JPH1033611A - Massage chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize the thickness dimension or length dimension of a back body without reducing the performance by providing, on the back side, a driving means for reciprocating a driving belt along the passage of a guide rail by rotating a pair of driving pulleys provided on the back side of the back body. SOLUTION: In this massage chair, a driving belt 121 for driving a massage device 141 is inserted to the upper passage and lower passage of a guide rail 115 for guiding the traveling of the massage device 141. Namely, the driving belt 131 is integrated into the guide rail 115. The massage device 141 is provided on the front side of a back body 105, and a driving device 13 for driving the driving belt 121 is provided on the back side of the back body 104. Thus, the massage device 14 can be reciprocated substantially over the whole vertical length of the back body 105, and even when the waist part of a user is situated in the lower end part of the back body 105, this part can be massaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a massage chair for reciprocating a massage device provided on a back body along a vertical direction of the back body.

[0002]

2. Description of the Related Art A massage device for massaging a user's body is known. There is a so-called massage chair in which such a massage device is incorporated in the back of a chair so that the user can receive the massage on the back in a seated position.

As a conventional massage chair, Japanese Utility Model Publication No. 59
The one disclosed in Japanese Patent Publication No. -20252 is known. In the massage chair disclosed in this publication, a screw shaft is provided inside the backrest along the vertical direction. A lifting bracket is screwed onto the screw shaft. This lifting bracket is provided with a massage device, which can be moved up and down by being guided by a support provided in front of the screw shaft inside the backrest.

[0004] A drive source for rotating the screw shaft is provided below the backrest. When the screw shaft is rotationally driven by the driving source, the massage device is guided up and down by the support column.

By the way, according to the massage chair having such a structure, a screw shaft for vertically driving the massage device and a column for guiding the vertical movement of the massage device are provided inside the backrest. , Are provided in the thickness direction of the backrest. Therefore, the backrest portion may be thicker by the distance between the screw shaft and the backrest portion.

A drive source for rotating the screw shaft is provided at a lower portion in the backrest. If the drive source is provided in the lower portion of the backrest, the massage device cannot be moved to the lower portion of the backrest provided with the drive source.

Therefore, in order to be able to massage the waist of the user, the lower part of the backrest, on which the drive source is provided, must be lower than the upper surface of the seat. The length of the backrest must be increased.

[0008]

As described above, in the conventional massage chair, the screw shaft for driving the massage device and the column for guiding the traveling of the massage device are arranged in the front-back direction of the backrest. Since the configuration is provided at predetermined intervals, the backrest portion may be thick. In addition, since the drive source for driving the screw shaft is provided below the backrest, the massage device cannot be moved to that portion.

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a massage chair in which the thickness and length of the back body can be reduced without lowering the performance. Is to provide.

[0010]

According to a first aspect of the present invention, there is provided a massager having a seat body and a back body, wherein the back body is provided with a massage device which is reciprocally driven in a vertical direction. In a chair, two passages are separately formed and provided along the vertical direction of the back body, and a guide rail for guiding the massage device to move up and down;
The midway portion is engaged with an upper reversing pulley which is inserted over one of the passages and the other passage of the steering wheel and is provided at an upper portion of the back body, and the massage device provided on the upper surface side of the back body is connected. The two ends of the drive belt and the two ends of the drive belt, which are provided below the back body and extend downward from the lower end of the guide rail, are engaged with each other to reverse the directions of both ends of the drive belt. A pair of lower reversing pulleys to be driven, and a pair of driving pulleys provided on the rear side of the back body and having one end and the other end of the driving belt wound around the driving belt inverted by the lower reversing pulley, respectively. A driving means for rotating the driving pulleys to reciprocate the driving belt along the guide rail path.

According to the first aspect of the present invention, the guide rail is provided with a passage, and the drive belt for driving the massage device is inserted through the passage, so that the thickness of the back body can be reduced. In addition, since the driving means for driving the driving belt is provided on the back side of the back body, the massage device can run over substantially the entire length of the back body in the vertical direction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a massage chair 100 of the present invention.
0 is the base frame 1 supported by the support leg 102
03. This base frame 103 has a seat 1
04 is supported, and a back body 1
The lower end of 05 is rotatably connected. That is, the back body 105 is connected to the seat body 104 so that the angle can be adjusted. The base frame 103 is provided with armrests 106 located on both sides of the seat 104.

The back body 5 has a back frame 111. As shown in FIGS. 3 and 6, the back frame 111 is formed by connecting upper and lower ends of a pair of flat square pipes 112 spaced apart in parallel by connecting rods 113a and 113b, respectively. The upper connecting rod 113a is linear as shown in FIG. 5, and the lower connecting rod 113b is U-shaped as shown in FIG.
It is shaped like a letter.

As shown in FIG. 6, a thin base plate 114 is provided on the upper surfaces of the pair of square pipes 112, that is, the surface on the front side of the back body 105, and both ends in the width direction of the base plate 114. Guide rails 115 are provided along the vertical direction at portions corresponding to the upper surface of the square pipe 112.

The guide rail 115 has an upper passage 116 and a lower passage 117 which are separated from each other by, for example, synthetic resin as shown in FIG. A guide surface 118 is formed on one side. The upper passage 116 is formed by a pair of L-shaped pieces, and the center in the width direction is open.

The upper passage 116 of the guide rail 115
A drive belt 121 formed in a thin band shape by metal is inserted into the lower passage 117. That is, the drive belt 121 is inserted through the entire length of the upper passage 116 and the lower passage 117, and the guide rail 11
The middle part derived from the upper end of 5 is an upper reversing pulley 12.
2 is engaged. The upper reversing pulley 122 has a case.
And is rotatably supported in the housing 123. This case 1
As shown in FIG. 3, one end of an arm 124 is fixed to 23, and a pitch roller 125 for applying tension to the drive belt 121 inserted into the lower passage 117 is provided at the other end of the arm 124. It is provided rotatably.

Both ends of the drive belt 121 are led out from lower ends of an upper passage 116 and a lower passage 117 of the guide rail 115. One end of the drive belt 121 led out from the upper passage 116 is engaged with a first lower reversing pulley 126 provided at the lower end of the back body 105 as shown in FIGS. 4 (a) and 4 (b). The direction of the lever is changed to the upper direction of the back body 105.

The other end of the drive belt 121 led out from the lower passage 117 is the lower end of the back body 105, and the second lower inversion provided above the first lower inversion pulley 126. The direction is changed by engaging the pulley 127.

As shown in FIGS. 4A and 4B, a slide 128 is slidably inserted into the lower end of the square pipe 112 forming the back frame 111. The pair of reversing pulleys 126, 127
Are rotatably supported by support shafts 129, respectively. The slide body 128 includes a pair of reversing pulleys 126,
When the drive belt 121 is engaged with the square pipe 112, the drive belt 121 is prevented from being pulled out from the square pipe 112, and is urged in a pull-out direction by a spring 129 provided in the square pipe 112. As a result, the pair of lower reversing pulleys 126 and 127 are driven by the drive belt 12.
1 is given a tension.

Both ends of the drive belt 121 inverted by the lower reversing pulleys 126 and 127 are provided at the lower end of the back body 105 on the rear side.
It is led to 31. This driving device 131 is shown in FIGS.
It has a box 132 as shown in FIG. Support walls 133 are provided at both ends in the width direction of the box 132, respectively.
Is provided, and a drive motor 134 is disposed inside one support wall 133. The drive shaft 134a of the drive motor 134 passes through one end of one support wall 133, where a first gear 135a and a first drive pulley 136a are provided.
Are fitted integrally.

One support wall 133 and the other support wall 133
A first support shaft 137 is rotatably supported between the other ends of the first and second shafts. One support wall 133 of the first support shaft 137
A second gear 135b meshed with the first gear 135a and a second drive pulley 136b are fitted to one end protruding from the first gear 135a.

The other support wall 13 of the first support shaft 137
A third gear 135c and a third drive pulley 136c are fitted to the other end protruding from the third support wall 1c.
A second support shaft 138 is rotatably supported at one end of 33, and a fourth gear 135d and a fourth drive pulley 136d are fitted on the second support shaft 138. This fourth
The gear 135d is meshed with the third gear 135c.

Therefore, when the drive motor 134 is operated to rotate the drive shaft 134a, the rotation of the first gear 135a causes the rotation of the second to fourth gears 135b to 135b.
5d, the first to fourth drive pulleys 136a to 136d provided integrally with the respective gears are also rotationally driven. The first drive pulley 136a and the second drive pulley 136b are rotated in opposite directions, and the third drive pulley 136a is rotated in the opposite direction.
The wheel 136c rotates in the same direction as the second drive pulley 136b, and the fourth drive pulley 136d rotates in the opposite direction to the third drive pulley 136c.

A pair of lower reversing pulleys 126 and 127 which are led out from lower end portions of a pair of guide rails 115, respectively.
The one end of the drive belt 121 inverted by the first drive pulley 136a and the fourth drive pulley 136
The other ends are wound around the second drive pulley 136b and the third drive pulley 136c, respectively.

Therefore, the pair of drive pulleys wound around both ends of one drive belt 121 are driven to rotate in opposite directions to each other, so that the drive belt 121 rotates in the rotational direction of the drive pulleys. Accordingly, the guide rail 115 is driven to travel in the upper passage 116 and the lower passage 117 of the guide rail 115.

The driving device 131 is electrically controlled by a control device 139 provided at a portion above the driving device 131 on the back surface of the back body 105.

The pair of guide rails 115 is provided with a massage device 141 connected to the drive belt 121 so as to be freely movable. The massage device 141 has a frame 11. This frame 11 is shown in FIGS.
As shown in FIG. 2, a pair of side frames 12 having a hollow box shape having a triangular side shape is provided. The pair of side frames 12 are connected at the bottoms at both ends along the running direction by connecting shafts 13.

Guide rollers 14 running on the running surface 2a formed on the guide rail 115 are rotatably provided at both ends of the pair of connecting shafts 13, and a center plate having a rectangular plate shape is provided at an intermediate portion. -The frame 15 is the side frame 1
2 along the running direction.

As shown in FIG.
A holding member 15a is attached to a lower end of a middle part of the outer surface of the second member. An intermediate portion of the wire 16 is inserted and fixed to the holding member 15a. Both ends of the wire 16 are guided along the direction of the end of the side frame 12, and both ends are connected to the drive belt 121 via a connecting member 17, and the ends are connected to the connecting shaft 13. Connected and fixed.

Accordingly, the drive belt 121 is driven to travel, so that the drive belt 121
The system 11 is linked via a wire 16. That is, the frame 11 is driven to reciprocate along the guide rail 115.

As shown in FIG. 5, one side frame 1
An electric component box 21 is detachably attached to the outer surface of the second side frame 2, and a power box 22 is also detachably attached to the outer surface of the other side frame 12. Between the pair of side frames 12 of the frame 11, a first drive shaft 23 is rotatably mounted at a lower portion on one end side in the traveling direction, and a second drive shaft 24 is similarly rotated at an upper portion of the intermediate portion. It is erected freely.

As shown in FIG. 7, the first drive shaft 23 has a first portion 23a and a second portion 2 at an intermediate portion in the axial direction.
3b, and each portion is provided with a first eccentric shaft portion 24a and a second eccentric shaft portion 24b. Each of the eccentric shaft portions 24a and 24b has a phase of eccentricity of 1 by a joint 25 to which these tip portions can be fitted.
They are staggered by 80 degrees. The joint 25 is rotatably and swingably supported on the center frame 15 by a first spherical bearing 26.

Further, the eccentric shaft portions 24a and 24b are provided with a support portion 28 provided at the base end of an arm 27 having an L-shaped side surface by a second spherical bearing 29 so as to be rotatable and swingable. It is connected to.

A pair of arms 27 are provided symmetrically with respect to the center in the width direction of the frame 11, and a main mass roller 31 is rotatably provided at an intermediate portion and a tip portion, respectively. . That is, one arm 27 has two main masses.
The rollers 31 are provided at predetermined intervals along the traveling direction of the frame 11.

In the middle of the arm 27, a rectangular opening 32 is formed as shown in FIG.
Of the drive shaft 24 is inserted. An eccentric shaft 33 is provided on a portion of the second drive shaft 24 corresponding to the arm 27.
Are externally fitted and fixed. The eccentric shaft 33 has the second
An eccentric cam portion 34 eccentric to the axis of the drive shaft 24 and inclined at a predetermined angle, and a flange portion 35 is provided at one end of the eccentric cam portion 34.

A slider 36 made of metal is attached to the eccentric cam portion 34. The slider 36 has a rectangular top 36a in which a fitting hole 37 that is rotatably fitted to the eccentric cam portion 34 is formed. Side guides 36b are provided on both sides of the top 36a, and upper and lower sides are provided. Vertical guide 36c
Is provided.

On one side surface of the slider 36, there is provided a spacer 38 formed of a synthetic resin in a rectangular frame shape.
On the other side, a slider receiver 39 also made of a synthetic resin and formed in a rectangular frame shape is provided with one side joined to each other. An L-shaped groove is formed on one side surface of the slider receiver 39 to slidably hold the pair of side guides 36b. Upper and lower grooves 42 are formed.

A rectangular frame-shaped cover 43 is joined to the other side surface of the slider receiver 39. The upper and lower ends of the cover 43 are formed with an L-shaped cover 43a for covering the upper and lower end surfaces of the slider receiver 39 and the spacer 38. The joined spacer 38, slider receiver 39 and cover are formed. 4
Numeral 3 is fixed to one side surface of the arm 27 by a screw 44. As a result, the slider 36 is slidably held by the arm 27.

The second drive shaft 24 has a pair of center rollers 4 located on both sides of the center frame 15.
5, a pair of side rollers 46 located in the vicinity of the inner surface of each side frame 12, and a pair of auxiliary mass rolls accommodated in the accommodating portion 12a formed on the upper surface of the side frame 12. -Rollers 47 are provided rotatably.

The center roller 45 prevents the user's body, especially the neck, from hitting the center frame 15, and the side roller 46 prevents the user from hitting the inner edge of the side frame 12. Further, the auxiliary massaging machine
The taper 47 is formed in a tapered shape in which the outer peripheral surface is inclined inward toward the inside in the width direction of the frame 11, and massages the back surface of the user, and the body is formed by the tapered surface. It prevents the body from moving in the width direction and prevents the body from hitting the upper surface of the side frame 12.

The first drive shaft 23 and the second drive shaft 24
End protrudes into the power box 21. A first worm wheel 51 is fitted to the projecting end of the first drive shaft 23, and a second worm wheel is fitted to the projecting end of the second drive shaft 24.
A wheel 52 is fitted.

A drive motor 53 is accommodated in the power box 21. A first worm gear 55 meshed with the first worm wheel 51 and a second worm gear 55 meshed with the second worm wheel 52 are connected to the rotating shaft 54 of the drive motor 53. The worm gear 56 is fitted via a first one-way clutch 57 and a second one-way clutch 58, respectively. The rotation directions of the first one-way clutch 57 and the second one-way clutch 58 for transmitting the power of the rotating shaft 54 to the first and second worm gears 55 and 56 are reversed.

The rotating shaft 54 of the drive motor 53 can be rotated forward and reverse through a remote controller (not shown) connected to the electric box 21. When the rotation shaft 54 is rotated forward, the rotation is the first rotation.
Is transmitted to the first worm wheel 51 via the one-way clutch 57, so that the first drive shaft 23 is rotationally driven.

When the first drive shaft 23 is driven to rotate, the first eccentric shaft portion 24a and the second eccentric shaft portion 24b rotate eccentrically, and the arm 27 is linked to the eccentric rotation. In other words, the arm 27 moves in an arc with one end connected to the first drive shaft 23 as a fulcrum. Thereby, the arm 27
Main mass-roller 3 provided in the middle and the tip of the car
Since 1 moves up and down, the user has a tapping action.

When the arm 27 moves in an arc, the arm 2
7 with respect to the slider 36 provided in the middle of
Since the arm 27 slides relatively, even if the slider 36 provided integrally in the middle of the arm 27 is fitted on the eccentric cam portion 34 of the eccentric shaft 33, the slider 36
Does not prevent the movement of the arm 27.

On the other hand, when the rotation shaft 54 of the drive motor 53 is rotated in the reverse direction, the rotation is
Through the second worm gear 56 to the second worm wheel 52, the second drive shaft 24 is rotationally driven.

When the second drive shaft 24 is driven to rotate, the slider 36 externally fitted to the eccentric cam portion 34 of the eccentric shaft 33 fitted in the middle part slides with respect to the arm 27. However, it is linked to the eccentric motion and the tilting motion of the eccentric cam portion 34. The arm 27 has its base end inclined with respect to the second drive shaft 24 via a second spherical bearing 29.

Therefore, the main mass roller 31 attached to the pair of arms 27 swings in the running direction of the frame 11 and the vertical direction by the movement of the eccentric cam portion 34. It will give fir action to the user. The back body 105 is entirely covered with a bag-shaped cover (not shown).

According to the massage chair 100 having such a configuration, the drive belt 121 for driving the massage device 141 is provided at the upper passage of the guide rail 115 for guiding the travel of the massage device 141. 116 and lower passage 1
17 is inserted. That is, since the drive belts 121 are incorporated into the guide rails 115 and are integrated with each other, the thickness of the back body 105 can be reduced as compared with the case where they are separate.

In the massage device 141 provided on the front side of the back body 105, since the driving device 131 for driving the driving belt 121 is provided on the back side of the back body 105, the guide rail is provided. 115 can be provided over substantially the entire length of the back body 105 in the vertical direction.

Thus, the massage device 141
Can be reciprocated over substantially the entire length of the back body 105 in the vertical direction, so that the waist of the user
Even if it is located at the lower end of the, it can be massaged.

That is, since the entire length of the back body 105 in the vertical direction can be effectively used, the lower end of the back body 105 is rotatably connected to the rear end of the seat body 104 as shown in FIG. Even with the massage chair having the above-described configuration, the user can reliably massage the waist of the user by sitting on the seat body 104.

In other words, the driving device 131 is connected to the back body 1
05, the massage device 141 cannot run to the lower end of the back body 105, and the back body 105 is effectively used over its entire length. It is not necessary to make the dimensions longer than necessary.

The massage device 141 is connected to the drive belt 121.
, The drive belt 121 is elongated due to long-term use, and the drive belt 121 is slackened.
41 cannot be driven smoothly and reliably.

However, in the present invention, a pair of lower reversing pulleys 126 and 127 for reversing the drive belt 121 are biased at the lower end of the back body 105 so as to apply tension to the drive belt 121 by a spring 129. Provided. Therefore, even if the drive belt 121 is stretched, the pair of lower reversing pulleys 12 are moved in accordance with the stretch.
6, 127 are displaced by the biasing force of the spring 129, so that the tension of the drive belt 121 can be maintained constant by absorbing the extension of the drive belt 121.

In the first embodiment, by driving a pair of drive pulleys in a pair in the opposite direction, one of the pair of end portions of the drive belt is wound up and the other is sent out. I tried to drive the drive belt,
As shown in FIG. 13, both ends of the drive belt 121 are respectively connected to a pair of drive pulleys 136a (136d) and 136d.
6b (136c) in a different direction. In this case, the direction of the drive belt 121 wound around one drive pulley 136a (136d) is changed by the auxiliary pulley 151.

Further, each pair of drive pulleys 136a (1
When rotating 36d) and 136b (136c) in the same direction, instead of providing gears coaxially with these pulleys as in the first embodiment, a belt pulley (not shown) is provided and a pair of belt pulleys is provided. By stretching the belt 152 on the belt pulley, each pair of drive pulleys can be driven to rotate in the same direction.

[0058]

According to the first aspect of the present invention, a guide rail is provided on the back body of the massage chair along the vertical direction, a passage is provided in the guide rail, and the massager is provided in the passage. A drive means for passing the drive belt to which the device is connected and for driving the drive belt to travel is provided on the back side of the back body.

Therefore, by inserting the drive belt for driving the massage device into the guide rail passage and integrating them, the thickness of the back body can be reduced. In addition, since the driving device for driving the driving belt is provided on the back side of the back body, the massage device can run over substantially the entire length of the back body in the vertical direction. The length dimension of the back body can be made shorter than in the case where it is provided.

[Brief description of the drawings]

FIG. 1 is a side view of a massage chair according to a first embodiment of the present invention.

FIG. 2 is a front view of the schematic configuration of the back body.

FIG. 3 is an enlarged side view of the back body.

4A is a cross-sectional view of a lower end portion of a back body, and FIG. 4B is a cross-sectional view showing a mounting structure of a lower reversing pulley.

FIG. 5 is a plan view of the massage device.

FIG. 6 is a front view of the massage device partially sectioned in the same manner.

FIG. 7 is a longitudinal sectional view of the mounting structure of the first drive shaft and the arm.

FIG. 8 is a cross-sectional view of the arm mounting structure.

FIG. 9 is a sectional view taken along the line AA in FIG. 1;

FIG. 10 is a side view of the massage device viewed from the drive box side.

11A is a cross-sectional view of the eccentric shaft body along the axial direction, and FIG. 11B is a cross-sectional view of the eccentric shaft body in a direction intersecting the axial direction.

FIG. 12 is an exploded perspective view of the arm and a mounting structure for attaching a slider to the arm.

FIG. 13 is a cross-sectional view of a lower end portion of a back body showing a second embodiment of the present invention.

[Explanation of symbols]

 36a, 36b ... a pair of first and second drive pulleys 36c, 36d ... a pair of third and fourth drive pulleys 104 ... seat body 105 ... back body 115 ... guide rail 116 ... upper passage 117 lower passage 121 drive belt 122 upper reversing pulley 126, 127 lower reversing pulley 131 driving device 141 massage device

Claims (1)

[Claims] 1. A massage chair having a seat body and a back body, wherein the back body is provided with a massage device which is reciprocally driven in a vertical direction, wherein two passages are separately formed. A guide rail that is provided along the up-down direction of the back body and guides the up-and-down movement of the massage device; and is provided at an upper portion of the back body through one passage and the other passage of the guide rail. A drive belt to which the midway portion is engaged with the upper reversing pulley and to which the massage device provided on the upper surface of the back body is connected; and a guide rail provided at the lower portion of the back body. A pair of lower reversing pulleys, which are engaged with both ends of the drive belt extending downward from the lower end thereof and reverse the directions of both ends of the drive belt, are provided on the back side of the back body. One end and the other end of the drive belt inverted by the lower inversion pulley have a pair of drive pulleys wound respectively, and the drive pulley is rotated to drive the drive pulley. And a driving means for reciprocating the belt along the path of the guide rail.