CN215230036U

CN215230036U - Massage device

Info

Publication number: CN215230036U
Application number: CN202022663229.7U
Authority: CN
Inventors: 高桥良三
Original assignee: France Bed Co Ltd
Current assignee: France Bed Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-12-21
Anticipated expiration: 2030-11-17

Abstract

The massage device comprises a first guide rail, a second guide rail, a first transmission belt, a second transmission belt, a driving device for driving the first transmission belt and the second transmission belt to travel, a massage roller and a holding body which is connected to the first guide rail and the second guide rail and holds the massage roller. The driving device includes first and second driving pulleys around which the first belt is wound, third and fourth driving pulleys around which the second belt is wound, and a driving source that rotates the first and second driving pulleys in opposite directions and rotates the third and fourth driving pulleys in opposite directions. When the first and second driving pulleys rotate, one of them winds the first belt and the other thereof feeds the first belt by the amount of the winding. When the third and fourth driving pulleys rotate, one of them winds the second belt and the other thereof feeds the second belt by the amount of the wound second belt. The holding body and the massage roller move along with the walking of the first and second transmission belts.

Description

Massage device

Technical Field

The utility model relates to a massage device which can massage the whole body of a user.

Background

In general, a massage device includes a base, a pair of guide rails provided on an upper surface of the base in a longitudinal direction of the base, and a holding body provided so as to be capable of running along the guide rails and to which massage rollers are attached. In addition, a driving device is provided at one end side of the base body in the longitudinal direction, and the massage roller travels by the driving device.

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

There is room for various improvements in existing massage devices. For example, since the massage device is driven in a state where the user sleeps on the upper surface thereof, a load is applied to a driving mechanism for running the massage roller, and the massage roller reciprocates a plurality of times each time the massage device is used. Therefore, it is required to improve the durability of the drive mechanism. Further, for example, when a plurality of massage rollers are arranged in the longitudinal direction, in order to provide a comfortable feeling of use, it is necessary to make a time between the arrangement of the massage rollers.

Therefore, one of the objects of the present invention is to improve the durability or the feeling of use of the massage device.

Means for solving the problems

An embodiment massage device, comprising: a first guide rail and a second guide rail arranged in parallel; the first transmission belt can run along the first guide rail; the second driving belt can run along the second guide rail; a drive device that causes the first belt and the second belt to travel; the massage roller is used for massaging a user; a holding body connected to the first and second transmission belts and holding the massage roller. The driving device includes: a first driving pulley around which a portion including one end of the first belt is wound; a second driving pulley around which a portion including the other end of the first belt is wound; a third driving pulley around which a portion including one end of the second belt is wound; a fourth driving pulley around which a portion including the other end portion of the second belt is wound; a drive source that rotates the first drive pulley and the second drive pulley in opposite directions and rotates the third drive pulley and the fourth drive pulley in opposite directions. When the first driving pulley and the second driving pulley rotate, one of the first driving pulley and the second driving pulley winds the first driving belt, and the other of the first driving pulley and the second driving pulley feeds the first driving belt by the amount of the wound first driving belt. When the third driving pulley and the fourth driving pulley rotate, one of the third driving pulley and the fourth driving pulley winds the second transmission belt, and the other of the third driving pulley and the fourth driving pulley feeds the second transmission belt by the wound amount. The holding body and the massage roller move along with the travel of the first belt and the second belt.

For example, the distance between the pair of the holding bodies in the longitudinal direction is 500mm or more and 560mm or less.

For example, at least one of the first belt and the second belt is formed of stainless steel having a thickness of 0.13mm to 0.17 mm.

The massage device may further include: a first connecting portion connecting the one end portion of the first drive belt to an outer peripheral surface of the first driving pulley; and a second connecting portion connecting the other end portion of the first drive belt to an outer peripheral surface of the second drive pulley. In this case, it is preferable that the first driving pulley is wound with the first connecting portion as a base point by 1 or more turns in a state where the first driving pulley is fed out from the first driving pulley to the maximum; the first drive belt is wound around the second drive pulley by 1 turn or more with the second connecting portion as a base point in a state where the first drive belt is fed out from the second drive pulley to the maximum.

In addition, the massage device may further include: a third connecting portion that connects the one end portion of the second belt to an outer peripheral surface of the third driving pulley; and a fourth connecting portion connecting the other end portion of the second belt to an outer peripheral surface of the fourth driving pulley. In this case, in a state where the second belt is maximally fed out from the third driving pulley, the second belt is wound around the third driving pulley by 1 turn or more using the third connecting portion as a base point; the second belt is wound around the fourth driving pulley by 1 turn or more with the fourth connecting portion as a base point in a state where the second belt is maximally fed out from the fourth driving pulley.

Effect of the utility model

According to the utility model discloses, can improve massage device's durability or use sense.

Drawings

Fig. 1 is a schematic top view of a massage apparatus with an external material removed.

Fig. 2 is an overall sectional view of the massage apparatus.

Fig. 3 is an enlarged sectional view of the massage device taken along line iii-iii of fig. 2.

Fig. 4 is a schematic plan view showing the structure of the guide rail and the driving device.

Fig. 5 is a schematic cross-sectional view of the massage device along line v-v of fig. 4.

Fig. 6 is a schematic cross-sectional view of the guide rail.

Fig. 7 is a cross-sectional schematic view of the guide rail in a different position than fig. 6.

Fig. 8 is a schematic side view of a portion of the base forming the first soft portion.

Fig. 9 is a schematic plan view of a portion of the guide rail forming the second flexible portion.

FIG. 10 is a schematic cross-sectional view of the guide rail taken along line X-X of FIG. 9.

FIG. 11 is a schematic cross-sectional view of the massage device taken along line XI-XI in FIG. 3.

Fig. 12 is a perspective view of the guide member.

Fig. 13 is a perspective view of a connection mechanism between the mounting plate and the wire rope.

Fig. 14 is a side view schematic of the control device.

FIG. 15 is a schematic cross-sectional view of the control device along the XV-XV line of FIG. 14.

Fig. 16 is a side schematic view of a frame of the control device.

Fig. 17 is a schematic sectional view showing a part of a guide groove provided in a disk-shaped body of the control device.

Fig. 18 is a side view of the massage apparatus in a folded state.

Fig. 19 is a schematic sectional view of the side of the first flexible part and the second flexible part of the massage device in a folded state.

Fig. 20 is a schematic sectional view showing an example of a connection mode between the belt and the driving pulley.

Fig. 21 is a schematic view showing a part of the first driving pulley and the spacer.

FIG. 22 is a schematic cross-sectional view of the gasket taken along the XXII-XXII line of FIG. 21.

FIG. 23 is a schematic cross-sectional view of the gasket taken along the lines XXIII-XXIII of FIG. 21.

Fig. 24 is a side schematic view of the massage device folded into two layers.

Detailed Description

Some embodiments are described with reference to the accompanying drawings.

The massage device 1 shown in fig. 1 and 2 includes a rectangular base body 2. The base 2 may be molded from a synthetic resin such as nylon, polypropylene, polyethylene, or polyurethane.

As shown in fig. 8, a plurality of cavities 4 having a rectangular cross section are formed in the base 2 at predetermined intervals in the longitudinal direction so as to penetrate through the base in the width direction. The plurality of cavities 4 located at the middle portion (e.g., one or two portions) in the longitudinal direction of the base 2 are opened to the lower surface of the base 2 through the slits 6. The slit 6 is provided across the entire length of the base 2 in the width direction. The base body 2 can be bent at the middle portion in the longitudinal direction as shown in fig. 19 by the cavity 4 and the slit 6. That is, the first flexible portion 8 is formed at the middle portion in the longitudinal direction of the base 2 so as to be foldable with respect to the base 2.

A pair of guide rails 10 (a first guide rail and a second guide rail) are provided on the upper surface of the base body 2 along the longitudinal direction of the base body 2, and the guide rails 10 are provided in parallel and spaced apart from each other. The rail 10 is formed of, for example, the same synthetic resin as the base body 2, and has a cross-sectional shape as shown in fig. 3. In the example of fig. 3, the guide rail 10 includes a strip-shaped base 12, a substantially C-shaped locking portion 14, a strip-shaped support portion 16, and L-shaped pieces 18, wherein the locking portion 14 is provided at one end of the base 12 in the width direction, the support portion 16 is provided at the other end of the base 12, and the L-shaped pieces 18 are provided in pairs on the upper and lower surfaces of the intermediate portion of the base 12 in the width direction, respectively. An upper passage 20 is formed on the upper surface side of the base 12 by a pair of L-shaped pieces 18. The lower surface side of the base 12 forms a lower passage 22 by a pair of L-shaped pieces 18. A guide surface 24 on which a wheel 108 described later runs is formed between the locking portion 14 on the upper surface side of the base 12 and the L-shaped piece 18 adjacent thereto.

Only one end portion of the guide rail 10 in the longitudinal direction is fixed to the base body 2 by a screw 26 as shown in fig. 1, and the other portion is slidably held by a support 28 shown in fig. 1 and 3. The stay 28 has an intermediate edge 32, a first holding portion 34, and a second holding portion 36, wherein the intermediate edge 32 is fixed to the base 2 by a screw not shown, the first holding portion 34 is slidably engaged with the lower side of the locking portion 14, and the second holding portion 36 is slidably engaged with the support portion 16. Thereby, the other end of the guide rail 10 is freely extended and contracted with respect to the base body 2.

Further, as shown in fig. 9 and 10, a plurality of slits 38 are formed at predetermined intervals in the longitudinal direction at portions of the guide rail 10 corresponding to the first flexible portions 8 of the base 2, that is, at intermediate portions (for example, one or two portions) in the longitudinal direction, and the slits 38 cover the entire length in the width direction of the locking portion 14, the support portion 16, and the L-shaped piece 18. As a result, as shown in fig. 1, the intermediate portion in the longitudinal direction of the rail 10 constitutes a second flexible portion 40 that is bendable together with the first flexible portion 8 through the slit 38.

As shown in fig. 5, the other end portion of the guide rail 10 is bent upward so as to be spaced apart from the upper surface of the base 2. As shown in fig. 4 and 5, a mount 42 is attached to the lower surface of this portion, and the mount 42 holds the rail 10 in a bent state. The pitch roller 44 is rotatably supported by a support shaft 46 at an intermediate portion of the mount 42. The support pulley 48 is rotatably supported by a support shaft 50 at an end portion projecting from the other end portion of the guide rail 10. Further, the guide rail 10 and the mount 42 have an opening 52 formed at a position corresponding to the pitch roller 44.

A rigid plate material 54 is joined to the lower surface of one end side in the longitudinal direction of the base body 2, and a driving device 56 is provided on the upper surface. The drive 56 has a housing 58 which is fixed to the base body 2. As shown in fig. 4, a mounting plate 62 is provided in the housing 58, both ends of the mounting plate 62 are bent into support pieces 60 having a substantially L-shape, and the width of the mounting plate 62 is shorter than the width of the housing 58. The mounting plate 62 is mounted with a drive source 64 in which a speed reducer and a motor are integrated. The output shaft 66 of the drive source 64 protrudes to the outer surface side of the one support piece 60. The output shaft 66 is fitted with a first gear 68 and a first driving pulley 70.

The mounting plate 62 is provided with a first mounting shaft 72, and both ends of the first mounting shaft 72 are rotatably supported by the support pieces 60. Both end portions of the first mounting shaft 72 protrude to the outer surface side of the support piece 60. One of the two end portions is fitted with a second gear 74 and a second driving pulley 76 paired with the first driving pulley 70. The second gear 74 meshes with the first gear 68. The third gear 78 and the third driving pulley 80 are fitted to the other end of the first mounting shaft 72. The other support piece 60 of the mounting plate 62 is rotatably provided with a second mounting shaft 81. The second mounting shaft 81 is fitted with a fourth gear 82 meshing with the third gear 78 and a fourth driving pulley 84 paired with the third driving pulley 80.

When the output shaft 66 rotates, the third gear 78 and the fourth gear 82 rotate in opposite directions while the first gear 68 and the second gear 74 rotate in opposite directions. Further, the first to

fourth gears

68, 74, 78, 82 rotate at the same number of revolutions. By the rotation of these

gears

68, 74, 78, and 82, the first driving pulley 70 and the second driving pulley 76 rotate in opposite directions, and the third driving pulley 80 and the fourth driving pulley 84 rotate in opposite directions.

One end of a belt 86 (first belt) as an example of a power transmission body is connected to the first driving pulley 70, and a portion including the one end is wound around the belt. The second driving pulley 76 is connected to the other end of the belt 86, and a portion including the other end is wound around the belt.

One end of another belt 86 (second belt) is connected to the third driving pulley 80, and a portion including the one end is wound. The other end portion of the belt 86 is connected to the fourth driving pulley 84, and a portion including the other end portion is wound around the belt.

In the present embodiment, each transmission belt 86 is formed of stainless steel. In addition, the transmission belt 86 may be formed of steel, cloth, rubber, or the like. In addition, as the power transmission body, a chain or a wire rope may be used instead of the belt 86.

The belts 86 are respectively passed through the upper passages 20 of the guide rails 10 from the first driving pulley 70 and the fourth driving pulley 84. The intermediate portion of the belt 86 drawn out from the upper passage 20 is hooked on the support pulley 48 provided on the mount 42. The running direction of the belt 86 is switched by substantially 180 degrees by the support pulley 48, and then the belt passes through the lower passage 22 from the opening 52 formed in the guide rail 10. The other end portion of the one-side belt 86 drawn out from the lower passage 22 of the one-side guide rail 10 is wound around the second driving pulley 76. The other end of the belt 86 drawn out from the lower path 22 of the other guide rail 10 is wound around the third driving pulley 80.

When the first driving pulley 70 and the second driving pulley 76 rotate in opposite directions, the belt 86 trained on these pulleys is wound around one pulley, and only that part is fed out from the other pulley. For example, in fig. 5, when the first driving pulley 70 rotates in the arrow X direction and the second driving pulley 76 rotates in the arrow Y direction, the portion of the belt 86 passing through the upper path 20 is conveyed in the arrow Z direction. Similarly, when the third driving pulley 80 and the fourth driving pulley 84 rotate in opposite directions, the belt 86 trained on these pulleys is wound around one pulley, and only that portion is fed out from the other pulley.

As shown in fig. 1, a pair of holding bodies 90 are provided between the pair of guide rails 10, and the holding bodies 90 are spaced apart from each other at a predetermined interval in the longitudinal direction of the guide rails 10. As shown in fig. 3, the holding body 90 has a hollow shaft 92. Both end portions of the hollow shaft 92 are detachably fitted into mounting holes 96 formed in the support 94. A screw shaft 98 passes through the hollow shaft 92. Both end portions of the screw shaft 98, which form the male screw 100, protrude from a bottom wall 102 of the mounting hole 96, and the protruding portions are fastened by an embedded screw 104.

As shown in fig. 3 and 11, a pair of wheels 108 are rotatably provided on the support member 94 via a fulcrum 110. The wheels 108 run along the guide surfaces 24 of the guide rail 10. As shown in fig. 11 and 12, a horizontal side of a substantially T-shaped guide member 112 is fixed to a lower end portion of the support 94. A vertical side of the guide member 112 protrudes from the lower end of the support 94, and the protruding portion is formed with a curled portion 113. The intermediate portion of a freely bendable wire rope 115, which is an example of a coupling member, is slidably passed through the winding portion 113. The wire rope 115 is provided at both ends thereof with mounting hardware 117. These mounting metal members 117 are fixed to the upper portion of the outer surface of the support 94 by means of screw locking.

The intermediate portions on both sides of the reel-back portion 113 in the wire rope 115 are respectively linked to a pair of mounting plates 119, and the pair of mounting plates 119 are respectively fixed to the upper surfaces of the portions of the transmission belt 86 that pass through the upper passage 20. That is, as shown in fig. 13, a pair of insertion portions 121 are formed in the mounting plate 119, and the wire rope 115 is inserted through these insertion portions 121. Thus, the wire rope 115 is bent into a substantially triangular shape having a portion between the pair of mounting plates 119 as a bottom side. The wire rope 115 links the movement of the holding body 90 and the belt 86 via the mounting plate 119.

The hollow shaft 92 of the holder 90 is provided with four collars 116 rotatably and axially without displacement. Each collar 116 has mounted thereon a massage roller 118. The massage roller 118 is molded from a relatively hard elastic material such as rubber or synthetic resin, and has a plurality of substantially hemispherical projections 120 provided on its outer circumferential surface at predetermined intervals in the circumferential direction. On the outer peripheral surface of each collar 116, a stopper 122 is provided to prevent the massage roller 118 from shifting in the axial direction of the collar 116. The portions corresponding to the respective projections 120 are provided with the hollow portions 121 in the axial direction, so that the projections 120 are easily elastically deformed inward in the radial direction.

The running direction of the belt 86 is controlled by a control device 124 provided in the housing 58 of the drive device 56. As shown in fig. 14 to 17, the control device 124 includes a disk-shaped body 126. The disk-shaped body 126 is secured to the first mounting shaft 72 of the mounting plate 62 supported within the housing 58 by set screws 128. Dish-shapedA first guide groove 130 and a second guide groove 132 are formed as guide portions in a spiral shape on both side surfaces of the body 126. A part of the

guide grooves

130, 132 is provided with a first step 134 and a second step 136 which make the grooves shallower than the other parts. The first segment 134 is disposed from the rotation center O of the disk-shaped body 126 to R in the radial direction₁Second segment 136 is set to R₂The position of (a). R₁Ratio R₂Is large. Thus, the first section 134 is located radially outward of the turns of the guide slot that protrude beyond the second section 136.

The mounting plate 62 is provided with a pair of support pieces 138 near the disk-shaped body 126, and the support pieces 138 are provided with support shafts 140. One end of a frame 142 having a substantially C-shaped cross section is attached to the support shaft 140. One end of a band-shaped plate spring 144 is fixed to the outer surface of each of both sides of the frame 142. The other ends of the plate springs 144 are provided with shaft-like bodies 146, respectively. The shaft-like bodies 146 are projected toward the inner surface side from through holes 148 provided on both sides of the frame 142 by the urging force of the leaf springs 144.

The outer surfaces of both sides of the frame 142 are provided with a first limit switch 150 and a second limit switch 152, respectively. These limit switches 150, 152 are fixed to a plate material 154. When the other end side of the plate spring 144 is elastically deformed in a direction away from the outer surface of the frame 142, the

limit switches

150 and 152 are operated by the plate spring 144. As shown in fig. 14, the frame 142 is inclined in the direction of the disk member 126, and the pair of shaft members 146 are engaged with the first guide groove 130 and the second guide groove 132, respectively. When the disk member 126 rotates as described later, the shaft member 146 moves relatively along the

guide grooves

130, 132. When the shaft body 146 is displaced according to the first segment 134 or the second segment 136, the plate spring 144 is elastically deformed.

The limit switches 150, 152 are electrically connected to the drive source 64 of the drive device 56. When the output shaft 66 of the drive source 64 rotates in a clockwise direction, for example, the rotational direction of the output shaft 66 is switched to a counterclockwise direction when the first limit switch 150 is operated. When the output shaft 66 rotates counterclockwise, the rotation direction of the output shaft 66 is changed to the clockwise direction when the second limit switch 152 is operated.

On the other hand, as shown in fig. 1, a wall member 160 is provided on the upper surface of the base 2 at the outer side of the pair of guide rails 10 and at one end in the longitudinal direction of the base 2. The wall member 160 is formed of a flexible elastic material such as foamed polyurethane. Further, the base body 2 is covered with an outer material 162, and the outer material 162 is formed by sewing a cloth having relatively excellent wear resistance such as canvas into a bag shape.

The drive device 56 can be remotely operated by a not-shown switch box.

Next, a case of using the massage device 1 configured as described above will be described. First, when the user lies down on the massage apparatus 1, the switch box is operated to operate the driving source 64 of the driving device 56. When the drive source 64 is operated to rotate the output shaft 66 in the clockwise direction indicated by the arrow X in fig. 5, the first drive pulley 70 and the fourth drive pulley 84 rotate in the same direction, and the second drive pulley 76 and the third drive pulley 80 rotate in opposite directions. Therefore, the pair of belts 86 are wound around the first driving pulley 70 and the fourth driving pulley 84, respectively, and are fed out from the second driving pulley 76 and the third driving pulley 80, respectively, in accordance with the winding. Thereby, the portion of the belt 86 that passes through the upper passage 20 of the guide rail 10 travels in the direction indicated by the arrow Z in fig. 5. When the belt 86 travels in this manner, the belt 86 pulls the wire rope 115 through the mounting plate 119, and the pair of holding members 90 and the belt 86 travel in an interlocking manner. The plurality of massage rollers 118 provided in the hollow shaft 92 of the holding body 90 travel while rotating in the direction indicated by the arrow S in fig. 11 by coming into contact with the inner surface of the outer material 162, and the protrusions 120 massage the back surface of the user.

On the other hand, when the output shaft 66 rotates in the arrow X direction, the first mounting shaft 72 rotates in the arrow Y direction, and the disk-shaped body 126 of the control device 124 is linked with the rotation. When the disk member 126 rotates in the direction of arrow Y, the shaft members 146 engaged with the first guide groove 130 and the second guide groove 132 of the disk member 126 move relatively along the

guide grooves

130 and 132, and the frame 142 rotates in the direction of arrow T in fig. 14. When the shaft member 146 engaged with one side of the first guide groove 130 is displaced in the direction protruding from the first guide groove 130 by the first step portion 134 in accordance with the rotation of the disk member 126, the plate spring 144 attached with one side of the shaft member 146 is elastically deformed as shown by a chain line in fig. 16, and the first limit switch 150 is operated. At this time, the rotation direction of the output shaft 66 of the drive source 64 is switched in accordance with the signal from the first limit switch 150, whereby the traveling direction of the portion of the transmission belt 86 passing through the upper passage 20 becomes the direction opposite to the direction of the arrow Z. Therefore, the pair of holding bodies 90 and the belt 86 travel in conjunction with each other, so that the user is massaged by the massage rollers 118. At this time, since the disk-shaped body 126 rotates in the direction opposite to the direction of the arrow Y, the frame 142 rotates in the direction opposite to the direction of the arrow T. When the other shaft-like body 146 engaged with the second guide groove 132 is displaced by the second step 136, the other plate spring 144 to which the shaft-like body 146 is attached is elastically deformed as shown by a chain line in fig. 16, and the second limit switch 152 is operated. Then, the direction of rotation of the output shaft 66 of the drive source 64 is switched in accordance with the signal from the second limit switch 152, whereby the traveling direction of the pair of holding bodies 90 is changed to the Z direction again.

As described above, the pair of holding bodies 90 repeatedly reciprocate between the distances corresponding to the number of rotations of the disk-shaped body 126 that operates the first limit switch 150 or the second limit switch 152.

When the massage device 1 is not used, it can be folded into three layers from the middle portion in the longitudinal direction of the base body 2, for example, as shown in fig. 18. That is, the first flexible portion 8 and the second flexible portion 40, which are bendable, are formed at the longitudinal intermediate portions of the base 2 and the rail 10, respectively. This allows the base body 2 and the guide rail 10 to be folded together with the wall member 160 provided on the upper surface of the base body 2. For example, in the state folded into three layers, the length of the massage device 1 is about 1/3, and therefore, the massage device is easy to store.

When the massage device 1 is folded, the holding body 90 may be stopped at the first flexible portion 8 and the second flexible portion 40, which are bent portions of the base body 2 and the guide rail 10. When the base body 2 and the guide rail 10 are bent in this state, the interval W of the pair of mounting plates 119 fixed to the belt 86 as shown in fig. 19₁And the interval W before bending as shown in FIG. 11₂It is smaller. Therefore, the portion of the bottom side of the wire rope 115 bent into a substantially triangular shape depends on (W)₂-W₁) The holding body 90 is bent from the bent portions of the first flexible portion 8 and the second flexible portion 40 to the extent that the wire rope 115 is bent in the arrow direction, as shown in fig. 19. Thus, the first flexible portion 8 and the second flexible portion 40 are not bent by the holding member 90. That is, when the massage device 1 is used, the wire rope 115 firmly links the holding body 90 and the travel of the transmission belt 86. On the other hand, when the holding body 90 is stopped at the positions of the first flexible portion 8 and the second flexible portion 40 during folding in use, the wire rope 115 retracts the holding body 90 to a state where the bending of the first flexible portion 8 and the second flexible portion 40 is not hindered.

As shown in fig. 1, the pair of holding bodies 90 are disposed with an inter-axis distance D in the longitudinal direction of each guide rail 10. The inter-shaft distance D corresponds to the distance between the centers of the hollow shafts 92 of the respective holders 90. The interaxial distance D is preferably 500mm or more and 560mm or less, and 530mm in one example. If the distance D between the shafts is too large, the user cannot feel comfortable. If the inter-axis distance D is too small, the range in which the holding body 90 needs to move when massaging the user becomes large, and a load is applied to the transmission belt 86. On the other hand, when the distance D between the shafts is set within the above range, the massage rollers 118 held by the holding bodies 90 can give the user a sense of use of their own, and the load on the belt 86 can be suppressed.

Here, an example of the connection form of the respective belts 86 and the first to fourth driving pulleys 70, 76, 80, 84 will be described with reference to fig. 20. In fig. 20, a connection form of the first driving pulley 70 and the belt 86 is representatively illustrated.

One end portion of the belt 86 is connected to the outer peripheral surface of the first driving pulley 70 via a connecting portion 200 (first connecting portion). The connecting portion 200 has a recess 210, a female screw portion 220, a spacer 230, and a male screw portion 240, wherein the recess 210 is provided on the outer peripheral surface of the first driving pulley 70, the female screw portion 220 is provided on the first driving pulley 70 in the recess 210, the spacer 230 is fitted into the recess 210, and the male screw portion 240 is inserted through holes provided in the transmission belt 86 and the spacer 230 and screwed into the female screw portion 220.

In the recess 210, a portion of the belt 86 is located between the spacer 230 and the inner wall of the recess 210. That is, a part of the transmission belt 86 is pressed to the inner wall of the recess 210 by the spacer 230, whereby the part of the transmission belt 86 is fixed to the first driving pulley 70. The belt 86 has a bent portion 86a at one end portion connected to the first driving pulley 70 via the connecting portion 200, and the bent portion 86a is bent so as to cover the outside of the head portions of the washer 230 and the male screw portion 240.

P1 in the drawing indicates the position where the transmission belt 86 is connected to the first drive pulley 70 by the connecting portion 200, i.e., the positions of the central axes of the female screw portion 220 and the male screw portion 240. P2 in fig. 2 indicates a position where the belt 86 is separated from the first driving pulley 70.

Preferably, the belt 86 is wound around the connecting portion 200 as a base point for 1 turn or more in a state where the belt 86 is maximally fed out from the first driving pulley 70. Further, the number of turns of the transmission belt 86 corresponds to a range from the position P1 to P2. Thus, since the connection portion 200 is always covered with the transmission belt 86, the male screw portion 240 is not easily detached, thereby improving the durability of the massage device 1. Further, since the bent portion 86a also covers the outside of the head portion of the male screw portion 240, this effect is improved.

More preferably, the belt 86 is wound around the connecting portion 200 as a base point for 1.75 turns or more in a state where the belt 86 is maximally fed out from the first driving pulley 70. Thereby, the male screw portion 240 is more appropriately pressed against the first driving pulley 70.

The same configuration as that of fig. 20 can be applied to the second to fourth driving pulleys 76, 80, 84. That is, as shown in parentheses in fig. 20, the second driving pulley 76 and the other end portion of the belt 86 (first belt) are connected by a connecting portion 300 (second connecting portion), the third driving pulley 80 and one end portion of the other belt 86 (second belt) are connected by a connecting portion 400 (third connecting portion), and the fourth driving pulley 84 and the other end portion of the other belt 86 (second belt) are connected by a connecting portion 500 (fourth connecting portion). The structures of the connection parts 300, 400, and 500 are the same as the connection part 200. In each of the second to fourth driving pulleys 76, 80, 84, the transmission belt 86 is preferably wound around the connecting portion 300, 400, 500 by 1 turn or more, more preferably 1.75 turns or more.

The control for setting the maximum number of windings of the belt 86 to 1 or more or 1.75 or more when being fed out from the first to fourth driving pulleys 70, 76, 80, 84 may be performed electrically by the driving source 64 based on a signal output from at least one of the first limit switch 150 and the second limit switch 152.

In the case where the transmission belt 86 is formed of stainless steel, the transmission belt 86 is easily broken when it is too thin, and easily broken when it is too thick. Therefore, the thickness t of at least one of the pair of belts 86 is preferably 0.13mm or more and 0.17mm or less, and preferably 0.15 mm. This further improves the durability of the massage device 1.

Fig. 21 is a schematic view showing a part of the first driving pulley 70 and the spacer 230. FIG. 22 is a schematic cross-sectional view of gasket 230 taken along lines XXII-XXII of FIG. 21, and FIG. 23 is a schematic cross-sectional view of gasket 230 taken along lines XXIII-XXIII of FIG. 21. A portion of the male threaded portion 240 is also shown in fig. 23.

As shown in fig. 21, the concave portion 210 is provided across the entire length in the width direction of the first driving pulley 70. For example, the width of the recess 210 and the spacer 230 is substantially the same as the width of the belt 86.

The spacer 230 has an upper surface 231, a lower surface 232, a pair of

side surfaces

233a, 233b in the width direction of the first driving pulley 70, a pair of

side surfaces

234a, 234b in the circumferential direction of the first driving pulley 70, and a through hole 235 penetrating between the upper surface 231 and the lower surface 232.

The through hole 235 is provided at a position corresponding to the female screw portion 220 when the gasket 230 is fitted into the recess 210, and has a tapered surface 235a whose diameter decreases from the upper surface 231 side toward the lower surface 232 side.

As shown in fig. 23, the

side surfaces

234a, 234b and the tapered surface 235a are similarly inclined. The lower surface 241 of the head of the male screw portion 240 is also inclined in the same manner as the tapered surface 235 a. As shown in fig. 20, the inner wall of the recess 210 facing the

side surfaces

234a and 234b is also inclined similarly to the

side surfaces

234a and 234 b.

For example, in a circumferential cross section as shown in fig. 23, the upper surface 231 has the same curvature as the outer peripheral surface of the first driving pulley 70. In addition, in the cross section in the width direction as shown in fig. 22, the upper surface 231 has a smaller curvature than in the case of the cross section in the circumferential direction. The upper surface 242 of the head of the male portion 240 is also curved. Thus, in a state where the spacer 230 is fitted into the recess 210 as shown in fig. 20, the

upper surfaces

231 and 242 form a smooth curved surface together with the outer peripheral surface of the first driving pulley 70. Therefore, a load is less likely to be applied to the portion of the belt 86 wound around the first driving pulley 70. Accordingly, the durability of the massage device 1 is improved.

The present invention is not limited to the above embodiment, and can be implemented in various ways. For example, the number and positions of the first flexible portions and the second flexible portions formed on the base and the guide rail are not limited to the example in which the first flexible portions and the second flexible portions are provided at two positions in the longitudinal direction of the base and the guide rail, respectively, as described in the above embodiment. As another example, the first flexible portion and the second flexible portion may be provided at one position such as a longitudinally intermediate portion between the base and the rail. In this case, the massage device can be folded into two layers as shown in fig. 24, for example.

Further, the base body and the guide rail may be made of a flexible material such as nylon without forming the first flexible portion and the second flexible portion in the base body and the guide rail. Further, bars connecting the pair of guide rails in a parallel and separated state may be provided instead of the base.

As described in the above embodiment, the massage apparatus 1 including the pair of guide rails 10, the pair of belts 86, the drive device 56, the massage roller 118, and the holding body 90, and the drive device 56 including the first to fourth drive pulleys 70, 76, 80, 84 and the drive source 64 can improve durability and provide a good feeling of use.

Claims

1. Massage device, its characterized in that includes:

a first guide rail and a second guide rail arranged in parallel;

the first transmission belt can run along the first guide rail;

the second driving belt can run along the second guide rail;

a drive device that causes the first belt and the second belt to travel;

the massage roller is used for massaging a user;

a holding body connected to the first transmission belt and the second transmission belt and holding the massage roller;

the driving device includes:

a first driving pulley wound around a portion of the first belt including one end portion,

a second driving pulley wound around a portion of the first belt including the other end portion,

a third driving pulley wound around a portion including one end of the second belt,

a fourth driving pulley wound around a portion of the second belt including the other end portion,

a drive source that rotates the first drive pulley and the second drive pulley in opposite directions and rotates the third drive pulley and the fourth drive pulley in opposite directions;

when the first driving pulley and the second driving pulley rotate, one of the first driving pulley and the second driving pulley winds the first driving belt, and the other of the first driving pulley and the second driving pulley feeds the first driving belt by the amount of the wound first driving belt;

when the third driving pulley and the fourth driving pulley rotate, one of the third driving pulley and the fourth driving pulley winds the second transmission belt, and the other of the third driving pulley and the fourth driving pulley sends out the second transmission belt by the amount of the wound one of the third driving pulley and the fourth driving pulley;

the holding body and the massage roller move along with the travel of the first transmission belt and the second transmission belt.

2. The massage apparatus as claimed in claim 1, wherein a pair of the holding bodies are provided, separated in a longitudinal direction of the first rail and the second rail, and respectively hold the massage rollers;

the distance between the pair of the holding bodies in the longitudinal direction is 500mm to 560 mm.

3. The massage device according to claim 1, wherein at least one of the first transmission belt and the second transmission belt is formed of stainless steel having a thickness of 0.13mm or more and 0.17mm or less.

4. The massage device according to any one of claims 1 to 3, further comprising:

a first connecting portion connecting the one end portion of the first drive belt to an outer peripheral surface of the first driving pulley;

a second connecting portion connecting the other end portion of the first drive belt to an outer peripheral surface of the second drive pulley;

the first driving pulley is configured to be wound around the first driving pulley at least 1 turn with the first connecting portion as a base point in a state where the first driving pulley is fed out from the first driving pulley to the maximum;

the first drive belt is wound around the second drive pulley by 1 turn or more with the second connecting portion as a base point in a state where the first drive belt is fed out from the second drive pulley to the maximum.

5. The massaging device of claim 4,

the first driving pulley is wound with the first connecting portion as a base point for 1.75 or more turns in a state where the first driving pulley is fed out from the first driving pulley to the maximum;

the first drive belt is wound around the second drive pulley at least 1.75 turns with the second connecting portion as a base point in a state where the first drive belt is fed out from the second drive pulley to the maximum.

6. The massage apparatus of claim 4, further comprising:

a third connecting portion that connects the one end portion of the second belt to an outer peripheral surface of the third driving pulley;

a fourth connecting portion connecting the other end portion of the second belt to an outer peripheral surface of the fourth driving pulley;

the second belt is wound around the third driving pulley by 1 turn or more with the third connecting portion as a base point in a state where the second belt is maximally fed out from the third driving pulley;

the second belt is wound around the fourth driving pulley by 1 turn or more with the fourth connecting portion as a base point in a state where the second belt is maximally fed out from the fourth driving pulley.

7. The massaging device of claim 6,

the second belt is wound around the third driving pulley by 1.75 turns or more with the third connecting portion as a base point in a state where the second belt is maximally fed out from the third driving pulley;

the second belt is wound around the fourth driving pulley by 1.75 turns or more with the fourth connecting portion as a base point in a state where the second belt is maximally fed out from the fourth driving pulley.

8. The massage apparatus of claim 4, wherein the first connection portion comprises:

a female screw portion provided in the first driving pulley;

a male thread portion screwed into the female thread portion and fixing a portion of the first drive belt to the first pulley.

9. The massage apparatus of claim 8, wherein the first connection portion further comprises: a recessed portion provided on the outer peripheral surface of the first driving pulley;

the female screw portion is provided in the recess.

10. The massaging device of claim 8, wherein the one end portion of the first belt is bent in such a manner as to cover an outer side of the male screw portion.