JP2005046541A - Massage apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To receive a massage performed by clamping the shoulders from the front and the rear in a lightweight, compact and low cost massage apparatus. <P>SOLUTION: This installation type massage apparatus capable of massaging the shoulders of a supine user is provided with a left shoulder massaging means 10 clamping the left-side shoulder between a pair of front/rear massaging hands 20 and 21; a right shoulder massaging means 11 clamping the right-side shoulder between a pair of front/rear massaging hands 20 and 21; and a massage mechanism 12 making the pairs of front/rear massaging hands 20 and 21 repeat approach/separation relative to the front/rear in the left/right massaging means 10 and 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a stationary massage apparatus capable of receiving massage such as pinching shoulders from front and rear.

The present applicant has developed and applied for a patent on a stationary massage device that can receive a massage such as pinching the neck from the left and right sides while the user is lying on his / her back, and chewing (see Patent Document 1).
When this massage device is used, it is possible to acupressure the neck and shoulders while maintaining the posture where the user is lying down, and thus the massage effect is very high.
JP 2002-248142 A (FIGS. 1 and 2)

However, in order to effectively relieve the stiffness of the shoulder, it is disclosed in Patent Document 1 that although it is apparent from experience that it is effective to massage the affected part (shoulder) from the front and back. With technology, it was difficult to do such a massage.
The present invention has been made in view of the above circumstances, and provides a massage device that can receive a massage such as sandwiching a shoulder from the front and rear while being lightweight and compact and inexpensive. For the purpose. Another object of the present invention is to provide a massage device that can massage both the left and right shoulders at the same time and can easily and accurately position the shoulder of the user with respect to the massage device. To do.

In order to achieve the above object, the present invention has taken the following measures.
In other words, the technical means for solving the problems in the present invention is a stationary massage device that can massage the shoulder of a user who is lying on his / her back, and is arranged at the front and rear to sandwich the shoulder and perform massage. A pair of right and left rubbing means having front and rear rubbing hands is provided, and a massage mechanism for repeating the approach and separation of the front and rear rubbing hands is provided.
According to this technical means, it is possible to massage by sandwiching the left and right shoulders from the front and rear.

The technical means for solving the problems in the present invention is characterized in that a mounting table capable of supporting a user's head is provided between the pair of left and right rubbing means.
According to this technical means, the user can receive a massage in an easy posture by placing the head on the placing table.
Further, as a technical means for solving the problems in the present invention, the massage mechanism is provided with a width adjusting means for making the left-right spacing of the front kneading means and / or the left-right spacing of the rear kneading means variable. It is characterized by being.

According to this technical means, it is possible to flexibly cope with the difference in the shoulder width of the user, selection of the stagnation position, and the like.
Further, the technical means for solving the problem in the present invention is that the pair of left and right squeezing means is a left shoulder squeezing means and a right shoulder squeezing means, and the massage mechanism is a left shoulder squeezing means. A left shoulder driving unit for driving the right shoulder, a right shoulder driving unit for driving the right shoulder squeezing unit, and a motor for transmitting a rotational driving force to the left shoulder and the right shoulder shoulder driving unit, Includes a drive shaft that is rotatably held with its axis oriented in the vertical direction and is driven to rotate by the motor, a rotating body that is rotatably provided at both end portions of the drive shaft, and around the rotating body. An inclined boss that is provided so as to be relatively rotatable in an inclined state with respect to the axis of the drive shaft and in which the front and rear grippers protrude in the radially outward direction, and the front and rear grippers on the inclined boss Protrudes in the opposite direction to the protruding direction of And a detent member provided with a sliding groove for guiding the reciprocation of a predetermined stroke in the direction along the drive shaft core by inserting the detent projection. The width adjusting means has a screw shaft that enables the rotation preventing members provided in the pair of left and right to move in the left-right direction and an operation knob that rotates the screw shaft. Features.

  According to this technical means, the rotating body rotates integrally with the rotation of the drive shaft. At this time, a rotational force is also applied to the inclined boss. However, the inclined boss does not actually rotate but rotates in the sliding groove because the anti-rotation protrusion is fitted in the sliding groove of the anti-rotation member. The swell motion accompanying the reciprocating movement of the stop member occurs. Therefore, the front and rear grippers provided on the tilted boss in an inclined state together cause a swell motion. As a result, the front gripper and the rear gripper can cause a gripping operation that repeats approaching and separating from each other.

The technical means for solving the problems in the present invention is characterized in that the rear gripper is provided with a hemispherical rear pressing body on the side facing the shoulder of the user.
According to this technical means, the shoulder is pressed from the rear side (back side) by the hemispherical rear pressing body, so that effective massage is possible.
Further, the technical means for solving the problem in the present invention is that the back gripper is a backup material that applies a biasing force toward the front grip when the rear grip is subjected to a load and causes a predetermined sinking. Is provided.

Further, the technical means for solving the problems in the present invention is characterized in that the front gripper is supported by a front pressing body via an elastic neck portion, and the front pressing body is formed in a spherical shape. And
According to this technical means, the contact from the shoulder to the neck does not feel uncomfortable.

  With the massage device according to the present invention, it is possible to receive a massage such as pinching the shoulders from the front and back while being lightweight and compact and inexpensive. Moreover, in this massage apparatus, both the left and right shoulders can be massaged at the same time, and the user's shoulder relative to the massage apparatus can be easily and accurately positioned.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the usage status of an embodiment of a massage apparatus 1 according to the present invention. The massage device 1 can be used in a stationary state, and the user can receive massage on both left and right shoulders while lying on his back.
As shown in FIG. 2 (perspective view when not in use) and FIG. 3 (perspective view when in use), the massage device 1 is formed by connecting a pair of left and right bracket members 2 with a plurality of shafts 3. The device frame 4 is assembled. The device frame 4 is provided with a left shoulder kneading means 10, a right shoulder kneading means 11, a massage mechanism 12, and a mounting table 13. The left shoulder kneading means 10 and the right shoulder kneading means 11 perform posture conversion between a standby posture when not in use and a usage posture when in use, and sandwich the user's shoulder when used (massage operation). Therefore, in order to allow these movements, a cover 15 having abundant elasticity and flexibility such as a resin sheet, a rubber sheet, a sponge, a fabric, leather, and synthetic leather is covered. . The apparatus frame 4 except for the left shoulder squeezing means 10 and the right shoulder squeezing means 11 is covered with a casing 16 formed of resin, metal, or the like. Instead of the casing 16, the entire apparatus may be covered with the cover 15 described above. The cover 15 and the casing 16 are not shown except for FIGS.

  As shown in FIGS. 10 to 12, the left shoulder squeezing means 10 has a pair of front and rear squeezing hands (a front squeezing hand 20 and a rear squeezing hand 21) that sandwich the left shoulder. Of these, the rear gripper 21 includes a rear arm 23 and a rear pressing body 24 provided at the tip of the rear arm 23. The back grip 21 is provided with a backup material 25 on the rear side of the rear pressing body 24. The rear arm 23 is formed in a plate shape having a plate spring action in the front-rear direction by using resin or metal, and generates a resilient force against a rearward load when a rearward load is applied to the rear pressing body 24. The rear pressing body 24 is formed to protrude in a hemispherical shape having a spherical front surface from an elastic material such as resin or rubber, or an inelastic material such as resin, metal, or wood, and the shoulder from the rear side (back side). Used to acupressure.

  The backup material 25 is formed in a plate shape having a leaf spring action in the front-rear direction with resin or metal, and is arranged in parallel with the rear grip 21. Therefore, when the rear gripper 21 receives a load and causes a predetermined sinking, the rear gripper 21 comes into contact with the backup material 25, and when the rear gripping hand 21 further sinks, the backup material 25 warps backward together with this. It becomes like this. At this time, an elastic force is generated in the backup material 25 so as to push back the rear grip 21 toward the front grip 20, and the rear grip 21 applies a biasing force to restore the sinking. As a result, step-by-step replenishment or strength increase is achieved for the feeling of shiatsu on the shoulder and the feeling of itchiness by the rear gripping hand 21. The base portions of the rear grip 21 and the backup material 25 are integrally coupled to a rear inclined boss 30 described later.

  The front grip 20 includes a front arm 27, a front pressing body 28 provided at the tip of the front arm 27, and an elastic neck portion 29 provided between the front arm 27 and the front pressing body 28. Have. The elastic neck portion 29 is formed of an elastic material such as resin, rubber, or a coil spring, and is slightly strengthened against this load when a load is applied to the front pressing body 28 from any direction on the outer periphery. It is designed to give rise to the resilience of. The front pressing body 28 is formed in a spherical shape, so that not only the shoulder but also the contact from the shoulder to the neck muscle can be performed without a sense of incongruity by a smooth spherical surface. The base portion of the front grip 20 is integrally coupled to a front inclined boss 30 described later.

  The right shoulder squeezing means 11 basically has the same configuration as the left shoulder squeezing means 10, and the only difference from the left shoulder squeezing means 10 is that the right shoulder is to be sandwiched. That is, the right shoulder squeezing means 11 has a pair of front and rear squeezing hands (a front squeezing hand 20 and a rear squeezing hand 21). The rear squeezing hand 21 has a rear arm 23 and a rear pressing body 24, and is also a backup. A material 25 is provided, and the front grip 20 has a front arm 27, a front pressing body 28, and an elastic neck portion 29. The rear grip 21 and the backup member 25 are integrally coupled to a rear inclined boss 30 described later, and the front grip 20 is integrally coupled to a front inclined boss 30 described later. ing.

  The massage mechanism 12 includes a left shoulder drive unit 35 that causes the front and rear squeezing hands 20 and 21 to repeatedly move back and forth repeatedly with respect to the left shoulder squeezing means 10, and a front and rear squeezing hands 20 and 21 with respect to the right shoulder squeezing means 11. And a right shoulder drive unit 36 that repeats the approach and separation. The massage mechanism 12 has a motor 37 that transmits a rotational driving force to the left and right shoulder driving portions 35 and 36. The massage mechanism 12 is further provided with a width adjusting means 40 that makes it possible to vary the distance in the width direction between the front grippers 20 and the rear grippers 21 between the left and right gripping means 10, 11. The massage mechanism 12 is swingably held in the apparatus frame 4 described above. With this swinging structure, the left and right squeezing means 10 and 11 have a standby posture when not used and a use posture when used. A posture conversion mechanism 41 for changing the posture is configured.

  The motor 37 can be provided separately for the left shoulder drive unit 35 and the right shoulder drive unit 36, but in this embodiment, only one unit is shared by the left and right drive units 35 and 36. Therefore, in this massage mechanism 12, a left shoulder drive unit 35 is connected to the left side and a right shoulder drive unit 36 is connected to the right side with a motor 37 sandwiched in the center, and a pair of side plates 42 are provided on the left and right sides of these three members. The whole unit is integrated. The axis of the motor 37 is directed in the left-right direction. The motor 37 is preferably capable of switching between normal rotation and reverse rotation, speed adjustment, and the like.

The left shoulder drive unit 35 is provided on a motor 37 via a gear box 44. The gear box 44 has a direction orthogonal to the axis of the motor 37 (the front-rear direction if the massage mechanism 12 is not used). The drive shaft 45 is provided so as to protrude outward in both directions with the axis centering in the vertical direction when in use. A rotational drive by the motor 37 changes its direction and is transmitted to the drive shaft 45 at a reduced speed.
The left shoulder drive unit 35 includes the drive shaft 45, a pair of rotating bodies 4646 provided at both ends of the driving shaft 45, and a pair of inclined bosses 30 provided on the respective rotating bodies 46 so as to be externally fitted. Have. As described above, each of the inclined bosses 30 is connected to the front grip 20 (front arm 27) and the rear grip 21 (rear arm 23) of the left shoulder gripping means 10. That is, the front-rear distance between the front grip 20 and the rear grip 21 is set by the mutual distance at which the pair of rotating bodies 46 are provided at both ends of the drive shaft 45. The inclined boss 30 is also provided with a rotation prevention projection 47 in a direction opposite to the direction in which the front gripping hand 20 and the rear gripping hand 21 are provided, and the rotation prevention projection 47 is held by the rotation prevention member 48. ing.

  The rotating body 46 is provided so as to be integrally rotatable with respect to each end portion of the drive shaft 45. The inclined boss 30 is provided so as to be relatively rotatable with respect to the rotating body 46 in a state where the inclined boss 30 is inclined around the axis of the drive shaft 45. The front gripper 20 and the rear gripper 21 are connected to the inclined boss 30 whose axis is inclined in this way so as to protrude along the radial direction (of course, it is inclined from the radial direction of the drive shaft 45). ing). At this time, the rotational bodies 46 on both sides with respect to the drive shaft 45 are arranged so that the inclination directions of the front gripper 20 and the rear gripper 21 are opposite to each other ("C" or "reverse C"). The mounting angle is related. The direction in which the rotation preventing projection 47 protrudes from the inclined boss 30 is opposite to the front grip 20 and the rear grip 21, so the rotation projection 47 itself is also inclined from the radial direction of the drive shaft 45.

The anti-rotation member 48 has a sliding groove 53 into which the anti-rotation protrusion 47 is fitted. The sliding groove 53 is a long hole in the direction along the drive shaft 45 and guides the rotation preventing member 48 to reciprocate along the drive shaft 45 with a predetermined stroke. The anti-rotation member 48 is swingably held by the front pivot 55 and the rear pivot 56 via a pivot 54 whose axis is parallel to the drive shaft 45. For this reason, even if the anti-rotation protrusion 47 slightly swings in the direction intersecting the sliding groove 53, it can absorb and follow it.
The right shoulder drive unit 36 basically has the same configuration as the left shoulder drive unit 35 described above, and the difference from the left shoulder drive unit 35 is that a pair of inclined bosses 30 are connected to the front shoulder 20 of the right shoulder squeezing means 11. It is only that the rear grip 21 is connected. That is, the right shoulder drive unit 36 is provided on the motor 39 via the right gear box 44, and includes a drive shaft 45, a pair of rotating bodies 46, a pair of inclined bosses 30, a rotation prevention projection 47, and a rotation And a stop member 48. Further, the rotation preventing member 48 is swingably held on the front pivot support 55 and the rear pivot support 56 via the pivot 54.

  In the present embodiment, the width adjusting means 40 (see FIGS. 6 to 9) is configured to change the widthwise interval between the rear grips 21 between the left and right gripping means 10 and 11. As a specific structure, a feed screw mechanism 60 is employed. That is, the feed screw mechanism 60 is constructed such that a screw shaft 61 is rotatably installed in parallel with the axis of the motor 37 between the left and right side plates 42 provided for unitization as the massage mechanism 12. Guide shafts 62 are installed on both sides of the shaft 61, and as shown in FIG. 13, a rear pivot support 56 holding a rear-side detent member 48 on the left shoulder drive portion 35 with respect to the screw shaft 61 and the guide shaft 62. The rear pivot support 56 holding the rear-side detent member 48 on the right shoulder drive unit 36 is penetrated in a skewered manner.

Of course, a female screw is provided in a portion of the rear pivot support 56 through which the screw shaft 61 passes, and a screwed relationship with the screw shaft 61 is obtained. However, in the screw shaft 61, the male screw has a reverse screw relationship between the region where the rear pivot support 56 of the left shoulder drive unit 35 is screwed and the region where the rear pivot support 56 of the right shoulder drive unit 36 is screwed ( The direction of the lead is reversed). One end of the screw shaft 61 is also extended after penetrating the side plate 42, and an operation knob 63 is provided at the end.
Therefore, when the operation knob 63 is operated to rotate, the rear pivot support 56 of the left shoulder drive unit 35 and the rear pivot support 56 of the right shoulder drive unit 36 move in the left-right direction due to the rotation of the screw shaft 61 or vice versa. Or move away from each other.

In the width adjusting means 40 of the present embodiment, as described above, only the interval in the width direction between the rear grips 21 is variable, and the width direction interval between the front grips 20 is not changed, so as shown in FIG. Further, the front pivot support 55 that holds the front-side detent member 48 of the left shoulder drive unit 35 and the front pivot support 55 that holds the front-side detent member 48 of the right shoulder drive unit 36 are both It was fixed to the unit bottom plate 64 of the massage mechanism 12.
The posture conversion mechanism 41 (see FIGS. 4 and 5) includes left and right bracket members 2 in the apparatus frame 4 and a swing shaft that supports the massage mechanism 12 between the left and right bracket members 2 so as to be swingable about the horizontal axis. 65. In the massaging mechanism 12 unitized as described above, the swing shaft 65 is provided so as to be coaxial with each other outward from the side plate 42 surrounding the left and right sides.

  One side plate 42 is further extended to attach the operation knob 63 even after the screw shaft 61 of the width adjusting means 40 has penetrated as described above. Therefore, an arc-shaped elongated hole 66 is formed in the bracket member 2 that is close to and opposed to the side plate 42 to allow the extension portion of the screw shaft 61 to pass therethrough. The elongated hole 66 has an arcuate curve so as to allow an extension of the screw shaft 61 to move in an arc when the massage mechanism 12 swings about the swinging shaft 65. In addition, the arrangement and arc length of the long holes 66 are determined so that the front and rear grippers 20 and 21 of the left and right gripping means 10 and 11 face upward in the range in which the massage mechanism 12 swings, as shown in FIG. The posture change between the two postures, that is, the posture (see FIG. 3) that faces sideways with the rubbing hand 21 down and the front rubbing hand 20 up, is adapted.

  For this reason, the portion of the screw shaft 61 that extends through the side plate 42 and passes through the elongated hole 66 acts as the swing limiting piece 67 of the posture conversion mechanism 41. Therefore, when the front and rear gripping hands 20 and 21 in the left and right gripping means 10 and 11 are facing upward, it becomes easy for the user to sandwich the shoulder between the front and rear gripping hands 20 and 21 by the gesture of lying on his back. The upward posture corresponds to the standby posture when not in use. On the other hand, when the front and rear gripping hands 20 and 21 in the left and right gripping means 10 and 11 are in the horizontal direction, the shoulder of the lying user can be gripped with the front and rear gripping hands 20 and 21 as it is, so that the lateral orientation at this time Corresponds to the usage posture during use. By such a posture conversion mechanism 41, the swing range of the massage mechanism 12 is physically applied and regulated as the arc length of the long hole 66.

  In this posture conversion mechanism 41, the massage mechanism 12 is suspended and balanced with respect to the swing shaft 65 so that the left and right squeezing means 10 and 11 can be held in an upward direction and in a non-use standby posture. It is preferable to set or bias between the massage mechanism 12 and an appropriate position of the apparatus frame 4 with a spring or the like. However, the operation knob 63 not only operates the width adjusting means 40 by rotating this, but also forcibly operates the attitude changing mechanism 41 by moving the arc adjusting means along the long hole 66. Therefore, the above balance setting or spring biasing is not always necessary.

The mounting table 13 is fixed using an appropriate shaft 3 between the left and right bracket members 2 in the apparatus frame 4, and the massage mechanism 12 is interposed between the left and right squeezing means 10 and 11. It is provided so as to cover the motor 37. As shown in FIG. 1, the mounting table 13 can support the user's head lying on his back. The mounting table 13 is preferably covered with a cushion material having a slight thickness.
The massage device 1 having such a configuration is configured so that the left and right squeezing means 10 and 11 face upward when not in use and maintain a standby posture. Therefore, the user lies down on his / her back with the aim of bringing the left shoulder into contact with the rear shoulder 21 of the left shoulder kneading means 10 and simultaneously bringing the right shoulder into contact with the rear shoulder 21 of the right shoulder kneading means 11. Then, the head is gently left on the mounting table 13.

As a result, the left and right kneading means 10 and 11 are in a use posture in which the rear kneading hand 21 is down and the front kneading hand 20 is up due to the movement of the posture changing mechanism 41. At the same time, the left shoulder of the user is the left shoulder. The right shoulder is fitted between the pair of front and rear squeezing hands 20 and 21 in the right shoulder squeezing means 11 and is fitted to the body. Further, since the mounting table 13 is provided, the user can hold the head in a comfortable posture and stably.
At this time, the user desires the operation knob 63 of the width adjusting means 40 when the contact position of the rear gripping hand 21 with respect to the rear shoulder (back side) is poor due to the difference in the shoulder width of the user or the preference of the gripping position. Only the rotation operation is performed to adjust the contact position of the rear gripping hand 21. Then, an appropriate switch operation for rotating the motor 37 of the massage mechanism 12 is performed. At this time, the rotation direction and rotation speed of the motor 37 may be appropriately selected according to the user's preference.

  When the motor 37 of the massage mechanism 12 begins to rotate, the left shoulder drive unit 35 integrally rotates the rotating bodies 46 on both sides together with the rotation of the drive shaft 45, thereby applying a rotational force to the inclined bosses 30 on both sides. However, the inclined boss 30 is not actually rotated because the anti-rotation protrusion 47 is fitted in the sliding groove 53 of the anti-rotation member 48, and the anti-rotation member 48 reciprocates in the sliding groove 53. It will be. Further, since the anti-rotation member 48 is swingably held on the front pivot support 55 and the rear pivot support 56 via the pivot 54, the anti-rotation protrusion 47 is swung in the direction intersecting the sliding groove 53. As a result, the pair of front and rear grippers 20 and 21 repeats a swell motion that combines the separation and the swing motion. These also occur in the right shoulder drive unit 36 in the same manner.

Therefore, the user receives a massage that is rubbed with the left and right shoulders sandwiched from the front and rear.
The present invention is not limited to the above-described embodiment, and can be appropriately changed according to the situation of implementation.

It is the side view which showed the use condition about one Embodiment of the massage apparatus which concerns on this invention. It is the perspective view which showed the time of non-use of a massage apparatus. It is the perspective view which showed the time of use of a massage apparatus. FIG. 3 is a right side view corresponding to FIG. 2. FIG. 4 is a right side view corresponding to FIG. 3. FIG. 3 is a front view corresponding to FIG. 2. FIG. 7 is a bottom view corresponding to FIG. 6. It is the front view which showed the condition which operated the width adjustment means from the state of FIG. FIG. 9 is a bottom view corresponding to FIG. 8. It is the perspective view which extracted and showed the massage mechanism. It is a front view corresponding to FIG. FIG. 12 is a right side view corresponding to FIG. 11. It is an expansion perspective view which shows the rotation prevention member of a rear part side. It is an expansion perspective view which shows the rotation prevention member of the front part side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Massage apparatus 10 Left shoulder squeezing means 11 Right shoulder squeezing means 12 Massage mechanism 13 Mounting stand 20 Front squeezing hand 21 Rear squeezing hand 24 Rear pressing body 25 Backup material 28 Front pressing body 29 Elastic neck part 30 Inclined boss 35 Left shoulder drive part 36 Right shoulder drive unit 37 Motor 40 Width adjusting means 41 Posture changing mechanism 45 Drive shaft 46 Rotating body 47 Non-rotating projection 48 Non-rotating member 53 Sliding groove 60 Feed screw mechanism 61 Screw shaft 63 Operation knob 65 Oscillating shaft 66 Arc shape Long hole 67 Oscillation limiting piece

Claims (7)

A stationary massage device capable of massaging a shoulder of a user who lies on his back,
A pair of right and left rubbing means (10) and (11) having front and rear rubbing hands (21) arranged in front and rear to sandwich the shoulder for massage are provided,
A massage apparatus comprising a massage mechanism (12) for repeating the approach and separation of the front and rear grip hands (20) and (21).   The massage apparatus according to claim 1, wherein a mounting table (13) capable of supporting a user's head is provided between the pair of left and right rubbing means (10) (11).   The massage mechanism (12) is provided with a width adjusting means (40) that makes the left and right intervals of the front kneading means (20) and / or the left and right intervals of the rear kneading means (21) variable. The massage apparatus according to claim 1 or 2, wherein The left and right squeezing means (10) and (11) are left shoulder squeezing means (10) and right shoulder squeezing means (11),
The massage mechanism (12) includes a left shoulder drive unit (35) for driving the left shoulder kneading means (10), a right shoulder drive unit (36) for driving the right shoulder kneading means (11), and the left shoulder and the right shoulder. A motor (37) for transmitting a rotational driving force to the drive units (35) and (36);
The left shoulder and right shoulder drive portions (35) and (36) are rotatably held with their axis centers turned in the vertical direction and are driven to rotate by the motor (37),
Rotating bodies (46) (46) provided so as to be integrally rotatable at both ends of the drive shaft (45);
Around this rotating body (46), it is provided so as to be relatively rotatable in an inclined state with respect to the axis of the drive shaft (45), and the front gripping hand (20) and the rear gripping hand (21) are projected in the radially outward direction. An inclined boss (30),
On the inclined boss (30), a detent protrusion (47) provided so as to protrude in a direction opposite to the protruding direction of the front gripper (20) and the rear gripper (21),
A detent member (48) provided with a sliding groove (53) for fitting the detent protrusion (47) and guiding reciprocation of a predetermined stroke in a direction along the core of the drive shaft (45); Have
The width adjusting means (40) includes a screw shaft (61) that allows the rotation preventing members (48) (48) provided in the pair of left and right to move toward and away from each other in the left-right direction, and the screw shaft (61). The massage device according to claim 3, further comprising an operation knob (63) to be rotated.   The hemispherical rear pressure body (24) is provided on the rear grip (21) on the side facing the user's shoulder, according to any one of claims 1 to 4. Massage device.   The rear gripper (21) is provided with a backup material (25) for urging the urging force toward the front gripper (20) when the rear gripper (21) receives a load and causes a predetermined sinking. The massage device according to any one of claims 1 to 5, wherein the massage device is provided.   The front grip (20) is supported by a front pressing body (28) via an elastic neck (29), and the front pressing body (28) is formed in a spherical shape. The massage apparatus in any one of Claims 1 thru | or 6.

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