JP4104449B2 - Chair type massage machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair-type massage machine that enables tilting of a massage unit itself, and allows a massage finger to protrude from the back of a chair by tilting the massage unit to perform a highly effective massage.
[0002]
[Prior art]
There is a chair-type massage machine where the user sits down and receives massage from the neck, shoulders, back and waist.
The chair type massage machine is configured by arranging a massage unit so as to be movable up and down inside the back of the chair. In the massage unit, a pair of left and right treatment fingers are arranged so as to protrude from the backrest.
In the massage machine, the user is massaged by moving the treatment finger three-dimensionally in the left, right, up, down, and front and back directions.
[0003]
The treatment finger massages the user while slightly protruding from the backrest. For this reason, the treatment finger does not reach the upper part of the shoulder of the user.
Therefore, in order to enhance the massage effect by the treatment finger, there is a massage machine in which the treatment finger is protruded forward from the normal treatment position and reaches the upper part of the shoulder of the user (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A 63-145656 (Column 5, lines 1 to 19 and FIG. 5)
[0005]
[Problems to be solved by the invention]
The conventional massage machine has a configuration in which the massage unit does not move back and forth and only the treatment finger protrudes forward, so that the amount of protrusion is limited, and it is difficult to secure a large amount of protrusion.
In addition, when projecting, some of the functions of hitting and itching were restricted.
[0006]
The objective of this invention is providing the chair type massage machine which can take large the amount of protrusion of a treatment finger by setting it as the structure which can protrude a massage unit itself with respect to a backrest.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the chair type massage machine of the present invention is
The backrest (12) deployed in the chair on which the user sits,
Guide rails (14) (14) arranged on the left and right along the longitudinal direction of the backrest (12) inside the backrest (12) ,
A massage unit (20) comprising a pair of treatment fingers (30) and (30) protruding from the backrest (12), reciprocating up and down along the guide rails (14) and (14) ;
The upper roller (65) (65) and the lower roller (23) (23), which are arranged on the upper and lower sides of the massage unit (20) and fit into the left and right guide rails (14) (14) ,
The massage unit (20) includes a protruding mechanism (60) for tilting back and forth around the lower rollers (23) and (23) with respect to the guide rails (14) and (14) of the backrest (12) ,
The protruding mechanism (60) includes a crank pin (64) (64) that is rotatably fitted to the upper roller (65) (65), and the crank pin (64) (64) supported by the massage unit (20 ). A crank mechanism (61) having a crank shaft (62) for supporting the crank shaft (62) in an eccentric position, and a projecting motor (69) for rotating the crank shaft (62) ,
By rotating the crankshaft (62) , the massage unit (20) is tilted back and forth around the lower rollers (23) and (23) .
[0008]
According to the chair type massage machine of the present invention, when the massage unit (20) itself is tilted back and forth around the lower rollers (23) and (23) by the protruding mechanism (60), the treatment finger (30) (30) protrudes forward. When the massage unit (20) is pushed out with the treatment finger (30) (30) behind the shoulder, the treatment finger (30) (30) will reach the upper part of the shoulder sufficiently, so a highly effective shoulder It is possible to apply massage on the top of the head and hit it.
[0009]
Further, acupressure massage can be performed by protruding the massage unit (20) itself by the protruding mechanism (60) while the treatment fingers (30) and (30) are in contact with the back, waist, and the like.
[0010]
Further, by adjusting the amount of protrusion of the massage unit (20), it is possible to change the contact strength (strength) of the treatment fingers (30) and (30) to the user and perform a highly effective massage.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In the chair type massage machine, a backrest (12) is connected to a rear end of a seat on which a user sits down so as to be tiltable and positionable with a frame or the like. The backrest (12) is surrounded on the outer periphery by a batter, a cushion or the like (not shown).
[0012]
Internal structure of the backrest A pair of left and right guides extending in the vertical direction along the longitudinal direction of the backrest (12) is provided in the backrest (12) as shown in Figs. Rail (14) is deployed. Each of the guide rails (14) and (14) has a U-shaped cross section and is disposed so that the grooves face each other. In the groove, a rack (16) is formed on the opening side (see FIG. 3). A massage unit (20), which will be described later, is attached to the guide rails (14) and (14) so as to be movable up and down.
[0013]
As shown in FIGS. 1 to 3, the massage unit (20) includes four rollers (23), (23), (65), and (65) that protrude from the main chassis (21) and guide rails (14) and (14). ) And can be moved up and down. All the components of the massage unit (20) are mounted on the main chassis (21).
As shown in FIGS. 3 and 4, the main chassis (21) is open at the rear and sides, and as shown in FIGS. 3 and 4, the auxiliary chassis (22) and (22) are vertically fixed and spaced apart. Yes.
[0014]
The lower rollers (23) and (23) pass through the lower part of the auxiliary chassis (22) and (22) to the left and right, and fit on the tip of the vertical rotation shaft (24) protruding from both sides of the main chassis (21). The gears (25) and (25) that mesh with the racks (16) and (16) of the guide rails (14) and (14) are fixed to the vertical rotation shaft (24) inside the rollers (23) and (23). ing. The vertical rotation shaft (24) is connected to the vertical motor (26) via the speed reducer (27), and is engaged with the racks (16) and (16) by driving the vertical motor (26). The gears (25) and (25) rotate, and the massage unit (20) moves up and down along the guide rails (14) and (14). The reduction gear (27) can be composed of a combination of a pulley and a belt, a worm and a worm wheel. In FIG. 4, a belt connecting the pulleys of the reduction gear (27) is omitted.
[0015]
Structure, massage, and hitting mechanism of treatment fingers The treatment fingers (30) and (30) for massaging a user are an abbreviation of the auxiliary chassis (22) and (22) as shown in FIGS. The kneading shaft (40) pivotally supported at the center is connected to a hitting shaft (50) supported below the kneading shaft (40). As shown in FIGS. 3 and 4, the kneading shaft (40) and the hitting shaft (50) are respectively a kneading motor (41) and a hitting motor (51) mounted on the main chassis (21). They are linked via (52). The speed reducer (42) between the stagnation shaft (40) and the stagnation motor (41) can be composed of a combination of a pulley and a belt, and a worm and a worm wheel. In FIG. 4, the belt connecting the pulleys of the reduction gears (42) and (52) is omitted.
As shown in FIGS. 4 and 5, the treatment fingers (30) and (30) are inclined to the stagnation shaft (40) and pivotally supported in an eccentric state, and are opened in the front surface of the main chassis (21). (21a) swinging levers (33), (33) projecting forward, and massage arms (32) pivoted at the tip of the swinging levers (33), (33) and bent in the shape of a square ) (32) and massaging balls (31) (31) (31a) (31a) pivoted above and below the massage arms (32) (32).
[0016]
As shown in FIGS. 4 and 5, eccentric cams (53) and (53) whose phases are shifted from each other by 180 degrees are pivotally supported on the hitting shaft (50), and both eccentric cams (53) and (53) are The universal joints (54) and (54) attached to the rear end of the swing levers (33) and (33) on the side of the squeezing shaft (40) are connected via rods (55) and (55).
[0017]
The swing lever (33) (33) is pivotally supported on the kneading shaft (40) in an inclined state, and the swing lever (33) (33) is connected to the rod (45) (45), respectively. Therefore, when the kneading shaft (40) is rotated, the tip of the swing lever (33) (33) moves to the left and right. As a result, the massage arms (32) and (32) swing left and right, and the upper kneading balls (31) and (31) and the lower kneading balls (31a) and (31a) repeatedly approach and separate. While reciprocating, the kneading operation is performed.
[0018]
Further, when the hit motor (51) is rotated, the treatment fingers (30) and (30) are reciprocated in the vertical direction via the rods (55) and (55) that are eccentrically connected to the hit shaft (50). A tapping action is performed.
[0019]
Projection mechanism (60)
The massage unit (20) is provided with a protrusion mechanism (60) for moving the massage unit (20) back and forth as shown in FIGS. Examples of the protruding mechanism (60) include the following crank mechanism (61) and link mechanism (70).
As shown in FIGS. 5 and 6, the crank mechanism (61) includes a crankshaft (62) disposed in front of the stagnation shaft (40) and upper rollers (65) (65) (see FIG. 6). Crank pins (64) and (64) (see FIG. 5) that are rotatably fitted are connected by crank arms (63) and (63). The crankpins (64) and (64) are eccentric with respect to the crankshaft (62), so when the crankshaft (62) is rotated, the crankpins (64) and (64) are centered on the crankshaft (62). Draw a circumferential orbit. In the illustrated embodiment, the crankshaft (62), the crank arms (63) (63), and the crankpins (64) (64) are composed of a single metal rod, as shown in FIG. The crankshafts (62) and (62) are pivotally supported on the main chassis (21) by bearings (62a) and (62a).
[0020]
As shown in FIG. 3, support pieces (22a) and (22a) having bearings (22b) and (22b) are vertically projected on the auxiliary chassis (22), and the bearings (22b and 22b) are provided on the auxiliary chassis (22b). As shown in FIGS. 3, 4 and 6, a tilting screw shaft 67 having a thread groove is pivotally supported. The upper end of the tilting screw shaft (67) is connected to a protruding motor (69) via a speed reducer (68) comprising a pulley and a belt (not shown in FIG. 4).
A nut (71) is screwed into a portion of the tilting screw shaft (67) where the screw is cut. The nut (71) can be made of resin, and a link mechanism (70) is connected to the resin nut (71) as shown in FIGS. The link mechanism (70) can be composed of a link piece (72) and a link piece (78).
In the following, an example in which the link piece (72) is composed of a first link piece (73) and a second link piece (75) configured to be slidable with respect to each other so as to be stretchable in the longitudinal direction will be described. To do.
The first link piece (73) is pivotally supported by the resin nut (71) so as to be tiltable in the front-rear direction, and a slide shaft (74) is provided in the vicinity of the base end side of the first link piece (73). Has been.
The second link piece (75) is composed of a pair of members that sandwich the first link piece (73) from both sides, and has a long hole (76) in the longitudinal direction. The long hole (76) of the second link piece (75) is slidably fitted to the slide shaft (74) of the first link piece (73).
Further, as shown in FIG. 6, a shaft (75a) is projected from the tip of the second link piece (75), and a spring (77) is stretched between the slide shaft (74). It is installed. The spring (77) urges the second link piece (75) toward the resin nut (71). In the unloaded state, the spring (77) has the second link piece (75) connected to the resin nut. It is in the state of being most drawn to the (71) side.
[0021]
A third link piece (78) is pivotally supported on the shaft (75a) of the second link piece (75). The third link piece (78) is a link piece bent forward at the center, and the tip of the third link piece (78) is fixed to the crankshaft (62).
[0022]
When the resin nut (71) is positioned above the tilting screw shaft (67), the third link piece (78) is drawn toward the second link piece (75), and the massage unit (20) ( The main chassis (21) is in the lowest position (see FIG. 1).
[0023]
When the tilting screw shaft (67) is rotated from this state and the resin nut (71) is moved downward as shown in FIG. 7 (in the direction of arrow A in FIG. 7), the resin nut (71) Along with the downward movement, the second link piece (75) pulls the engaging portion with the third link piece (78) downward, and the third link piece (78) is centered on the crankshaft (62). Rotate. Since the third link piece (78) and the crankshaft (62) are fixed, the crankshaft (62) rotates together with the third link piece (78).
[0024]
The crank pins (64) and (64) at both ends of the crankshaft (62) can be moved only along the guide rails (14) and (14) by the rollers (65) and (65). Due to the rotation of the shaft (62), the massage unit (20) tilts about the vertical rotation shaft (24). Since the vertical rotation shaft (24) is provided below the massage unit (20), as shown in FIG. 2, the treatment fingers (30) and (30) protrude forward by tilting the massage unit (20). (Indicated by arrow B in FIG. 7).
[0025]
The treatment fingers (30) and (30) reach the upper part of the shoulder of the user by protruding the treatment fingers (30) and (30) at the shoulder position of the user. By driving the kneading motor (41) and / or the tapping motor (51) in this state, the upper part of the shoulder of the user can be effectively massaged.
[0026]
In addition, when the treatment fingers (30) and (30) are located below the shoulder position of the user, i.e., at the back and waist positions, the treatment fingers (30) and (30) are protruded, Shiatsu massage is performed on the back and waist of the user. Also, in this state, the rolling motor in a state where the treatment fingers (30) and (30) are strongly pressed against the user by rotating the vertical motor (26) and raising and lowering the massage unit (20). Can be applied.
[0027]
When the tilting screw shaft (67) is reversely rotated from the state shown in FIG. 2, the resin nut (71) is moved upward, and, conversely, the massage unit (20) is retracted, and the treatment finger (30) (30) is pulled back into the backrest (see FIG. 1). In the retracted state, the same massage can be performed as before.
[0028]
By adjusting the rotation of the tilting screw shaft (67), that is, the position of the resin nut (71) relative to the tilting screw shaft (67), the amount of protrusion of the massage unit (20) can be adjusted. Further, the maximum amount of protrusion can be adjusted by changing the length of the crank arms (63) (63).
[0029]
The amount of protrusion of the massage unit (20) can be detected by the amount of protrusion detection means (79). As the protruding amount detecting means (79), for example, as shown in FIG. 6, a variable resistor (79) that abuts on the third link piece (78) is provided, and the third link is provided by the variable resistor (79). What is necessary is just to measure the change of the resistance value with the rotation angle of the piece (78).
Since the crankshaft (62) also rotates integrally with the third link piece (78), the protruding amount detection means (79) may be provided on the crankshaft (62).
[0030]
Other embodiments of the link mechanism (70) In the above, the link piece (72) in which the first link piece (73) and the second link piece (75) are slidable by spring bias, and the third The crankshaft (62) and the resin nut (71) are connected by a link mechanism (70) that links the link piece (78). The first link piece (73) and the second link piece (75) are made slidable when the treatment fingers (30) and (30) are projected forward, and the treatment fingers (30) and (30) are moved forward from the front. This is to allow the treatment fingers (30), (30) (massage unit (20)) to be slightly retracted when force is applied. As a result, when the treatment finger (30) (30) protrudes, the treatment finger (30) (30) exerts a strong back force when the user presses his back against the backrest (12). The massage unit (20) is retracted. For this reason, it is possible to prevent the user from feeling pain.
[0031]
When the above effects are not required, the first link piece (73) and the second link piece (75) are not formed of separate members, but the third link piece (78) and the resin nut (71 ) May be directly connected by one link piece (72).
[0032]
In addition, since the sliding amount with respect to the 1st link piece (73) of a 2nd link piece (75) respond | corresponds to the force added to a treatment finger (30) (30), the sliding amount of a 2nd link piece (75) Based on the above, it is also possible to provide means (79a) for detecting which part of the body of the user the treatment fingers (30), (30) are in contact with. In this case, as shown in FIG. 6, the slide amount is detected by energizing the variable resistor (79a) or the like so that the first link piece (73) contacts the second link piece (75). This can be done.
Lower the massage unit (20) from the state where the treatment fingers (30), (30) are not in contact with the user, i.e., the massage unit (20) is above the backrest (12) When the finger (30) (30) hits the shoulder of the user, the treatment finger (30) (30) receives an upward force.
As a result, the second link piece (75) slides upward against the biasing force of the spring (77). The slide amount of the second link piece (75) is detected by the variable resistor (79a), and it can be detected from the detected value that the position is the shoulder of the user.
[0033]
Arm lock mechanism (80)
The protrusion mechanism (60) may further include an arm lock mechanism (80) that causes the treatment fingers (30) and (30) to protrude forward in accordance with the protrusion of the massage unit (20).
As shown in FIG. 7, the arm lock mechanism (80) includes a bent joint of the massage arms (32) and (32) and the crankshaft (62), respectively, as a universal joint (81) (81) (82). The arm lock rods (83) and (83) are connected via (82). The universal joints (82) and (82) on the crankshaft (62) side, when the massage unit (20) is protruded most (see FIG. 2), the kneading balls (31 on the upper side of the massage arms (32) and (32)) ) (31) is attached to the position where it can be pushed forward most.
[0034]
When the crankshaft (62) is rotated and the massage unit (20) is pushed out as described above, the universal joints (82) and (82) rotate with the rotation of the crankshaft (62), and the arm lock rod ( 83) Push (83) upward. As a result, the arm lock rod (83) (83) rotates the massage arm (32) (32) forward, and the upper and lower kneading balls (31) (31a) are almost parallel to the backrest (12). The upper kneading balls (31) protrude forward with respect to the main chassis (21).
In addition to projecting the massage unit (20) by the above-mentioned projecting mechanism (60), the massaging balls (31) are projected to the top of the shoulder sufficiently by projecting the massaging balls (31), and effective massage Can be applied.
In this state, the kneading shaft (40) and / or the hitting shaft (50) are rotated, whereby itching and / or hitting massage can be performed with the upper kneading balls (31) protruding.
If the above operation is performed while the treatment fingers (30) and (30) are in contact with the back and waist of the user, acupressure massage with the upper kneading balls (31) can be performed.
[0035]
Also, when the crankshaft (62) is rotated in the reverse direction and the massage unit (20) is retracted, the universal joints (82) (82) are connected to the arm lock rods (83) (83). Pull downward. As a result, the arm lock rod (83) (83) rotates the massage arm (32) (32) backward, and the upper and lower kneading balls (31) (31a) are almost parallel to the backrest (12) You can return to and perform a normal massage.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a backrest of a chair type massage machine.
FIG. 2 is a cross-sectional view of a backrest showing a state in which a massage unit and treatment fingers are protruded forward.
FIG. 3 is a rear view of the massage unit.
FIG. 4 is a perspective view of the massage unit as viewed obliquely from the rear right.
FIG. 5 is a perspective view showing a main part of the massage unit taken out.
FIG. 6 is a perspective view of the massage unit as viewed obliquely from the left rear.
FIG. 7 is a cross-sectional view showing an essential part of the massage unit.
[Explanation of symbols]
(20) Massage unit
(30) Treatment finger
(60) Projection mechanism
(61) Crank mechanism
(70) Link mechanism
(80) Arm lock mechanism

Claims (2)

The backrest (12) deployed in the chair on which the user sits,
Guide rails (14) (14) arranged on the left and right along the longitudinal direction of the backrest (12) inside the backrest (12) ,
A massage unit (20) comprising a pair of treatment fingers (30) and (30) protruding from the backrest (12), reciprocating up and down along the guide rails (14) and (14) ;
The upper roller (65) (65) and the lower roller (23) (23), which are arranged on the upper and lower sides of the massage unit (20) and fit into the left and right guide rails (14) (14) ,
The massage unit (20) includes a protruding mechanism (60) for tilting back and forth around the lower rollers (23) and (23) with respect to the guide rails (14) and (14) of the backrest (12) ,
The protruding mechanism (60) includes a crank pin (64) (64) that is rotatably fitted to the upper roller (65) (65), and the crank pin (64) (64) supported by the massage unit (20 ). hints crank mechanism with a crank shaft (62) supporting an eccentric position (61), the crank shaft overhang motor for rotating (69) (62),
A chair-type massage machine characterized by rotating the crankshaft (62) to tilt the massage unit (20) back and forth around the lower rollers (23) (23) . The massage unit (20) is provided with a tilting screw shaft (67) extending up and down that is rotated by the protruding motor (69) , screwed with the screw shaft (67), and massage unit by screw thrust. (20) the nut (71) which moves up and down comprises within, and connected by the nut (71) to the crankshaft (62) of the link piece (72) and a link piece (78) link mechanism (70), The massage unit (20) is tilted back and forth about the lower rollers (23) (23) by converting the vertical movement of the nut (71) into rotation of the crankshaft (62). Chair type massage machine.

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