hole 158 is formed in the eccentric cam body 155, and the second drive shaft 124 is inserted through the shaft hole 158. A key 159 is provided between the shaft hole 158 of the eccentric cam body 155 and the second drive shaft 124 as shown in FIG.

As shown in FIG. 28, the eccentric cam portion 157 is eccentric with respect to the axis of the second drive shaft 124 and is inclined at a predetermined angle. Is provided. The eccentric cam portion 157 is fitted in a fitting hole 154 of the slider 143 via a thrust washer 160.

A cam holding member 162 made of synthetic resin is joined and fixed to the end surface of the eccentric cam portion 157, and the slider 143 is held between the cam holding member 162 and the flange portion 161. The cam holding member 162 is connected to the eccentric cam portion 15.
The diameter is larger than 7.

As shown in FIGS. 28A and 28B, a concave portion 163 is formed on the end face of the eccentric cam portion 157. The cam holding member 16
2 is provided with a convex portion 164 that fits into the concave portion 163 as shown in FIG.

On the peripheral wall of the concave portion 163 of the eccentric cam portion 157, a dividing groove 165 is formed along the axial direction. A third slot 166 is formed in the projection 164. Further, a screw hole 167 communicating with the third slot 166 is formed in the cam holding member 162. A third deformation screw 168 is screwed into the screw hole 167 as shown in FIG.

As a result, the convex portion 164 expands in the vertical direction, and presses the peripheral wall of the concave portion 163 divided by the dividing groove 165 outward in the radial direction.
The eccentric cam body 155 can be attached to the fitting hole 154 of the slider 143 without rattling because it is pressed against the inner peripheral surface of the fitting hole 154.

The second drive shaft 124 is rotationally driven as described later, and rotates up and down according to the eccentricity and the inclination angle of the eccentric cam body 155 at the same time as swinging in the direction indicated by the arrow in FIG. Therefore, each pair of main massage rollers 137 provided on these arm bodies 127 performs a kneading motion.

At this time, the slider 143 is
Since the arm member 127 slides with respect to the eccentric rotation of the arm member 57, the swing motion of the pair of arm members 127 is smoothly performed.

A cover 168 is provided at the upper part of the arm housing 132 of the arm body 127 to cover the eccentric cam body 155 projecting from the opening 131 thereof. This prevents the user's body from hitting the rotating eccentric cam body 155.

The second drive shaft 124 has a pair of center rollers 171 located on both sides of the center frame 115 as shown in FIGS. 10 and 11, and a portion near the inner surface of each side frame 112. , And a pair of auxiliary mass rollers 173 housed in a housing portion 112a formed on the upper surface of the side frame 112 are provided rotatably. I have. A plurality of semi-cylindrical protrusions 173a are provided on the outer peripheral surface of the auxiliary massage roller 173 along the circumferential direction.

The center roller 171 is the body of the user,
In particular, the portion such as the neck is prevented from hitting the center frame 115, and the side rollers 172 are connected to the side frames 112.
To prevent it from hitting the inner edge of the Further, the auxiliary mass-roller 173 has a semi-cylindrical projection 173a formed in a tapered shape which is inclined inwardly inward in the width direction of the holding body 21, so that the back surface of the user can be massaged. In addition, the taper surface prevents the body from shifting in the width direction and prevents the body from hitting the upper surface of the side frame 112.

The main massage roller 137 and the auxiliary massage roller 173 are formed by foaming urethane resin. Thereby, these massage rollers 137 and 173 are set to a desired hardness by adjusting the expansion ratio during foam molding. In this embodiment, the hardness of each of the massage rollers 137 and 173 is such that when measured by a rubber hardness meter that employs a spring type hardness test A type of the vulcanized rubber physical test method of JIS standard. It is set to be in the range of 20 to 50, preferably 30 to 50.

The first drive shaft 123 and the second drive shaft 1
One end with the projection 24 projects into the power box 122. A second drive mechanism 181 is provided in the power box 122,
The first drive shaft 1 is driven by the second drive mechanism 181.
23 and the second drive shaft 124 are selectively driven to rotate.

The second driving mechanism 181 is similar to that shown in FIGS.
As shown in FIG. 3, a reversible motor 182 housed in the power box 122 is provided. Output shaft 1 of this reversible motor 182
A rotating shaft 185 rotatably provided in the power box 122 is connected to the 83 via a joint 184.

A first worm gear 186 and a second worm gear 187 are provided on the rotating shaft 185. As shown in FIG. 15, the first worm gear 186 is rotatably provided in one direction by a first one-way clutch 188, and the second worm gear 187 is opposite to the first worm gear 186 by a second one-way clutch 189. It is provided rotatable in the direction.

A first worm wheel 191 meshes with the first worm gear 186. The first worm wheel 191 is attached to a first support shaft 192 rotatably provided at one end of the power box 122.

FIG. 1 shows one end of the first support shaft 192.
As shown in FIG. 3, it is connected to a coupling 193 rotatably provided on the side wall of the power box 122. The coupling 193 faces the through hole 194 formed in the side wall.

The power box 122 is connected to one side frame 11
2, one end of the first drive shaft 123 enters the power box 122 from the through hole 194 and is connected to the first support shaft 192 via the coupling 193 so as to rotate integrally therewith. Is done. These connections form, for example, a spline groove in the inner peripheral surface of the coupling 193,
This can be achieved by forming a spline 123c at the end of the first drive shaft 123 as shown in FIG.

Therefore, the rotation of the output shaft 183 of the reversible motor 182 in one direction is transmitted to the first drive shaft 123 via the first worm gear 186 and the worm wheel 191. . The first
Worm gear 186 and worm wheel 191
Of the power transmission mechanism.

The second worm gear 187 meshes with a second worm wheel 194. The second worm wheel 194 is attached to one end of a second support shaft 195 rotatably supported in the power box 122. As shown in FIG. 13, the other end of the second support shaft 195 is provided with a concave portion 1 formed on one side of the power box 122.
The first helical gear 19 projects from
7 is fitted.

The first helical gear 197 is meshed with a second helical gear 198. The second helical gear 198 is provided on a third support shaft 199 protruding from the outer surface of the side wall of the power box 122 forming the recess 196 so as to be rotatable and slightly move in the axial direction. .

The third support shaft 199 is provided with an intermediate gear 201 composed of a helical gear formed integrally with the second helical gear 198. Third spindle 199
A stopper 202 such as a C-ring and a corrugated washer 203 are provided at the end of the second helical gear, and the second helical gear 198 is pushed by the corrugated washer 203 in the axial direction.

The power box 122 is connected to one side frame 11
2, the intermediate gear 201 enters the concave portion 204 formed on the side surface of the side frame 112. One end of the second drive shaft 124 projects into the recess 204, and a terminal gear 205 made of a helical gear is fitted to the projected end. This terminal gear 205
, The intermediate gear 201 meshes.

When the rotating shaft 185 is driven to rotate in the direction opposite to the one direction by the reversible motor 182, the rotation is changed to the second worm gear 187 and the second worm gear 187.
Worm wheel 194, first and second helical gear 1
97, 198, an intermediate gear 201 and a terminal gear 205 to be transmitted to the second drive shaft 124.

These gear trains for transmitting power to the second drive shaft 124 constitute a second power transmission mechanism.
With such a configuration, power can be reliably transmitted to the second drive shaft 124 with a simple configuration, and two-stage deceleration is performed, and the second support shaft 195 and the second drive The shaft 124 can be arranged coaxially. In particular, since the second helical gear 198 and the intermediate gear 201 are integrally formed, the number of parts can be reduced.

The other end of the first drive shaft 123, that is, the end protruding into the other side frame, is provided with a spring clutch 206 as a third one-way clutch as shown in FIGS. Have been. The spring clutch 206 prevents the first drive shaft 123 from rotating in one direction, which is the direction of rotation, when the first drive shaft 123 is not driven to rotate.

Further, a sheet-like friction member 207 made of a material such as hard felt is attached to one side surface of the second helical gear 198. This friction member 2
07 is lightly in contact with the outer surface (fixing member) of the side wall of the concave portion 196 of the power box 122.

The second helical gear 198 meshed with the first helical gear 197 rotated by the reversible motor 182 applies an axial load in a direction away from the outer surface of the side wall depending on the direction of the tooth shape. But this helical gear 1
98 is subjected to an axial load in the opposite direction by the corrugated washer 203, so that the friction member 207 attached to the helical gear 198 is kept in light contact with the outer surface of the side wall. ing.

The friction member 207 is configured to decelerate the rotation of the second drive shaft 124 by being pressed against the outer surface of the side wall. That is, the second drive shaft 12
When the eccentric cam body 155 rotates in conjunction with the rotation of No. 4,
When the eccentric cam portion 157 moves from the bottom dead center to the top dead center, the eccentric cam portion 157 gradually rotates against the load of the user applied to the main massage roller 137.

However, after the top dead center, the eccentric cam body 155 tries to rotate rapidly due to the user's load being applied via the main massage roller 137. At this time, the rotation of the second drive shaft 124 interlocked with the rotation of the eccentric cam body 155 is transmitted to the second helical gear 198 in a direction opposite to the transmission from the first helical gear 197.

When the second helical gear 198 is transmitted from the first helical gear 197, an axial load is applied in a direction away from the outer surface of the side wall, but the second helical gear 198 is rotated by the rotation of the second drive shaft 124. In the case of reverse transmission, the second helical gear 198
, A load is applied in the axial direction toward the outer surface of the side wall. further,
The second helical gear 198 is pushed by the third washer 1 by being pushed in the side wall direction by the wave washer 203.
It moves slightly along 99, and the friction member 207 provided on the side surface is pressed against the outer surface of the side wall of the concave portion 196.

Therefore, rapid rotation of the second drive shaft 124 is prevented, so that the main massage roller 13
7 is prevented from dropping abruptly together with the arm 127, and a good massage can be obtained.

The reversible motor 182 provided on the power box 122 of the holder 21 and the electric component 208 (shown in FIG. 10) provided on the electric component box 121 are attached to the holder 21.
Is supplied via a pair of belts 15 that drive the vehicle.

That is, as shown in FIG. 6, a pair of holders 212 (only one is shown) having a conductive brush 211 electrically contacting the belt 15 are fixed to the ends of the pair of guide rails 4 by screws 213. ing. A lead wire 214 is connected to the conductive brush 211, one lead wire 124 is connected to a positive side of a DC power supply (not shown), and the other lead wire is connected to a negative side.

As shown in FIG. 3, each belt 15 has a connecting member 117 for linking the holding member 21 to the belt 15.
And electrically connected to the side frame 121 of the holder 21 via the wire 116.

Both ends of the wire 116 are fixed by nuts 221 to both ends of a pair of connecting shafts 113 connecting the pair of side frames 121. One connecting shaft 11
3 and the other connecting shaft 1
The nut 221 provided at the other end of the thirteen is formed of an electrically insulating material such as a synthetic resin, and the other nut 221 is formed of a metal which is a conductive material.

Therefore, one belt 15 is electrically connected to one connecting shaft 113 through a metal nut 221 provided at one end of one wire 116 and one end of one connecting shaft 113, and the other belt 15 is connected to the other belt 15. Wire 1
16 and a metal nut 221 provided at one end of the other connecting shaft 113 is electrically connected to the other connecting shaft 113.

As shown in FIG. 10, one connecting shaft 113
Is connected to a reversible motor 182 by a first lead wire 222, and one end of the other connecting shaft 113 is connected to the reversible motor 182 by a second lead wire 223.

The other end of the one connecting shaft 113 and the electric component 208 provided in the electric component box 121 are connected by a third lead wire 224, and the other end of the other connecting shaft 113 and the upper electric component 208 Are connected by a fourth lead wire 225.

Thus, power can be supplied to the reversible motor 182 and the electric component 208. That is, the main massage roller 1 is
Reversible motor 18 for rubbing and hitting 37
2, power can be supplied to the reversible motor 182 by using the belt 15 for running the holder 21.

The electric box 12 of the second drive shaft 124
1 is provided with a detecting mechanism 2 for detecting the eccentric position of the eccentric cam portion 157 of the eccentric cam body 155.
25 are provided. As shown in FIG. 30, the detection mechanism 61 has a disk 226 externally fitted and fixed to the end of the second drive shaft 124. A magnet 227 is embedded in the disk 226 at a position (upper fulcrum) where the eccentric amount of the eccentric cam portion 157 is greatest.

Around the disk 226, first to third three sensors 228a to 228c for detecting magnetic force are arranged at intervals of 90 degrees in the circumferential direction. That is, the sensors are arranged in one of the right and left directions of 90 degrees with respect to the up and down and up and down. Since the sensors 228a to 228c detect the magnetic force when the magnet 227 faces, the rotation angle according to the amount of eccentricity of the eccentric cam portion 157 can be detected. Thereby, the second drive shaft 1
24 can be controlled by the angle at which the magnet 227 faces each of the sensors 228a to 228c.

Since the arm 127 swings due to the rotation of the second drive shaft 124, the swinging state of the pair of arms 127 in plan view is controlled by controlling the rotation angle thereof, as shown in FIG. As shown in FIG.
Can be set to either parallel.

In the above-described embodiment, the magnetic type using a magnet is adopted, but the present invention is not limited to this, and a photoelectric type may be used.

The top surface of the base 1 is covered with a cloth cover (not shown). Therefore, if the user lies on the cover, the massage can be received on the back.

Next, a case where the massage device having the above-described configuration is used will be described.

When the user lies on the exterior ground 20 covering the support 21 on the upper surface of the base 1, the driving device 10 is operated. As a result, the holder 21 is reciprocally driven along the rail 2, so that the user can use the main massage roller 137, the auxiliary massage roller 173, and the like provided on the holder 21 to move the user to the rear of the mass roller. -Can receive

[0111] Two main mass rollers 137 are provided for each of the pair of arms 127. for that reason,
Since the massage effect given to the user is greater than in the case of only one, the massage effect can be increased accordingly.

Further, by providing two main mass rollers 137 on one arm 127 at predetermined intervals along the running direction of the holder 21, the body of the user falls in that direction. It becomes difficult, and the main mass-roller 13
The user's body is less likely to fall in the width direction of the holding body 21 even when the auxiliary mass-roller 173 is provided outside of the support member 7. Further, a center roller 171 is provided on both sides of the center frame 115 on the second drive shaft 124, and a side roller 17 is provided inside the side frame 112.
2 are provided. Further, the arm 127 is provided with a cover 168 that covers the eccentric cam body 155 provided on the arm body 127.

Therefore, these rollers and the cover 168
As a result, the body of the user lying on the base 1
1 is prevented from falling into the inside, the body is no longer strongly rubbed by the holding body 21 driven to travel. In addition, since the body of the user can be prevented from hitting the holder 21 without increasing the diameter of the massage roller 31, the thickness of the massage device does not increase.

The main massage roller 137 and the auxiliary massage roller 173 are formed by foaming urethane resin. Therefore, by setting the expansion ratio at the time of foam molding, not only can the desired hardness be obtained,
Since the skin layer is formed on the surface, the wear resistance can be improved by the skin layer. In addition, since the desired hardness can be obtained depending on the foaming rate, a plasticizer is not used as in the conventional case, and the massage rollers 137 and 173 having high wear resistance can be obtained.

In this embodiment, when the hardness of each of the massage rollers 137 and 173 is measured by a rubber hardness tester employing a spring type hardness test A type of the vulcanized rubber physical test method of the JIS standard, 20 to 100%. It was set to fall within the range of 50, preferably within the range of 30 to 50.

As a result, the massage roller 137,
173 is a softness that is too hard and does not cause pain to the user, and can be a hardness that is too soft and does not prevent the massage effect from being obtained.

The arm 127 is provided with two main massage rollers 137 at an intermediate portion and a distal portion, which are portions on the distal end side from the proximal end portion, and a slider 143 slidably held at an intermediate portion thereof. Supported by the second drive shaft 124.

Therefore, when the first drive shaft 123 is driven to perform a hitting motion in a state where the load of the user is applied to these two main massage rollers 137, the second drive shaft 124 becomes a fulcrum. The product of the distance from the center point of the drive shaft 124 to the mounting portion of the main massage roller 137 at the tip, the load applied to the main massage roller 137 at the tip, and the middle point of the second drive shaft 124 A rotational moment is generated in the arm 127 as the difference between the product of the distance to the mounting portion of the main massage roller 137 and the load applied to the main massage roller 137 in the middle.

In order to drive the first drive shaft 123, the value of the rotational moment generated in the arm 127 is determined by the distance from the second drive shaft 124, which is a fulcrum, to the first drive shaft 123. The first drive shaft 123 may be driven with a torque corresponding to the divided amount.

That is, the first drive shaft 123 can be driven with less power than when only one main massage roller 137 is provided on the distal end side of the arm 127. Similarly, when the second drive shaft 124 is driven to perform the kneading motion, it can be driven with a small torque. Therefore, the size of the reversible motor 182 for driving the first and second drive shafts 123 and 124 can be reduced.

On the other hand, when the reversible motor 182 provided on the holder 21 is operated to rotate the rotating shaft 185 in, for example, one direction (positive direction), the first and second driving shafts 12 are rotated.
3, 124, only the first drive shaft 123 can be rotationally driven in a predetermined direction.

Thus, the pair of arms 127 can be displaced vertically by the eccentric rotation of the first eccentric shaft portion 124a and the second eccentric shaft portion 124b of the first drive shaft 123. , The above-mentioned main mass-roller 31
A beating motion can be given to the sword.

The rotation shaft 18 is driven by the reversible motor 182.
If 5 is rotationally driven in the reverse direction, only the second drive shaft 124 is rotationally driven. Accordingly, the arm 127 is driven to swing, so that a kneading movement can be given to the main mass roller 137 provided on the pair of arms 127.

The hitting movement and the kneading movement by the main mass-roller 137 can be performed while the holder 21 is running back and forth. That is, since the base 1 is provided with the driving device 10 and the holder 21 is provided with the reversible motor 182, by operating both of them, the main mass roller is driven while the holder 21 is running. 137 can be selectively given either a tapping motion or a kneading motion.

Further, if the driving device 10 is operated in a state where the operation of the reversible motor 182 is stopped, the rolling massage can be given by the main massage roller 137 by running the holding member 21 and the driving device 10 is stopped. In this state, the reversible motor 182 can be operated to give the main massage roller 137 either a tapping motion or a kneading motion for use. Thus, the pair of arms 12
7 are provided with two main massage rollers 137, respectively, so that a tapping motion or a kneading motion can be performed at four locations, and an efficient and good massage can be given.

Conversely, if only one of the driving device 10 and the reversible motor 182 is operated, the main mass roller 137 is operated only when the holder 21 is running or when the holder 21 is stopped. Can be used by giving either a tapping motion or a kneading motion.

The power box 122 of the holder 21 has a reversible motor 182 and a second drive for selectively rotating the first drive shaft 123 and the second drive shaft 124 by the reversible motor 182. A mechanism 181 is provided.

For this reason, the reversible motor 182 is
The whole configuration can be made compact as compared with the case where it is separately provided. In addition, even if the reversible motor 182 is provided on the holder 21 that is driven to travel,
In this case, power can be supplied by using a pair of belts 15 for running the holding body 21, so that the configuration for power supply can be simplified.

The electric component box 12 of the first drive shaft 123
The spring clutch 206 is provided at the end protruding into the inside 1. The spring clutch 206 prevents the first drive shaft 123 from rotating in a direction opposite to the above-described predetermined direction when the first drive shaft 123 is stopped.

When the first drive shaft 123 is stopped and the second drive shaft 124 is driven to rotate and the main massage roller 137 is performing a kneading motion, the swinging arm 127
The first drive shaft 123 may slightly rotate in a direction opposite to a predetermined rotation direction as the arm 127 moves, so that the arm 127 not only swings by the second drive shaft 124 but also rotates the first drive shaft 123. A vertical movement with the base end as a fulcrum due to the rotation of is applied.

As a result, good massage may not be performed. However, the spring clutch 206 rotates the first drive shaft 123 caused by the swing of the arm 127 by the second drive shaft 124. When the arm 127 is swinging by the second drive shaft 124, the vertical movement of the first drive shaft 123 about the base end portion as a fulcrum is prevented.

That is, it is possible to prevent the tapping movement being performed during the kneading movement, so that the kneading movement by the main massage roller 137 can be reliably performed.

On the other hand, when the second drive shaft 123 is rotationally driven to cause the main massage roller 137 to perform a kneading motion, the eccentric rotation of the eccentric cam portion 157 of the eccentric cam body 155 falls from the top dead center. When moving in the direction, the user's load applied to the main massage roller 137 may cause the second drive shaft 124 to rotate rapidly together with the eccentric cam body 155. That is, in the arm 127, the portion where the main massage roller 137 is provided may be rapidly lowered with the base end as a fulcrum.

However, the friction member 207 is provided on the side surface of the second helical gear 198 of the gear train for transmitting the rotation of the reversible motor 182 to the second drive shaft 124. Therefore, the eccentric cam body 155 is connected to the second drive shaft 124.
And the second helical gear 1
98 moves slightly along the third support shaft 199, and the friction member 207 provided on the side surface thereof comes into contact with the outer wall surface of the concave portion 196 to generate a frictional force.

As a result, the rotation of the second drive shaft 124 is reduced by the frictional force.
Of the drive shaft 124 is prevented from suddenly rotating. That is, it is possible to prevent the main massage roller 137 from being rapidly lowered during the kneading motion, so that good massage can be performed.

On the other hand, in the arm 127, the arm cover 135 is joined to the arm housing 132, and the slider 143 is provided on the holding portion 142 formed between these joining surfaces.

[0137] Therefore, the arm member 127 is provided so that the slider 143 for causing the main massage roller 137 to perform the kneading motion can be reliably slid with a simple structure.
Can be provided.

The main massage roller 137 is rotatably provided on a support shaft 136 integrally formed with the arm housing 132, and is held by screwing the support shaft 136 through the mounting screw 141 to the arm cover 135. .

Therefore, since the support shaft 136 and the arm housing 132 are integrally formed, the structure can be simplified and the assembling work can be simplified as compared with the case where the support shaft 136 and the arm housing 132 are separately provided, and the main massage roller 137 can be surely prevented without rattling. It can be provided.

Power box 1 containing reversible motor 182
Reference numeral 22 includes a metal main body 122a formed by aluminum die casting and a synthetic resin lid 122b. Therefore, when the reversible motor 182 generates heat by operating, the heat is radiated to the outside through the main body 182, so that the heat is excessively retained in the power box 122 and the temperature of the reversible motor 182 rises more. Can be prevented.

On the other hand, the lid 122b of the power box 122 was made of synthetic resin. Therefore, the weight can be reduced as compared with the case where the entire power box 122 is made of metal. Moreover, the lid 122b is located outward of the holder 21 in the width direction. Therefore, when the holding body 21 is reciprocated along the guide rail 4, the lid 122 b is
Even if it comes into sliding contact with the like, it is possible to prevent the exterior ground 20 and the like from being damaged at an early stage.

In the above embodiment, the mattress type massage device has been described. However, the massage device of the present invention may be of a chair type. Further, the center roller 137 and the side roller may be formed by foaming a urethane resin similarly to the main massage roller 137 and the auxiliary massage roller 173.

FIG. 33 is a plan view of a massage device according to a second embodiment of the present invention. In this massage device, a pair of guide rails 4 provided on a base 1 are provided not only with a holder 21 but also with an attachment shaft 232 on which a plurality of massage rollers 231 are rotatably provided at a predetermined interval from the holder 21. I did it. Support members 233 are provided at both ends of the mounting shaft 232. This support member 233
Is a belt 1 driven to run along the guide rail 4
5.

The power box 12 provided on the holder 21
The two projecting portions, that is, the portions where the reversible motor 182 is provided, face the opposite direction to that of the above-described embodiment, that is, the direction of the driving device 10. In this case, although not shown in detail, the first drive shaft 123 provided on the holder 21 is provided on the side of the holder 21 opposite to the drive device 10 side.

According to such a configuration, the massage roller 231 and the holding body 21 are
Therefore, the user is also massaged by the massage roller 231. That is, a massage device having a high massage effect can be provided.

In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description is omitted.

[0147]

As described above, according to the present invention, the massage roller is formed by foaming and molding urethane resin.

Therefore, the massage roller can be set to a desired hardness by adjusting the expansion ratio during foam molding. In other words, less pain to the user,
It is possible to provide a massage roller having a softness that is hard to be softened and that can obtain a massage effect.

In addition, at the time of foam molding, since a skin layer is formed on the surface of the massage roller, the skin layer provides a massage roller having high wear resistance.

According to a second aspect of the present invention, when the hardness of the massage roller is measured by a rubber hardness tester employing a spring type hardness test A type of a vulcanized rubber physical test method in accordance with JIS standard, it is 20 to 50%. Within range.

Therefore, the massage roller is not too hard,
Moreover, it is possible to obtain an optimum hardness without being too soft.

According to a third aspect of the present invention, a drive box in which a drive source for driving a drive mechanism for applying a predetermined motion to a massage roller is housed includes a metal main body and a synthetic resin lid. did.

Therefore, even if the drive source operates and generates heat,
Since the heat is radiated to the outside through the metal main body, it is possible to prevent the temperature of the drive source from excessively increasing. Moreover, since the lid is made of synthetic resin, the drive box can be reduced in weight. That is, it is possible to provide a drive box capable of realizing both heat dissipation and weight reduction.

[Brief description of the drawings]

FIG. 1 is a plan view of a massage device according to a first embodiment of the present invention, from which an exterior ground is removed.

FIG. 2 is a partially sectional side view of the massage device.

FIG. 3 is a perspective view showing a connection structure between a support and a belt from which a power box is removed.

FIG. 4 is a plan view showing a driving device and a pair of guide rails.

5A is a cross-sectional view showing a mounting structure of a base and a guide rail, FIG. 5B is a plan view of the guide rail, and FIG. 5C is a cross-sectional view.

FIG. 6 is an exploded perspective view of a tension adjusting unit.

FIG. 7 is a partially sectional plan view of the tension adjusting means.

FIG. 8 is a longitudinal sectional view of the tension adjusting means.

FIG. 9 is a front view of a holding member of the tension adjusting means.

FIG. 10 is a plan view of the holder.

FIG. 11 is a longitudinal sectional view of a holder.

FIG. 12 is a side view of the holding body showing the inside of the power box.

FIG. 13 is a plan view showing a state where the power box of the holder is separated from the side frame.

FIG. 14 is a sectional view of a power box portion of the holder.

FIG. 15 is a perspective view illustrating a schematic configuration of a second drive mechanism that drives a first drive shaft and a second drive shaft.

FIG. 16 is a front view showing the structure of a first drive shaft.

FIG. 17 is an enlarged cross-sectional view of an eccentric cam body provided on a second drive shaft.

FIG. 18 is an exploded perspective view of the arm.

FIG. 19 is a front view of the arm.

FIG. 20 is a sectional view taken along the line XX-XX in FIG. 19;

FIG. 21 is a sectional view taken along the line XXI-XXI in FIG. 19;

FIG. 22 is a sectional view taken along the line XXII-XXII in FIG. 19;

FIG. 23 is an enlarged cross-sectional view of the structure of a slit groove for positioning the slider in the vertical direction.

FIG. 24 is a front view of the arm with the arm cover removed.

25A is a plan view of an arm housing, and FIG.
FIG. 26 is a front view, and FIG. 25C is a cross-sectional view taken along the line cc of FIG.

26A is a plan view of an arm cover, FIG. 26B is a front view, FIG. 26C is a cross-sectional view taken along the line cc of FIG. 26B,
FIG. 4D is an enlarged view of a slit groove for positioning the slider in the vertical direction.

27A is a front view of a slider, and FIG. 27B is a side view.

28A is a sectional view of an eccentric cam body, and FIG. 28B is a side view.

FIG. 29 is a sectional view of a cam holding member attached to the eccentric cam body.

FIG. 30 is an explanatory diagram of a mechanism for detecting a rotation angle of a second drive shaft.

FIGS. 31 (a) to (c) are explanatory views of a rotation angle of a second drive shaft and an inclined state of a pair of arms.

FIG. 32 is a side view showing a schematic configuration of the massage device.

FIG. 33 is a plan view of a massage device according to a second embodiment of the present invention.

[Explanation of symbols]

 Reference numeral 10: drive device (drive mechanism) 122: power box 122a: body portion 122b: lid portion 182: reversible motor (drive source)

Claims (3)

[Claims] 1. A massage device having a massage roller that is reciprocated along a predetermined direction by a drive mechanism and massages a user's body, wherein the massage roller is formed by foaming and molding urethane resin. And massage device. 2. The massage roller has a hardness in the range of 20 to 50 when measured by a rubber hardness tester employing a spring type hardness test A type of a vulcanized rubber physical test method according to JIS. The massage device according to claim 1, characterized in that: 3. A massage device in which a massage roller is provided on a holder that is reciprocally driven in a predetermined direction, and the massage roller performs a massage of hitting and massaging on the body of a user. A drive mechanism that applies a tapping motion and a kneading motion to the massage roller; and a power box that is provided at one end of the holding body that intersects a predetermined direction in which the holding member is reciprocally driven and houses a drive source that drives the drive mechanism. The power box is composed of a metal body formed in a box shape with one side open, and a synthetic resin lid joined and fixed to one side of the body. A massage device characterized by the above-mentioned.