JP4598479B2 - Massage machine - Google Patents

Description

  The present invention relates to a massage machine. More specifically, the present invention relates to a massage machine having an improved guide mechanism for guiding a machine body unit including a mechanism for driving a treatment element when the machine body unit is moved up and down in the backrest portion of the massage machine.

  Conventionally, as a massage machine of a type in which a machine body unit including a mechanism for driving a treatment element is moved up and down in the spine part, rollers attached to the machine body unit are disposed along the vertical direction of the spine part. A device that employs a configuration that travels in a pair of guide rails is known. In such a massage machine, noise is generated between the guide rail and the roller due to the fact that the treatment element is vigorously moved by a motor or the like when massaging or hitting the treatment element. There is a problem that the roller or the machine main unit is loose with respect to the rail, and in order to solve this problem, the present applicant has previously proposed a configuration in which the roller is pressed against the wall surface of the guide rail (patent). Reference 1).

FIG. 5 shows a front cross-sectional view of the support rail (guide rail) and massager (machine body unit) part of the massage machine described in Patent Document 1. The massager 40 includes a pair of support rails 41. A plurality of rotating wheels 42 are provided so as to correspond to each other. Of these rotating wheels, the upper and lower rotating wheels 42 a and 42 c incorporate elastic bodies 43 a and 43 c that are compressed inward in the left-right direction, whereby the upper and lower rotating wheels 42 a and 42 c are connected to the side wall 41 a of the support rail 41. Is pressed outward in the left-right direction. Further, the elastic body 43b incorporated in the central rotating wheel 42b is compressed in the front-rear direction, so that the central rotating wheel 42b is in pressure contact with the front wall of the support rail in the forward direction. Further, since the center lines of the upper and lower rotating wheels 42a and 42c are deviated backward with respect to the center line of the central rotating wheel 42b, the upper and lower rotating wheels 42a and 42c are located with respect to the rear wall of the support rail. It is pressed in the rear direction.
By disposing the rotating wheel in a pressure contact state in this way, it is possible to prevent the rotating wheel from rattling or vibrating in the left-right direction and the front-rear direction with respect to the support rail.

JP 2001-299852 A

  According to the massage machine described in Patent Document 1, although a certain effect can be obtained with respect to rattling and vibration prevention, the left and right tip portions 44 of the upper and lower rotating wheels 42a and 42c contact the side wall 41a of the support rail. And since it is only sliding on the said side wall 41a, in order to prevent resistance becoming large, it is necessary to apply | coat grease on a support rail. Further, during use, the grease at the contact portion between the tip 44 and the side wall 41a may be removed, resulting in increased resistance and abnormal noise.

  The present invention has been made to solve such problems, and provides a massage machine that eliminates the need for applying grease and can smoothly lift and lower the machine body unit without generating abnormal noise. The purpose is that.

The massage machine of the present invention includes at least a seat portion, a spine portion provided on the back side of the seat portion, a machine body unit provided in a freely movable manner in the spine portion, and an ascending / descending operation of the machine body unit A massage machine having a guide mechanism for guiding
The guide mechanism is disposed along the vertical direction of the backrest portion on both left and right sides of the machine body unit, and includes a side wall, a front wall protruding inward in the left and right direction from the front end side of the side wall, and the side wall A guide rail having a substantially U-shaped cross-section composed of a rear wall protruding inward in the left-right direction from the rear end side, and a roller provided in a frame constituting the machine body unit and running in a groove of the guide rail A first roller that is provided near the upper and lower ends of the machine body unit, and whose rolling surface is in pressure contact with the inner surface of the rear wall of the guide rail in the rear direction; A second roller provided between the first rollers, the rolling surface of which is pressed forward against the inner surface of the front wall of the guide rail; and the rolling surface of the inner surface of the side wall of the guide rail Against Do and a third roller which is pressed against the Ri,
An interval between the upper first roller and the second roller is larger than an interval between the second roller and the lower first roller;
A pinion disposed at a lower portion of the machine main body unit is engaged with a rack provided along the groove of the guide rail to raise and lower the machine main body unit .

In the guide mechanism according to the present invention, the rolling surface of the first roller is pressed against the inner surface of the rear wall of the guide rail in the rear direction, and the rolling surface of the second roller is pressed against the inner surface of the front wall of the guide rail. Since it is pressed in the forward direction, it is possible to prevent backlash in the front-rear direction of the machine body unit. More specifically, since a load (user weight, etc.) is always applied to the inner side surface of the rear wall of the guide rail, it is more stable when the first roller is pressed in the rearward direction at two locations, upper and lower. The machine body unit can be lifted and lowered more smoothly. In addition, when the kneading or hitting operation is performed, the machine body unit is applied not only to the left and right but also to the front and back, so by providing a second roller and pressing it forward, it is possible to suppress back and forth backlash. it can. Furthermore, since the rolling surface of the third roller is in pressure contact with the inner side surface of the side wall of the guide rail, it is possible to prevent the machine body unit from rattling in the left-right direction. And since it is in contact with all surfaces (front walls, rear walls and side walls of the guide rail) in a “rolling” state, it is not necessary to apply grease, and it is smaller than the sliding resistance. Since only rolling resistance is generated, no abnormal noise is generated, and the machine body unit can be raised and lowered smoothly. Further, the distance between the upper first roller and the second roller is made larger than the distance between the second roller and the lower first roller, and a pinion disposed at the lower part of the machine body unit is provided with a guide rail. By engaging with a rack provided along the groove, the machine body unit is provided so as to be lifted and lowered, so that the blur on the lower side of the machine body unit can be further reduced. As a result, the pinion shaft disposed in the lower part of the machine body unit is less likely to shake, and the pinion firmly meshes with the rack, so that the machine body unit can be raised and lowered more smoothly.

It is preferable that the third roller is provided near the upper and lower ends of the machine body unit and closer to the center than the first roller. In a massage machine, the user often takes a posture leaning against the backrest, and the load acting on the machine main unit is the largest load that presses the machine main unit back in such a case. Become. By arranging the first rollers responsible for such a rear load at the four corners of the machine body unit as much as possible, the machine body unit can be kept in a more stable state. Thereby, the raising / lowering operation | movement of a machine main body unit can be performed more smoothly .

  According to the massage machine of the present invention, it is not necessary to apply grease, and the machine body unit can be raised and lowered smoothly without generating abnormal noise.

Hereinafter, embodiments of the massage machine of the present invention will be described in detail with reference to the accompanying drawings. In each drawing, in order to make it easy to see a specific part or part, illustration of other parts may be omitted.
FIG. 1 is an overall perspective view of a massage machine according to an embodiment of the present invention. The massage machine 1 is provided on a seat 3 supported by a leg 2 and on the rear side of the seat 3. The backrest part 4, the footrest 5 provided in the front lower side of the seat part 3, the armrest part 6 provided in the right and left sides of the seat part 3, and the support part 7 attached to one armrest part 6 are provided. I have. A controller 8 is detachably attached to the support portion 7, and the backrest portion 4 can be reclined with respect to the seat portion 3. In this specification, the width direction of the spine 4 is referred to as “left-right direction”, the height direction is referred to as “vertical direction”, and the depth direction is referred to as “front-rear direction”, and the spine 4 is viewed from the front. The left side is called “left side” and the right side is called “right side”.

  Inside the spine 4, a machine body unit 10 including a massage unit including a treatment element 9 that performs a “prize” or “slap” operation is incorporated. The machine body unit 10 is provided so as to be movable up and down along a guide rail 30 having a pair of left and right guide grooves 30 a inside the backrest portion 4. The machine body unit 10 includes an advancing / retreating motor 31 for moving the massage unit back and forth, an elevating motor 32 for moving the machine body unit 10 up and down along the guide rail 30, and a hitting operation for the treatment element 9. The striking motor 33 and the squeezing motor 34 for squeezing the treatment element 9 are provided. The raising / lowering motor 32 has its output shaft arranged along the front-rear direction below the right side of the machine body unit 10. The hitting motor 33, which is a component of the massage unit, has an output shaft arranged in the left and right direction in the lower center of the massage unit, and the massage motor 34 has an output on the right side slightly above. The axis | shaft is arrange | positioned along the up-down direction. The outputs of the advancing / retreating motor 31, the raising / lowering motor 32, the tapping motor 33, and the kneading motor 34 are transmitted through power transmission means such as belts 35 and 36, pulleys, worm gears and the like as shown in FIGS. Transmitted to a predetermined site. And the output of the raising / lowering motor 32 is transmitted to the pinion which meshes with the rack provided along the said guide groove 30a, and raises / lowers the machine main body unit 10. Further, the outputs of the tapping motor 33 and the kneading motor 34 are converted into eccentric rotation and swinging by an eccentric pulley, an eccentric link, and the like, and the massaging operation such as kneading and tapping is performed on the treatment element 9. As such a mechanism for raising / lowering, rubbing and striking, a conventionally used mechanism can be adopted as appropriate, and detailed description thereof will be omitted.

  A feature of the present invention is that a guide rail 30 having a substantially U-shaped cross-section disposed along the vertical direction of the spine 4 on both sides of the machine body unit 10 in the left-right direction, and a groove 30 a of the guide rail 30. In the guide mechanism G composed of the rollers running inside, the rollers that are pressed in the front-rear direction against the inner surface of the guide rail 30 and the rollers that are pressed in the left-right direction are used as the rollers. is there.

Next, the guide mechanism G will be described.
As shown in FIG. 4, the guide rail 30 has a substantially U-shaped cross section, a side wall 30b, a front wall 30c projecting inward in the left-right direction from the front end side of the side wall 30b, and the side wall 30b. The rear wall 30d protrudes inward in the left-right direction from the rear end side. As shown in FIG. 1, the guide rails 30 are disposed on both left and right sides of the machine body unit 10 so that the open sides thereof face each other.

  The roller in the present embodiment is composed of three types of rollers. That is, the first roller 11 provided in the vicinity of the upper and lower ends of the machine body unit 10, the second roller 12 provided between the first rollers 11, the vicinity of the upper and lower ends of the machine body unit 10, and the The third roller 13 is provided closer to the center than the first roller 11. In the present embodiment, four first rollers 11 on the upper, lower, left and right sides of the machine body unit 10, four third rollers 13 on the upper, lower, left and right sides, and two second rollers on the left and right near the center of the machine body unit. A total of ten rollers are employed.

  The first roller 11, the second roller 12, and the third roller 13 are arranged on shafts erected on wing portions 14 a, 14 b, and 14 c formed on both left and right edges of the frame 14 constituting the machine body unit 10. Each is pivotally attached. Each of the rollers 11, 12, and 13 includes a roller main body 11a, 12a, and 13a formed of a short cylindrical body in which a hole through which the shaft is inserted is formed in the center, and an annular cushion mounted on the outer periphery of the roller main body. The body 11b, 12b, 13b is provided. In the present embodiment, each of the rollers 11, 12, and 13 has the same shape and dimensions, which facilitates assembly and facilitates component management. Moreover, since the same thing should just be produced, cost reduction including a mold allowance can be aimed at.

  The roller bodies 11a, 12a, and 13a can be made of a synthetic resin excellent in slidability and wear resistance, such as POM resin, for example, and can rotate around the shaft stably over a long period of time. Can do. Moreover, the cushion bodies 11b, 12b, and 13b can be made of, for example, a rubber material such as urethane rubber, thereby absorbing vibrations and more effectively preventing abnormal noise.

  In the first roller 11 and the second roller 12, the rolling surface of the first roller 11 is pressed against the inner surface of the rear wall 30d of the guide rail 30 in the backward direction, while the second roller 12 The rolling surface is disposed in the guide rail 30 such that the rolling surface is in pressure contact with the inner surface of the front wall of the guide rail in the forward direction. The third roller 13 is disposed in the guide rail 30 so that the rolling surface of the third roller 13 is pressed outward against the inner surface of the side wall 30b of the guide rail 30. ing. For example, the rollers 11b, 12b, and 13b may be placed in the groove 30a of the guide rail 30 in a state of being slightly elastically deformed, or may be inserted through the shafts of the rollers. The holes formed in the wing portions 14a, 14b, and 14c can be formed as slits or long holes, and the positions of the respective axes can be adjusted, or the rollers can be eccentric.

  In this way, the rolling surface of the first roller 11 is pressed against the inner surface of the rear wall 30d of the guide rail 30 in the rearward direction, and the rolling surface of the second roller 12 is in contact with the front wall 30c of the guide rail 30. Since it is press-contacted to the inner surface in the forward direction, the back-and-forth of the machine body unit 10 can be prevented. More specifically, since a load (user weight, etc.) is always applied to the inner side surface of the rear wall 30d of the guide rail 30, it is more preferable to press the first roller 11 in the rearward direction at two locations, upper and lower. The machine body unit 10 can be moved up and down more smoothly. Further, when the kneading or hitting operation is performed, the machine body unit 10 is applied with force not only in the right and left direction but also in the front and rear direction. be able to. Furthermore, since the rolling surfaces of the left and right third rollers 13 are respectively pressed outward with respect to the inner side surface of the side wall 30b of the guide rail 30, it is possible to prevent the machine body unit from rattling in the left-right direction. And, since the roller is in contact with all the surfaces (the inner surfaces of the front wall, the rear wall and the side walls of the guide rail) in a “rolling” state, it is not necessary to apply grease as in the prior art. Further, since only a rolling resistance smaller than the sliding resistance is generated, the machine body unit 10 can be raised and lowered smoothly without generating abnormal noise.

  In the present embodiment, the third roller 13 is disposed near the upper and lower ends of the machine body unit 10 and closer to the center than the first roller 11. In the massage machine 1, the user often takes a posture leaning against the backrest, and the load acting on the machine body unit 10 is the load that presses the machine body unit 10 rearward in such a case. It will be big. By disposing the first roller 11 responsible for such a rear load at the four corners of the machine body unit 10 as much as possible, the machine body unit 10 can be kept in a more stable state. 10 lifting and lowering operations can be performed more smoothly.

In the present embodiment, two third rollers 13 for guiding the movement of the machine body unit 10 in the left-right direction are provided on both sides of the machine body unit 10 in the left-right direction. It is also possible to arrange one piece at a time, and to place only one piece on the other side near the center in the vertical direction. In this case, the stability in the left-right direction, particularly when only one load is applied to the machine main body unit, is compared to the case where two are provided on both sides in the left-right direction of the machine main body unit 10. Although the stability is slightly inferior, the number of parts can be omitted. As a result, the assembling operation can be simplified and the cost can be reduced.
The distance between the upper first roller 11 and the second roller 12 (the distance along the longitudinal direction of the guide rail 30) and the distance between the second roller 12 and the lower first roller 11 are the same. The former (the distance between the upper first roller 11 and the second roller 12) is made larger than the latter (for example, the ratio of the former to the latter is about 1.3: 1). ), It is possible to further reduce the blur on the lower side of the machine body unit 10. As a result, the pinion shaft disposed in the lower part of the machine body unit 10 is less likely to shake, and the pinion firmly meshes with the rack, so that the machine body unit 10 can be raised and lowered more smoothly. However, if the second roller 12 is positioned too low, the upper blur of the machine body unit 10 increases, so the ratio between the two is preferably about 1.3: 1 as described above.
Furthermore, in the embodiment described above, the machine body unit 10 is lifted and lowered using a rack and a pinion. However, the present invention is not limited to such means. For example, a mechanism including a feed screw and a piece, a fluid A pressure cylinder or the like can also be used.

It is a whole perspective view of one embodiment of a massage machine of the present invention. It is a front perspective view of an example of a machine body unit in a massage machine of the present invention. FIG. 3 is a side view of the machine body unit shown in FIG. 2. It is a perspective explanatory view of the guide mechanism in the present invention. It is front sectional drawing of the support rail (guide rail) and massage device (machine main body unit) part in the conventional massage machine.

Explanation of symbols

1 massage machine 4 backrest 9 treatment element 10 machine body unit 11 first roller 12 second roller 13 third roller 30 guide rail 30b side wall 30c front wall 30d rear wall

Claims (2)

At least a seat part, a spine part provided on the back side of the seat part, a machine body unit provided in the spine part so as to be movable up and down, and a guide mechanism for guiding the raising and lowering operation of the machine body unit A massage machine provided,
The guide mechanism is disposed along the vertical direction of the backrest portion on both left and right sides of the machine body unit, and includes a side wall, a front wall protruding inward in the left and right direction from the front end side of the side wall, and the side wall A guide rail having a substantially U-shaped cross-section composed of a rear wall protruding inward in the left-right direction from the rear end side, and a roller provided in a frame constituting the machine body unit and running in a groove of the guide rail Configured, and
The roller is provided in the vicinity of the upper and lower ends of the machine body unit, and its rolling surface is in pressure contact with the inner surface of the rear wall of the guide rail in the rearward direction, and the first roller. A second roller having a rolling surface pressed forward against the inner side surface of the front wall of the guide rail, and a rolling surface outward of the inner side surface of the side wall of the guide rail. Ri Do and a pressed third roller,
An interval between the upper first roller and the second roller is larger than an interval between the second roller and the lower first roller;
A massage machine, wherein a pinion disposed at a lower portion of a machine body unit meshes with a rack provided along a groove of the guide rail to raise and lower the machine body unit . The massage machine according to claim 1, wherein the third roller is provided near the upper and lower ends of the machine body unit and closer to the center than the first roller.

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