JP2009172312A - Massager - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To drive a treater toward a human body side by a compact mechanism and to reduce components which are not necessary for the movement of the treater. <P>SOLUTION: This massager is provided with a driving mechanism for changing the position of the treater 1 forward, backward, upward, downward, rightward, and leftward. The driving mechanism for changing the position of the treater in front and back direction being the direction of pressing the human body is provided with a link mechanism composed of a fixed shaft 11, a driven link 2 rotatably supported by the fixed shaft, a direct acting shaft 30, a driving link 3 supported rotatably by the direct acting shaft, and a shaft 31 for connecting the driven link and the driving link. The arm 4 provided with the treater is connected to the driving link 3 or the driven link 2. If the operating space of the direct acting shaft for moving the driving link is secured, the position in the front and back direction of the treater can be changed while upward and downward displacement is small. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a massage machine, and more particularly to a drive mechanism that drives a treatment element that contacts the human body toward the human body.

  Various types of massage machines have been provided for the treatment element to perform three-dimensional kneading massage movements. In recent years, the above three-dimensional movement has been divided into three vertical movements, up, down, left, and right. What was realized by combining them is also provided.

  Here, even in the case where the three-dimensional movement can be obtained by a single paddle drive unit, in order to be able to adjust the strength of the massage, a treatment element is provided separately from the paddle drive unit. Is provided with a drive mechanism that can be driven toward the human body side. This drive mechanism can use the same structure as the drive part which drives the treatment element in the thing which combined the said 3 axis | shaft separate motion toward the human body side.

  Here, as a drive mechanism for driving the treatment element toward the human body side, an air cell that expands and contracts is used (refer to Patent Document 1), and a feed nut is screwed into a forward screw portion and a reverse screw portion of the screw shaft, respectively. Combined, the axial movement of the double feed nut due to the rotation of the screw shaft is changed by the link to move the treatment element in the direction perpendicular to the screw shaft (see Patent Documents 2 and 3), treatment around the shaft There exists what moves a treatment element by rotating the arm which provides a child (refer to patent documents 4).

However, it is difficult to accurately control the position of the treatment element using an air cell. When the feed nut is screwed into the forward thread part and the reverse thread part of the screw shaft, a long screw shaft is required, and a moving space for the double feed nut must be secured. End up. Furthermore, in the case of moving the treatment element by rotating the treatment element around the axis, the movement locus of the treatment element has a component other than the original movement (for example, up and down movement) in order to draw an arc. If the treatment element tries to increase the force of pushing the human body while the child is in contact with a certain point on the human body, a movement (vertical movement) that cancels the movement of other components must be added separately. In addition, the control becomes complicated, and the up and down movable range must be further increased so as to ensure the movement for the above correction.
JP 09-271499 A JP 2001-204778 A Japanese Patent No. 3981593 JP 2006-34635 A

  The present invention has been invented in view of the above-described conventional problems, and it is possible to drive the treatment element toward the human body with a compact mechanism, and in addition, components unnecessary for the movement of the treatment element It is an object of the present invention to provide a massage machine that can be reduced.

  In order to solve the above problems, the massage machine according to the present invention includes a drive mechanism that changes the position of the treatment element in the front-rear, up-down, left-right direction, and changes the position of the treatment element in the front-rear direction, which is the direction of pressing the human body The driving mechanism includes a fixed shaft, a driven link rotatably supported by the fixed shaft, a linearly moving shaft, a driving link rotatably supported by the linearly driven shaft, and the driven A link mechanism comprising a link and a shaft connecting the driving link is provided, and an arm having a treatment element is connected to the driving link or the driven link, and the treatment element is moved back and forth by the movement of the linearly moving shaft. It is characterized in that it changes the position of the direction.

  One of the link mechanisms is a driven link supported by a fixed shaft, and the position of the treatment element in the front-rear direction can be changed by securing a space for the linearly moving shaft to move the driving link. In addition, since the change in the position in the front-rear direction can reduce the vertical displacement, the treatment element can be appropriately driven in the front-rear direction while being compact.

  At this time, it is advantageous for downsizing the arm to move integrally with the driving link, and it is possible to reduce the vertical displacement of the treatment element when the treatment element is moved in the front-rear direction. Accordingly, it is almost unnecessary to increase the vertical movable range in order to compensate for the vertical displacement, and this is also advantageous for downsizing.

  In addition, the fixed shaft is located on the extension line in the linear motion direction of the linear motion shaft, and the length from the shaft connecting the drive link and the driven link to the treatment element is the length of the drive link and the follower link. If it is equal to the length, it is possible to change the position of the treatment element in the front-rear direction without any vertical displacement.

  If the treatment element is positioned closer to the fixed axis than the extension line of the line connecting the linearly moving axis and the axis connecting the driving link and the driven link, the linearly moving axis is moved. The amount of movement of the treatment element can be increased compared to the amount.

  The link mechanism in the drive mechanism is preferably provided on the side of the portion where the treatment element and the arm are arranged. The entire thickness in the front-rear direction can be reduced.

  A drive mechanism that drives the treatment element in the left-right width direction is provided, and a guide shaft that guides the movement in the left-right direction in the drive mechanism is a shaft that connects the linearly moving shaft or the driven link and the driving link, or is fixed A drive mechanism that also serves as a shaft and drives the treatment element in the up-and-down direction, and a guide member that moves in the up-and-down direction in the drive mechanism also serves as a linear motion guide for the linearly-moving shaft, and further moves the treatment element up and down When the drive shaft in the drive mechanism that drives in the direction also serves as the fixed shaft, the number of parts can be reduced and it is advantageous for downsizing.

  In the present invention, the driven link supported by the fixed shaft and the driving link moving by the linearly moving shaft are connected by the shaft, and the arm provided with the treatment element is connected to the driving link or the driven link. If the operating space of the above-mentioned linearly moving shaft is secured, the position of the treatment element can be changed in the front-rear direction. The operating space that must be secured is small, and the mechanism is also compact. The movement in the front-rear direction of the treatment element that can be obtained by moving the driving link and the driven link on the linearly moving shaft is small because the vertical displacement is small. However, it is possible to appropriately drive the treatment element in the front-rear direction.

  Hereinafter, the present invention will be described based on an embodiment shown in the accompanying drawings. FIG. 2 shows a massage mechanism built in the backrest of the chair and self-propelled in the backrest of the chair. Direction, Y is the width direction of the backrest, X is the front-back direction of the backrest, and the treatment element 1 is driven toward the human body side by being driven in the X direction.

  The massage mechanism is provided with a frame 10 having a U-shaped horizontal cross section, and shafts 11 and 12 are installed on the top and bottom of the frame 10, respectively, and rollers 13 are idled at both ends of the shafts 11 and 12, respectively. Pinions 14 are attached to both ends of the shaft 11 that is freely arranged and further driven to rotate about its axis by a motor 21 that can rotate forward and backward.

  Each of the rollers 13 is located in a guide groove 22 (see FIG. 10) in a guide frame 20 arranged in the backrest of the chair, and the pinion 14 meshes with a rack 23 provided along the guide groove 22. As the shaft 21 is driven to rotate by the motor 21, it moves in the vertical Z direction.

  Further, the frame 10 is provided with a screw shaft 15 whose axial direction is the vertical Z direction and a pair of left and right guide shafts 17 as shown in FIG. The screw shaft 15 is driven to rotate about its axis by a motor 24 that can rotate forward and backward. A feed nut 18 provided on the movable bearing portion 16 is screwed into the screw shaft 15. A slider 19 provided on the movable bearing portion 16 is engaged so as to be slidable in the axial direction. In the figure, reference numeral 40 denotes a bearing for supporting the guide shaft 17.

  Then, the other ends of the driven links 2 and 2 whose one ends are rotatably connected by the shaft 11 and the driving links 3 and 3 whose one ends are rotatably connected to the movable bearing portion 16 by the shaft 30. Are connected by a shaft 31. A width feed screw 33 and the shafts 30 and 31 are installed between a pair of left and right driving links 3 and 3 connected by a connecting shaft 33.

  The treatment element 1 is provided at one end of the arm 4. Here, the arm 4 includes a feed nut 34 screwed to the width feed screw 33 and a slider 35 slidably engaged with the shafts 30 and 31, and only one is shown in the figure. However, in reality, a pair of arms 4 and 4 are arranged on the left and right, the feed nut 34 of one arm 4 is screwed into the positive thread portion of the width feed screw 33, and the feed nut 34 of the other arm 4 is wide. The feed screw 33 is screwed into the reverse thread portion.

  For this reason, when the width feed screw 33 is rotated around the axis by a forward / reversely rotatable width driving motor 29 disposed between the pair of left and right driving links 3, 3, the pair of left and right arms 4, 4 (treatment The children 1, 1) change their positions in the opposite directions in the width Y direction. FIG. 9 shows a state in which the treatment element 1 is moved to the outermost side and the interval between the left and right treatment elements 1 and 1 is maximized.

  The movement of the treatment element 1 in the front-rear X direction is performed by the rotation of the screw shaft 15 described above. If the screw shaft 15 is rotated, the aforementioned movable bearing portion 16 moves in the vertical Z direction, which is the axial direction of the screw shaft 15, but the movable bearing portion 16 and the driving link 3 are connected by the shaft 30. At the same time, since the driving link 3 is connected to the driven link 2 by the shaft 31, the driving link 30 rotates around the shaft 30 while changing the position of the shaft 30. This rotation changes the position of the shaft 31 in the front-rear X direction.

  On the other hand, since the arm 4 provided with the treatment element 1 is connected to the width feed screw 33 and the shafts 30 and 31 installed between the driving links 3 and 3, the arm 4 is also the same as the driving links 3 and 3. It moves and changes the position of the treatment elements 1 and 1 to the front-back X direction. The movement of the treatment elements 1 and 1 is substantially linear in the front-rear X direction as shown in FIG. 4, depending on the lengths of the driving link 3, the driven link 2, and the arm 4.

  In particular, as shown in FIG. 5, the shaft 11 is positioned on an extension line in the moving direction of the shaft 30, and the length between the shafts 30 and 31 (the length of the driving link 3) a and the length between the shafts 11 and 31. When the length (length of the follower link 2) b and the distance c from the shaft 31 to the treatment element 1 are equal (a = b = c), the treatment element 1 moves in a completely straight line in the front-rear X direction. .

  In this massage machine, the treatment element 1 is made to perform three-dimensional movement such as fir massage by combining individual movements in the three-axis X, Y, and Z directions.

  Here, the screw shaft 16 and the feed nut 18 are used as the linear motion mechanism for the shaft 30 for moving the driving link 3, but a rack and pinion mechanism or the like may be used as the linear motion mechanism.

  In the above example, the arm 4 provided with the treatment element 1 performs an integral movement with the driving link 3. However, as shown in FIG. 5, the arm 4 performs the same movement as the driven link 2. You may make it perform.

  In addition, in the case where the arm 4 provided with the treatment element 1 performs the same movement as the driving link 3, the treatment is performed more than the extension line of the driving link 3 (strictly, the extension line of the line connecting the shafts 30 and 31). When the arm 4 is formed so that the child 1 is on the shaft 11 side, the movement of the treatment element 1 in the front-rear X direction is slightly inclined as shown in FIG. This means that even if the movement in the vertical direction Z does not coincide with the vertical direction of the human body, the movement in the front-rear X direction perpendicular to the back of the human body can be obtained by adjusting the angle α in the figure. Moreover, the movement amount of the treatment element 1 with respect to the movement amount of the shaft 30 can be increased.

  By the way, the link mechanism ML constituted by the driven link 2 and the drive link 3 etc. is located on the outer side in the left-right direction of the treatment mechanism MA constituted by the treatment element 1, the arm 4, etc., as is clear from FIG. 8. For this reason, the thickness in the front-rear direction of the entire massage mechanism can be reduced.

  In the above-described embodiment, the shaft 11 that supports one end of the driven link 2 also serves as a vertical traveling shaft, the shaft 31 that connects the driven link 2 and the driving link 3, and one end of the driving link 3 is moved. For example, the shaft 30 serving as a guide shaft when the treatment element 1 is driven in the width Y direction contributes to the reduction of the number of parts and the compactness.

  As shown in FIG. 10, if the rollers 13 are provided at both ends of the shaft 30, the guide frame 20 serving as a guide for moving the entire massage mechanism up and down moves the shaft 30 in the link mechanism ML up and down. Therefore, the above-described guide shaft 17 is not required, and the number of parts can be further reduced and the size can be reduced.

An example of embodiment of this invention is shown, (a) (b) is a side view. It is a perspective view same as the above. It is a front view in the state where a part of mechanism same as the above was omitted. It is operation | movement explanatory drawing same as the above. It is operation | movement explanatory drawing of the other example same as the above. It is operation | movement explanatory drawing of another example same as the above. It is operation | movement explanatory drawing of another example same as the above. It is a front view same as the above. It is a perspective view same as the above. It is a perspective view including the guide frame for up-and-down running same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Treatment element 2 Drive link 3 Drive link 4 Arm 11 axis 30 axis 31 axis

Claims (8)

  In a massage machine equipped with a drive mechanism that changes the position of the treatment element back and forth, up, down, left and right, the drive mechanism that changes the position of the treatment element in the front-rear direction, which is the direction of pressing the human body, includes a fixed shaft and this fixed A link comprising a driven link rotatably supported by a shaft, a linearly moving shaft, a driving link rotatably supported by a linearly moving shaft, and a shaft connecting the driven link and the driving link. The mechanism is provided, and an arm provided with a treatment element is connected to the driving link or the follower link, and the treatment element changes the position in the front-rear direction by the movement of the linearly moving shaft. Massage machine.   The massage machine according to claim 1, wherein the arm moves integrally with the driving link.   The fixed shaft is located on the extension line in the linear motion direction of the shaft that linearly moves, and the length from the shaft connecting the driving link and the driven link to the treatment element is the length of the driving link and the length of the driven link. The massage machine according to claim 2, wherein the massage machines are equal.   The treatment element is located closer to the fixed axis than an extension line of a line connecting the linearly moving shaft and a shaft connecting the driving link and the driven link. Or the massage machine of 3.   The said link mechanism in a drive mechanism is provided in the side of the part by which a treatment element and an arm are arrange | positioned, The massage machine of any one of Claims 1-4 characterized by the above-mentioned.   A drive mechanism that drives the treatment element in the left-right width direction is provided, and a guide shaft that guides the movement in the left-right direction in the drive mechanism is a shaft that connects the linearly moving shaft or the driven link and the driving link, or is fixed The massage machine according to any one of claims 1 to 5, wherein the massage machine also serves as a shaft.   7. A driving mechanism for driving the treatment element in the vertical direction, and a guide member for moving in the vertical direction in the driving mechanism also serves as a linear motion guide for the linear motion shaft. The massage machine of Claim 1.   The massage machine according to any one of claims 1 to 7, further comprising a drive mechanism that drives the treatment element in a vertical direction, and a drive shaft in the drive mechanism also serves as the fixed shaft. .

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