JP4215732B2 - Massage machine - Google Patents

Description

  The present invention relates to an improvement of a massage machine that performs massage or hitting massage on a user with massage balls.

Conventionally, a chair-type or bed-type massage machine that massages an affected area such as a shoulder or a waist of a user is known. As such a massage machine, for example, in Patent Document 1, a massage unit in which a pair of left and right treatment fingers having kneading balls up and down is mounted on a back contact portion against which a user's back hits, A flexible cover is hung to cover the massage unit.
In the massage machine, the treatment finger is reciprocated vertically and laterally including front and back, and the affected part is struck and massaged with the kneading balls, or the massage unit is reciprocated in the longitudinal direction of the backrest part. Rolling massage from the neck to the waist can be performed.
The treatment finger is configured such that a pivotable lever is pivotally supported on an arm that is tilted and pivoted on a rubbing shaft, and a rubbing ball is provided above and below the lever. In order to enhance the treatment effect, it is desired that the kneading balls, in particular the upper kneading balls, be projected forward from the backrest portion so that the affected portion can be easily hit. Therefore, in Patent Document 1, a coil spring is disposed between the side surface of the arm and the side surface of the lever, and is urged to push the upper side of the lever forward with respect to the arm. Further, since the arm needs to have strength, it is generally made of a metal plate.

JP-A-10-99392

  Since the coil spring that biases the lever against the arm is exposed on the side surface of the treatment finger, the spring may be rubbed against the cover that covers the backrest portion and the cover may be damaged.

  Further, although the arm is made of a metal plate, during massaging massage, a reaction force F from the user is strongly applied to the massaging balls in the direction indicated by the arrow in FIG. It is a drawing showing an embodiment). This force F acts on the arm via the lever and bends the arm outward, so that the arm is required to have strength. In order to increase the strength of the arm, it has been proposed that the arm is made of two metal plates and the two arms are fixed by spot welding or the like to increase the strength, but stress concentrates on the welded part. Thus, the strength tends to be fragile, the flexibility of the arm is impaired, and the user feels mechanical hardness during the massage.

  The objective of this invention is providing the massage machine which can receive the massage of the favorable bodily sensation which does not feel mechanical hardness. Another object of the present invention is to provide a massage machine that does not damage the cover that covers the backrest portion by the spring that biases the lever against the arm.

In order to solve the above problems, the massage machine of the present invention is
Kneading comprises a pair of left and right therapeutic fingers mounted in a state of being inclined in the kneading shaft rotated by the motor, the therapeutic fingers is an arm base end is pivotally supported by a shaft kneading in an inclined, pivot to the tip of the arm In a massage machine having a massage unit comprising a lever pivoted by a lever and a kneading ball arranged at the tip of the lever,
The arm is formed of a resin having a central portion from the base end side toward the tip end side inclined so that a gap between the pair of left and right arms is widened, and the pivot shaft is protruded from the tip end side. Resin made of a first arm and a central part extending from the base end side to the tip end side is inclined in the same direction as the first arm, and a pivot insertion hole is formed on the tip end side to loosely fit the pivot shaft. Second arm,
A holding plate for preventing the lever fitted to the pivot and the second arm from coming off the pivot;
A gap is formed between the inclined portion of the first arm and the inclined portion of the second arm, and the pivot insertion hole is loosely fitted to the pivot, thereby leading the tip side of the first arm and the second arm. Is slidable in a plane parallel to the lever .

The massage machine of the present invention
An annular recess is formed on the back side of the pivot that protrudes from the first arm, and the lever is biased by a spring in a direction in which the kneading balls protrude forward, and the spring is a torsion spring. The winding portion of the torsion spring is fitted in the annular recess, and one end of the torsion spring is attached to the arm and the other end is attached to the lever .

According to the massage machine of the present invention, since the first arm and the second arm are slidable without being fixed, the first arm and the second arm are moved when a force in the vertical direction acts on the arm. Each can bend freely, and no stress concentration occurs between the first arm and the second arm.
Therefore, the arm can increase strength while having appropriate flexibility, and the user can receive an effective massage without feeling mechanical hardness during the massage.

Furthermore , according to the massage machine of the present invention, the lever is urged by the torsion spring so that the kneading balls protrude forward. The torsion spring has a winding part fitted in an annular recess formed on the back side of the pivot that pivotally supports the arm and lever, and the winding part does not jump out of the treatment finger. For example, the winding part is not rubbed and the cover is not damaged.

  An example in which the present invention is applied to a chair-type massage machine (10) will be described. In addition, this invention is not limited to a chair type | mold, For example, it can apply also to a bed type massage machine, a nursing bed, etc.

<Description of structure>
As shown in FIG. 1, the chair of the massage machine (10) includes a seat (11) on which a user sits, and a backrest (12) formed upward from the rear end of the seat (11). It comprises an armrest (14) formed upward on the left and right sides of the seat (11). The seat (11), backrest (12), and armrest (14) are each formed by connecting a metal pipe, frame, plate or the like inside, and the outer periphery is a flexible cover such as a patch cloth. Surrounded by (13) or cushion.

As shown in FIG. 1, the backrest portion (12) has an upper frame (16) and a lower frame (17) at the upper and lower portions, respectively, and the left and right sides of the upper and lower frames (16, 17). Both end portions are connected by a pair of left and right guide rails (18) extending parallel to the vertical direction. The upper end of the guide rail (18) extends upward beyond the upper frame (16), and a head rest (15) is attached to the tip of the guide rail (18) so that the head of the user can hit. ing. The lower portion of the guide rail (18) is pivotally supported by a frame forming the seat portion (11). The lower frame (17) is connected to a known reclining mechanism (19), and the backrest portion (12) is swingable relative to the seat portion (11).
The left and right guide rails (18) have a U-shaped cross-section and are arranged so that the grooves face each other, and a massage unit (30) is mounted along the guide rail (18) so as to be movable up and down. .

  Inside the back contact portion (12) is a lifting shaft (20) comprising a screw shaft (22) pivotally supported in parallel with the guide rail (18) and a lifting motor (21) for rotating the screw shaft (22). ) Is deployed. A pulley (23) is provided at the lower end of the screw shaft (22), and is linked to the rotating shaft of the lifting motor (21) via a belt.When the lifting motor (21) is driven, the screw shaft (22) is positive. Rotate or reverse.

  As shown in FIG. 1, the massage unit (30) includes a plurality of rollers (31), (31), and (31) that are fitted in the grooves of the guide rail (18) on the left and right sides of the chassis (90). It is attached to the guide rail (18) in the state. The chassis (90) has a screw cylinder (35) (see FIG. 1) that is screwed onto the screw shaft (22). The rotation of the screw shaft (22) causes the massage unit (30) to move by screw thrust. It moves up and down along the guide rail (18) in the backrest (12).

FIG. 2 is a perspective view of the massage unit (30) as viewed obliquely from the front. FIGS. 3 and 4 are perspective views of the massage unit (30) as viewed from the oblique rear. FIG. 4 illustrates the chassis (90). And a part of the hitting means (80) are removed.
As shown in FIGS. 2 to 4, the massage unit (30) includes treatment fingers (40) and (40) on the chassis (90), and a massage means (70) for operating the treatment fingers (40) and (40). And a hitting means (80).
The chassis (90) is configured by connecting a plurality of bent metal plates (91), (93), and (94) by screwing or spot welding.
The front metal plate (91) of the chassis (90) has an opening (92) through which the treatment fingers (40) and (40) protrude in the center. The left and right ends of the front metal plate (91) are bent rearward, and a plurality of rollers (31), (31) and (31) are pivotally supported.
Further, on the rear surface of the front metal plate (91), mounting plates (93) and (94) for supporting the kneading means (70) and the hitting means (80) are projected with a space therebetween.
The above-described screw cylinder (35) is attached to a bottom plate formed by bending the lower end of the front metal plate (91) rearward (the screw cylinder is not shown in FIGS. 2 to 4).

The squeezing means (70) includes a squeezing shaft (72) on which the treatment fingers (40) (40) are pivotally supported, a squeezing motor (71) for rotating the squeezing shaft (72), and a squeezing shaft (72 ) And a speed reduction means such as a belt (78) for transmitting power.
The stagnation shaft (72) is pivotally supported on the mounting plates (93) and (94) of the chassis (90). As shown in FIGS. 3 to 6, cam bodies (73) and (73) for tilting the treatment fingers (40) and (40) in a symmetrical manner with respect to each other are fixed to the kneading shaft (72). As shown in FIG. 4, a worm wheel (75) is attached to one end of the kneading shaft (72). The worm wheel (75) meshes with a worm (76) in a gear box (95) provided on one mounting plate (93), and a pulley (77) fitted to the upper end of the worm shaft (76a) is a belt. Via (78), it is connected to the pulley (79) of the stagnation motor (71) fixed to the other mounting plate (94), and the rotational force of the stagnation motor (71) is transmitted to the stagnation shaft (72).

  As shown in FIG. 4, the gear box (95) that supports the worm shaft (76a) is a metal plate of the chassis (90), specifically, a mounting plate ( A shaft hole (96a) (96b) is formed in a part of 93), and the mounting plate (93) is bent by bending (see FIG. 12). The formation of the gear box (95) on the mounting plate (93) will be described later.

The tapping means (80) includes a tapping shaft (82) disposed below the kneading shaft (72), a tapping motor (81) for rotating the tapping shaft (82), and a tapping shaft (82) from the tapping motor (81). And a speed reducing means such as a belt (85) for transmitting power to the motor.
The hitting shaft (82) is pivotally supported on the mounting plate (93) (94) of the chassis (90), and the hitting shaft (82) and the treatment fingers (40) (40) are connected to the connecting rods (45) (45 ). One end of the connecting rod (45) (45) is connected to the treatment finger (40) (40) via the ball joint (49) (49), and the other end is connected to the hitting shaft (82) with an eccentric mechanism (88), etc. Is eccentrically supported in a state where the phase differs by 180 °. As shown in FIG. 3, a pulley (84) is fitted to the hitting shaft (82), and the pulley (84) is fixed to the mounting plate (93) via the belt (85). ) And the pulley (86) are connected so as to be able to transmit power.

  As shown in FIG. 5, the treatment fingers (40) and (40) are provided with a pair of kneading balls (41) and (42) at the upper and lower ends of a plate-like lever (60) bent in a substantially center-shaped shape. The bent portion of the lever (60) is pivotally supported by the plate-like arm (5). FIG. 5 is a perspective view of the treatment finger (40) on the left side of FIG. The arm (5) is pivotally supported by the cam body (73) of the stagnation shaft (72), and is inclined symmetrically with respect to the stagnation shaft (72). The cam body (73) is also eccentric with respect to the stagnation shaft (72). The rear end of the arm (5) is connected to the connecting rod (45) via a ball joint (49). As shown in FIG. 3, the left and right connecting rods (45) and (45) are urged in a direction to attract each other by a spring (46) for suppressing vibration.

  FIG. 6 is an enlarged sectional view showing the arm (5), the lever (60), and the kneading balls (41) and (42) of the treatment finger (40) on the left side of FIG. As shown in FIG. 6, the lever (60) is disposed so that the massage balls (41) and (42) between the opposite treatment fingers (40) and (40) (see FIG. 3) face each other. (60) is pivotally supported by the arm (5) and is rotatable. The arm (5) is pivotally supported via the cam body (73) while being inclined to the stagnation shaft (72).

As shown in FIG. 6, the arm (5) includes an inner first arm (50) and an outer second arm (57). The first arm (50) and the second arm (57) are not fixed to each other by bonding or screwing, but are simply in surface contact and can be slid in a plane parallel to the lever (60). It has become.
The first arm (50) and the second arm (57) are each preferably made of resin in order to have flexibility. Examples of the resin include POM (polyacetal, registered trademark “Duracon”), nylon and the like.

7 and 8 are perspective views showing the first arm (50) of the treatment finger (40) on the left side of FIG. 6 taken out, and FIG. 7 is a view of the first arm (50) as seen from the right side. 8 is a view of the first arm (50) as viewed from the left side, and the side visible in FIG. 8 is the side facing the second arm (57). The first arm (50) is provided with a cam mounting hole (52) that fits into the squeezing shaft (72) via a cam body (73) (see FIG. 6) on the base end side, and a torsion is formed on the inner side of the tip. An annular recess (53) that accommodates the winding portion (48) of the spring (47) is provided as a recess. A spring stopper (54) for fixing one end of the torsion spring (47) is recessed in the circumferential surface of the annular recess (53).
As shown in FIGS. 6 and 8, a pivot (51) is projected on the back side of the annular recess (53), and the second arm (57) and the lever (60) are fitted on the pivot (51). Yes.
As shown in FIGS. 7 and 8, the pivot (51) has two screw insertion holes (55) that pass through the center of the annular recess (53). As will be described later, the screw insertion hole (55) has a retaining plate (101) (102) for preventing the torsion spring (47) from being pulled out and preventing the second arm (57) and the lever (60) from falling off. Screws (100) (100) for screwing are inserted in a loosely fitted state.
As shown in FIG. 6, the first arm (50) is centered outwardly from the proximal side to the distal side in order to provide the resin-made first arm (50) with predetermined flexibility and strength. It is desirable to form it inclined.
As shown in FIG. 8, a hemispherical recess (49a) that is a half of a ball joint (49) that connects the connecting rod (45) is formed at the proximal end of the first arm (50). Yes.

9 and 10 are perspective views showing the second arm (57) of the treatment finger (40) on the left side of FIG. 6 taken out, and FIG. 9 is a view of the second arm (57) viewed from the right side. FIG. 10 is a view of the second arm (57) as viewed from the left side, and the side visible in FIG. 9 is the side facing the first arm (50).
As shown in FIGS. 6, 9 and 10, the second arm (57) is provided with a cam mounting hole (59) that fits in the stagnation shaft (72) via the cam body (73) on the base end side. A pivot insertion hole (58) into which the pivot (51) of the first arm (50) is fitted is formed at the tip. The pivot insertion hole (58) is loosely fitted to the pivot (51) of the first arm (50) so that the first arm (50) and the second arm (57) can be in sliding contact with each other. It has an inner diameter that is slightly larger than the diameter.
As shown in FIG. 6, the second arm (57) is formed so that the center is inclined outward from the proximal end side toward the distal end side, similarly to the first arm (50). The inclined portion is not in contact with the inclined portion of the first arm (50).
As shown in FIG. 9, a hemispherical recess (49b) serving as a half of a ball joint (49) for connecting the connecting rod (45) is formed at the proximal end of the second arm (57). Has been. The hemispherical recess (49b) is paired with the hemispherical recess (49a) of the first arm (50) to form a spherical joint (49).

  In the first arm (50) and the second arm (57), the second arm (57) pivot insertion hole (58) is loosely fitted to the pivot (51) of the first arm (50), and both arms (50) ( The cam mounting hole (73) is fixed to the kneading shaft (72) so that the tip of the connecting rod (45) is sandwiched between the spherical joints (49) consisting of hemispherical recesses (49a) and (49b) of (57). 52) Mounted by pivoting (59). The cam body (73) is fixed to the stagnation shaft (72) in a state where the peripheral surface is inclined and eccentric with respect to the axis of the stagnation shaft (72).

As shown in FIGS. 5 and 6, the torsion spring (47) has a winding portion (48) accommodated in an annular recess (53) of the pivot (51), and one end of the torsion spring (47) (see FIG. 5). (Not shown) is attached to a spring stopper (54) formed on the first arm (50). The other end (47b) of the torsion spring (47) has a ring shape, and the torsion spring (47) is attached to the treatment finger by hooking the ring on a spring stopper (62) of a lever (60) described later. Attached to (40).
Since the torsion spring (47) is housed in the annular recess (53) as described above and does not protrude from the treatment finger (40), the winding part (48) is attached to the cover (13) of the massage machine (10). Will not get caught or rubbed.

The lever (60) is fitted to the pivot (51) of the first arm (50) as shown in FIG. As shown in FIG. 5, the lever (60) can be exemplified by a substantially bent central shape, and a pivot mounting hole (64) for loosely fitting the pivot (51) is opened at the central bent portion. The kneading balls (41) and (42) are pivotally supported at the upper and lower ends of the lever (60). The lever (60) can also be made of the same resin as the arm (5).
The lever (60) has a spring stopper (62) to which one end of the torsion spring (47) is attached, and a contact piece (61) for restricting the rotation angle of the lever (60). The contact piece (61) has a cylindrical shape and is fitted with a buffer rubber (63) for softening the contact between the lever (60) and the arm (5). One end (47b) of the torsion spring (47) is wound around the tip side. The ring portion (47b) at the tip of the torsion spring (47) is hooked on the spring stopper (62) to urge the upper kneading ball (41) of the lever (60) in the forward pushing direction. The lever (60) is in a state in which the contact piece (61) hits the arm (5) by the torsion spring (47) in an unloaded state (the state shown in FIG. 5).
As described above, one end (47b) of the torsion spring (47) is annularly fitted into the contact piece (61) of the lever (60), and the contact piece (61) also serves as the spring stopper (62). The cushioning rubber (63) is secured at one end (47b), so that it is not necessary to separately remove it, and the shape of the part can be simplified and the number of parts can be reduced.
As shown in FIG. 6, the lever (60) has a pivot mounting hole (64) fitted into the pivot (51) of the first arm (50), and disc-shaped holding plates (101) (102) from both sides. Screws (100) (100) are fixed so that the member does not fall off. Screw holding holes (101a) (101a) that are not threaded are formed in the holding plate (101) on the side close to the head of the screw (100) (100), and the tip side of the screw (100) In the holding plate (102), screw holes (102a) (102a) with a thread are formed. By fitting the second arm (57) and lever (60) to the pivot (51) and holding the pivot (51) between the holding plates (101) and (102) from both sides, A second arm (57) and a lever (60) are attached to one arm (50).

  The kneading balls (41) and (42) attached to the upper and lower ends of the lever (60) are flat spheres made of resin and are pivotally supported by the lever (60). In FIG. 6, the upper kneading ball (41) is shown in cross section, and is rotatably fitted to a support shaft (65) protruding from the tip of the lever (60).

The massage operation | movement of the massage machine (10) carrying the massage unit (30) of the said structure is illustrated.
<Massage massage>
The treatment fingers (40) and (40) are pivotally supported in an inclined state with respect to the kneading shaft (72), and the arms (5) and (5) are connected to the connecting rods (45) and (45), respectively. Because it is blocked, when the stagnation motor (71) is driven and the stagnation shaft (72) is rotated, the left and right stagnation balls (41) (42) draw an elliptical trajectory, and reciprocate while repeating approach and separation Move and perform a grudge.

When the massage massage is performed, the massage balls (41) and (42) of the treatment fingers (40) and (40) receive a reaction force in the direction of arrow F in FIGS. 5 and 6 from the affected area of the user. Since the upper kneading ball (41) is biased to protrude forward by the torsion spring (47), it receives a larger reaction force F than the lower kneading ball (42).
The reaction force F applied to the kneading balls (41) and (42), particularly the upper kneading balls (41), is transmitted to the arm (5) through the lever (60).
In the present invention, as shown in FIG. 6, the arm (5) comprises a first arm (50) and a second arm (57), and the first arm (50) and the second arm (57) are directly fixed. The first arm (50) and the second arm (57) are bent by receiving the reaction force while being in sliding contact with each other, so that the stress is dispersed and the first arm (50) is slidable. No stress is generated between the second arm 57 and the second arm 57.
Therefore, when the reaction force F is received, the first arm (50) and the second arm (57) can be bent without impairing the flexibility and strength of the first arm (50) and the mechanical hardness, Without feeling that it is too soft, it is possible to stably provide a massage with a good bodily sensation over a long period of time.

<Tapping massage>
When the tapping motor (81) is driven and the tapping shaft (82) is rotated, the treatment fingers (40) (40) are moved via the connecting rods (45) (45) eccentrically connected to the tapping shaft (82). Reciprocally move in the vertical direction (including the front-rear direction) to perform the hitting operation.

As shown in FIGS. 5 and 6, the lever (60) is urged so that the upper kneading ball (41) protrudes forward from the first arm (50) by a torsion spring (47). When massage is performed, the massaging balls (41) receive a force in the direction of arrow F ′ in FIG. 5 from the affected area of the user.
At this time, the lever (60) rotates with respect to the arm (5) with an appropriate strength by the urging force of the torsion spring (47), and the amount of protrusion of the kneading balls (41) changes. A tapping massage with a good experience can be performed without feeling the sensation.

<Other massages>
Further, when the kneading motor (71) and the tapping motor (81) are driven at the same time, it is possible to perform a massage that combines the kneading operation and the tapping operation. In the combined massage, the arm (5) is composed of the first arm (50) and the second arm (57), and the lever (60) is biased to the first arm (50) by the torsion spring (47). By doing so, it is possible to receive a massage with a good bodily sensation without feeling mechanical hardness that synergizes both the above-described actions and effects.
In addition, a massage can also be performed over a wide range by raising / lowering the massage unit (30) up and down by the raising / lowering means (20) while giving a massage massage or a hitting massage.

  FIG. 11 is an enlarged view of the treatment fingers (40) and (40) showing different embodiments of the present invention. In the above embodiment, the lever (60) and the arm (5) are urged by the torsion spring (47). However, in this embodiment, when the lever (60) rotates, the arm (5) and the lever (5) A braking protrusion (110) is provided on the surface facing (60). By eliminating the need for spring bias such as the torsion spring (47), there is an advantage that the structure of the treatment fingers (40) and (40) can be simplified.

The braking protrusion (110) is preferably provided on one of the arm (5) and the lever (60). For example, when the braking protrusion (110) is provided on the side surface of the lever (60), if the lever (60) tries to rotate relative to the arm (5) during massage massage or tapping massage, the braking protrusion (110) Moves while sliding on the side surface of the arm (5), becomes resistance, generates a load (torque) in the rotation of the lever (60), and the lever (60) rotates freely with respect to the arm (5). To prevent.
Thereby, the kneading balls (41) and (42) can be applied to the affected area of the user with an appropriate strength.

  In this embodiment, the lever (60) stops at an arbitrary position with respect to the arm (5) in an unloaded state, and does not return to the original state by the spring force as in the above embodiment. When the massage is performed, the massage balls (41) and (42) hit the affected area of the user, so there is no problem in the treatment.

FIG. 12 is a development view of the mounting plate (93). The mounting plate (93) includes a shaft hole (96) through which the stagnation shaft (72) to which the worm wheel (75) is attached and a virtual line parallel to a virtual line A passing through the center of the shaft hole (96). Two shaft holes (96a) and (96b) for attaching the worm shaft (76a) are opened on line B. The shaft holes (96), (96a) and (96b) are punched once, and after punching, from the dotted line C By bending vertically so as to stand up, the distance between the axes of the worm wheel (75) and the worm (76) can be kept constant as shown in FIG. The shaft holes (96a) and (96b) are desirably opened so that the play between the worm wheel (75) and the worm (76) is minimized.
The shaft hole (96c) through which the hitting shaft (82) passes can also be punched at the same time.
In this way, the distance between the shafts of the worm wheel (75) and the worm (76) can be kept constant with a small amount of play, so that backlash can be prevented and generation of noise peculiar to gears can be suppressed. Can do.
If sufficient strength cannot be obtained simply by bending the mounting plate (93), a reinforcing material (as shown in FIG. 12) is attached to the metal plate portion that becomes the gear box (95) of the worm (76). Ear pieces (97) and (97) for attaching 99) are formed, and the reinforcing member (99) may be screwed as shown in FIGS. As a result, the gear box (95) can be reinforced and the change in shape can be prevented.

  The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. Moreover, each part structure of this invention is not restricted to the said Example, A various deformation | transformation is possible within the technical scope as described in a claim.

  INDUSTRIAL APPLICATION This invention is useful as a massage machine which can receive the massage of the favorable bodily sensation which does not feel mechanical hardness.

It is sectional drawing of the massage machine of this invention. It is the perspective view which looked at the massage unit from diagonally forward. It is the perspective view which looked at the massage unit from diagonally back. It is the perspective view which looked at the massage unit from diagonally backward, Comprising: A part of hitting means, the reinforcement board of a gear box, etc. are abbreviate | omitted and shown. It is a perspective view of a treatment finger. It is sectional drawing of a treatment finger. It is the perspective view which looked at the 1st arm from the inside. It is the perspective view which looked at the 1st arm from the outside. It is the perspective view which looked at the 2nd arm from the inside. It is the perspective view which looked at the 2nd arm from the outside. It is a perspective view which shows the Example from which a treatment finger differs. It is an expanded view of the mounting plate which forms a gear box. It is an enlarged view around a gear box.

Explanation of symbols

(10) Massage machine
(30) Massage unit
(40) Treatment finger
(41) Grudge ball
(42) Grudge ball
(47) Torsion spring
(48) Winding part
(5) Arm
(50) 1st arm
(53) Annular recess
(57) Second arm
(60) Lever
(70) Itching means
(80) Tapping means

Claims (3)

It has a pair of left and right treatment fingers (40) and (40) attached in a state inclined to the stagnation shaft (72) rotated by the stagnation motor (71), and each treatment finger (40) and (40) has a proximal end inclined. The arm (5) pivotally supported by the rubbing shaft (72) in the state, the lever (60) pivotally supported by the pivot (51) at the tip of the arm (5), and the tip of the lever (60) In a massage machine comprising a massage unit (30) having a massaging ball (41),
The arm (5) is formed such that a central portion from the base end side toward the tip end side is inclined outward so that a gap between the pair of left and right arms is widened, and the pivot (51) is provided on the tip end side. A protruding resin first arm (50) and a central portion from the base end side to the tip end side are inclined in the same direction as the first arm (50), and the pivot ( 51) and a resin-made second arm (57) in which a pivot insertion hole (58) for loose fitting is formed,
A holding plate (101) (102) for preventing the lever (60) fitted to the pivot (51) and the second arm (57) from coming off from the pivot (51);
A space is formed between the inclined portion of the first arm (50) and the inclined portion of the second arm (57), and the pivot insertion hole (58) is loosely fitted to the pivot (51). The massaging machine is characterized in that the distal ends of the first arm (50) and the second arm (57) can slide in a plane parallel to the lever (60) . Forming an annular recess (53) on the back side of the pivot (51) projecting from the first arm (50),
The lever (60) is biased by a spring to the arm (5) in a direction in which the kneading balls (41) protrude forward, and the spring is a torsion spring (47), and the torsion spring (47) The winding portion (48) of the rim is fitted into the annular recess (53), one end of the torsion spring (47) is attached to the arm (5), and the other end (47b) is a lever. The massage machine according to claim 1 attached to (60) . The lever (60) is provided with a contact piece (61) for restricting the rotation of the lever (60), and the other end (47b) of the torsion spring (47) is provided with the contact piece (61). The massage machine according to claim 2, which is hooked on the body .

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