JPS6337952Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a pine surgery device that can perform pine surgery on the user's entire body.

Generally, in the above-mentioned pine surge device, a pair of guide rails are laid along the longitudinal direction on the upper surface of the base, and a pine surge roller is provided on the guide rails so as to be freely movable. Further, a drive device is provided at one end in the longitudinal direction of the base, and the pine surge roller is driven to travel by this drive device. Therefore, when the user lies face up on the pine surge device, the user can receive pine surge all over the body by the pine surge roller.

By the way, the conventional drive device has a drive source disposed at one longitudinal end of the base, a first pulley rotationally driven by the drive source, and a first pulley disposed at the other longitudinal end of the base. and a wire stretched across the first pulley and the second pulley. The pine surge roller is indirectly connected to this wire, and when the wire is caused to travel by rotation of the first pulley, the pine surge roller is interlocked with this travel. However, when the pine surge roller is driven by a drive device having such a structure, slips are likely to occur between the wire and each pulley when a user's load is applied to the pine surge roller. As a result, the running of the wire was unstable and the pine surge roller was not driven reliably.

In order to eliminate these drawbacks, a drive system disclosed in Japanese Patent Application No. 58-63341, although unpublished, has been proposed by the same applicant as the present applicant.
The drive system in this proposal is that a pair of guide rails are arranged on the base along the longitudinal direction, and at one end of the guide rail there is a pair of drive rails that are rotated in opposite directions by a drive source. A pulley is provided, and a support pulley is provided at the other end. One end of the belt is wound around one of the drive pulleys, and the other end of the belt is wound around the other. Further, a midway portion of the belt is hung on the support pulley. The belt is wound around one of the driving pulleys and accordingly sent out from the other driving pulley to run along the guide rail, and the pine surge roller is interlocked with this running.

By the way, according to such a drive system, although slips do not occur between the belt and each pulley, the outer diameter of the driving pulley that winds the belt gradually increases, and the outer diameter of the drive pulley that winds the belt gradually increases. As the belt gradually becomes smaller, the length at which the belt is wound up becomes larger than the length at which it is fed out. Then, due to the difference in length, it is inevitable that more tension than necessary will be generated on the belt, and this tension will cause the guide rail to warp, impairing the smooth running of the pine surge roller. occurs.

This invention was made based on the above circumstances, and its purpose is to wind a belt around one of a pair of driving pulleys that are driven to rotate in opposite directions, and to drive the belt to run by feeding it out from the other. To provide a pine surge device which prevents a guide rail from being warped by the tension even if an excessive tension is generated in the belt due to the difference between the winding length and the sending length.

An embodiment of this invention is shown in Figs. 1 to 18 below.
This will be explained with reference to the figures. The pine surge device shown in FIGS. 1 and 2 includes a base 2 in the form of a rectangular plate.
This base body 2 is molded from a synthetic resin such as nylon, polypropylene, polyvinyl, or urethane, which is flexible and difficult to compress under load. A large number of cavities 4 having a rectangular cross section are formed in the base body 2 at regular intervals along its longitudinal direction, passing through the base body 2 in its axial direction. Each of the plurality of cavities 4 located at two midpoints in the longitudinal direction of the base body 2 is connected to the other end of a slit 6 whose one end is open to the lower surface of the base body 2, as shown in FIGS. 8 and 18. There is. This slit 6 is provided over the entire length of the base body 2 in the width direction. Therefore, the base body 2 can be bent from two midpoints in the longitudinal direction by the cavity 4 and the slit 6, as shown in FIG. That is, two first flexible portions 8 are formed in the middle of the base 2 in the longitudinal direction, allowing the base 2 to be folded into three parts.

A pair of guide rails 10 are provided on the upper surface of the base body 2 having such a structure, parallel to each other and spaced apart from each other along the longitudinal direction of the base body 2 . This guide rail 1
0 is made of a flexible synthetic resin that is not easily compressed under a compressive load, and has the cross-sectional shape shown in FIG. 3, like the base body 2 described above. That is, the guide rail 10 includes a band-shaped base 12, a substantially C-shaped locking part 14 provided at one end of the base 12 in the width direction,
A band-shaped support portion 16 provided at the other end and a pair of L-shaped pieces 18 protruding from the upper and lower surfaces of the midway portion in the width direction of the base portion 12 are integrally molded.
The pair of L-shaped pieces 18 define an upper passage 20 on the upper side of the base 12, and a lower passage 22 on the lower side. Further, a portion between the locking portion 14 on the upper surface side of the base portion 12 and one L-shaped piece 18 serves as a guide surface 24 on which wheels 108, which will be described later, run.

Only one end of the guide rail 10 in the longitudinal direction is fixed with a screw 26 of the base 2 as shown in FIG. 1, and the other part is fixed by a support 28 as shown in FIGS.
It is held so that it can slide freely. This support 2
Reference numeral 8 denotes an intermediate side 32 fixed to the base body 2 by a screw 30, a first holding part 34 slidably engaged with the lower side of the locking part 14, and a first holding part 34 slidably engaged with the support part 16. and a second holding part 36. Therefore, the other end of the guide rail 10 is expandable and retractable with respect to the base body 2. Further, as shown in FIGS. 9 and 10, the guide rail 10 is latched at two locations corresponding to the first flexible portion 8 of the base body 2, that is, at two midway points in the longitudinal direction. A large number of slits 38 are formed over the entire length of the portion 14, the support portion 16, and the L-shaped piece 18 in the width direction and at regular intervals in the longitudinal direction. Therefore, as shown in FIG. 1, the guide rail 10 has second flexible portions 40 that can be bent together with the first flexible portion 8 by the slits 38 at two midpoints in the longitudinal direction. It is becoming.

On the other hand, the other end of the guide rail 10 is connected to the base 2.
It is curved upward away from the upper surface, and a pedestal 42 for holding the guide rail 10 in the curved state is attached to the lower surface of this portion as shown in FIGS. 4 and 5. A pitching roll 44 is rotatably supported in the middle of this frame 42 by a support shaft 46, and a support pulley 48 is rotatably supported by a support shaft 50 at an end protruding from the other end of the guide rail 10. freely supported. Furthermore, the pitching roll 44 is attached to the guide rail 10 and the pedestal 42.
An opening 52 is formed at a location corresponding to .

A plate material 54 having rigidity is joined to the lower surface of the base body 2 at one end in the longitudinal direction, and a driving device 56 is attached to the upper surface.
is provided. This drive device 56 has a case 58 fixed to the base body 2. Inside this case 58, as shown in FIG. 4, there is provided a mounting plate 62 whose width dimension is shorter than that of the case 58 and whose both ends are bent into substantially L-shaped support pieces 60. A drive source 64 in which a speed reducer and a motor are integrated is attached to this mounting plate 62. This drive source 64
The output shaft 66 projects toward the outer surface of one of the support pieces 60. A first gear 68 and a first driving pulley 70 are fitted onto the output shaft 66 . Further, the mounting plate 62 is provided with a first mounting shaft 72 whose both ends are rotatably supported by the support piece 60. Both ends of this mounting shaft 72 protrude to the outer surface side of the support piece 60, and a second gear 74 is attached to one end of the mounting shaft 72.
and a second driving pulley paired with the first driving pulley 70.
A driving pulley 76 is fitted therein. The second gear 74 meshes with the first gear 68. A third gear 78 and a third driving pulley 80 are fitted to the other end of the first mounting shaft 72 . Also, the other support piece 60 of the mounting plate 62
A second mounting shaft 81 is rotatably provided. The third gear 7 is attached to this second mounting shaft 81.
8, and a fourth driving pulley 84 that is paired with the third driving pulley 80.
is fitted. Therefore, the output shaft 6
6 is rotationally driven, the first gear 68 and second gear 74 rotate in opposite directions, and the third gear 78 and fourth gear 82 rotate in opposite directions.
Note that the first to fourth gears rotate at the same number of rotations.

The first drive pulley 70 and the fourth drive pulley 84 are connected to one end of a pair of belts 86 formed in a band shape of a steel plate, stainless steel plate, cloth, rubber, etc. as a power transmission strip. are wound around each other with their ends fixed. This belt 86 is connected to the first and second belts as shown in FIG.
The drive pulleys 70 and 76 are passed through the upper passage 20 of the guide rail 10. The midway portion led out from the upper passage 20 is hung on a support pulley 48 provided on the pedestal 42. The running direction of the belt 86 is changed approximately 180 degrees by the support pulley 48, and then the belt 86 passes through the opening 52 formed in the guide rail 10 to the lower passage 22.
It is passed through. At the location of the opening 52, the running direction of the belt 86 is slightly changed by the pitching roll 44. The other end of the belt 86 led out from the lower passage 22 is wound around the second driving pulley 76 and the third driving pulley 80, respectively. Therefore,
A first driving pulley 70 and a second driving pulley 76 or a third driving pulley 8 are paired with each other.
When the zero and fourth drive pulleys 84 are rotated in opposite directions, the belt 86 is wound around one of the drive pulleys and is sent out from the other pulley by the length of the belt 86 . For example, in FIG. 5, the first driving pulley 70 is
When the second driving pulley 76 is rotated in the direction of the arrow Y, the portion of the belt 86 inserted into the upper passage 20 runs in the direction of the arrow Z.

A pair of holders 90 are provided between the pair of guide rails 10, as shown in FIG. 1, and spaced apart from each other at a predetermined interval along the longitudinal direction of the guide rail 10. This holder 90 is equipped with a hollow shaft 92 as shown in FIG. Both ends of the hollow shaft 92 are removably fitted into attachment holes 96 formed in the support 94. A screw shaft 98 is inserted through the hollow shaft 92 . Both ends of the threaded shaft 98 on which the male thread 100 is formed protrude from the bottom wall 102 of the mounting hole 96, and a female thread 104 is screwed into the male thread 100 via a washer 106. As shown in FIGS. 3 and 11, a pair of wheels 108 are rotatably provided on the support 94 via a support shaft 110. As shown in FIGS. This wheel 108 runs on the guide surface 24 of the guide rail 10. As shown in FIG. 3, one vertical side of a connecting member 112 having a substantially inverted T-shaped cross section is fixedly attached to one end of the support shaft 110. As shown in FIG. This connecting member 1
The other horizontal side of 12 is the upper passage 1 of the belt 86.
It is fixed to the part inserted through 4. That is, one vertical side of the connecting member 112 is led out from the gap between the pair of L-shaped pieces 18 forming the upper passage 20 and is fixed to the support shaft 110. Therefore, the holding body 90 is connected to the belt 86 by the connecting member 112, and is interlocked with the movement of the belt 86. Furthermore, the support shaft 11
A plate member 114 is attached to the other end of the guide rail 10, and the lower end of the plate member 114 is bent at a right angle and inserted into the locking portion 14 of the guide rail 10. Furthermore, four collars 116 are provided on the hollow shaft 92 in a state that they are rotatable and do not shift in the axial direction. A pine surge roller 118 is attached to each collar 116. This pine surge roller 118 is molded from a relatively hard elastic material such as rubber or synthetic resin, and has a large number of substantially hemispherical protrusions 120 protruding from its outer peripheral surface at predetermined intervals in the circumferential direction. . In addition, each color 11
A stopper 122 is provided on the outer peripheral surface of the collar 6 to prevent the pine surge roller 118 from shifting in the axial direction of the collar 116.

On the other hand, the running direction of the belt 86 is controlled by a control device 12 provided in the case 58 of the drive device 56.
Controlled by 4. This control device 124 includes a plate-shaped body 126 as shown in FIGS. 12 to 14. This disc-shaped body 126 is connected to the case 58.
The first mounting shaft 7 is pivotally supported on the mounting plate 62 inside.
2 by a set screw 128. Further, a spiral first guide groove 130 and a spiral second guide groove 132 are formed as guide portions on both side surfaces of the disc-shaped body 126, respectively. Each guide groove 130, 13
A part of the guide groove 130,1 has a larger guide groove than the other part.
The first step 134 and the second step 1 that make 32 shallower
36 are provided respectively. First step 1
34 is in the radial direction from the rotation center 0 of the plate-shaped body 126
The second step portion 136 is provided at the R ₁ position, and the second step portion 136 is provided at the R ₂ position. R ₁ is greater than R ₂ . Therefore, the first step 134 is the second step 136.
The guide groove is located radially outward by a plurality of turns of the guide groove. Further, the mounting plate 62 includes a plate-shaped body 12.
A pair of support pieces 138 are protruded near 6, and a support shaft 140 is provided on the support pieces 138.
This support shaft 140 has a frame 1 having a substantially C-shaped cross section.
42 is pivotally connected at one end. This frame 1
A band-shaped leaf spring 144 is provided on the outer surface of both sides of 42, respectively.
is provided with one end fixed. Leaf spring 14
A shaft-shaped body 146 is provided protrudingly from the other end of each of the two ends. This shaft-shaped body 146 projects from through holes 148 formed on both sides of the frame 142 by the biasing force of the leaf spring 144 to the inner surfaces of the both sides. Furthermore, a first limit switch 150 and a second limit switch 152 are provided on both outer surfaces of the frame 142 and are fixed to a plate member 154, respectively. These limit switches 152,
154 is actuated by these leaf springs 144 when the other end side of the leaf springs 144 is elastically deformed in a direction away from the outer surface of the frame 142. As shown in FIG.
6 to the first and second guide grooves 130 and 132, respectively.
is engaged with. When the disk-shaped body 126 rotates as described later, the shaft-shaped body 146 moves relatively in the guide grooves 130 and 132, and the shaft-shaped body 146 moves between the first step 134 and the second step 134. When displaced by step 136,
The leaf spring 144 is elastically deformed. Further, the limit switches 152 and 154 are connected to the drive device 56.
The rotation direction of the output shaft 66 of this drive source 64 is controlled. That is, if the first limit switch 152 is operated while the output shaft 66 is being rotated, for example, clockwise, the direction of rotation of the output shaft 66 is changed counterclockwise. Further, if the second limit switch 154 is operated while the output shaft 66 is being rotated counterclockwise, the rotation is converted clockwise.

On the other hand, on the upper surface of the base 2, a wall member 160 is provided on the outside of the pair of guide rails 10 and at one longitudinal end of the base 2, as shown in FIG. This wall member 160 is made of a bendable elastic material, such as urethane foam. Further, the base body 2 is covered with an exterior material 162 made of a cloth having relatively excellent abrasion resistance, such as canvas or nylon cloth, sewn into a bag shape.

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

Next, a case where the pine surgery device 1 having the above structure is used will be explained. First, the pine surge device 1 is placed on a pinerest 170 as shown in FIG. 16, and a user lies on the pinerest 170 facing upward. Then, since the base body 2 and guide rail 10 of the pine surgery device 1 are made of flexible materials, they bend in accordance with the uneven shape of the user's back surface. In this state, a switch box (not shown) is operated to activate the drive source 64 of the drive device 56. This drive source 64 operates and the output shaft 66
When rotates clockwise as shown by arrow X in Figure 5,
First driving pulley 70 and fourth driving pulley 8
4 rotates in the same direction, and the second driving pulley 76
and the third drive pulley 80 rotate in opposite directions. Therefore, the pair of belts 86 are connected to the first driving pulley 70 and the fourth driving pulley 84, respectively.
and the second driving pulley 76 and the third driving pulley 80 depending on the winding.
5, the portion of the belt 86 inserted into the upper passage 20 of the guide rail 10 runs in the direction shown by arrow Z in FIG. When the belt 86 runs in this way, the pair of holders 90 are linked to the running of the belt 86, so that the plurality of pine surge rollers 118 provided on the hollow shaft 92 of the holders 90 are connected to the inner surface of the exterior fabric 162. Upon contact, it runs while rotating in the direction shown by arrow S in FIG. 11, and its protrusion 120 hits the back of the user.

On the other hand, when the output shaft 66 rotates in the direction of arrow X,
The first mounting shaft 72 rotates in the direction of arrow Y, and the plate-shaped body 126 of the control device 124 is interlocked with the rotation.
When the plate-shaped body 126 rotates in the direction of arrow Y, the first and second guide grooves 130 and 132 of this plate-shaped body 126
The shaft-like bodies 146 engaged with the guide grooves 1
30 and 132, and the frame 142 rotates in the direction indicated by arrow T in FIG. One shaft-like body 146 is engaged with the first guide groove 130 by the rotation of the plate-like body 126.
is connected to the first guide groove 13 by the first step portion 134.
When the leaf spring 144 to which this shaft-shaped body 146 is attached is displaced in the direction of protruding from the first
As shown by the chain line in FIG. 4, it is elastically deformed to operate the first limit switch 152. Then, the rotation direction of the output shaft 66 of the drive source 64 is changed by the signal from the first limit switch 152, so that the running direction of the portion of the belt 86 inserted into the upper passage 20 is opposite to the direction of arrow Z. become the direction. Therefore, since the pair of holders 90 are interlocked with the movement of the belt 86, the user is pine-surged by the pine-surge roller 118. Further, at this time, the plate-like body 126 rotates in the opposite direction to that previously, that is, in the opposite direction to the arrow Y, so the frame 142 rotates in the opposite direction to the arrow T direction. Then, the other shaft-like body 146 engaged with the second guide groove 132
When the other leaf spring 144 to which this shaft-like body 146 is attached is displaced by the step portion 136 of the
As shown by the chain line in FIG. 4, it is elastically deformed to operate the second limit switch 154. Then, the second
Since the rotational direction of the output shaft 66 of the drive source 64 is changed by the signal from the limit switch 154, the running direction of the pair of holders 90 becomes the Z direction again.

In this way, the pair of holders 90 are connected to the first
The plate-shaped body 1 on which the limit switch 152 or the second limit switch 154 is operated.
It is driven back and forth over a distance corresponding to the rotation speed of 26.

By the way, the length of the belt 86 wound around one drive pulley and the length of the belt 86 fed out from the other drive pulley are such that the outer diameter of the pulley to be wound gradually increases, As the outer diameter dimensions gradually become smaller, they no longer match.
Then, tension is generated in the belt 86 according to the difference, and this tension is applied to the support pulley 48.
Since it is applied to the guide rail 10 via the frame 42, there is a risk that the guide rail 10 may warp. However, one end of the guide rail 10 is fixed to the base 2, and the other part is slidably held by a support 28, and is molded from synthetic resin, so the length is adjusted by the tension. Dimensions are reduced and will not warp. Therefore, the smooth running of the holding body 90 along the guide rail 10 is not impaired.

Furthermore, when the pine surge device 1 is not in use, it can be folded into three parts from the midway point in the longitudinal direction of the base body 2, as shown in FIGS. 17 and 18. That is, since the intermediate portions in the longitudinal direction of the base body 2 and the guide rail 10 are formed into the bendable first flexible portion 8 and the second flexible portion 40, respectively, the base body 2 and the guide rail 10 are It can be folded into three parts together with the wall member 160 provided on the top surface of the second part. Therefore, the length of the pine surge device can be reduced to one-third when not in use, making it convenient for storage.

Furthermore, only one longitudinal end of the guide rail 10 is fixed to the base body 2. Therefore, when the guide rail 10 is folded together with the base body 2, the other end side slides freely, so that the guide rail 10 is not bent or subjected to large bending stress and becomes difficult to bend.

Further, in this invention, the base body 2 does not necessarily have to be flexible over its entire length, but only needs to include the first flexible portion 8 that can be bent together with the guide rail 10.

As described above, in this invention, the guide rail is molded from synthetic resin, and only one end of the guide rail is fixed to the base body, and the parts other than the one end are supported by supports so as to be slidable along the longitudinal direction. Therefore, by winding the power transmission strip around one of a pair of drive pulleys that are driven to rotate in opposite directions, and letting it travel from the other drive pulley, the winding amount of the power transmission strip can be adjusted. Even if there is a difference in the amount of feed, and this difference generates more tension than necessary on the power transmission strip, the guide rail contracts in the longitudinal direction to absorb the tension. Therefore, there is no possibility that the guide rail is warped by the tension and the pine surge roller, which is interlocked with the running of the power transmission strip, cannot run smoothly.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, in which Fig. 1 is a plan view of the base with the exterior covering removed, Fig. 2 is an overall sectional view, Fig. 3 is an enlarged sectional view taken along the line of Fig. 2, and Fig. Figure 4 is a plan view showing the structure of the guide rail driving device, Figure 5 is a cross-sectional view taken along the line of Figure 4, Figures 6 and 7 are cross-sectional views of different parts of the guide rail, and Figure 8 is a cross-sectional view of the guide rail. The figure is a side view of the part where the first flexible part of the base body is formed, Figure 9 is a plan view of the part where the second flexible part of the guide rail is formed, and Figure 10 is along the line shown in Figure 9. 11 is a side view taken along line XI-XI in FIG. 3, FIG. 12 is a side view of the control device, and FIG. 13 is a side view taken along the line XI-XI in FIG.
14 is a side view of the frame of the control device, FIG. 15 is an enlarged sectional view showing a part of the guide groove provided in the plate-shaped body of the control device, and FIG. 16 is a state in use. FIG. 17 is an explanatory view of the folded state when not in use, and FIG. 18 is a sectional view of the first flexible portion of the base body at that time. 2... Base body, 10... Guide rail, 28...
Support device, 48...Support pulley, 70, 76, 8
0, 84... Drive pulley, 86... Belt (power transmission strip), 118... Pine surge roller.

Claims (1)

[Scope of utility model registration request] A base body, a pair of guide rails made of synthetic resin that are provided along the longitudinal direction of the base body and have only one end fixed to the base body, and a portion of the base body that is provided on the base body except for the one end of the guide rails in the longitudinal direction. a support that is slidably supported along the guide rail; a pair of driving pulleys that are integrally disposed with the base body on one end of the guide rail and are driven to rotate in opposite directions; and the other end of the guide rail. Both ends are wound around a support pulley provided integrally with the guide rail and the pair of drive pulleys, the middle part is stretched around the support pulley, and is wound around one of the drive pulleys. The present invention is characterized by comprising a power transmission strip that travels along the guide rail by being taken and sent out from the other driving pulley, and a pine surge roller that is connected to the power transmission member and interlocks with the travel. Pine surge device.