WO2021199517A1

WO2021199517A1 - Massage device

Info

Publication number: WO2021199517A1
Application number: PCT/JP2020/047093
Authority: WO
Inventors: 和馬石橋; 岡本　祐介; 学森元
Original assignee: マクセルホールディングス株式会社
Priority date: 2020-03-31
Filing date: 2020-12-17
Publication date: 2021-10-07
Also published as: JP2021159344A; JP7416655B2

Abstract

Provided is a massage device that is capable of performing massage having changes in amplitude while moving a massage body using a relatively simple drive structure, and is also capable of maintaining good operating conditions over a long period of time.　A massage device 1 is provided with: a casing 2; a massage body 3 that is disposed on an attachment wall 34 of the casing 2 and is pressed against a surface of a human body; and a drive structure 4 that is disposed in the casing 2 and causes the massage body 3 to perform a reciprocating motion. The drive structure 4 includes: a rotary drive source 36; and a motion conversion mechanism 39 that converts a rotary motion of the rotary drive source 36 into a reciprocating motion. The motion conversion mechanism 39 is formed by a cam mechanism including: a cam 45 that is driven by the rotary drive source 36 to rotate; and a cam follower 46 that is driven by the cam 45 to perform a reciprocating motion.

Description

Massage device

The present invention relates to a massage device that gives a massage stimulus to the surface of the human body such as the scalp.

This type of massage device is disclosed in, for example, Patent Document 1. The massage device of Patent Document 1 includes a massage body (treatment unit), a frame body that supports the massage body, and a drive structure (drive unit) that operates the massage body. The massage body includes a flexible disk-shaped substrate and protrusions formed so as to intersect with respect to the surface of the substrate, and the substrate is supported by the frame. The drive structure includes a reciprocating drive means for deforming the substrate in a concave-convex manner in a direction intersecting the surface thereof. The reciprocating driving means is rotatably connected to a motor having a reduction mechanism, a crank mechanism attached to the motor shaft of the motor, and an eccentric shaft of the crank mechanism, and the other side is substantially in the center of the substrate. It is equipped with a connecting rod that is swingably connected to the shaft. The motor is installed in a posture in which the motor shaft is orthogonal to the axis along the uneven deformation direction of the substrate.

JP-A-2007-260426

In the massage device of Patent Document 1, since the rotational power of the motor is converted into reciprocating motion by the crank mechanism to deform the substrate unevenly, the protrusions of the massage body can be operated with a relatively simple structure. However, in the crank mechanism, the massage body reciprocates only once with a constant amplitude each time the motor rotates, and only a monotonous massage stimulus can be applied to the surface of the human body. In addition, since most of the reaction force when the massage body is pressed against the surface of the human body is received by the connecting rod in the crank mechanism, the shafts at both ends of the connecting rod and the rotating sliding parts due to the bearings are likely to wear at an early stage, and the wear occurs over time. When the rattling of the part increases, the movement of the massage body becomes jerky.

An object of the present invention is to provide a massage device capable of applying a massage stimulus having a change in amplitude while operating a massage body with a relatively simple drive structure, and capable of maintaining a good operating state for a long period of time. It is in.

The present invention includes a casing 2, a massage body 3 arranged on the mounting wall 34 of the casing 2 and pressed against the surface of the human body, and a drive structure 4 arranged inside the casing 2 to reciprocate the massage body 3. The target is the massage device 1 provided with the above. The drive structure 4 includes a rotary drive source 36 and a motion conversion mechanism 39 that converts the rotary motion of the rotary drive source 36 into a reciprocating motion. The motion conversion mechanism 39 is characterized by being composed of a cam original section 45 that is rotationally driven by the rotational drive source 36 and a cam slave section 46 that is reciprocally driven by the cam original section 45. And. The "cam original section" here means a member connected to the side that transmits the movement in the cam mechanism, that is, the drive source side, and the "cam follower" means the cam original. It means a member that works by transmitting movement from a knot.

The rotation drive source 36 is installed in a direction in which the axis of the output shaft 38 of the rotation drive source 36 is orthogonal to the movement direction of the cam slave node 46, and the cam original node 45 is connected to the output shaft 38 of the rotation drive source 36. ing. The cam original section 45 is composed of an eccentric cam 152 having a cam surface 151 on the peripheral surface, and the cam slave section 46 is a driven body 154 having a cam receiving surface 153 in contact with the cam surface 151 of the eccentric cam 152. The driven body 154 is configured to include an urging body 155 that urges the driven body 154 toward the eccentric cam 152.

The rotation drive source 36 is installed in a direction in which the axis of the output shaft 38 of the rotation drive source 36 coincides with the movement direction of the cam slave section 46, and the cam original section 45 is connected to the output shaft 38 of the rotation drive source 36. ing. The cam original section 45 is composed of an end face cam 180 having a circular cam surface 151 on the end face, and the cam slave section 46 is a driven body 154 having a cam receiving surface 153 in contact with the cam surface 151 of the end face cam 180. It is configured to include an urging body 155 that urges the driven body 154 toward the end face cam 180.

The rotation drive source 36 is installed in a direction in which the axis of the output shaft 38 of the rotation drive source 36 coincides with the movement direction of the cam slave section 46, and the cam original section 45 is connected to the output shaft 38 of the rotation drive source 36. ing. The cam original node 45 is configured on either one of the pin frame 47 having the cam pin 48 or the cylindrical cam 52 in which the corrugated groove 51 engaging with the cam pin 48 is recessed, and the cam slave node 46 is configured on the remaining one. There is.

The cylindrical cam 52 is formed in a hollow cylindrical shape. The cylindrical cam 52 is arranged so as to cover the circumference of the rotation drive source 36, and the cam pin 48 and the corrugated groove 51 are arranged so as to be within the length dimension width of the rotation drive source 36 in the axial direction of the output shaft 38. ing.

The cam follower 46 is composed of a hollow cylindrical cylindrical cam 52.

The massage body 3 includes a disk-shaped elastic base 12 that is supported by the casing 2 and can be elastically deformed in the thickness direction, and a group of protrusions 13 that are formed so as to project outward from the outer surface of the elastic base 12 and are pressed against the surface of the human body. Includes a connector 14 that is formed to project inward from the inner surface of the elastic base 12 and is connected to the cam casing 46. The cam follower 46 and the connecting body 14 are interlocked with each other via the interlocking body 65.

The inside of the casing 2 is an elastically deformable diaphragm 76 fixed to the casing 2, a first region 74 facing the mounting wall 34 on which the massage body 3 is arranged, and a second region 75 on which the drive structure 4 is arranged. It is divided into. The interlocking body 65 penetrates the diaphragm 76 in a watertight manner and is fixed to the diaphragm 76 at the penetrating portion.

The first region 74 of the casing 2 is provided with a water supply port 85 to which water is supplied from an external water source. A group of spouts 86 for discharging water supplied from the water supply port 85 via the first region 74 is provided on the mounting wall 34 of the casing 2 in which the massage body 3 is arranged.

A water passage 87 is formed in the first region 74 from the water supply port 85 to the spout port 86 of the group in a state of being separated from the diaphragm 76.

A group of spouts 86 are formed on a mounting wall 34 facing the outer peripheral edge of the elastic base 12 of the massage body 3.

The elastic base 12 of the massage body 3 is formed in a ring shape. A group of spouts 86 are formed on a mounting wall 34 surrounded by an elastic base 12.

The elastic base 12 of the massage body 3 is formed in a ring shape. A group of spouts 86 are formed on a mounting wall 34 facing the outer peripheral edge of the elastic base 12 of the massage body 3 and a mounting wall 34 surrounded by the elastic base 12, respectively.

In the massage device of the present invention, the motion conversion mechanism 39 that converts the rotational motion of the rotary drive source 36 into a reciprocating motion is reciprocally driven by the cam original section 45 that is rotationally driven by the rotary drive source 36 and the cam original section 45. It was composed of a cam mechanism including a cam follower 46. As described above, when the motion conversion mechanism 39 is composed of the cam mechanism, the number of reciprocating reciprocations of the reciprocating drive per rotation of the rotation drive source 36 is increased as compared with the crank mechanism applied to the conventional massage device. In addition, the amplitude for each round trip can be made different. Further, since the cam mechanism does not have a rotating sliding portion due to the shaft and the bearing, it is possible to suppress rattling of the mechanism portion due to wear. As described above, according to the massage device 1 of the present invention, it is possible to apply a stimulus having a change in amplitude while operating the massage body 3 with a relatively simple drive structure 4 called a cam mechanism, and for a longer period of time. A good operating condition can be maintained.

The rotation drive source 36 is installed in a direction in which the axis of the output shaft 38 of the rotation drive source 36 is orthogonal to the motion direction of the cam slave node 46, and the cam original node 45 is connected to the output shaft 38 of the rotation drive source 36. Then, the axial direction of the rotation drive source 36 can be aligned with the direction parallel to the mounting wall 34 of the casing 2. Therefore, when the direction facing the mounting wall 34 of the casing 2 is defined as the front view, the rotation is performed. The drive source 36 can prevent the dimension of the casing 2 in the depth direction in the front view from becoming long. Further, the cam original section 45 is composed of an eccentric cam 152 having a cam surface 151 on the peripheral surface, and the cam slave section 46 has a driven body 154 having a cam receiving surface 153 in contact with the cam surface 151 of the eccentric cam 152. When the driven body 154 is configured to include an urging body 155 that urges the driven body 154 toward the eccentric cam 152, various reciprocating movements can be made by changing the shape of the cam surface 151 of the eccentric cam 152. Since exercise can be realized, it is possible to apply a massage stimulus with a simple structure and a variety of amplitudes.

The rotation drive source 36 is installed in a direction in which the axis of the output shaft 38 of the rotation drive source 36 coincides with the movement direction of the cam slave node 46, and the cam original node 45 is connected to the output shaft 38 of the rotation drive source 36. Then, since the axial direction of the rotational drive source 36 can be aligned with the direction orthogonal to the mounting wall 34 of the casing 2, the rotational drive source 36 increases the radial dimension of the casing 2 in the front view. Can be suppressed. Further, the cam original section 45 is composed of an end face cam 180 having a circular cam surface 151 on the end face, and the cam slave section 46 has a driven body 154 having a cam receiving surface 153 in contact with the cam surface 151 of the end face cam 180. When the driven body 154 is configured to include an urging body 155 that urges the driven body 154 toward the end face cam 180, various reciprocating motions can be performed by changing the shape of the cam surface 151 of the end face cam 180. Since it can be realized, it is possible to apply a massage stimulus having various amplitudes with a simple structure.

The rotation drive source 36 is installed in a direction in which the axis of the output shaft 38 of the rotation drive source 36 coincides with the movement direction of the cam slave node 46, and the cam original node 45 is connected to the output shaft 38 of the rotation drive source 36. Then, since the axial direction of the rotational drive source 36 can be aligned with the direction orthogonal to the mounting wall 34 of the casing 2 in the same manner as described above, the radial dimension of the casing 2 in the front view by the rotational drive source 36 Can be suppressed from increasing in diameter. Further, the cam original section 45 is formed on either one of the pin frame 47 having the cam pin 48 or the cylindrical cam 52 in which the corrugated groove 51 engaging with the cam pin 48 is recessed, and the cam follower section 46 is formed on the remaining one. Then, by changing the shape of the corrugated groove 51 of the cylindrical cam 52, various reciprocating motions can be realized, so that a massage stimulus having various amplitudes can be applied with a simple structure.

The cylindrical cam 52 is formed in a hollow cylindrical shape, the cylindrical cam 52 is arranged so as to cover the circumference of the rotation drive source 36, and the cam pin 48 and the corrugated groove 51 are the rotation drive source in the axial direction of the output shaft 38. If it is arranged so as to be within the length dimension width of 36, the rotation drive source 36 and the motion conversion mechanism 39 can be arranged in a state of being overlapped with each other in the axial direction of the output shaft 38. It is possible to prevent the dimension in the depth direction from becoming longer.

When the cam follower 46 is composed of a hollow cylindrical cylindrical cam 52, even if the diameter of the cylindrical cam 52 is increased in order to increase the distance of the corrugated groove 51 per circumference, the cylindrical cam is cylindrical. It can be formed lighter than the above. As a result, the inertial force of the cylindrical cam 52 when the direction of the reciprocating motion is reversed can be suppressed as much as possible, and the load of the rotational drive source 36 can be suppressed from greatly fluctuating. The cylindrical cam 52 can be accurately followed.

The massage body 3 includes a disk-shaped elastic base 12 that is supported by the casing 2 and can be elastically deformed in the thickness direction, and a group of protrusions 13 that are formed so as to project outward from the outer surface of the elastic base 12 and are pressed against the surface of the human body. The cam follower 46 and the connector 14 are interlocked via the interlocking body 65, including a connecting body 14 which is formed so as to project inward from the inner surface of the elastic base 12 and is connected to the cam follower 46. And, as compared with the case where the cam follower 46 and the connecting body 14 are directly connected, the interlocking body 65 can absorb the momentary reaction force when the massage body 3 is pressed against the human body surface, so that the driving body 65 can be driven. It is possible to prevent an excessive load from acting on the structure 4 as much as possible.

The inside of the casing 2 is divided into a first region 74 facing the mounting wall 34 on which the massage body 3 is arranged and a second region 75 on which the drive structure 4 is arranged by a diaphragm 76 fixed to the casing 2. Then, moisture such as sweat adhering to the first region 74 side where the massage body 3 is arranged can be prevented from entering the second region 75 where the drive structure 4 is arranged, so that the drive structure 4 is caused by the moisture. Can be prevented from falling into malfunction. Further, when the interlocking body 65 penetrates the diaphragm 76 in a watertight manner and is fixed to the diaphragm 76 which is elastically deformable at the penetrating portion, the interlocking body 65 and the diaphragm 76 can be integrally reciprocated. Therefore, it is possible to further prevent water from entering from the first region 74 to the second region 75 through the penetrating portion. Incidentally, if the interlocking body 65 only penetrates the diaphragm 76 in a watertight manner, the interlocking body 65 reciprocates while sliding with respect to the diaphragm 76, so that the water content is in the first region as the sliding occurs. There is a risk of invading the second region 75 from 74 little by little.

A water supply port 85 for supplying water from an external water source is provided in the first region 74 of the casing 2, and water is supplied to the mounting wall 34 of the casing 2 in which the massage body 3 is arranged via the first region 74. When a group of spouts 86 for discharging the water supplied from the mouth 85 are provided, in addition to the massage stimulation of the human body surface by the massage body 3, the pressure stimulus of the water jetted from the spout 86 is applied to the human body surface. Since it can be imparted, the massage effect can be further enhanced. Further, when the massage device 1 is used for the scalp, a massage stimulus can be applied to the scalp while washing the hair.

If a water passage 87 from the water supply port 85 to the group of water discharge ports 86 is formed in the first region 74 in a state of being separated from the diaphragm 76, it is possible to prevent the first region 74 from being filled with water. Water does not come into contact with the diaphragm 76, and water can be reliably prevented from entering the second region 75.

When a group of spouts 86 are formed on the mounting wall 34 facing the outer peripheral edge of the elastic base 12 of the massage body 3, when the massage device 1 is moved in one direction, the massage stimulation by the massage body 3 and the spouting The pressure stimulus of water ejected from the water port 86 can be sequentially applied to the surface of the human body.

When the elastic base 12 of the massage body 3 is formed in a ring shape and a group of spouts 86 are formed on the mounting wall 34 surrounded by the elastic base 12, the massage device 1 is moved in one direction as described above. When moved, the massage stimulus by the massage body 3 and the pressure stimulus of the water ejected from the spout 86 can be sequentially applied to the surface of the human body. Further, since the water jetted and reflected on the surface of the human body can be received by the protrusion 13 of the massage body 3, it is possible to prevent the sprayed water from scattering to the surroundings as much as possible.

The elastic base 12 of the massage body 3 is formed in a ring shape, and a group of spouts 86 are formed on a mounting wall 34 facing the outer peripheral edge of the elastic base 12 of the massage body 3 and a mounting wall 34 surrounded by the elastic base 12. When each is formed, a massage stimulus and a pressure stimulus can be sequentially applied to the surface of the human body in the same manner as described above. Further, when the massage device 1 is used for the scalp, a large amount of water can be supplied to the hair from inside and outside the massage body 3, so that the detergent and the like can be washed away more quickly.

It is a conceptual diagram which shows the main part of the massage apparatus which concerns on Example 1 of this invention. It is a front view which shows the massage apparatus which concerns on Example 1. FIG. FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 2 is a cross-sectional view taken along the line BB in FIG. It is a disassembled vertical sectional side view of a head case. It is an exploded side view of a drive structure. It is a front view which shows the state which separated the massage body from a head case. It is a side view which shows the state which separated the massage body and a power supply unit from a head case. It is a development view of the cam follow-up of the massage apparatus which concerns on Example 2 of this invention. It is a conceptual diagram which shows the drive structure of the massage apparatus which concerns on Example 3 of this invention. It is a conceptual diagram which shows the drive structure of the massage apparatus which concerns on Example 4 of this invention. It is a conceptual diagram which shows the drive structure of the massage apparatus which concerns on Example 5 of this invention. It is a conceptual diagram which shows the drive structure of the massage apparatus which concerns on Example 6 of this invention. It is a conceptual diagram which shows the drive structure of the massage apparatus which concerns on Example 7 of this invention. It is a front view which shows the massage apparatus which concerns on Example 8 of this invention. FIG. 15 is a cross-sectional view taken along the line CC in FIG. It is a conceptual diagram which shows the main part of the massage apparatus which concerns on Example 8. It is a front view which shows the state which separated the massage body from a head case. It is a conceptual diagram which shows the drive structure of the massage apparatus which concerns on Example 9 of this invention.

(Example 1) FIGS. 1 to 8 show Example 1 of the massage device according to the present invention. The front-back, left-right, and up-down in this embodiment follow the crossing arrows shown in FIGS. 2, 3, and 8, and the front-back, left-right, and up-down indications shown in the vicinity of each arrow. In FIG. 2, the massage device 1 reciprocates between a casing 2 that constitutes the outer shell of the device 1, a massage body 3 that is pressed against the surface of the human body to give a massage stimulus, and a massage body 3 that is arranged inside the casing 2. It is provided with a drive structure 4 to be operated. In this embodiment, the massage device 1 is incorporated in a shower head, and the casing 2 includes a drum-shaped head case 5 and a grip 6 extending forward and downward from the lower peripheral surface of the head case 5.

As shown in FIGS. 3 and 8, a power supply unit 7 that supplies electric power to the drive structure 4 is detachably attached to the rear portion of the head case 5, and the external shape of the power supply unit 7 is a truncated cone shape. ing. Inside the grip 6 near the front surface, a changeover switch 8 for switching the operation of the drive structure 4 and two display light sources 9 composed of chip LEDs for displaying the operation state of the drive structure 4 are mounted on the substrate. is set up. When the changeover switch 8 is operated via the surface of the grip 6 from the state where the drive structure 4 is stopped, the drive structure 4 is driven at a low speed and the lower display light source 9 is turned on. Next, when the changeover switch 8 is operated, the drive structure 4 is driven at high speed, the lower display light source 9 is turned off, and the upper display light source 9 is turned on. Next, when the changeover switch 8 is operated, the operation of the drive structure 4 is stopped and the upper display light source 9 is turned off. The light of the display light source 9 can be visually recognized through the surface of the grip 6.

The entire massage body 3 is integrally formed of an elastically deformable and translucent material, and as shown in FIGS. 1 and 4, an elastic base 12 made of a ring-shaped disk and the elastic base 3 are formed. A group of protrusions 13 protruding forward (outward) from the front surface (outer surface) of the 12 and four connecting bodies 14 protruding backward (inward) from the rear surface (inner surface) of the elastic base 12. It has. The group of protrusions 13 are formed at equal intervals on the double concentric circles of the elastic base 12, and the elastic base 12 and the group of protrusions 13 are brush-shaped. The connecting bodies 14 are provided at equal intervals, and through-shaped connecting holes 15 are provided near the rear ends thereof. The elastic base 12 includes a circular outer peripheral wall 16 extending rearward from the outer peripheral edge, and the outer peripheral wall 16 is formed in a hollow cylindrical shape having a multi-step cross section. Further, the elastic base 12 includes a circumferential inner peripheral wall 17 extending rearward from the inner peripheral edge, and the inner peripheral wall 17 is formed in a hollow cylindrical shape having a recumbent V-shaped cross section.

As shown in FIGS. 3 and 5, the head case 5 includes an intermediate case 20, a rear case 21 mounted behind the intermediate case 20, and a cover case 22 mounted so as to cover the outer surface of the rear case 21. And a front case 23 that is detachably attached to the front side of the intermediate case 20. The intermediate case 20 is formed in a bottomed tubular shape that opens backward with a cylindrical intermediate peripheral wall 24 and an intermediate bottom wall 25 that closes the front opening of the intermediate peripheral wall 24, and a grip 6 is formed on the lower surface of the intermediate peripheral wall 24. A grip base 26 is provided to which the above is connected.

The rear case 21 is formed in a bottomed tubular shape that opens forward with a cylindrical rear peripheral wall 27 and a rear bottom wall 28 that closes the rear opening of the rear peripheral wall 27. Similarly, the cover case 22 is cylindrical. The cover peripheral wall 29 and the cover bottom wall 30 that closes the rear opening of the cover peripheral wall 29 are formed in a bottomed cylindrical shape that opens forward. The front case 23 includes a cylindrical front peripheral wall 31 and a ring-shaped front bottom wall 32 provided on the inner surface side of the front end of the front peripheral wall 31. The inside of the front bottom wall 32 is a mounting opening 33 for mounting the massage body 3, and the front bottom wall 32 is a mounting wall 34 on which the massage body 3 is mounted.

As shown in FIGS. 1 and 6, the drive structure 4 includes a DC motor (rotational drive source) 36 driven by electric power supplied from the power supply unit 7, a motor case 37 to which the motor 36 is fixed, and a motor. It is provided with a motion conversion mechanism 39 or the like that converts the rotational motion of the output shaft 38 of the 36 into a reciprocating motion. The motor 36 is integrally provided with a speed reducer. The motor case 37 is formed in a hollow cylindrical shape in which the front motor case 40 and the rear motor case 41 can accommodate the motor 36, and both

cases

40 and 41 are integrally fastened and fixed by four screws 42. The front motor case 40 is provided with a through hole 43 through which an interlocking body 65, which will be described later, is inserted (see FIG. 4). The rotary drive source 36 may be configured such that the motor and the speed reducer are separate bodies, or may be a single motor.

The motion conversion mechanism 39 is composed of a cam mechanism including a cam original section 45 which is connected to the output shaft 38 of the motor 36 and is rotationally driven, and a cam slave section 46 which is reciprocally driven by the cam original section 45. .. The cam original section 45 is composed of a pin frame 47 that is rotationally driven by the output shaft 38 and a cam pin 48 that is provided on the pin frame 47 and rotates around the output shaft 38. The pin frame 47 is formed in a bottomed tubular shape that opens forward with a cylindrical frame peripheral wall 49 and a frame bottom wall 50 that closes the rear opening of the frame peripheral wall 49, and faces the inner surface of the front end of the frame peripheral wall 49. A pair of cam pins 48 are installed at the positions. The output shaft 38 of the motor 36 is fixed to the frame bottom wall 50. The pin frame 47 (cam original section 45) is rotationally driven in the clockwise direction in front view.

The cam follower 46 is composed of a hollow cylindrical cylindrical cam 52 in which a corrugated groove 51 for receiving a cam pin 48 is recessed around the cam pin 48, and the corrugated groove 51 has the same amplitude in the expanded state for two cycles. It is formed in a sinusoidal shape. One cycle of the waveform consists of a reverse region BW that displaces the cylindrical cam 52 (cam follower 46) from the rearmost position to the rearmost position and a forward region FW that displaces the cylindrical cam 52 from the rearmost position to the rearmost position. It is composed of (see FIG. 1). The reverse region BW and the forward region FW are set to have the same length dimension in the circumferential direction on the outer peripheral surface of the cylindrical cam 52 (hereinafter, appropriately referred to as “circumferential dimension of the cylindrical cam 52”).

The outer diameter of the cylindrical cam 52 is formed to be slightly smaller than the inner diameter of the pin frame 47, and the inner diameter thereof is formed to be substantially the same as the outer diameter of the rear motor case 41. The front pin frame 47 and the cylindrical cam 52 are arranged so as to be fitted onto the rear motor case 41. Due to the dimensional relationship, the cylindrical cam 52 is supported by the rear motor case 41 so as to be fitted on the rear motor case 41. Is fitted onto the cylindrical cam 52 in a non-contact manner. A guide groove 53 is formed in a recess on the inner surface of the front end of the cylindrical cam 52, and the guide groove 53 is engaged with a guide rib 54 projecting from the rear motor case 41 (see FIG. 4). Four sets of guide grooves 53 and guide ribs 54 are provided at equal intervals, and the cylindrical cam 52 cannot rotate around the front-rear axis (the axial direction of the output shaft 38) and the front-rear direction due to these guide grooves 53 and the guide ribs 54. It is supported by the rear motor case 41 in a slidable state.

As shown in FIG. 6, the cylindrical cam 52 has a cylindrical cam body 57 and a ring-shaped cam lid 58 fixed to the rear end of the cam body 57 in order to engage the cam pin 48 with the corrugated groove 51. It has a two-piece structure. A pair of notches 59 for engaging the cam pin 48 with the corrugated groove 51 from the rear are provided on the facing peripheral surface on the outer side of the rear end of the cam body 57, and the cam lid 58 is provided with the lid 58. When fixed to the cam body 57, a pair of lid protrusions 60 that form a part of the corrugated groove 51 while closing the notch 59 are provided. To assemble the pin frame 47 and the cylindrical cam 52, first insert the cam lid 58 inside the frame peripheral wall 49 of the pin frame 47, and then align the cam pin 48 with respect to the notch 59 of the cam body 57. The cam pin 48 is inserted into the corrugated groove 51 through the notch 59. Next, the cam body 57 and the cam lid 58 are fixed with an adhesive while inserting the lid protrusion 60 into the notch 59. As a result, the pin frame 47 and the cylindrical cam 52 can be integrally formed so as to be relatively rotatable in a state where the cam pin 48 and the corrugated groove 51 are engaged with each other.

By fixing the output shaft 38 of the motor 36 housed in the motor case 37 to the frame bottom wall 50 with respect to the integrated pin frame 47 and the cylindrical cam 52, the motor 36, the motor case 37, and the pin frame 47 (cam original section 45) and cylindrical cam 52 (cam follow section 46) are integrated as a drive structure 4. In the drive structure 4 of the present embodiment, the axial direction of the output shaft 38 of the motor 36 and the motion direction of the cam follower 46 coincide with each other. In the state where the drive structure 4 is integrated, the motor case 37 in which the motor 36 is housed is covered with the hollow cylindrical cylindrical cam 52, and the cylindrical cam 52 is covered with the frame peripheral wall 49 of the pin frame 47, whereby the cam pin 48 , And the corrugated groove 51 are arranged so as to be within the front-rear dimension of the motor 36 (the length dimension of the motor 36 in the axial direction of the output shaft 38). The drive structure 4 is housed and arranged in the head case 5 with the front motor case 40 sandwiched between the intermediate case 20 and the rear case 21 constituting the head case 5 by both 20 and 21. The front motor case 40 and the intermediate case 20 are fastened and fixed with six screws 61, and the front motor case 40 and the rear case 21 are fastened and fixed with four screws 62 (see FIG. 4).

As shown in FIGS. 1 and 4, a cylindrical cam 52 (cam follower 46) is used to transmit the reciprocating power obtained by converting the rotational motion of the motor 36 into a reciprocating motion by the motion conversion mechanism 39 to the massage body 3. ) And the connecting body 14 of the massage body 3 are interlocked via the four interlocking bodies 65. Each interlocking body 65 is formed by a linear shaft-shaped spindle portion 66 and a U-shaped shaft-shaped connecting shaft portion 67 integrally provided at the front end of the spindle portion 66. The interlocking body 65 and the cylindrical cam 52 are male threads formed on the rear end side of the spindle portion 66 by inserting the spindle portion 66 into a through hole 70 formed in the interlocking seat 69 formed at the front end of the cylindrical cam 52. A pair of nuts 71 screwed into the portion 68 are moved toward the interlocking seat 69, and are fixed by sandwiching the interlocking seat 69 with both nuts 71. The four interlocking bodies 65 are arranged on a circle centered on the output shaft 38 of the motor 36 in the front view, and the axial direction of the open end side of the connecting shaft portion 67 is directed to the tangential direction of the circle. (See Fig. 7).

As shown in FIG. 4, a mounting wall in which the massage body 3 is arranged inside the head case 5 (casing 2) between the intermediate bottom wall 25 of the intermediate case 20 and the front motor case 40 of the motor case 37. A diaphragm 76 that partitions the first region 74 facing the 34 and the second region 75 in which the drive structure 4 is arranged is fixed. The diaphragm 76 is made of a material that is elastically deformable and has translucency, and is formed in a disk shape. There is.

As shown in FIGS. 1 and 4, four through seats 78 having through holes 77 penetrating the front and rear are provided in the radial central portion of the diaphragm 76 corresponding to the interlocking body 65. .. Further, the intermediate bottom wall 25 is provided with four lead-out openings 79 corresponding to the interlocking body 65. The connection shaft portion 67 of the interlocking body 65 is located in the first region 74 via the through hole 43, the through hole 77, and the lead-out opening 79. A disk-shaped flange 80 and a large-diameter shaft portion 81 having a large shaft diameter are formed in the front and rear in the middle portion of the main shaft portion 66 of the interlocking body 65, and in the middle portion of the through hole 77 of the through seat 78. A large-diameter hole portion 82 having a large hole diameter is formed. In the spindle portion 66 penetrating the through seat 78, the large diameter shaft portion 81 is engaged with the large diameter hole portion 82, and the rear surface of the flange 80 is in close contact with the front surface of the through seat 78. As a result, the interlocking body 65 penetrates the diaphragm 76 in a watertight manner and is fixed to the diaphragm 76 at the penetrating portion. When the interlocking body 65 is reciprocated, the diaphragm 76 of the portion that is not sandwiched and fixed by the head case 5 is elastically deformed in the front-rear direction together with the interlocking body 65, and a bellows-like movement occurs.

As shown in FIG. 8, the head case 5 (casing 2) is provided with a water supply port 85, and water from an external water source is supplied to the water supply port 85 via the grip 2. The water supply port 85 communicates with the first region 74. The mounting wall 34 (front bottom wall 32) facing the first region 74 is provided with a group of spouts 86 for discharging the water supplied to the water supply port 85. A water passage 87 from a water supply port 85 to a group of water discharge ports 86 is formed in the first region 74, and the water passage 87 is partitioned by a water channel frame 88 provided in the first region 74.

As shown in FIGS. 3 and 7, the water channel frame 88 includes a circular ring-shaped outer frame 89, a bottomed cylindrical inner frame 90 that opens forward, an inner peripheral surface of the outer frame 89, and an outer circumference of the inner frame 90. It is provided with four radial frames 91 connected to the surface, and is fixed to the front surface of the intermediate bottom wall 25 of the intermediate case 20. Each radiation frame 91 is formed in a hollow shape and has a communication channel 92 at its axial center portion. One end of the communication channel 92 opens to the outer peripheral surface of the outer frame 89, and the other end is inside the inner frame 90. It has an opening on the peripheral surface. A cap body 96 having a front wall 95 that closes the front opening of the frame 90 is detachably attached to the inner frame 90. In FIGS. 4 and 8, reference numeral 99 is five screws for fixing the channel frame 88 to the intermediate bottom wall 24.

The massage body 3 is attached to the head case 5 (casing 2) by the front case 23 and the cap body 96. The front case 23 is detachably configured with a screw structure consisting of male and

female screw portions

101 and 102 with respect to the intermediate case 20, and the female screw portion 101 is engraved on the rear inner edge of the front case 23 to form an intermediate case. A male screw portion 102 is engraved on the front outer edge of the 20. Further, the cap body 96 is detachably configured with respect to the inner frame 90 by a screw structure composed of male and

female screw portions

103 and 104, and the female screw portion 103 is engraved on the rear inner edge of the cap body 96. A male screw portion 104 is engraved on the front outer edge of the inner frame 90. In a state where the massage body 3 is attached to the head case 5, an annular water channel 97 is defined by the intermediate bottom wall 25, the front peripheral wall 31, the front bottom wall 32, and the outer frame 89, and the inner frame 90 and the inner frame 90. A columnar columnar water channel 98 is defined by the cap body 96. The annular waterway 97 and the columnar waterway 98 are communicated with each other by the communication waterway 92, and the waterway 87 is composed of these three

parties

92, 97, and 98.

In this embodiment, the front wall 95 of the cap body 96 constitutes the mounting wall 34 of the massage body 3 together with the front bottom wall 32 facing the outer peripheral edge of the elastic base 12 of the massage body 3. As shown, a group of spouts 86 are formed on the front bottom wall 32 and the front wall 95 at equal intervals on double concentric circles, respectively. In FIG. 4, reference numeral 105 is a seal ring, which seals between the intermediate bottom wall 25 and the front peripheral wall 32, between the intermediate bottom wall 25 and the outer frame 89, and between the intermediate bottom wall 25 and the inner frame 90, respectively. doing. Further, the front bottom wall 32 and the outer frame 89 are sealed by the outer peripheral wall 16 of the massage body 3, and the inner frame 90 and the cap body 96 are sealed by the inner peripheral wall 17 of the massage body 3. .. With these seal structures, the annular channel 97 and the columnar channel 98 are configured as watertight channels, and the water in the channel 87 does not leak to the first region 74 outside the channel 87.

As shown in FIGS. 3 and 8, the power supply unit 7 has a hollow conical trapezoidal unit case 108, and a battery substrate that controls charging and discharging of the secondary battery 109 and the secondary battery 109 arranged inside the unit case 108. It includes 110, a pair of output terminals 111 whose part is exposed on the outer surface of the unit case 108, a charging terminal 112 for supplying charging power to the secondary battery 109, and the like. The charging terminal 112 is arranged in the front recess of the power supply unit 7, and the front recess can be opened and closed by the watertight lid 113. The front surface of the watertight lid 113 is flush with the front surface of the unit case 108. On the front surface of the unit case 108, an engaging claw 114 having an L-shaped cross section for mounting the power supply unit 7 on the head case 5 (casing 2) is projected, and the engaging claw 114 is the front surface of the unit case 108. Four are provided at equal intervals on a circle centered on the center. The pair of output terminals 111 are each exposed on the front surface of the engaging claws 114 located at opposite positions.

The cover bottom wall 30 of the cover case 22 is formed with four engaging holes 115 corresponding to the above engaging claws 114, and the engaging claws 114 are inserted into the engaging holes 115 to supply power when viewed from the rear. By rotating the unit 7 in the clockwise direction, the engaging claw 114 can be locked in the engaging hole 115. In FIG. 8, reference numeral 116 is a lock piece that can be slid back and forth, and reference numeral 117 is a lock groove 117 formed in the unit case 108. The lock piece 116 is slid rearward and engaged with the lock groove 117 to engage the head case. The rotation of the power supply unit 7 with respect to 5 can be locked, and the fixed state of both 5.7 can be maintained. When separating the power supply unit 7, the lock piece 116 is slid forward to release the engagement with the lock groove 117, and the power supply unit 7 is rotated counterclockwise in the rear view to cause an engagement hole. The engaging claw 114 can be separated from the 115.

An input terminal 118 that comes into contact with the output terminal 111 is provided so that the output terminal 111 faces the engaging hole 115 corresponding to the exposed engaging claw 114. The input terminal 118 is supported by a packing 119 for making the head case 5 watertight at the terminal 118 portion so as to be slidable back and forth, and is further urged rearward by a compression coil type pressing spring 120. When the power supply unit 7 is attached to the head case 5, the input terminal 118 is pressed against the output terminal 111 by the urging force of the pressing spring 120, so that both

terminals

111 and 118 are in proper contact with each other. ing.

As shown in FIG. 3, a control board 123 for controlling the massage device 1 is provided in the second region 75 together with the drive structure 4, and the control board 123 is formed in a semi-ring shape with the intermediate case 20 and the drive structure. It is arranged in a circular space between 4 and 4. Further, in the second region 75 between the intermediate case 20 and the motor case 37, eight illumination light sources 125 made of full-color chip LEDs mounted on the ring-shaped illumination substrate 124 are provided (FIG. 5). , See FIG. 7). The light of the illumination light source 125 is transmitted to the outside through the translucent diaphragm 76 and the massage body 3, and displays the drive state (low speed or high speed) of the drive structure 4 in synchronization with the display light source 9, and at the same time. Illuminate the direction of water discharge. Further, the illumination light source 125 can function as an illumination by changing the lighting state and the emission color in various ways, and can improve the taste and design of the massage device 1. Further, a confirmation display function for displaying whether or not the power supply unit 7 is properly mounted can be added to the illumination light source 125. In this case, when the power supply unit 7 is properly mounted, for example, the illumination light source 125 is turned on in blue and turned off after a predetermined time (10 seconds) has elapsed. Since the light of the illumination light source 125 is emitted from the surface of the massage body 3, it is easy for the user who uses the massage device 1 to see it, and it is easy to check the operating state of the drive structure 4 and the mounting state of the power supply unit 7. And can function as an excellent display means.

To attach the massage body 3, first cover the massage body 3 on the water channel frame 88 from the front side from the state shown in FIG. 7, and face the tip of the connecting shaft portion 67 on the open end side with the connecting hole 15 of the connecting body 14. From this state, the massage body 3 is rotated clockwise in the front view. As a result, the connecting shaft portion 67 penetrates into the connecting hole 15 to connect the interlocking body 65 and the massage body 3. Next, the front case 23 is attached to the intermediate case 20, and the cap body 96 is further attached to the inner frame 90, whereby the massage body 3 is fixed to the head case 5. When the female threaded portion 101 of the front case 23 and the male threaded portion 102 of the intermediate case 20 are screwed together, the rear end of the outer peripheral wall 16 of the massage body 3 is sandwiched and held between the outer frame 89 and the rear end of the mounting opening 33. Further, when the male screw portion 104 of the inner frame 90 and the female screw portion 103 of the cap body 96 are screwed together, the rear end of the inner peripheral wall 17 of the massage body 3 is sandwiched and held between the inner frame 90 and the rear end of the cap body 96. NS. As a result, the massage body 3 is fixed to the head case 5 in a state where the elastic base 12 can be elastically deformed in the front-rear direction. When the massage body 3 is separated from the head case 5 for cleaning or the like, it can be easily removed by releasing the screwed structure of the front case 23 and the cap body 96.

When the massage body 3, the front case 23, and the cap body 96 are attached to the head case 5, the massage device 1 covers the first region 74 facing the diaphragm 76 by the seal structure related to the massage body 3 and the packing 105. Water does not enter. However, when the massage body 3 was separated as shown in FIG. 7 for cleaning or replacing the massage body 3, that is, the head case 5, the front case 23, and the cap body 96 were unscrewed and the massage body 3 was removed. Occasionally, the diaphragm 76 is exposed in front of the head case 5. If the diaphragm 76 is not provided, water may adhere to the drive structure 4 when the massage body 3 is washed or the like. A diaphragm 76 is required to avoid such a problem, and the diaphragm 76 receives water to make the drive structure 4 and the like waterproof.

When the massage device 1 applies a massage stimulus to the surface of the human body, the changeover switch 8 is operated to drive the drive structure 4. When the motor 36 is driven at a low speed or a high speed, the cam pin 48 is rotationally driven around the motor 36 by the pin frame 47, and the cylindrical cam 52 that receives the rotation of the cam pin 48 in the corrugated groove 51 outputs the motor 36. It is reciprocated in a direction that coincides with the axial center direction (front-back direction) of the shaft 38. The movement of the cylindrical cam 52 is transmitted to the massage body 3 via the interlocking body 65, and the elastic base 12 is elastically deformed in the front-rear direction. Along with this, each protrusion 13 is expanded and contracted in the radial direction (diameter direction) in the front view, and a massage stimulus is applied to the surface of the human body. In this embodiment, since the protrusions 13 arranged in a circumferential shape are expanded and contracted in the radial direction, when the protrusions 13 in the expanded state are displaced to the contracted state, the massage stimulus is a rubbing motion on the surface of the human body. The cam follower 46 during the fir operation is displaced from the front to the rear.

Since the corrugated groove 51 of the cylindrical cam 52 has a sinusoidal shape for two cycles, each cam pin 48 passes through the reverse region BW and the forward region FW of the corrugated groove 51 twice each time the motor 36 makes one rotation. Therefore, the cylindrical cam 52 reciprocates twice. Although the amplitude of the corrugated groove 51 for each cycle is formed to be the same, the amplitude may be different for each cycle. In this case, the movement of the cylindrical cam 52 for each cycle, that is, the massage body 3 is performed. The distance can be different. Further, the period of the corrugated groove 51 may be three or more periods or one period. Further, the corrugated groove 51 can be composed of either a curved line only, a straight line (polygonal chain), or a combination of a curved line and a straight line. In this embodiment, the corrugated groove 51 is composed of only a curved line. Is configured.

According to the massage device of the first embodiment, the cylindrical cam 52 formed in a hollow cylindrical shape is arranged so as to cover the circumference of the motor 36, and the cam pin 48 and the corrugated groove 51 are arranged in the axial direction of the output shaft 38. Since the motor 36 was arranged so as to be within the length and width of the motor 36, the motor 36 and the motion conversion mechanism 39 were arranged so as to overlap each other in the axial direction of the output shaft 38, and the depth direction of the casing 2 in the front view ( It is possible to suppress the lengthening of the dimension (in the front-back direction).

Since the cam follower 46 is composed of a hollow cylindrical cylindrical cam 52, even if the diameter of the cylindrical cam 52 is increased in order to increase the distance of the corrugated groove 51 per circumference, it is compared with the cylindrical cam. Can be formed lightweight. As a result, the inertial force of the cylindrical cam 52 when the direction of the reciprocating motion is reversed can be suppressed as much as possible, and the load of the motor 36 can be suppressed to fluctuate significantly. Further, the cylindrical cam can be suppressed with respect to the rotation of the cam pin 48. 52 can be accurately followed.

Since the cam follower 46 composed of the cylindrical cam 52 and the connecting body 14 are configured to be interlocked via the interlocking body 65, the massage body 3 is compared with the case where the cylindrical cam 52 and the connecting body 14 are directly connected. The momentary reaction force when the cam is pressed against the surface of the human body can be absorbed by the interlocking body 65, and an excessive load can be prevented from acting on the drive structure 4 as much as possible.

Since the inside of the casing 2 is partitioned by a diaphragm 76 into a first region 74 facing the mounting wall 34 on which the massage body 3 is arranged and a second region 75 on which the drive structure 4 is arranged, the massage body 3 is arranged. Moisture such as sweat adhering to the first region 74 side can be prevented from entering the second region 75, and the drive structure 4 can be prevented from malfunctioning due to the moisture. Further, since the interlocking body 65 penetrates the diaphragm 76 in a watertight manner and is fixed to the diaphragm 76 that can be elastically deformed at the penetrating portion, the interlocking body 65 and the diaphragm 76 are integrally reciprocated to move the penetrating portion. It is possible to further prevent water from entering the second region 75 from the first region 74 through the passage. Incidentally, if the interlocking body 65 only penetrates the diaphragm 76 in a watertight manner, the interlocking body 65 reciprocates while sliding with respect to the diaphragm 76, so that the water content is in the first region as the sliding occurs. There is a risk of invading the second region 75 from 74 little by little.

A group of spouts 86 for discharging water supplied from the water supply port 85 through the first region 74 is provided on the mounting wall 34 of the casing 2 on which the massage body 3 is arranged, so that the massage body 3 massages the surface of the human body. In addition to the stimulus, a pressure stimulus of water ejected from the spout 86 can be applied to the surface of the human body to further enhance the massage effect. Further, when the massage device 1 is used for the scalp, a massage stimulus can be applied to the scalp while washing the hair.

Since the water passage 87 from the water supply port 85 to the group of water discharge ports 86 is formed in the first region 74 in a state of being separated from the diaphragm 76, it is possible to prevent the first region 74 from being filled with water and to prevent the diaphragm 76 from being filled. It is possible to reliably prevent the water from entering the second region 75 as the water comes into contact with the second region 75.

The elastic base 12 of the massage body 3 is formed in a ring shape, and a group of spouts 86 are surrounded by a front bottom wall 32 (mounting wall 34) facing the outer peripheral edge of the elastic base 12 of the massage body 3 and an elastic base 12. Since each of them is formed on the front wall 95 (mounting wall 34), when the massage device 1 is moved in one direction, the massage stimulus and the pressure stimulus can be sequentially applied to the surface of the human body. Further, when the massage device 1 is used for the scalp, a large amount of water can be supplied to the hair from inside and outside the massage body 3, so that the detergent and the like can be washed away more quickly. Since the water ejected from the group of spouts 86 formed on the front wall 95 and reflected on the surface of the human body is received by the protrusions 13 of the massage body 3, it is possible to prevent the water from scattering to the surroundings as much as possible. The group of spouts 86 may be formed only on either the front bottom wall 32 facing the outer peripheral edge of the elastic base 12 or the front wall 95 surrounded by the elastic base 12, and in this case as well, the above Similarly, when the massage device 1 is moved in one direction, the massage stimulus and the pressure stimulus can be sequentially applied to the surface of the human body.

(Example 2) FIG. 9 shows Example 2 of the massage device according to the present invention. In this embodiment, the shape of the corrugated groove 51 of the cylindrical cam 52 is different from that of the first embodiment. Since the other points are the same as those in the first embodiment, the same structures and members are designated by the same reference numerals and the description thereof will be omitted. The same shall apply to each of the following examples.

FIG. 9 is a developed view of the cylindrical cam 52 (cam follower section 46), and conceptually shows the waveform of the corrugated groove 51 and the cam pin 48. The cylindrical cam 52 is formed with a corrugated groove 51 having a waveform for two cycles. The reverse region BW (region of contraction (fir) operation) is a first region Z1 that displaces the cylindrical cam 52 from the frontmost position to the middle part of the reverse movement, and a second region that temporarily holds the position of the cylindrical cam 52 in the middle part of the reverse movement. It includes a region Z2 and a third region Z3 that displaces the cylindrical cam 52 from the middle part of the reverse movement to the rearmost position. The forward region FW (expansion operation region) is a fourth region Z4 that temporarily holds the cylindrical cam 52 at the rearmost position and a fifth region Z5 that displaces the cylindrical cam 52 from the rearmost position to the frontmost position. And have. The corrugated grooves 51 of the first region Z1, the third region Z3, and the fifth region Z5 are formed so as to be inclined with respect to the circumferential direction of the cylindrical cam 52, and the waveforms of the second region Z2 and the fourth region Z4. The groove 51 is formed along the circumferential direction of the cylindrical cam 52. In the unfolded state of the cylindrical cam 52, the corrugated grooves 51 of the first region Z1, the third region Z3, and the fifth region Z5 that are inclined with respect to the circumferential direction of the cam 52 are linear, and their start and end are linear. Is rounded to smoothly connect to adjacent areas. When the connecting portion between the adjacent regions is rounded in this way, the movement of the cam pin 48 when straddling between the regions can be smoothed.

The peripheral dimension of the cylindrical cam 52 in the reverse region BW is LA, the peripheral dimension of the cylindrical cam 52 in the forward region FW is LB, the peripheral dimension of the cylindrical cam 52 in the first region Z1 is LC, and the peripheral dimension of the cylindrical cam 52 in the second region Z2 is the circumference. The dimensions are defined as LD, the circumferential dimension of the cylindrical cam 52 in the third region Z3 is defined as LE, and the circumferential dimension of the cylindrical cam 52 in the fourth region Z4 is defined as LF. At this time, the peripheral dimensions LA and LB are set to be the same, and the relationship between the peripheral dimensions LC, LD, and LE is set so as to satisfy the inequality (0 <LD <(LC + LE)). Further, the relationship between the peripheral dimensions LA and LC is set so as to satisfy the inequality (LC ≧ LA / 2). Further, the relationship between the peripheral dimensions LD and LF is set so as to satisfy the inequality (0 <LF <LD). In this embodiment, when LD is 1, LA and LB are set to 6.5, LC is set to 3.5, LE is set to 2, and LF is set to 0.7.

When the inclination angle of the corrugated groove 51 in the first region Z1 is defined as α and the inclination angle of the corrugated groove 51 in the third region Z3 is defined as β with respect to the circumferential direction of the cylindrical cam 52, the relationship between the inclination angles α and β is , Is set to satisfy the inequality (α <β).

The reciprocating operation of the massage body 3 by the cylindrical cam 52 provided with the corrugated groove 51 configured as described above will be described. First, when the cam pin 48 is received in the first region Z1 of the corrugated groove 51, that is, when the cylindrical cam 52 is displaced from the frontmost position toward the rear, the massage body 3 contracts from the expanded state (hereinafter, appropriately). Performs "fir movement") at a constant speed. Next, when the cam pin 48 is received in the second region Z2 of the corrugated groove 51, that is, when the cylindrical cam 52 is temporarily held in position, the massage body 3 temporarily stops the massage operation. Then, when the cam pin 48 is received in the third region Z3 of the corrugated groove 51, that is, when the cylindrical cam 52 is displaced rearward again, the massage body 3 resumes the rubbing operation. At this time, due to the relationship between the inclination angles α and β of the corrugated grooves 51 in the first region Z1 and the third region Z3, the operation speed of the rear-stage rubbing operation is faster than that of the front-stage rubbing operation.

Next, when the cam pin 48 is received in the fourth region Z4 of the corrugated groove 51, that is, when the cylindrical cam 52 is temporarily held at the rearmost position, the massage body 3 temporarily stops in a state where the massage operation is completed. Next, when the cam pin 48 is received in the fifth region Z5 of the corrugated groove 51, that is, when the cylindrical cam 52 is displaced toward the frontmost position, the massage body 3 performs the expanding operation from the contracted state at a constant speed. After that, the above-mentioned operations of fir, stop, fir, stop, and expansion are repeated.

In the above embodiment, the peripheral dimensions LA and LB are set to be the same, and the time during the contraction operation and the time during the expansion operation of the brush-shaped massage body 3 are the same, but the above LA and LB are different. Therefore, the time during the contraction operation and the time during the expansion operation can be made different. The corrugated grooves 51 of the first region Z1, the third region Z3, and the fifth region Z5 in the deployed state of the cylindrical cam 52 may be curved. A pause portion such as the second region Z2 may be provided in the middle of the first region Z1 and / or the fifth region Z5.

The massage device according to the second embodiment can be expressed as follows.

It includes a casing 2, a massage body 3 arranged on the mounting wall 34 of the casing 2 and pressed against the surface of the human body, and a drive structure 4 arranged inside the casing 2 to reciprocate the massage body 3. ,
The drive structure 4 includes a rotary drive source 36 and a motion conversion mechanism 39 that converts the rotary motion of the rotary drive source 36 into a reciprocating motion.
The motion conversion mechanism 39 is composed of a cam mechanism including a cam original section 45 that is rotationally driven by the rotational drive source 36 and a cam slave section 46 that is reciprocally driven by the cam original section 45.
The cam original section 45 is composed of a pin frame 47 having a cam pin 48, and the cam slave section 46 is composed of a cylindrical cam 52 in which a corrugated groove 51 that engages with the cam pin 48 is formed.
The massage body 3 includes a disk-shaped elastic base 12 that is supported by the casing 2 and can be elastically deformed in the thickness direction, and a group of protrusions 13 that are formed so as to project outward from the outer surface of the elastic base 12 and are pressed against the surface of the human body. The elastic base 12 is elastically deformed in the front-rear direction (thickness direction) in synchronization with the reciprocating motion of the cylindrical cam 52.
The corrugated groove 51 includes a reverse region BW that receives the rotation of the cam pin 48 and displaces the cylindrical cam 52 backward, and a forward region FW that receives the rotation of the cam pin 48 and displaces the cylindrical cam 52 forward. ,
A massage device in which the reverse region BW is configured to include a second region Z2 that temporarily interrupts the reverse movement of the cylindrical cam 52.

When the reverse region BW is configured to include the second region Z2 that temporarily interrupts the backward movement of the cylindrical cam 52 as in the massage device 1, the massage body 3 is temporarily massaged in the middle of the operation. Since the massage operation can be performed in two stages by stopping the massage operation, the massage operation can be changed and the massage feeling can be enhanced.

The reverse region BW includes a first region Z1 that displaces the cylindrical cam 52 from the frontmost position to the middle part of the reverse movement, a second region Z2 that temporarily holds the position of the cylindrical cam 52 in the middle part of the reverse movement, and the cylindrical cam 52. It is equipped with a third region Z3 that displaces from the middle part of the reverse movement to the rearmost position.
When the peripheral dimension of the cylindrical cam 52 in the first region Z1 is defined as LC, the peripheral dimension of the cylindrical cam 52 in the second region Z2 is defined as LD, and the peripheral dimension of the cylindrical cam 52 in the third region Z3 is defined as LE, the peripheral dimension LC. A massage device in which the relationship between LD and LE is set so as to satisfy the inequality (0 <LD <(LC + LE)).

When the relationship between the peripheral dimensions of the first to third regions Z1 to Z3 is set so as to satisfy the inequality (0 <LD <(LC + LE)) as in the massage device 1 described above, the massage body 3 Since the massage operation time can be made longer than the massage holding time, a sufficient massage feeling can be obtained even when the massage body 3 is stopped during the massage operation.

A massage device in which the relationship between the peripheral dimensions LA and LC is set so as to satisfy the inequality (LC ≧ LA / 2) when the peripheral dimension of the cylindrical cam 52 in the reverse region BW is defined as LA.

When the relationship between the peripheral dimensions LA and LC is set so as to satisfy the inequality (LC ≧ LA / 2) as in the massage device 1 described above, the massage device is held after being subjected to a relatively large massage operation. After that, since a massage stimulus for performing a relatively small rubbing motion can be applied to the surface of the human body, it is possible to give a change in size to the two-step rubbing motion to further enhance the massage feeling.

The forward region FW includes a fourth region Z4 in which the cylindrical cam 52 temporarily holds the position at the rearmost position and a fifth region Z5 in which the cylindrical cam 52 is displaced forward from the rearmost position to the frontmost position. Equipped with a massage device.

When the forward region FW includes the fourth region Z4 that temporarily holds the position of the cylindrical cam 52 at the rearmost position as in the massage device 1 described above, it is squeezed into the end of the rubbing operation, that is, the maximum. Since the state can be maintained, it is possible to give a sharp massage action to the surface of the human body and further enhance the feeling of massage. Further, since the switching of the moving direction of the cylindrical cam 52 between the third region Z3 of the reverse region BW and the fifth region Z5 of the forward region FW can be buffered in the fourth region Z4, a large inertial force is applied to the cylindrical cam 52. It is possible to avoid the occurrence and smooth the movement of the cam pin 48.

A massage device in which the relationship between the peripheral dimensions LD and LF is set to satisfy the inequality (0 <LF <LD) when the peripheral dimension of the cylindrical cam 52 in the fourth region Z4 is defined as LF.

When the relationship between the peripheral dimensions LD and LF is set so as to satisfy the inequality (0 <LF <LD) as in the massage device 1 described above, the massage device is held in a strongly squeezed state for a long time. Therefore, it is possible to suppress a decrease in the feeling of massage due to the continuation of a strong massage stimulus.

When the inclination angle of the corrugated groove 51 in the first region Z1 is defined as α and the inclination angle of the corrugated groove 51 in the third region Z3 is defined as β with respect to the circumferential direction of the cylindrical cam 52, the relationship between the inclination angles α and β is determined. A massage device set to satisfy the inequality (α <β).

When the relationship between the inclination angles α and β is set so as to satisfy the inequality (α <β) as in the massage device 1 described above, the fir in the second stage is higher than the fir speed in the first stage of the two-step fir operation. Since the speed can be increased, it is possible to give a more sharp massage motion to the surface of the human body.

(Example 3) FIG. 10 shows Example 3 of the massage device according to the present invention. In this embodiment, the drive structure 4 is different from that of the first embodiment. The pin frame 47 is composed of a disk-shaped rotating base 127 fixed to the output shaft 38 and a pair of rotating arms 128 arranged to face each other on the front surface of the rotating base 127, and a cam pin is attached to the tip (front end) of the rotating arm 128. 48 are provided respectively. As described above, according to the pin frame 47 provided with the cam pin 48 at the tip of the rotary arm 128, the rotary arm 128 can be elastically deformed to engage the cam pin 48 with the corrugated groove 51 of the cylindrical cam 52. Therefore, the configuration of the drive structure 4 can be simplified because the cylindrical cam 52 does not need to have a two-piece structure as in the first embodiment.

(Example 4) FIG. 11 shows Example 4 of the massage device according to the present invention. The pin frame 47 of this embodiment is composed of a cantilever-shaped rotating base 127 and a rotating arm 128 provided at the tip of the rotating base 127, and a cam pin 48 is provided at the tip of the arm 128. This embodiment is different from the third embodiment in that the number of cam pins 48 is one. When the two cam pins 48 engage with one corrugated groove 51 as in Examples 1 and 2, the period of the corrugated groove 51 of the cylindrical cam 52 also needs to be an even number, but the cam pins Since the period is not restricted by setting the number of 48 to one, the shape of the corrugated groove 51 can be freely selected to have a period of one or more.

(Example 5) FIG. 12 shows Example 5 of the massage device according to the present invention. In this embodiment, the hollow cylindrical cylindrical cam 52 in which the corrugated groove 51 is recessed is used as the cam original section 45, and the pin frame 47 having the cam pin 48 that engages with the corrugated groove 51 is used as the cam follower section 46. There is. The pin frame 47 is composed of a ring-shaped reciprocating base 129 and a pair of reciprocating arms 130, and cam pins 48 are provided at the tips of the arms 130, respectively. The interlocking seat 69 is provided on the reciprocating base 129. In this way, the configuration of the cam original clause 45 and the cam slave clause 46 may be reversed.

(Example 6) FIG. 13 shows Example 6 of the massage device according to the present invention. The pin frame 47 of this embodiment is composed of a cantilever-shaped reciprocating base 129 and a reciprocating arm 130 provided at the tip of the reciprocating base 129, and a cam pin 48 is provided at the tip of the arm 130. In this embodiment, the point that the cam pin 48 is one and the point that the motor 36 is arranged on the rear side of the cylindrical cam 52 are different from the fifth embodiment. In this way, even if the configurations of the cam original node 45 and the cam slave node 46 are reversed, the period is not restricted by using one cam pin 48, so that the shape of the corrugated groove 51 has a period of one or more. You can freely choose the shape.

(Example 7) FIG. 14 shows Example 7 of the massage device according to the present invention. The basic structure of this embodiment is the same as that of the previous embodiment 5, except that the corrugated groove 51 is provided for each cam pin 48. In this way, even when the corrugated groove 51 corresponding to each cam pin 48 is formed, the limitation of the period of the corrugated groove 51 can be eliminated. Further, it is not necessary to arrange the motor 36 so as to overlap the cam original section 45 and the cam follower section 46 as in the present embodiment.

According to the massage device 1 of the first to seventh embodiments, the motor 36 is installed in a direction in which the axis of the output shaft 38 coincides with the movement direction of the cam slave node 46, and the cam original node 45 is connected to the output shaft 38. Therefore, the axial direction of the motor 36 is aligned with the direction orthogonal to the mounting wall 34 of the head case 5 (casing 2), and the motor 36 increases the radial dimension of the head case 5 in the front view. Can be suppressed. Further, either one of the pin frame 47 having the cam pin 48 or the cylindrical cam 52 in which the corrugated groove 51 engaging with the cam pin 48 is recessed constitutes the cam original section 45, and the remaining one constitutes the cam slave section 46. Therefore, by changing the shape of the corrugated groove 51 of the cylindrical cam 52, various reciprocating motions can be realized, and a massage stimulus with various amplitudes can be applied with a simple structure.

In each of the above embodiments, the cam pin 48 is formed to protrude inward from the pin frame 47, and the corrugated groove 51 is formed to be recessed on the outer peripheral surface of the hollow cylindrical cylindrical cam 52, but the cam pin 48 is formed to be outward from the pin frame 47. The corrugated groove 51 can be formed as a recess on the inner peripheral surface of the hollow cylindrical cylindrical cam 52.

(Example 8) FIGS. 15 to 18 show Example 8 of the massage device according to the present invention. As shown in FIG. 15, the massage device 1 of this embodiment is also incorporated in the shower head.

The entire massage body 3 is elastically deformable and is integrally formed of a translucent material. As shown in FIGS. 15 and 16, an elastic base 12 made of a ring-shaped disk, a group of protrusions 13 formed to project forward (outward) from the front surface (outer surface) of the elastic base 12, and the elastic base 12 are formed. A connecting body 14 provided behind the 12 and a circular outer peripheral wall 16 extending rearward from the outer peripheral edge of the elastic base 12 are provided. The group of protrusions 13 are formed at equal intervals on the triple concentric circles of the elastic base 12, and the elastic base 12 and the group of protrusions 13 are brush-shaped. The longer the protrusion 13 is arranged on the outer peripheral side, the larger the length dimension is set. The connecting body 14 is formed in a continuous bottomed tubular shape on the inner peripheral edge of the elastic base 12, and a screw through hole 133 is provided in the bottom wall 132 thereof. The outer peripheral wall 16 is formed in a hollow cylindrical shape having a multi-stage cross section.

As shown in FIGS. 15 and 16, the head case 5 is detachably attached to the front of the main case 134, which occupies most of the head case 5, the rear cover 135 attached to the rear of the main case 134, and the front of the main case 134. It is provided with a front cover 136 attached to the. The main case 134 includes a cylindrical peripheral wall 137, a partition wall 138 provided in an internal space surrounded by the peripheral wall 137, and a grip base 139 provided on the lower surface of the peripheral wall 137 to which the grip 6 is connected. The partition wall 138 is continuously provided with a first ring wall 140 continuous with the inner surface of the peripheral wall 137, a cylinder wall 141 connected forward from the inner peripheral edge of the first ring wall 140, and a cylinder wall 141 connected inward from the inner surface of the front end of the cylinder wall 141. It is provided with a second ring wall 142 to be formed.

The rear cover 135 is formed in a dish shape that bulges rearward, and is fixed so as to close the rear opening of the peripheral wall 137. The front cover 136 includes a cover wall 145 having a mounting opening 33 and an edge peripheral wall 146 extending rearward from the outer peripheral edge of the cover wall 145, and the cover wall 145 serves as a mounting wall 34 for the massage body 3. It is configured. In this embodiment, the secondary battery 109 that supplies electric power to the motor 36 is fixed inside the head case 5.

As shown in FIGS. 16 and 17, the drive structure 4 reciprocates between the DC motor (rotational drive source) 36 driven by the electric power supplied from the secondary battery 109 and the rotational motion of the output shaft 38 of the motor 36. It is provided with a motion conversion mechanism 39 composed of a cam mechanism including a cam original node 45 and a cam follower segment 46 that convert the motion into motion. The motor 36 is integrally provided with a speed reducer, and is sandwiched and fixed by

support ribs

147 and 148 provided on the support frame 164 and the first ring wall 140, which will be described later, and the rear cover 135, respectively. The output shaft 38 of the motor 36 is arranged in a direction along the vertical direction, and the axial direction of the output shaft 38 and the movement direction of the cam follower 46 are orthogonal to each other.

The cam original section 45 is composed of an eccentric cam 152 having a cam surface 151 on the peripheral surface, and the cam slave section 46 is a driven body 154 having a cam receiving surface 153 in contact with the cam surface 151 of the eccentric cam 152. It includes a compression coil type urging spring (urging body) 155 that urges the driven body 154 toward the eccentric cam 152. As shown in FIG. 17, the eccentric cam 152 is a pair composed of a first arc portion 156 and a second arc portion 157 having different curvatures arranged at a predetermined distance and a common tangent line of both

arc portions

156 and 157. It is formed in a teardrop shape in a plan view having a cam surface 151 composed of a straight portion 158 of the above. The curvature of the first arc portion 156 is set to be larger than that of the second arc portion 157. The output shaft 38 of the motor 36 is arranged closer to the first arc portion 156 than the center in the major axis direction of the teardrop shape (the direction connecting the arc centers of the first arc portion 156 and the second arc portion 157). ..

The driven body 154 includes a contact plate 161 having a cam receiving surface 153 on the upper surface, a bottomed cylindrical interlocking cylinder 162 provided on the front side of the contact plate 161 and a pair provided on the rear side upper and lower sides of the contact plate 161. It is equipped with a regulation plate 163. The regulating plate 163 regulates the driven body 154 from rotating around the front-rear axis by coming into contact with the eccentric cam 152. In the driven body 154, the interlocking cylinder 162 is slidably supported in the front-rear direction by the support frame 164, and the support frame 164 is supported by the support cylinder 165 for slidingly guiding the interlocking cylinder 162 and the front end outer surface of the support cylinder 165. A disk-shaped frame wall 166 that is continuous outward, a frame peripheral wall 167 that is continuous forward from the outer peripheral edge of the frame wall 166, and a ring-shaped frame seat 168 that is continuous outward from the front end outer surface of the frame peripheral wall 167. It has. The frame seat 168 of the support frame 164 is fastened and fixed to the partition wall 138 with screws (not shown). The urging spring 155 is interposed between the contact plate 161 and the frame wall 166.

The interlocking body 65 includes a straight rod-shaped interlocking rod 171 and a bottomed cylindrical connecting cup 172 provided at the front end of the interlocking rod 171 and receiving the connecting body 14, and the interlocking rod 171 is the interlocking body 65. It is fastened and fixed to the interlocking cylinder 162 of the above with a screw 173. A diaphragm 76 that divides the inside of the head case 5 (casing 2) into a first region 74 and a second region 75 is fixed between the partition wall 138 of the main case 134 and the support frame 164. The outer peripheral edge portion of the diaphragm 76 is sandwiched and fixed to the front and back by the second ring wall 142 and the frame seat 168. A through seat 78 having through holes 77 penetrating the front and back is provided in the central portion of the diaphragm 76. The connection cup 172 of the interlocking body 65 is located in the first region 74 through the through hole 77. A large-diameter shaft portion 81 having a large shaft diameter is formed in the middle portion of the interlocking rod 171 of the interlocking body 65, and a large-diameter hole portion 82 having a large hole diameter is formed in the through hole 77 of the through seat 78. ing. In the interlocking rod 171 penetrating the through seat 78, the large diameter shaft portion 81 is engaged with the large diameter hole portion 82. As a result, the interlocking body 65 penetrates the diaphragm 76 in a watertight manner and is fixed to the diaphragm 76 at the penetrating portion. When the interlocking body 65 is reciprocated, the diaphragm 76 in the unfixed portion is elastically deformed together with the interlocking body 65 in the front-rear direction, and a bellows-like movement occurs.

As shown in FIG. 16, the head case 5 (casing 2) is provided with a water supply port 85, and water from an external water source is supplied to the water supply port 85 via the grip 2. The water supply port 85 communicates with the first region 74. The cover wall 145 (mounting wall 34) facing the first region 74 is provided with a group of spouts 86 for discharging the water supplied to the water supply port 85. In the first region 74, a water passage 87 from the water supply port 85 to the group of water discharge ports 86 is formed. Specifically, in a state where the massage body 3 is attached to the head case 5, an annular water passage 87 is defined by the peripheral wall 137, the partition wall 138, and the cover wall 145.

To attach the massage body 3, first cover the tube wall 141 with the massage body 3 from the front side from the state shown in FIG. 18, then attach the front cover 136 to the peripheral wall 137, and connect the bottom wall 132 of the connecting body 14 to the interlocking body 65. The massage body 3 is fixed to the head case 5 by fastening and fixing to the cup 172 with screws 174. Specifically, the front cover 136 is detachably configured with respect to the peripheral wall 137 with a screw structure consisting of male and female threaded

portions

175 and 176, and the female threaded portion 175 is engraved on the inner surface of the peripheral peripheral wall 146. A male screw portion 176 is engraved on the front outer edge of the peripheral wall 137. When the male threaded portion 176 of the peripheral wall 137 and the female threaded portion 175 of the peripheral wall 146 are screwed together, the rear end of the outer peripheral wall 16 of the massage body 3 is sandwiched and held between the front end of the tubular wall 141 and the rear end of the mounting opening 33. NS. The connecting body 14 is integrated with the interlocking body 65 by screwing the screw 174 into the interlocking body 65 through the screw through hole 133 provided in the bottom wall 132. When the massage body 3 is separated from the head case 5 for cleaning or the like, it can be easily removed by releasing the screwed structure of the front cover 136 and the screw 174.

In FIG. 16, reference numeral 105 is a seal ring, which seals between the peripheral wall 137 and the peripheral wall 146. Further, the space between the cover wall 145 and the cylinder wall 141 is sealed by the outer peripheral wall 16 of the massage body 3. With these seal structures, the water passage 87 is configured as a watertight water channel, and the water in the water channel 87 does not leak to the first region 74 excluding the water channel 87.

The changeover switch 8 is arranged inside the head case 5 and can be operated via the rear cover 135. The changeover switch 8 is mounted on the control board 123. In the second region 75 surrounded by the frame wall 166, the frame peripheral wall 167, and the diaphragm 76, four illumination light sources 125 composed of full-color chip LEDs mounted on the ring-shaped illumination substrate 124 are provided (FIG. 6). 18). The light of the illumination light source 125 is transmitted to the outside through the translucent diaphragm 76 and the massage body 3, displays the driving state (low speed or high speed) of the driving structure 4, and illuminates the water discharge direction. In addition, the lighting state and the emission color can be variously changed to function as illumination, and the taste and design of the massage device 1 can be improved.

When applying a massage stimulus to the surface of the human body with the massage device 1, the changeover switch 8 is operated to drive the drive structure 4. When the motor 36 is driven at a low speed or a high speed, the eccentric cam 152 is rotationally driven, and the driven body 154 that receives the cam surface 151 of the eccentric cam 152 at the cam receiving surface 153 is the output shaft 38 of the motor 36. It is reciprocated in the direction (front-back direction) orthogonal to the axial direction (vertical direction). The movement of the driven body 154 is transmitted to the massage body 3 via the interlocking body 65, and the elastic base 12 is elastically deformed in the front-rear direction. Along with this, each protrusion 13 is expanded and contracted in the radial direction in the front view, and a massage stimulus is applied to the surface of the human body.

In this embodiment, the driven body 154 reciprocates twice each time the motor 36 makes one rotation. The amplitude and period when the driven body 154 is reciprocated on the cam surface 151 from one straight line portion 158 to the other straight line portion 158 via the first arc portion 156 is the amplitude and period of one straight line portion via the second arc portion 157. The amplitude and period when the driven body 154 is reciprocated on the cam surface 151 from 158 to the other straight portion 158 are set to be smaller. The eccentric cam 152 may be provided with three or more arc portions, or may be formed in a circular or elliptical shape.

In the massage device 1 of the eighth embodiment, the motor 36 is installed in the direction in which the axis of the output shaft 38 is orthogonal to the moving direction of the cam slave node 46, and the cam original node 45 is connected to the output shaft 38. By aligning the axial direction of the 36 with the direction parallel to the mounting wall 34 of the head case 5 (casing 2), it is possible to prevent the motor 36 from increasing the dimension of the casing 2 in the depth direction in the front view. Further, the cam original section 45 is composed of an eccentric cam 152 having a cam surface 151 on the peripheral surface, and the cam slave section 46 is a driven body 154 having a cam receiving surface 153 in contact with the cam surface 151 of the eccentric cam 152. And the driven body 154 is configured to include an urging spring 155 that urges the driven body 154 toward the eccentric cam 152. Therefore, by changing the shape of the cam surface 151 of the eccentric cam 152, various reciprocating motions can be performed. It can be realized, and a massage stimulus with various amplitudes can be applied with a simple structure.

(Example 9) FIG. 19 shows Example 9 of the massage device according to the present invention. In this embodiment, the drive structure 4 is different from that of the eighth embodiment. In this embodiment, the cam 180 has an end face cam 180 having a cam surface 151 on one end surface (front end) of the cylinder, with the axial direction of the output shaft 38 of the motor 36 as the vertical direction corresponding to the movement direction of the cam follower 46. It differs from Example 8 in that 45 is configured and that the cam receiving surface 153 of the driven body 154 is hemispherical. The cam receiving surface 153 is provided at the rear end of the interlocking shaft 181 formed on the rear surface of the interlocking cylinder 162. The cam surface 151 is formed of a slope that intersects the axial direction of the output shaft 38, and each time the motor 36 makes one rotation, the driven body 154 reciprocates once. The cam receiving surface 153 may be a wavy surface that undulates in the circumferential direction, and the driven body 154 may be reciprocated a plurality of times each time the motor 36 makes one rotation. Further, the cam original section 45 may be an end face cam 180 having a cam surface on one end surface of the cylinder.

In the massage device 1 of the ninth embodiment, the motor 36 is installed in a direction in which the axis of the output shaft 38 coincides with the movement direction of the cam follower 46, and the cam original section 45 is connected to the output shaft 38. By aligning the axial direction of the 36 with the direction orthogonal to the mounting wall 34 of the head case 5 (casing 2), it is possible to prevent the motor 36 from increasing the radial dimension of the casing 2 in the front view. Further, the cam original section 45 is composed of an end face cam 180 having a circular cam surface 151 on the end face, and the cam slave section 46 is a driven body 154 having a cam receiving surface 153 in contact with the cam surface 151 of the end face cam 180. And the driven body 154 is configured to include an urging spring 155 that urges the end face cam 180, so that various reciprocating motions can be realized by changing the shape of the cam surface 151 of the end face cam 180. With a simple structure, it is possible to give a massage stimulus with various amplitudes.

As described above, in the massage device 1 of each of the above embodiments, the motion conversion mechanism 39 of the drive structure 4 is rotationally driven by the motor 36 and the cam original section 45, and the cam that is reciprocally driven by the cam original section 45. Since it is composed of a cam mechanism provided with a follow-up section 46, it is possible to increase the number of reciprocating reciprocating drives per rotation of the motor 36 as compared with the crank mechanism applied to the conventional massage device, and further one reciprocating movement. Each amplitude can be different. Further, since the cam mechanism does not have a rotating sliding portion due to the shaft and the bearing, it is possible to suppress rattling of the mechanism portion due to wear. As described above, according to the massage device 1 of each of the above embodiments, it is possible to apply a massage stimulus having a change in amplitude while operating the massage body 3 with a relatively simple drive structure 4 called a cam mechanism. It is possible to maintain a good operating condition for a long period of time.

In each of the above embodiments, the massage device 1 is incorporated in the shower head, but the present invention is not limited to this, and the massage device 1 can be configured as a dedicated massage device. Further, the structure of the massage body 3 is not limited to the one in which the brush-like one having the protrusion 13 is expanded or contracted in the front view in conjunction with the front-rear drive of the cam follower 46.

As another embodiment of the massage body 3, it can be composed of a block body such as a sphere or a prism formed of rubber or the like. In this case, the massage body 3 that is reciprocally driven in the front-rear direction by the drive structure 4 can give a continuous pressing stimulus to the surface of the human body. One block body or a plurality of block bodies can be operated by each of the one interlocking bodies 65, or one block body can be operated by a plurality of interlocking bodies 65, and a plurality of protrusions can be operated on the surface of the block body. May be provided. Further, as yet another embodiment of the massage body 3, it can be composed of a plate-shaped body. In this case, the plate-shaped body is pivotally supported by a shaft body arranged so that the axis center intersects the reciprocating direction of the cam follower 46, and the interlocking body 65 is connected to one end side of the plate-shaped body. As a result, the plate-shaped body is swung in the seesaw in the front-rear direction by the drive structure 4, so that a continuous rotational pressing stimulus can be applied to the surface of the human body. Similar to the above, a plurality of protrusions may be provided on the contact surface of the plate-shaped body.

As in the above embodiment, the configuration of the massage body 3 can be changed to various forms as long as it does not deviate from the content of the invention. Further, since the cam follower 46 is guided so as to be movable only in the front-rear direction, in each of the above embodiments and embodiments, the interlocking body 65 may be omitted to directly connect the cam follower 46 and the massage body 3. can.

1 Massage device 2 Casing 3 Massage body 4 Drive structure 12 Elastic base 13 Protrusion 14 Connecting body 34 Mounting wall 36 Rotational drive source (motor)
38 Output shaft 39 Motion conversion mechanism 45 Cam original section 46 Cam follower section 47 Pin frame 48 Cam pin 51 Corrugated groove 52 Cylindrical cam 65 Interlocking body 74 First area 75 Second area 76 Diaphragm 85 Water supply port 86 Water discharge port 87 Water passage 151 Cam Surface 152 Eccentric cam 153 Cam receiving surface 154 Driven body 155 Biasing body (urging spring)
180 End face cam

Claims

A casing (2), a massage body (3) arranged on the mounting wall (34) of the casing (2) and pressed against the surface of the human body, and a massage body (3) arranged inside the casing (2). It is equipped with a drive structure (4) that reciprocates the
The drive structure (4) includes a rotary drive source (36) and a motion conversion mechanism (39) that converts the rotary motion of the rotary drive source (36) into a reciprocating motion.
A cam mechanism in which the motion conversion mechanism (39) includes a cam original node (45) that is rotationally driven by a rotational drive source (36) and a cam follower (46) that is reciprocally driven by the cam original node (45). A massage device characterized by being composed of.
The rotation drive source (36) is installed in a direction in which the axis of the output shaft (38) of the rotation drive source (36) is orthogonal to the movement direction of the cam follower (46), and the output of the rotation drive source (36). The cam original section (45) is connected to the shaft (38),
The cam original section (45) is composed of an eccentric cam (152) having a cam surface (151) on the peripheral surface, and the cam follower section (46) is in contact with the cam surface (151) of the eccentric cam (152). A claim including a driven body (154) having a cam receiving surface (153) and an urging body (155) for urging the driven body (154) toward an eccentric cam (152). Item 1. The massage device according to item 1.
The rotation drive source (36) is installed in a direction in which the axis of the output shaft (38) of the rotation drive source (36) coincides with the movement direction of the cam follower (46), and the output of the rotation drive source (36). The cam original section (45) is connected to the shaft (38),
The cam original section (45) is composed of an end face cam (180) having a circular cam surface (151) on the end face, and the cam follower (46) is in contact with the cam surface (151) of the end face cam (180). A claim that includes a driven body (154) having a cam receiving surface (153) and an urging body (155) that urges the driven body (154) toward an end face cam (180). The massage device according to 1.
The rotation drive source (36) is installed in a direction in which the axis of the output shaft (38) of the rotation drive source (36) coincides with the movement direction of the cam follower (46), and the output of the rotation drive source (36). The cam original section (45) is connected to the shaft (38),
The cam original section (45) is configured on either the pin frame (47) having the cam pin (48) or the cylindrical cam (52) in which the corrugated groove (51) engaging with the cam pin (48) is recessed. The massage device according to claim 1, wherein the cam follower (46) is configured on the other side.
The cylindrical cam (52) is formed in a hollow cylindrical shape.
The cylindrical cam (52) is arranged so as to cover the rotation drive source (36), and the cam pin (48) and the corrugated groove (51) are arranged in the axial direction of the output shaft (38). The massage device according to claim 4, which is arranged so as to be within the length, dimension, and width of the above.
The massage device according to claim 4 or 5, wherein the cam follower (46) is composed of a hollow cylindrical cylindrical cam (52).
The massage body (3) has a disk-shaped elastic base (12) that is supported by the casing (2) and can be elastically deformed in the thickness direction, and is formed so as to project outward from the outer surface of the elastic base (12) on the surface of the human body. It comprises a group of protrusions (13) to be pressed and a coupling body (14) formed inwardly protruding from the inner surface of the elastic base (12) and connected to a cam casing (46).
The massage device according to any one of claims 1 to 6, wherein the cam follower (46) and the connecting body (14) are interlocked via the interlocking body (65).
The inside of the casing (2) is an elastically deformable diaphragm (76) fixed to the casing (2), and a first region (74) facing the mounting wall (34) on which the massage body (3) is arranged. , It is partitioned into a second area (75) where the drive structure (4) is arranged.
The massage device according to claim 7, wherein the interlocking body (65) penetrates the diaphragm (76) in a watertight manner and is fixed to the diaphragm (76) at the penetrating portion.
A water supply port (85) to which water is supplied from an external water source is provided in the first region (74) of the casing (2).
A group of spouts (86) that discharge water supplied from the water supply port (85) through the first region (74) to the mounting wall (34) of the casing (2) in which the massage body (3) is arranged. The massage device according to claim 8, wherein the massage device is provided.
The massage device according to claim 9, wherein a water passage (87) from a water supply port (85) to a group of water discharge ports (86) is formed in a first region (74) while being separated from a diaphragm (76). ..
The massage device according to claim 9 or 10, wherein a group of spouts (86) is formed on a mounting wall (34) facing the outer peripheral edge of the elastic base (12) of the massage body (3).
The elastic base (12) of the massage body (3) is formed in a ring shape.
The massage device according to claim 9 or 10, wherein a group of spouts (86) are formed on a mounting wall (34) surrounded by an elastic base (12).
The elastic base (12) of the massage body (3) is formed in a ring shape.
A group of spouts (86) are formed on the mounting wall (34) facing the outer peripheral edge of the elastic base (12) of the massage body (3) and the mounting wall (34) surrounded by the elastic base (12), respectively. The massage device according to claim 9 or 10.