JP4070773B2 - Massage machine - Google Patents

Description

  The present invention relates to an improvement of a chassis of a massage unit on which a treatment finger is mounted. Specifically, the present invention relates to a massage machine in which a gear box of a speed reduction mechanism can be configured from the chassis.

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, there is one in which a massage unit in which a pair of right and left treatment fingers having kneading balls up and down is mounted on a back contact portion where a back of a user hits.
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 by pivotally supporting a pivotable lever on an arm that is tilted and pivotally supported by a kneading shaft, and has kneading balls above and below the lever. The stagnation shaft is connected to the stagnation motor through a speed reduction mechanism including a worm wheel and a worm.
The worm is housed in a gear box, and the gear box is attached to the chassis by screws or the like.

JP 2000-237257 A

If there is play between the worm wheel and the worm, it may lead to backlash, gear-specific noise, worm wheel or worm wear, or damage.
In particular, in the case of a massage machine, the treatment finger receives a reaction force from the affected part when a pressing force is applied to the affected part of the user, so that it is desired that play between the worm wheel and the worm be kept as small as possible.
However, when the gearbox is separately attached to the chassis by screwing or the like, it is difficult to attach the gearbox with a small play between the worm wheel and the worm due to an installation error when the gearbox is attached or variations in products such as the gearbox. Moreover, attaching the gear box separately also led to an increase in the work process, the number of parts, and the like.

  An object of the present invention is to provide a massage machine that can maintain a constant distance between the worm wheel and the worm shaft by forming the gear box of the speed reduction mechanism directly from the chassis.

In order to solve the above problems, the massage machine of the present invention is
A massage unit comprising a metal plate and a rubbing shaft to which a treatment finger is attached, a rubbing motor that rotationally drives the rubbing shaft, and a speed reduction mechanism that connects the rubbing shaft and the rubbing motor so that power can be transmitted. In the massage machine with
The speed reduction mechanism includes a gear box configured by bending a metal plate of the chassis, a worm wheel attached to the stagnation shaft, and a worm meshed with the worm wheel and connected to the stagnation motor.
In the gear box, a shaft hole that supports the rubbing shaft and two shaft holes that support both sides of the worm shaft on a virtual line parallel to a virtual line passing through the center of the shaft hole are opened.
The gear box has two shaft holes that support both sides of the worm shaft of the metal plate after punching out simultaneously the shaft hole that supports the squeezing shaft on the metal plate and two shaft holes that support both sides of the worm shaft. It was set as the structure produced by bending the established part so that it may mutually face .

According to the massage machine of the present invention, since the gear box is constituted by the metal plate of the chassis, the attachment to the chassis becomes unnecessary.
Further, by directly opening the shaft hole of the worm shaft or the stagnation shaft in the metal plate of the chassis, the distance between the shafts of the worm wheel and the worm can be easily maintained constant. Further, by adjusting the position of the shaft hole provided in the metal plate according to the meshing diameter of the worm, worm wheel, etc., the play between the worm and the worm wheel can be minimized. Thereby, the occurrence of backlash and noise peculiar to the gear mechanism can be prevented.

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.
The present invention is characterized in that the metal plate (93) of the chassis (90) is bent and the gear box (95) is formed directly on the metal plate (93), and the massage unit (30) and The structure and operation mechanism of the arm (5) are not limited to the following embodiments.

<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 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) 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) and (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 gearbox (95) supporting 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. 11). 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) have 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 a 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 cross-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).

FIG. 11 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) on the line B are opened. As shown in FIG. 11, the gear box (95) is formed by punching the shaft holes (96), (96a) and (96b) in the mounting plate (93) at a time, and bending it vertically so as to rise from the dotted line C after punching. It is formed. A worm shaft (76a) in which bearings (76d) and (76d) are arranged above and below the worm (76) is fitted into the shaft holes (96a) and (96b). As shown in FIG. 12, the stagnation shaft (72) to which the worm wheel (75) is attached is fitted into the shaft hole (96), and the worm shaft (76a) is fitted into the shaft holes (96a) (96b) to thereby stagnate. The distance D between the shaft (72) and the worm shaft (76a) can be kept constant. The shaft holes (96a) and (96b) are desirably opened so that the play between the worm wheel (75) and the worm (76) is minimized. In other words, the inter-axis distance D can be easily maintained constant with the play being as small as possible.
The shaft hole (96c) through which the hitting shaft (82) passes can also be punched at the same time.

As described above, the axial distance D between 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. be able to.
If sufficient strength cannot be obtained simply by bending the mounting plate (93), a reinforcing material (as shown in FIG. 11) 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.

  Since the gear box (95) is formed directly on the metal plate (93) by bending the metal plate (93) of the chassis (90) as described above, the inter-axis distance D can be kept constant. Fine adjustment of the gearbox mounting position and adjustments due to product variations are not required, reducing work processes. Moreover, since there is no need to install a separate gear box, the number of parts can be reduced.

The massage operation | movement of the massage machine (10) carrying the massage unit (30) of the said structure is illustrated.
<Massage massage>
When the stagnation motor (71) is driven, the worm shaft (76a) rotates via the pulley (79), belt (78) and pulley (77), and the worm (76) fitted to the worm shaft (76a) rotates. To do. The rotation of the worm (76) is transmitted to the worm wheel (75) meshing with the worm (76), and the kneading shaft (72) to which the worm wheel (75) is attached rotates.
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. Since it is blocked, when the kneading shaft (72) rotates, the left and right kneading balls (41) and (42) reciprocate while repeating approach and separation while drawing an elliptical trajectory to perform a kneading operation.

  At this time, the distance D between the worm (76) and the worm wheel (75), that is, the distance D between the worm shaft (76a) and the stagnation shaft (72) is obtained by bending the metal plate (93) of the chassis (90). The gear box (95) manufactured as described above is adjusted so that the play is minimized, so that no backlash occurs and no noise peculiar to the gear is generated. Therefore, the user can receive a silent massage.

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, power is transmitted through the pulley (86), the belt (85), and the pulley (84) to rotate the tapping shaft (82). As a result, the treatment fingers (40) and (40) reciprocate in the vertical direction (including the front-rear direction) via the connecting rods (45) and (45) eccentrically connected to the hitting shaft (82). Perform the action.

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.

  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 APPLICABILITY The present invention is useful as a massage machine that can suppress the occurrence of backlash of the speed reduction mechanism and the generation of noise unique to gears, and can achieve a reduction in the work process and the number of parts.

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 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
(5) Arm
(70) Itching means
(72) Itching shaft
(75) Worm wheel
(76) Warm
(76a) Worm shaft
(90) Chassis
(93) Metal plate (mounting plate)
(96) Shaft hole
(96a) Shaft hole
(96b) Shaft hole

Claims (1)

Power transmission between the stagnation shaft (72) to which the treatment fingers (40) and (40) are attached, the stagnation motor (71) that rotationally drives the stagnation shaft (72), and the stagnation shaft (72) and the stagnation motor (71) In a massage machine comprising a massaging unit (30) that is mounted on a chassis (90) made of a metal plate with a speed reduction mechanism that can be linked together,
The speed reduction mechanism includes a gear box (95) formed by bending a metal plate (93) of the chassis (90), a worm wheel (75) attached to the stagnation shaft (72), and the worm wheel (75). And a worm (76) connected to the kneading motor (71).
The gear box (95) includes a shaft hole (96) that supports the rubbing shaft (72), and a worm (76) worm on an imaginary line parallel to an imaginary line passing through the center of the shaft hole (96). Established two shaft holes (96a) and (96b) that support both sides of the shaft (76a),
The gear box (95) has a shaft hole (96) for supporting the rubbing shaft (72) on the metal plate (93) and two shaft holes (96a) (96b) for supporting both sides of the worm shaft (76a). After punching at the same time, the metal plate (93) is made by bending the opened portions of the two shaft holes (96a) (96b) that support both sides of the worm shaft (76a) so as to face each other. A massage machine characterized by its configuration .

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