JP2001252320A - Massage unit and chair type massager provided with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To massage the shoulders and the back of a subject while holding them from both the sides of the breast. SOLUTION: This massage unit is equipped with a driving means 3 for applying powers to an entire four-joint link in the direction of pressing shoulders 71 of a subject 7 and in the opposite direction with a projection 48, which is fitted to the back side of the shoulder 71 of the subject 7, as the center while being linked to a five-joint link 4 provided with a first link 41 having the projection 48 on the side of the downward top end and a second link 42 having a projection 49, which is fitted to the breast side of the shoulder 71 of the reagent 7, on the side of the downward top end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric massage unit capable of massaging a subject's shoulder from both sides of his back and chest, and a chair-type massage machine provided with the unit.

[0002]

2. Description of the Related Art A conventional massage unit of this type directly converts the driving force of a motor into a pinching operation. When attached, there was a feeling of oppression in the kneading operation, and it was felt that the fit with the shoulder was poor. Therefore, the applicant previously proposed a chair-type massage machine shown in FIGS. 7 to 11 (Japanese Patent Application No. 11-2931).
No. 25 (hereinafter referred to as the old application).

As shown in FIG. 7, the massager of the prior application has a massage unit (2) above a backrest (11) of a chair.
At the center in the width direction of the backrest (11), a well-known kneading and hitting unit (13) provided with left and right mizama balls (12) (12) is provided so as to be able to move up and down. Massage unit (2)
Arm (35) on eccentric shaft (34) driven by motor (31)
The drive device (3) is constituted by pivotally supporting the upper base end of the arm (3).
5) A four-bar link (4a) is attached to the lower end. The four-bar link (4a) has a first link (4) having a protruding portion (48) on the back side of the shoulder (71) of the subject (7) at the free end facing downward.
1), a second link (42) having a projection (49) on the chest side of the shoulder (71) of the subject (7) on the distal end side, and projections (48) and (49) of the first and second links, respectively. Third, the base side of which is pivotally connected to
The third link (43), which is comprised of a fourth link (43) and (44a) and is located below the fourth link (44a), projects forward from the downward end of the arm (35) substantially perpendicularly and integrally. Has been established.

The first link of the third and fourth links (43) and (44a)
The length L1 between the pivots (43a) and (40a) on (41) is the second link.
It is greater than the length L2 between the pivots (43b) and (40b) on (42). A pivot (43) pivotally supporting the second link (42) and the third link (43).
The length L4 from b) to the protrusion (49) of the second link (42) is from the pivot (43a) pivotally supporting the third link (43) and the first link (41) to the first link (41). Is longer than the length L3 up to the protrusion (48). The second link (42) is a second link by a spring (47).
The projection (49) of (42) is biased in a direction away from the projection (48) of the first link (41).

The arm (35) is connected to the four-bar link (4a) by the eccentric rotation of the eccentric rotation shaft (34) while keeping the lower end of the arm (35) inclined obliquely forward. A link plate (51) that regulates the inclination of the arm (35) is linked so that the diagonally forward and downward pressing and the diagonally rear and upward lifting operation are performed.

The back side of the shoulder (71) of the subject (7) is the first link.
Pressing the projection (48) of (41) deforms the four-bar link (4a),
When the position of (71) is stable, the position of the projection (48) is almost determined. The four-bar link (4a) is turned into the subject (7) by the driving means (3).
When a force is applied in the direction of pressing the shoulder (71), the four-node link (4a) moves to the chest side of the shoulder centering on the protrusion (48).

On the first link (41), the projection (49) on the second link (42) is longer than the distance L3 from the projection (48) to the pivot (43a) of the third link (43). From the third link (43)
Of the third link (43) on the first link (41) and the fourth link (44a).
The length L1 between a) and (40a) is longer on the second link (42).
The respective pivots (43b) (4) of the third link (43) and the fourth link (44a)
0b) is longer than the length L2 between the two links (4a) while moving toward the chest, while the tip of the second link (42) is deformed so as to approach the tip of the first link (41). Moving. As a result, the projection (48) at the tip of the first link (41) and the second link (4)
2) The operation of pinching the shoulder (71) by the projection (49) at the tip is performed.

When the four-bar link (4a) is pulled away from the shoulder (71) by the driving means (3), the shoulder
The four-bar link (4a) returns to the initial state pressed by the shoulder, centering on the protrusion (48) hitting the (71), the tip of the second link (42) separates from the first link (41), The pinch of the shoulder (71) between the projection (48) and the projection (49) is released. During the operation of the driving means (3), the shoulder (71) is alternately opened and closed by the projection (48) of the first link (41) and the projection (49) of the second link (42). Then, a pinching and rubbing operation is performed.

The position of the projection (48) of the first link (41), which is the starting point of the pinching operation, is determined by the shoulder (7) of the subject (7) with respect to the projection (48).
It is determined by the pressing force of 1), and instead of directly converting the force of the driving means (3) to the kneading force, it transforms and converts the four-node link (4a), so that the trajectory of the kneading operation is constant. In addition, a kneading operation can be realized in accordance with the posture of the subject (7) and the pressing force of the shoulder (71) of the subject (7) against the protrusion (48) of the first link (41). In addition, the fitting of the protruding portions (48) and (49) to the shoulder (71) is superior to that of the conventional one in which the trajectory of the kneading operation is constant.

[0010] Even in the chair type massage machine of the old application having the above-mentioned excellent effect, the gripping force for kneading the shoulder (71) by the contact of the link with the shoulder (71) of the subject (7) is obtained. It was found that the picking motion was not strong, the kneading power was monotonous and the feeling was unsatisfactory. The present invention is to clarify a massage unit capable of imparting strength to a kneading force without using special power, and a massage machine using the unit.

[0011]

A massage unit according to the present invention has a protrusion which is applied to a back side of a shoulder (71) of a subject (7) at a distal end side.
The first link (41) having (48), the subject (7) shoulder on the tip side
A second link (42) having a projection (49) corresponding to the chest side of (71), and a third link pivotally connected to the base end side of each of the projections (48) and (49) of the first and second links. (43) The fourth link (43), which is located above the third link (43) and protrudes from the first link (41) and the second link (42) and is pivotally connected to each other by a pivot (81). The length L1 between the pivots (43a) and (40a) of the third and fourth links (43) and (44) on the first link (41) is composed of a link (44) and a fifth link (45). And the third and fifth links (4) on the second link (42).
3) 5 which is larger than the length L2 between the pivots (43b) and (40b) of (45).
The joint (4) and the entire 5-joint link centered on the projection (48) of the first link (41) connected to the 5-joint link (4) are the subject (7).
A driving means (3) for applying a force in the direction of pushing toward the shoulder (71) and in the opposite direction, the fourth link (44) and the fifth link (44).
With respect to the pivot connection (8) of (45), the movement of the pivot connection (8) is restricted to a certain range, and the fourth link (44) and the fifth
Restriction means to prevent the angle of the link (45) from narrowing
(9) is provided.

In the chair type massage machine of the present invention, the massage unit (2) is provided on the backrest (11) of the chair.

[0013]

[Operation and Effect] The basic kneading operation is the same as the kneading operation of the massage unit of the old application, but in the present invention, the fourth link (44a) of the old application is replaced with the fourth link (44) and the fifth link (44).
The link (45) is composed of two links to form a five-node link (4) as a whole, and the movement of the pivotal connecting portion (8) of the fourth link (44) and the fifth link (45) is restricted. Since the range is regulated to a certain range according to 9), the opening angle of the fourth link (44) and the fifth link (45) is suppressed from being reduced. This prevents the protrusions (48) and (49) of the second link (42) from coming apart while the protrusion (48) of the third link (43) approaches the protrusion (48). The force acts and the kneading force increases.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a chair-type massager in which a massage unit (2) is attached to a backrest (11) of a chair having a seat (10) and a backrest (11) so as to be adjustable in height. 1 shows a machine (1). As shown in FIGS. 2 and 3, the massage unit
(2) is configured on a U-shaped chassis (36) with the opening facing backward, a pillow (6) is fixed to the upper front of the chassis (36), and a motor (31) is mounted on the rear. I have.

The rotating main shaft (3) extends right and left through the chassis (36).
0) is provided and the motor is connected via a worm gear (not shown).
Linked to (31). As shown in FIG. 6, both ends of the rotary main shaft (30) have different phases and different amounts of eccentricity.
7) and the second eccentric shaft (34) are protruded. 1st eccentric shaft (37)
The following members attached to the second eccentric shaft (34) are opposite to each other on the left and right eccentric rotating shafts (37) (34), (37) (34) (symmetrical left and right).
And only one of the eccentric rotating shafts (37) and (34) will be described. As shown in FIGS. 2 and 3, the upper base end of the arm (35) is pivotally supported on the outer second eccentric shaft (34), and the arm (35)
A five-bar link (4) is attached to the lower end of the arm so as to be deformable in a plane parallel to the rotation plane of the arm (35).

The five-bar link (4) has a protruding portion (48) on the free end side facing downward on the back side of the shoulder (71) of the subject (7).
A link (41), a second link (42) having a projection (49) on the chest side of the shoulder (71) of the subject (7) on the distal end side, and projections (48) (49) of the first and second links. )), A third link (43) pivotally connected at the proximal end side, located above the third link (43),
The fourth link (44) and the fifth link (44) which are pivotally protruded from the first link (41) and the second link (42) and are pivotally connected to each other by a pivot (81).
A link (45). The third link (43)
The arm (35) is integrally and protruded forward at a substantially right angle from the downward end of the arm (35).

The first link (4) of the third and fourth links (43) and (44)
The length L1 between the pivots (43a) and (40a) on the first link (4) is equal to the length of the second link (4).
2) The length between the pivots (43b) and (40b) of the third and fifth links (43) and (45) is larger than L2. Projection of the second link (42) from the pivot (43b) pivotally supporting the second link (42) and the third link (43)
The length L4 up to (49) is the third link (43) and the first link (4
Projection (48) of the first link (41) from the pivot (43a) pivotally supporting 1)
Is longer than the length L3.

The projection (48) of the first link (41) imitates the thumb of a human finger, and the projection (49) of the second link (42) imitates a row of fingers excluding the thumb. The first link (41) is formed to be longer than the protrusion (48), and the protrusion (48) imitating the thumb is located inside the protrusion (49) imitating the other finger row. I have. That is,
The projection (48) imitating the thumb is replaced with the projection (4
It is closer to the neck of the subject (7) than to 9).

The arm (35) is kept substantially in a state where the free end of the arm (35) is inclined obliquely forward and downward,
A regulating member that regulates the inclination of the arm (35) so that the five-node link (4) is pressed obliquely forward and downward by the eccentric rotation of the second eccentric shaft (34) and the diagonally rearward upward operation is performed.
(5) is linked. The regulating member (5) of the embodiment is a link plate (5
In 1), the link plate (51) has a base end pivotally supported by a side surface of the chassis (36), and a diagonally forward and upward end pivotally connected to a substantially central portion of the arm (35). Arm (35) above, motor
The worm gear (31), the worm gear connecting the arm (35) and the motor (31), and the second eccentric shaft (34) constitute driving means (3) for pinching and kneading operation described later.

The fourth link (44) and the fifth link (45) are provided with a pivotal connection (8) that restricts the movement of the pivotal connection (8) to a certain range. ) And a restricting means (9) for suppressing the angle of the fifth link (45) from narrowing.
The regulating means (9) of the embodiment is provided with a third link (4) on the arm (35).
3) A first pulley (91) is rotatably provided on the side,
A pivot (81) in which a second pulley (92) is attached to the first eccentric shaft (37) of (30), and the fourth link (44) and the fifth link (45) are pivotally connected.
To one end of a wire (93) such as a wire, a belt, etc.
(93) is drawn around the second pulley (92) through the first pulley (91), and is fixed to the fixed point (96) on the chassis (36) via the spring (95). The second pulley (92) is provided with a cover (94) for preventing the rope (93) from coming off. The above regulation means
In the configuration of (9), the spring (95) can be omitted.

As shown in FIG. 2, the rotation center P of the rotating spindle (30)
1, the eccentric rotation center P2 of the second pulley (92) and the arm (3
The eccentric rotation center P3 of 5) is located at the top of the virtual triangle. The amount of eccentricity of the first eccentric shaft (37) of the second pulley (92) is larger than the amount of eccentricity of the second eccentric shaft (34) of the arm (35) from the rotation center P1 of the rotating main shaft (30).

The eccentric rotation of the second pulley (92) pulls or loosens the cable (93) locked on the connecting pivot (81) of the fourth link (44) and the fifth link (45). However, in the embodiment, when the arm (35) has a large inclination angle as shown in FIGS. 2 to 4, that is, when the first link (41) and the second link (42) are used, the subject (7) The first eccentric shaft of the second pulley (92) so that the closer to the end of the one-by-one operation of massaging the shoulder (71), the more strongly the rope (93) is pulled.
(37) and the second eccentric shaft (34) of the arm (35) are out of phase.

When the subject (7) sits on the chair and leans on it, the back side of the shoulder (71) presses the projection (48) of the first link (41) and deforms the five-bar link (4). Let it. Since the leaning posture of the subject (7) is regulated by the backrest (11), the position of the protrusion (48) is almost determined with the position of the shoulder (71) being stable. With the second eccentric shaft (34) of the driving means (3), the arm (35) pushes the entire five-bar link (4) diagonally downward and forward, and the reverse operation is repeated. When the five-bar link (4) receives a force in the direction of pushing the shoulder (71), the projection (48) almost at the fixed position as described above.
The five-node link (4) moves to the chest side of the shoulder centering around.

On the first link (41), the projection (49) on the second link (42) is longer than the distance L3 from the projection (48) to the pivot (43a) of the third link (43). From the third link (43)
Of the third link (43) and the fourth link (44) on the first link (41), the distance L4 to the pivot (43b) of the third link (43) is large.
The length L1 between 3a and (40a) is greater on the second link (42) than the respective pivots (43b) and (40b) of the third link (43) and the fourth link (44).
Since the distance L2 is larger than the length L2, when the five-link (4) moves toward the chest, the tip of the second link (42) is connected to the first link (4).
It moves while deforming so as to approach the tip of 1). As a result, the operation of pinching the shoulder (71) by the projection (48) at the tip of the first link (41) and the projection (49) at the tip of the second link (42) is performed.

In the present invention, in addition to the above-described kneading operation, FIG.
As shown in the figure, the projections (48) (4) of the first link (41) and the second link (42)
When the gap is opened from the opened state to the closed state as shown in FIG. 4, the eccentric rotation of the second pulley (92) causes the rope (9) to move.
3) is pulled, and a force is exerted such that the angle formed by the fourth link (44) and the fifth link (45) becomes large, whereby the first link (41) and the second link (42) become large. Because of the closing, the force of rubbing the shoulder (71) of the subject (7) by the two links (41) and (42) increases.

In this embodiment, the main spindle (30) rotates clockwise from the state shown in FIG. 2, and the arm (35) gradually falls down, so that the projection (48) of the first link (41). When the subject (7) pushes the shoulder (71) of the subject (7) obliquely upward, that is, the first link (41) and the second link (42) gradually move with the operation of rubbing the shoulder (71).
As a result, the pinching force is increased, so that the human body feels as if the massage is being performed, and a more effective massage can be performed.

When the five-bar link (4) is pulled away from the shoulder (71) by the driving means (3), the shoulder
The four-bar link (4a) returns to the initial state pressed by the shoulder, centering on the protrusion (48) hitting the (71), the tip of the second link (42) separates from the first link (41), The pinch of the shoulder (71) between the projection (48) and the projection (49) is released. During the operation of the drive means (3), the projection (48) of the first link (41) and the projection (49) of the second link (42) alternately clamp the shoulder (71) and open the clamp. ,
A pinching massage operation is performed.

As described above, in the embodiment, the projection (48) of the first link (41) imitates the thumb of a human finger, and the second link (41).
The protrusion (49) of (42) is the first link
The projecting part (48) formed to be longer than the projecting part (48) of (41), and the projecting part (48) imitating the thumb is more subject than the projecting part (49) imitating other finger rows.
Since the subject (7) is located close to the neck, the subject (7) can obtain a feeling as if he / she is rubbing the shoulder (71) with human hands from behind.

In the massage unit (2) of the present invention, the position of the protrusion (48) of the first link (41), which is the starting point of the pinching operation, is determined by the position of the shoulder (71) of the subject (7) relative to the protrusion (48). ) Is determined by the pressing force, and since the force of the driving means (3) is not directly converted into the kneading force but converted by deforming the five-bar link (4), the trajectory of the kneading operation is not constant. ,subject
A kneading operation according to the posture of (7) or the pressing force of the shoulder (71) of the subject (7) against the protrusion (48) of the first link (41) can be realized. In addition, the fitting of the protruding portions (48) and (49) to the shoulder (71) is superior to that of the conventional one in which the trajectory of the kneading operation is constant.

Further, the five-bar link (4) corresponds to the first link (41).
When the pressing of the shoulder (71) against the projection (48) of the subject is released, the five-bar link (4) itself can be freely deformed, so that the subject (7) moves forward with respect to the projection (48). The second
The presence of the link (42) indicates that the subject (7) is a massage unit
There is no hindrance to leaving (2).

In the present invention, the rotation center P1 of the rotation spindle (30) is used.
, The eccentric rotation center P2 of the second pulley (92) and the arm
By changing the phase shift of the eccentric rotation center P3 in (35), the timing at which the kneading force becomes strong can be changed. Further, the difference in the magnitude of the eccentricity between the second pulley (92) and the arm (35) with respect to the rotation center P1 of the rotating main shaft (30) can make the difference in the strength of the kneading force larger or smaller.

In the embodiment of the present invention, the restricting means (9) for suppressing the narrowing of the angles of the fourth link (44) and the fifth link (45) is not limited to the above-mentioned embodiment, but may be the two points shown in FIG. As shown by the chain, from the chassis (36), a stop member (9) located above the pivotal connection (8) of the fourth link (44) and the fifth link (45).
By projecting 7) and applying the pivot connecting portion 8 to the contact portion 97, it is possible to prevent the angle between the fourth link 44 and the fifth link 45 from narrowing.

The present invention is not limited to the configuration of the above-described embodiment, but may include a massage ball below the massage unit (2) if necessary, such as the massager (1) of the old application shown in FIG. (12) Various modifications are possible within the scope of the claims, including a kneading and hitting unit (13) by (12). .

[Brief description of the drawings]

FIG. 1 is a perspective view of a chair-type massage machine of the present invention.

FIG. 2 is a side view of the massage unit.

FIG. 3 is a perspective view of the same.

FIG. 4 is a side view of the massage unit in a state where a first link and a second link are closed.

FIG. 5 is a perspective view of the same.

FIG. 6 is an explanatory diagram for attaching a second pulley and a cable to a rotating main shaft.

FIG. 7 is a perspective view of the chair type massage machine of the old application.

FIG. 8 is a perspective view of the same use state.

FIG. 9 is a perspective view in which the pinching and kneading mechanism of the old application is symmetrically arranged.

FIG. 10 is a side view of the massage unit of the old application.

FIG. 11 is an explanatory diagram of movements of a first link and a second link of the above.

[Explanation of symbols]

 (1) Chair type massage machine (2) Massage unit (3) Driving means (31) Motor (34) 2nd eccentric shaft (35) Arm (37) 1st eccentric shaft (4) 5-bar link (41) 1st Link (42) second link (43) third link (44) fourth link (45) fifth link (5) regulating member (9) regulating means (91) first pulley (92) second pulley (93) Rope

Claims (7)

[Claims] 1. A first link (41) having a protruding portion (48) on the back side of a shoulder (71) of a subject (7) on a distal side, and a chest side of a shoulder (71) of the subject (7) on a distal side. A second link (42) having a projection (49) corresponding to the second link (42) and a third link (43) pivotally connected at the base end side to the projection (48) (49) of the first and second links, respectively. 3 links
The fourth link (44) and the fifth link, which are located above the (43) and are protruded from the first link (41) and the second link (42) and are pivotally connected to each other by a pivot (81). (45), and a pivot (4) of the third and fourth links (43) and (44) on the first link (41).
The length L1 between 3a) and (40a) is the third length on the second link (42).
The five-link (4) that is larger than the length L2 between the pivots (43b) and (40b) of the fifth link (43) (45), and the first link (41) connected to the five-link (4). ) Is provided with driving means (3) for applying a force in the direction of pushing the entire five-bar link toward the shoulder (71) of the subject (7) and the opposite direction around the protrusion (48) of the subject, and the fourth link ( 44) and the pivotal link (8) of the fifth link (45), the movement of the pivotal link (8) is regulated within a certain range,
A massage unit provided with a regulating means (9) for suppressing the angle of the (44) and the fifth link (45) from becoming narrow. The driving means (3) has one end connected to the first link (41).
The other end of the arm (35) pivotally connected to the arm (35) is connected to an eccentric shaft (34) on a rotating main shaft (30) rotated by a motor (31), and the arm (35) has a tilt of the arm. The massage unit according to claim 1, wherein a regulating member (5) for regulating the range is connected. 3. The control means (9) comprises a fourth link (44) and a fifth link (44).
Search for the link (45) near the pivot connection (8) and the fixed point (96) (93)
3. The massage unit according to claim 1, wherein the massage unit is formed by being connected to the cable (93) by a spring (95). 4. 4. A first pulley (91) is provided on the third link (43) side of the arm (35), and a second pulley (92) having a larger eccentric amount on the rotating main shaft (30) than the eccentric shaft (34). ), And a rope (93) having one end locked near the pivot connection portion (8) of the fourth link (44) and the fifth link (45) is connected to the first pulley (91) and the second pulley (92). Through the fixed point
The massage unit according to claim 2 or 3, wherein the massage unit is locked to (96). 5. The massage unit according to claim 4, wherein the respective centers of the second pulley (92) and the eccentric shaft (34) are out of phase. 6. A pillow (6) supporting a head (72) of a subject (7), symmetrically provided with five-node links (4) (4) so that both shoulders of the subject can be massaged simultaneously. 6. The massage unit according to any one of 1 to 5. 7. A chair-type massage machine in which the massage unit (2) according to any one of claims 1 to 6 is provided above a backrest (11) of the chair.