JP2692949B2 - Massage machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a massage machine, and more particularly, to a massager for a waist, back, shoulders, neck, etc. of a human body stored in a predetermined place such as a chair or a bed. Regarding the improvement of the massage machine to give.

(B) Conventional Technology Conventionally, as chair type massage machines, those shown in FIGS. 5 and 6 are known.

That is, two guide rails 52, 52 arranged in equilibrium with each other in the backrest portion 51a of the chair 51, and a pair of left and right driving bodies 53 mounted on the respective guide rails 52, 52 so as to be vertically movable. 53 and a drive shaft 53, which is horizontally mounted between the drive shafts 53 and 53, and is driven to rotate by a motor in one drive shaft 53, and a main shaft 54 mounted below the main shaft 54 in parallel with the drive shaft 53. It is driven to rotate by the motor inside the body 53, and the right half has a male screw part 55a consisting of a right screw.
Is screwed to the feed shaft 55 having a male screw portion 55b consisting of a left screw in the left half portion, and two male screw portions 55a and 55b of the feed shaft 55 with female screw portions 56a and 56b, respectively, and a through hole portion 56.
The pair of left and right connecting arms 56 and 56 are slidably attached to the main shaft 54 by c and 56c, and the connecting arms 56 and 56 are eccentrically rotatable and connected to the main shaft 54 in the axial direction. A pair of left and right inner rings 57, 57 slidably attached to the outer ring, and a pair of left and right outer rings 58, 58 rotatably mounted on the outer peripheries of the inner rings 57, 57 through balls. A pair of left and right fir arms 59 and 59 fixed to the rings 58 and 58, respectively, and a left and right pair fixed to the tips of the fir arms 59 and 59 and performing a massage operation as the outer rigs 58 and 58 rotate. It is known that it is equipped with firs 60.

In other words, this massage machine is a rotation imparting means for imparting rotation movement to the outer rings 58, 58, and the main shaft 54 is rotationally driven by the motor in the driving body 53 and is slidable in the axial direction of the main shaft 54. A pair of left and right inner rings attached to the
It is equipped with 57 and 57.

In this massage machine, the massage width, that is, the width between the massage balls 60, 60 is changed as follows. First, the rotational force of the motor 61 incorporated in the right driving body 53 is transmitted to the feed shaft 55 by the gears 62 and 63 inside the driving body 53. Then, as the feed shaft 55 rotates, the connecting arms 56, 56 having the female screw portions 56a, 56b screwed onto the male screw portions 55a, 55b move leftward or rightward in the axial direction. Then, the connecting arm 56
The inner ring 57, 57 connected to 56 also slides to the left or right by the protrusion 54a of the main shaft 54, and the chamfered balls 60, 60
Moves left or right to change the massage width.

(C) Problems to be Solved by the Invention In the massage machine as described above, the massage balls 60, 60
To change the massage width by moving the in the axial direction of the main shaft 54. As described above, the feed shaft 55 is provided separately from the main shaft 54, and further. A connecting arm that slides an inner ring 57 slidably attached to the spindle 54 in the axial direction of the spindle 54.
Since 56 is provided, there is a problem that the mechanism for changing the massage width is large, the space therefor is large, and the manufacturing cost is high.

Furthermore, in this massage machine, when changing the distance between the massage balls 60, 60, the inner ring 57, 57
The movement of the connecting arms 56, 56 sliding in the axial direction of 54 in the left or right direction is the rotational movement of the feed shaft 55 provided at a certain distance from the main shaft 54 on which the inner rings 57, 57 are mounted. Therefore, there is also a problem in that the movement of the connecting arms 56, 56 in the left or right direction and the movement of the inner rings 57, 57 in the left or right direction are not smooth.

The present invention has been made in view of the above circumstances,
An object of the present invention is to provide a massage machine which has a small mechanism for changing the massage width, requires a small space for it, has a low manufacturing cost, and can smoothly change the massage width. To do.

(D) Means for Solving the Problem and Its Action The present invention relates to a pair of massage balls for massaging, a pair of outer rings connected to each of these massage balls via a massage arm, and these. A massager having a rotation imparting means for imparting a rotational movement to the outer ring of the outer ring, wherein the rotation imparting means is rotatably moved and is eccentrically fitted inside the outer sleeve and the outer sleeve. And an inner ring having a female threaded portion at a position corresponding to the opening thereof, the inner ring being slidably mounted on the shaft sleeve in the axial direction thereof, and further rotating independently of the inner ring inside the shaft sleeve. A feed shaft having a male threaded portion which is fitted as much as possible and has a threaded fit with the female threaded portion, and which prevents rotation of the feed shaft when desired, whereby the inner ring is secured to the female threaded portion. Through fine the male screw portion is a massage machine which is characterized in that it comprises a rotation preventing means which can change the interval between ball seen is slid to the axial direction.

That is, the present invention is to change the massage width for changing the massage width by widening or narrowing the interval between the massage balls and the main part of the rotation imparting means for giving a rotary motion to the massage balls for performing massage. The main part of the means has a coaxial structure instead of two parallel shafts.

Here, the opening portion of the shaft sleeve is provided for the purpose of screwing a female screw portion provided at a predetermined position of the inner ring with a male screw portion of the feed shaft. The size and the number of the openings are appropriately determined in consideration of the desired range for changing the massage width, the smoothness of movement of the female screw portion and the male screw portion due to the engagement, and the like.

The eccentrically rotating inner ring is rotatably fitted into the inner side of the outer ring by a ball or the like as shown in the following examples, and is slid in the axial direction on the shaft sleeve, but at a position corresponding to the opening. Since it has a female screw part that is screwed into the male screw part, it rotates with the rotation of the shaft sleeve.

The feed shaft slides the inner ring in the axial direction and can be rotated independently of the shaft sleeve. However, when desired, two kinds of gears, large and small, as in the following embodiments, can be used.
Rotated synchronously with the shaft sleeve.

As the rotation preventing means, for example, a fixed gear (a gear that does not rotate) is used, and this fixed gear is attached to the end of the feed shaft and meshed with a rotating gear that rotates together with the feed shaft to prevent rotation of the feed shaft. Then, the massage width is changed.

Thus, in this massage machine, the main part of the rotation imparting means for imparting a rotational movement to the massage balls for performing massage, and for changing the massage width by widening or narrowing the interval between the massage balls when desired. Since the main part of the massage width changing means is configured coaxially, the mechanism for changing the massage width is small, the space for it is small, and the manufacturing cost is low. Changes can be made smoothly.

(E) Embodiment Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. The present invention is not limited by this.

1 to 4, the main part of the chair-type massage machine is a guide rail that is arranged on the right side in the back portion of the chair so as to extend in the vertical direction, and a drive that is vertically movably mounted on the guide rail. The body part 1 and the drive part 1 are rotatably connected and horizontally arranged from the drive part 1 to the left. The right half part is provided with a right-handed external thread part 2a, and the left half part is provided with a left-handed external thread. A feed shaft 2 each having a portion, a feed sleeve 2 rotatably attached to the feed shaft 2 and having openings 3a on the left and right, and a feed sleeve 3
Is attached to the shaft sleeve 3 so as to rotate synchronously with the shaft sleeve 3 and slide on the shaft sleeve 3 in the axial direction by the length of the opening 3a. An eccentric inner ring 4 having a female screw portion 4a screwed into each of the male screw portions 2a at a position corresponding to the portion 3a;
An outer ring 6 rotatably attached to the outside of the inner ring 4 via a ball 5, a baffle arm 7 having one end fixed to the outer ring 6, and an outer ring 6 attached to the other end of the buff arm 7. It is mainly composed of a massage ball 8 that performs a massage operation with the rotation of the outer ring 6.

Further, the driving body portion 1 is further fixed to the motor 9 having the vertical rotation shaft 9a, the spiral gear 10 attached to the rotation shaft 9a of the motor 9, the spiral gear 10 meshing with the spiral gear 10 and the right end of the shaft sleeve 3. The first large gear 11, the second large gear 12 having the same diameter and the same pitch as the first large gear 11 and fixed to the feed shaft 2 on the right side of the first large gear 11, and these large gears 11 and
A bracket 13 having a U-shaped plane arranged behind 12 and a horizontal rotary shaft 22 inside the bracket 13 and having the same diameter to be meshed with the first large gear 11 and the second large gear 12 when desired, First pinion 14 and second pinion with the same pitch
The small gear 15 and a fixed shaft 23 that is horizontal below the second small gear 15
Stopper 19 as a fixed gear that is fixed to the second large gear 12 when desired, a support shaft 17 that rotatably supports the bracket 13, and a coil spring 16 that rotates the bracket 13 around the support shaft 17. And a weight 18, a solenoid 20 which, together with the coil spring 16 and the weight 18, applies a turning force to the bracket 13, and a coil spring 21 which connects the front portion 20a of the solenoid 20 and the bracket 13.

Here, the stopper 19 is engaged with the second large gear 12 at a desired time to prevent the rotation of the feed shaft 2, so that the inner ring 4 is fixed to the female screw portion 4a and the male screw portion 2a of the feed shaft 2.
Sliding in the axial direction of the feed shaft 2 via
It functions as a rotation preventing means that can change the interval between them.

 Next, the movement of the drive unit 1 will be described.

As shown in FIG. 1, the first small gear 14 is replaced by the first large gear 11
Moreover, when the second small gear 15 is engaged with the second large gear 12, the rotation of the motor 9 is transmitted to the shaft sleeve 3 via the spiral gear 10 and the first large gear 11. In addition, the rotation of the first large gear 11 is caused by the rotation of the first small gear 14, the second small gear 15, and the second small gear 15.
It is transmitted to the feed shaft 2 via the large gear 12. Therefore,
The shaft sleeve 3 and the feed shaft 2 rotate synchronously in the same direction, and give a rubbing motion to the rice balls 8.

On the other hand, as shown in FIG. 2, by energizing the solenoid 20, the bracket 13 is rotated about the support shaft 17 as a rotation shaft, and the first pinion gear 14 and the second pinion gear 15 are respectively moved to the first
When the stopper 19 is engaged with the second large gear 12 while being separated from the large gear 11 and the second large gear 12, the rotation of the motor 9 is transmitted to the shaft sleeve 3 through the first large gear 11, but the feed shaft 2 Since the rotation is blocked by the stopper 19, it does not reach the feed shaft 2. Therefore, the inner ring 4 is slid in the axial direction of the feed shaft 2 via the female screw portion 4a of the feed shaft 2 and the male screw portion 2a of the feed shaft 2 by the rotation of the shaft sleeve 3. Can be changed.

In FIGS. 1 and 2, reference numeral 24 denotes a coil spring that restricts the outer ring 6 from rotating with the rotation of the inner ring 4 and gives the outer ring 6 a predetermined rotational movement. Is attached to the protrusion 6a of the outer ring 6.

According to this massage machine, as described above, the rotation imparting means (mainly the shaft sleeve 3 and the inner ring 4) for imparting the rotation movement to the massage balls 8 for performing the massage.
And the massage width changing means (mainly the feed shaft 2 and the stopper 19) for changing the massage width by widening or narrowing the interval between the massage balls 8, 8 when desired, are configured coaxially. The mechanism for changing the width is small and the space for it is small,
Moreover, the manufacturing cost is low, and the massage width can be changed smoothly.

(E) Effect of the Invention As described above, this massage machine widens or narrows the interval between the main part of the rotation imparting means for imparting a rotational movement to the massage balls for massaging and the massage balls when desired. The main part of the massage width changing means for changing the massage width is configured coaxially. Therefore, according to this massage machine, the mechanism for changing the massage width is small, and the space therefor is small,
Moreover, the manufacturing cost is low, and the massage width can be changed smoothly.

[Brief description of the drawings]

1 to 4 show an embodiment of the present invention, FIG. 1 is an enlarged perspective view of an essential part in a state where rotation of a feed shaft constituting a massage machine is not blocked, and FIG. 2 is a massage machine. FIG. 3 is a longitudinal sectional view of an essential part of the massage machine, and FIG. 4 is a sectional view taken along the line IV-IV of FIG. is there. 5 and 6 show a conventional example, FIG. 5 is an overall perspective view of the massage machine, and FIG. 6 is an enlarged rear view of the main parts of the massage machine. 1 ... Driver part, 2 ... Feed shaft, 2a ... Male screw part, 3 ... Shaft sleeve, 3a ... Opening part, 4 ... Inner ring, 4a ... Female screw part, 5 ... Ball, 6 ... … Outer ring, 7 …… Fir arm, 8 …… Fir ball, 9 …… Motor, 10 …… Spiral gear, 11 …… First gear, 12 …… Second gear, 13 …… Bracket, 14… … First pinion gear, 15 …… Second pinion, 19 …… Stopper.

Claims (1)

(57) [Claims] 1. A pair of fir balls for performing a massage,
In a massage machine equipped with a pair of outer rings connected to each of these fir balls via a bevel arm, and rotation imparting means for imparting rotational movement to these outer rings, the rotation imparting means rotates A shaft sleeve which is driven and has an opening, and which is eccentrically rotatably fitted inside the outer ring and slidably mounted on the shaft sleeve in the axial direction thereof, and at a position corresponding to the opening. A feed shaft having an inner ring having a female screw portion, and further having a male screw portion which is fitted to the inner side of the shaft sleeve so as to be rotatable independently of the inner ring and which fits into the female screw portion; and a rotation of the feed shaft when desired. A rotation preventing means capable of changing the distance between the balls when the inner ring is slid in the axial direction through the female thread portion and the male thread portion. Massage machine, characterized in that it comprises.