HK1171362B - Massage chair - Google Patents

Description

Chair type massage machine

Technical Field

The present invention relates to a chair-type massage machine.

Background

As a chair-type massage machine, for example, there is a chair-type massage machine disclosed in patent document 1. The chair-type massage machine is provided with a backrest part at the rear part of a seat part and a leg kneading device at the front part of the seat part. The backrest portion is provided with a massage mechanism for massaging the back of the user, and the leg massage device is provided with a lower limb massage mechanism for massaging the lower limbs of the user. The backrest of the chair-type massage machine disclosed in patent document 1 can be reclined back and forth, and the leg-rubbing device is swingably provided in front of the seat via a support member.

Since such a chair-type massage machine has a reclining function in the backrest portion, it is sometimes used in a state where the backrest portion is tilted backward.

Patent document 1: japanese laid-open patent publication No. 2005-160866

In the chair-type massage machine as described above, when the backrest portion is reclined rearward, the upper end portion of the backrest portion protrudes rearward more than the seat portion (see fig. 1 of patent document 1). Therefore, a large space is required between the chair-type massage machine and the indoor wall surface, and it may be difficult to install the chair-type massage machine with the back facing the vicinity of the wall surface. In other words, when the conventional chair-type massage machine is installed, it needs to be disposed apart from the indoor wall surface, and as a result, the chair-type massage machine needs a large installation space.

Disclosure of Invention

In view of the above problems, it is a first object of the present invention to provide a chair-type massage machine having a reclining function in a backrest portion, which can be installed close to a wall surface when the back is installed near the wall surface in a room, and which can reduce the space occupied when installed.

However, in the chair-type massage machine as described above, the applicant of the present application has already developed a structure including a mechanism for performing a movement for reclining the backrest portion rearward and moving the seat portion forward and upward (japanese patent application 2011-33644). In the case of this mechanism, if the seat portion is advanced while the front end portion thereof is raised and the backrest portion is fallen backward, the height of the head and the height of the waist of the user sitting on the seat portion are close to the height of the heart. This makes it difficult for blood to collect in the tip portions of the lower limbs of the user, and has advantages such as a massage effect and fatigue recovery.

However, if the seat section is moved forward and backward or up and down in this way, the relative position between the seat section and the leg massage apparatus changes with the movement of the seat section, and it is expected that the leg massage apparatus is inconvenient to use when the seat section is moved forward and backward.

In view of the above problems, the present invention has been made, and an object of the present invention is to provide a chair-type massage machine which can easily use a leg massage device provided at a front portion of a seat without being affected by movement of the seat when the seat is moved back and forth or up and down in the chair-type massage machine.

In order to achieve the above object 1, the present invention adopts the following means.

That is, the chair-type massage machine according to the present invention is a chair-type massage machine including a seat portion, a base frame supporting the seat portion on a floor, a backrest portion provided to be capable of reclining on a rear portion of the seat portion, and a massage portion configured to perform a massage operation on a user seated on the seat portion, and is characterized in that an upper end portion of the backrest portion moves up and down along a single vertical line during a reclining operation of the backrest portion.

Preferably, the backrest portion may have the following structure: in the rearward reclining operation, the lower end portion of the backrest portion moves forward and the upper end portion moves downward, and in the forward reclining operation, the lower end portion of the backrest portion moves rearward and the upper end portion moves upward.

Preferably, the seat portion may be movable forward and backward with respect to the base frame; the seat section is configured to be moved back and forth in conjunction with the back and forth movement of the lower end section of the backrest section accompanying the reclining operation.

Preferably, the seat section is configured to perform a front raising operation of raising a front end of the seat section in conjunction with the front movement and a front lowering operation of lowering the front end of the seat section in conjunction with the rear movement.

Preferably, in order to move the upper end portion of the backrest portion up and down along a single vertical line during reclining, the backrest portion may be provided with a rail member in a direction connecting the lower end portion and the upper end portion thereof, and the base frame may be provided with a slide holding portion for movably holding the rail member of the backrest portion in the longitudinal direction thereof, and a rotation support portion for rotatably holding the slide holding portion about a left-right axis.

Preferably, the base frame is provided with a guide portion for guiding the seat portion to be movable in the front-rear direction and an advancing-retreating drive portion for moving the seat portion in the front-rear direction, in order to interlock the front-rear movement of the seat portion with the front-rear movement of the lower end portion of the backrest portion accompanying the reclining operation, the rear end portion of the seat portion and the lower end portion of the backrest portion being swingably connected about an axis in the left-right direction.

Preferably, the guide portion of the base frame may be inclined upward in a front direction.

Preferably, a leg massage device for massaging the lower limbs of the user may be provided at a front portion of the seat section.

Preferably, the backrest portion is configured to be tilted forward, and an engagement mechanism for engaging a lower end portion of the backrest portion with a rear end portion of the seat portion is provided to hold the backrest portion in the standing state.

In order to achieve the above object 2, the present invention adopts the following means.

That is, the chair-type massage machine according to the present invention is a chair-type massage machine including a seat portion, a base frame for supporting the seat portion on a floor, and a leg-rubbing device provided at a front portion of the seat portion, wherein a seat portion moving mechanism for moving the seat portion at least in a front-rear direction is provided at the base frame; the seat section is provided with a posture changing mechanism which maintains the relative distance between the seat section and the leg massage device and can change the posture of the leg massage device relative to the seat section.

Preferably, the seat moving mechanism is configured to perform a forward raising operation for raising a front end of the seat when the seat moves forward and a forward lowering operation for lowering the front end of the seat when the seat moves backward; the posture changing mechanism is configured to change the posture of the leg massage device with respect to the seat while maintaining the relative distance between the seat and the leg massage device when the seat is moved upward in front of the seat.

Preferably, the seat moving mechanism may include a guide portion provided on the base frame and guiding the seat to be movable in the front-rear direction, and an advancing-retreating driving portion for moving the seat in the front-rear direction; the posture changing mechanism includes a swing arm connecting a base fulcrum provided on the seat and supporting the swing about the axis in the lateral direction and a front fulcrum provided in the leg massage device and supporting the swing about the axis in the lateral direction.

Preferably, the posture changing mechanism includes a lower arm member including a front protrusion extending downward from a base fulcrum of the seat and having a front end bent forward, and a telescopic rod portion provided to be slidable forward with respect to the front protrusion; the front end of the telescopic rod part of the lower arm component is connected with the leg kneading device in a manner of freely swinging around the axle center in the left-right direction.

Preferably, the swing arm of the posture changing mechanism includes a front protrusion extending downward from a base fulcrum of the seat and having a front end bent forward, and a telescopic portion provided slidably forward with respect to the front protrusion; the telescopic part of the swing arm and the leg kneading device are connected to each other so as to be swingable about a horizontal axis.

Preferably, the posture changing mechanism may include an intermediate link connected to a reverse pivot provided at each of left and right side portions of the leg massage device and supporting the swing about the axis in the left-right direction, so that the massage surface of the leg massage device can be reversed between a state of facing upward and a state of facing the floor; a front end portion of the swing arm and one end portion of the intermediate link are connected to each other so as to be swingable about a left-right axis; the telescopic rod portion of the lower arm member is connected to the other end portion of the intermediate link so as to be swingable about a left-right axis. In other words, the following structure may be adopted: the posture changing mechanism has an intermediate link having one end portion connected to a front end portion of the swing arm so as to be swingable about a left-right axis and the other end portion connected to a telescopic lever portion of the lower arm member so as to be swingable about a left-right axis, and an intermediate portion of the intermediate link is connected to a reverse pivot provided on left and right side portions of the leg massage device and supporting the swing about the left-right axis so that the massage surface of the leg massage device can be reversed between an upward facing state and a ground facing state.

Preferably, the posture changing mechanism is configured to be able to store the leg massage apparatus in a storage position formed below the seat section.

Preferably, a backrest portion is provided at a rear portion of the seat portion so as to be capable of reclining, and an upper end portion of the backrest portion is configured to move up and down along a single vertical line during reclining operation of the backrest portion; the backrest part has the following structure: in the rearward reclining operation, the lower end portion of the backrest portion moves forward and the upper end portion moves downward, and in the forward reclining operation, the lower end portion of the backrest portion moves rearward and the upper end portion moves upward.

According to the chair-type massage machine according to the present invention, when the back is installed near the wall surface in the room, the back can be disposed close to the wall surface, and thus the space occupied during installation can be reduced.

Further, according to the chair-type massage machine according to the present invention, when the seat portion is configured to be movable forward and backward or up and down, the leg massage device provided at the front portion of the seat portion can be used without being affected by the movement of the seat portion.

Drawings

Fig. 1 is a perspective view showing a chair-type massage machine 1 according to the present invention.

Fig. 2 is a perspective view showing a chair-type massage machine 1 according to the present invention from below (back side).

Fig. 3 is a side view of the chair-type massage machine according to embodiment 1 showing a state in which the backrest is upright and the leg massage device is stored.

Fig. 4 is a side view of the chair-type massage machine according to embodiment 1 showing a state in which the backrest portion is reclined backward and the leg massage apparatus is stored.

Fig. 5 is a side view of the chair-type massage machine according to embodiment 1 showing a state in which the backrest portion is reclined backward and the leg massage apparatus is moved to protrude forward.

Fig. 6 is a side view of the chair-type massage machine according to embodiment 1 showing a state in which the backrest is erected and the leg massage device is moved to protrude forward.

Fig. 7 is a perspective view showing a chair-type massage machine according to embodiment 2 of the present invention.

Fig. 8 is a perspective view showing the chair-type massage machine according to embodiment 2 of the present invention from below (back side).

Fig. 9 is a side view of the chair-type massage machine according to embodiment 2 showing a state in which the backrest is upright and the leg massage device is stored.

Fig. 10 is a side view of the chair-type massage machine according to embodiment 2 showing a state in which the backrest portion is reclined backward and the leg massage apparatus is stored.

Fig. 11 is a side view of the 2 nd embodiment of the chair-type massage machine showing a state in which the backrest portion is reclined backward and the leg massage apparatus is moved to protrude forward.

Fig. 12 is a side view of the 2 nd embodiment of the chair-type massage machine showing a state in which the backrest portion is reclined backward and the back surface is directed upward while the leg massage apparatus is moved to protrude forward.

Fig. 13 is a side view of the chair-type massage machine according to embodiment 2 showing a state in which the backrest is erected and the leg massage device is moved to project forward.

Fig. 14 is a side view of the chair-type massage machine according to embodiment 2, showing a state in which the backrest is upright and the back surface is directed upward while the leg massage apparatus is moved to protrude forward.

Fig. 15 is a perspective view showing a chair-type massage machine according to embodiment 3 of the present invention (with the backrest portion in an upright state).

Fig. 16 is a side view of the chair-type massage machine according to embodiment 3 showing a state in which the backrest is upright and the leg massage device is stored.

Fig. 17 is a side view of the 3 rd embodiment of the chair-type massage machine showing the backrest portion reclining rearward and the leg massage apparatus hanging down below the front portion of the seat portion (retracted position).

Fig. 18 is a side view of the 3 rd embodiment of the chair-type massage machine showing a state in which the backrest portion is reclined backward and the leg massage apparatus is moved to protrude forward.

Fig. 19 is a perspective view showing a chair-type massage machine according to embodiment 3 of the present invention (with the backrest portion in a forward-tilted state).

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[ embodiment 1 ]

Fig. 1 to 6 show a chair-type massage machine 1 according to the present invention.

In the drawings, a part of the structure is omitted and depicted for the sake of convenience of explanation. In the following description, the left-right direction in fig. 3 to 6 is referred to as the front-rear direction in an actual apparatus, and the up-down direction in fig. 3 to 6 is referred to as the up-down direction in an actual apparatus. The direction in which the paper surface of fig. 3 to 6 penetrates is referred to as the lateral direction or the width direction in the actual device. These directions coincide with those seen from a user seated in the chair-type massage machine 1.

First, the basic structure of the chair-type massage machine 1 will be described. The chair-type massage machine 1 includes a seat 2 (only a seat frame 2a is shown in fig. 3) and a backrest 3 (only a back frame 3a is shown in fig. 3) provided at the rear of the seat 2. Further, a leg massage device 5 for kneading and massaging the lower limbs (particularly, the calves) of the user seated on the seat section 2 is provided at the front portion of the seat section 2.

The seat 2 has a width sufficient to support the buttocks of the user from below. A base frame 6 for placing the chair-type massage machine 1 on the floor F is provided at the lower part of the seat 2, and the seat 2 is supported at a predetermined height by the base frame 6. The base frame 6 includes a lower frame 7 provided as a ground contact, an upper frame 8 provided above the lower frame 7 in accordance with the support height of the seat 2, and a column 6a connecting the upper and lower sides of the lower frame 7 and the upper frame 8, and forms a box-shaped frame.

In embodiment 1, the base frame 6 also has a function of forming a storage position P for storing the leg massage device 5 between the upper and lower sides of the lower frame 7 and the upper frame 8 (below the seat 2) (see fig. 3).

The backrest portion 3 is formed to have a width substantially equal to that of the seat portion 2, and a lower end portion thereof is connected to a rear end portion of the seat portion 2 via a swing portion 10 supported swingably about an axis in the left-right direction. Thus, the backrest 3 can freely swing (can recline) behind the seat 2 so that the upper end thereof is tilted backward or forward. The drive configuration for the reclining operation will be described later.

In the chair-type massage machine 1, the upper end portions of a pair of left and right hinge plate portions 11 provided in a state of protruding upward on both left and right sides of the seat frame 2a and the front end portions of a pair of left and right lever portions 12 provided so as to protrude forward by being bent forward at the lower end portion of the back frame 3a are connected by shaft portions having the axial centers in the left and right directions, respectively. The connecting portion is a pair of left and right swing portions 10. The rear end portion of the seat section 2 and the lower end portion of the backrest section 3 are connected to each other by the swing section 10 so as to be swingable about an axis in the left-right direction.

A massage unit 9 (see fig. 1) for performing a massage operation such as kneading, beating, or vibrating the back to waist of the user seated on the seat unit 2 is provided in the backrest unit 3 so as to be movable up and down. Further, massage units (not shown) for performing massage operations such as kneading, beating, or vibrating the waist, hip, or thigh of the user seated on the seat unit 2 may be provided inside the seat unit 2 and on both the left and right sides of the seat unit 2.

The leg massage device 5 is formed in a box shape having a substantially rectangular front view and a triangular side view with an arc. The front surface of the leg massage device 5 is a massage surface 5a, and a pair of left and right leg rest portions 13 into which the lower limbs (left and right legs) of the user can be fitted are formed.

A lower limb massage device (not shown) for kneading and massaging the lower limbs is incorporated in the inner facing surface of each leg rest 13. The lower limb massage apparatus may be configured to perform kneading by swinging a plate member long in the longitudinal direction of the leg in the left-right direction, or configured to perform kneading by an air bag inflated and deflated by supplying and discharging air.

As shown in fig. 2, in the leg massage device 5, a pair of right and left wheels 14 are rotatably provided at the corner portions of the bottom surface and the back surface so as to be capable of rolling in the front-rear direction.

In this way, the seat 2 of the chair-type massage machine 1 including the seat 2, the backrest 3, and the leg massage device 5 can move forward and backward with respect to the base frame 6, the backrest 3 can recline in conjunction with the forward and backward movement of the seat 2, and further, the leg massage device 5 can perform various posture changes. A seat moving mechanism 15 for moving the seat 2 forward and backward and interlocking the forward and backward movement of the seat 2 with the reclining operation of the backrest 3, and a posture changing mechanism 16 for changing the posture of the leg massage apparatus 5.

Next, the seat moving mechanism 15 will be explained.

The seat moving mechanism 15 includes a guide unit 20 that guides the seat 2 to be movable in the front-rear direction, and an advancing/retreating drive unit 21 that moves (drives) the seat 2 in the front-rear direction along the guide unit 20.

The guide portion 20 is constituted by the upper frame 8 of the base frame 6. That is, the upper frame 8 is formed with a pair of left and right side members 24 whose longitudinal direction is oriented in the front-rear direction so as to extend along both left and right side portions of the seat frame 2a, and a front member 25 that connects front end portions of the left and right side members 24 to each other. The left and right side members 24 are provided at positions that extend outward in the left-right direction from the width dimension (outer dimension in the left-right direction) of the seat frame 2 a. The side members 24 and the front member 25 are formed by a square pipe or the like having a hollow square cross section.

On the other hand, a pair of right and left extension members 27 are provided on the seat frame 2a so as to extend obliquely downward in the right-left direction from the outer surfaces of the right and left side portions. The left and right extension members 27 are provided with side members 24 fitted to the base frame 6, and sliding portions 28 that are slidable in the longitudinal direction (i.e., the front-rear direction) of the side members 24.

In this way, the left and right side members 24 of the upper frame 8 provided on the base frame 6 are configured to slidably hold the left and right sliding portions 28 provided on the seat frame 2a in the front-rear direction, thereby configuring the guide portion 20. Further, since the side member 24 is formed of a square pipe or the like, the sliding portion 28 can slide stably by receiving a rotation preventing action and a play preventing action about the longitudinal direction (sliding axis) of the side member 24.

The guide portion 20 (the left and right side members 24) may be provided parallel to (horizontal to) the floor surface F, or may be provided inclined in the forward rising direction so as to rise the front end of the seat 2. When the inclination is in the forward ascending direction, the inclination may be straight or may be upward while drawing a curved concave curve.

In embodiment 1, the side member 24 is linearly and gently inclined (at a small inclination angle) in the forward rising direction. Therefore, the seat moving mechanism 15 performs a "forward raising operation" in which the front end of the seat 2 rises as the seat 2 moves forward when the seat 2 moves forward, and conversely performs a "forward lowering operation" in which the front end of the seat 2 falls as the seat 2 moves backward when the seat 2 moves backward.

An advancing/retreating drive unit 21 is provided to move (drive) the seat unit 2 in the front-rear direction with respect to the guide unit 20. The advancing/retreating drive unit 21 may be, for example, an electric feed screw mechanism. As is clear from fig. 2 and 5, in the electric feed screw mechanism, a feed screw shaft 31 rotationally driven by an electric motor 30 is attached to the lower frame 7 of the base frame 6 in a state of protruding forward, and a nut member 32 screwed to the feed screw shaft 31 is held in a state of being unrotatable around the feed screw shaft 31 at the rear end of the seat frame 2 a.

A tail frame 35 formed in a crank shape by bending downward and then bending rearward is provided at the rear end of the seat frame 2a, and the nut member 32 is held by a rear member 36 connecting the rear ends of the left and right tail frames 35. The feed screw shaft 31 is inclined in the forward upward direction, but this is a structure for making the forward and backward movement direction of the nut member 32 inclined in parallel to the forward upward direction of the side member 24 of the base frame 6, that is, the guide portion 20 for guiding the forward and backward movement of the seat 2.

As is clear from this, if the forward/backward driving unit 21 is operated (the nut member 32 is moved forward/backward by rotating the feed screw shaft 31 by the electric motor 30, and the seat frame 2a is pushed/pulled in the forward/backward direction), the seat 2 is moved forward/backward along the guide unit 20. Since the seat section 2 and the backrest section 3 are coupled via the swinging section 10, the lower end of the backrest section 3 moves forward when the seat section 2 moves forward, and conversely, the lower end of the backrest section 3 moves backward when the seat section 2 moves backward.

However, in such a situation, since the reclining operation of the backrest 3 cannot be obtained, the following structure is added to the seat moving mechanism 15.

That is, the backrest 3 is provided with a rail member 40 in a direction connecting the lower end portion and the upper end portion thereof, and the base frame 6 is provided with a slide holding portion 41 for holding the rail member 40 of the backrest 3 and a pivot support portion 42 for holding the slide holding portion 41 itself.

Specifically, the rail member 40 of the backrest 3 is formed by a pair of left and right vertical members 45 provided in the longitudinal direction (the spine direction of the user who leans on the backrest 3) in the back frame 3a constituting the backrest 3. The vertical member 45 is formed of a square pipe or the like having a hollow quadrangular cross section.

On the other hand, the slide holding portion 41 of the base frame 6 is externally fitted to the rail members 40 (the left and right vertical members 45) of the backrest portion 3, and holds the rail members 40 so as to be relatively movable in the longitudinal direction thereof. Further, since the vertical member 45 is formed of a square pipe or the like, the slide holding portion 41 can perform a stable relative movement by receiving a rotation preventing action and a play preventing action about the longitudinal direction (movement axis) of the vertical member 45.

On the other hand, the rotation support portion 42 rotatably holds the slide holding portion 41 around the axis in the left-right direction, and is provided so as to protrude inward facing in the left-right direction at a position where the pillar portion 6a on the rear side of the base frame 6 protrudes upward from the upper frame 8, and holds the slide holding portion 41 by the front end portion in the protruding direction.

That is, if the forward pulling action is transmitted to the lower end portion of the backrest 3 via the swinging portion 10 when the seat 2 is moving forward, the rail member 40 of the backrest 3 slides downward in the slide holding portion 41, and the slide holding portion 41 pivots in a direction in which the upper end portion of the backrest 3 is tilted rearward about the rotation center supported by the pivot support portion 42. Therefore, the downward sliding of the rail member 40 and the backward rotation of the slide holding portion 41 cooperate with each other, and the backrest 3 is reclined so that the lower end of the backrest 3 is advanced together with the advance of the seat 2, and the upper end of the backrest 3 is lowered and is lowered backward.

On the other hand, if the backward pushing action is transmitted to the lower end portion of the backrest 3 via the swinging portion 10 when the seat portion 2 is retracted, the rail member 40 of the backrest 3 slides upward in the slide holding portion 41, and the slide holding portion 41 pivots in a direction to raise the upper end portion of the backrest 3 forward with the rotation center supported by the pivot support portion 42 as a fulcrum. Therefore, the upward sliding of the rail member 40 and the forward rotation of the slide holding portion 41 cooperate with each other, and the backrest 3 is reclined so that the lower end portion of the backrest 3 is moved backward together with the backward movement of the seat 2, and the upper end portion of the backrest 3 is moved upward and moved forward.

However, during the rearward reclining operation, the rail member 40 of the backrest 3 slides downward in the slide holding portion 41. In other words, as the backward reclining operation is performed, the backrest 3 is pulled out forward, and as a result, the upper end of the backrest 3 descends along "one (one) vertical line". Therefore, the upper end portion of the backrest portion 3 does not protrude largely rearward from the state before reclining when viewed as the whole of the chair-type massage machine 1.

The term "along a single vertical line" used herein is not intended to be strictly "a specific 1 point always moves (never moves away) in 1 straight line", but is to be understood to mean "a specific portion that can be recognized as the upper end of the backrest portion 3 moves up and down substantially straight without significant detour or the like".

Therefore, even if the chair-type massage machine 1 is provided close to the indoor wall surface W, for example, the upper end portion of the backrest portion 3 is less likely to contact the indoor wall surface W when reclining rearward, and as a result, the chair-type massage machine 1 can be provided close to the indoor wall surface W, which brings an advantage of not unnecessarily reducing the indoor space.

It goes without saying that even when the backrest 3 is reclined backward and then reclined forward (raised forward), the upper end of the backrest 3 does not protrude largely backward from the state before reclining, and therefore, the chair-type massage machine 1 can be provided close to the indoor wall surface W.

Next, the posture changing mechanism 16 for changing the posture of the leg massage apparatus 5 will be described.

As is clear from fig. 1, 2, 5, and the like, the posture changing mechanism 16 includes a swing arm 47 for connecting the seat 2 and the leg massage device 5, and a posture driving unit 48 for swinging and driving the swing arm 47.

As shown in fig. 1, a base fulcrum 50 for supporting the swing about the axial center is provided at a substantially central portion (between the left and right swing portions 10) of the seat frame 2a so as to be connected to the base end portion of the swing arm 47 in the seat 2. As shown in fig. 2, the leg massage device 5 is provided with a front fulcrum 51 which is provided at an upper portion of a rear surface of the leg massage device 5 so as to be connected to a front end portion of the swing arm 47 and supports the swing about the axial center with the axial center direction oriented in the left-right direction.

As shown in fig. 3, the swing arm 47 is configured to have bent portions bent at an angle substantially close to a right angle at two positions near the base end (the side connected to the base fulcrum 50) and near the tip end (the side connected to the front fulcrum 51) so as not to contact and interfere with the leg massage apparatus 5 when the leg massage apparatus 5 is stored in the storage position P below the seat section 2.

The attitude driving section 48 may be, for example, an electric feed screw type telescopic mechanism. This electric telescopic mechanism is a mechanism that protrudes from one end portion of the cylinder portion 55 in a state where the feed screw shaft 56 cannot rotate around the axis, and a nut member (not shown) that is screwed to the feed screw shaft 56 is housed in the cylinder portion 55. That is, the feed screw shaft 56 can be extended or contracted with respect to the cylinder 55 by rotating the nut member around the feed screw shaft 56 by the electric motor 57 provided in the cylinder 55.

The electric telescopic mechanism is provided with a radial lever radially protruding from a base fulcrum 50 of the seat frame 2a, a front end portion of a cylinder 55 is coupled to the radial lever, and a rear end portion of a feed screw shaft 56 held in a state of protruding rearward from the cylinder 55 is coupled to the rear member 36 of the seat frame 2a (the tailstock 35).

As is clear from this, if the posture drive section 48 is operated (the nut member is rotated by the electric motor 57 to extend and contract the feed screw shaft 56 and swing the swing arm 47 in the front-rear direction), the leg massage apparatus 5 is pushed out forward of the base frame 6 or pulled in reverse toward the base frame 6. Since the leg massage device 5 is provided with the wheels 14 so as to roll in the front-rear direction on the floor surface F, the leg massage device 5 on the floor surface F can be smoothly pushed out or pulled in.

Further, since the leg massage device 5 is in a state in which the upper end portion of the leg massage device 5 can be easily swung in the front-rear direction with the wheel 14 as a fulcrum, when the leg massage device 5 is pushed forward by forward swing of the swing arm 47, the leg massage device 5 gradually raises the upper portion, and conversely, when the leg massage device 5 is pulled back rearward by rearward swing of the swing arm 47, the leg massage device 5 gradually lowers the upper portion rearward.

As shown in fig. 5, in the forward swing of the swing arm 47, the leg massage apparatus 5 is erected while being inclined rearward at an angle such that the user sitting on the seat 2 can easily put the legs into the leg rest 13 of the massage surface 5a even in a relaxed posture (posture with the knees extended to some extent) in which the user extends the legs forward. Further, as a final stage of the forward swing of the swing arm 47, the user can easily stand up at such a standing angle that the user can easily put the legs in even a posture in which the user bends the knees at right angles.

On the other hand, in the final stage of the process in which the swing arm 47 swings backward, as shown in fig. 3, the leg massage apparatus 5 is lowered to a state in which the back surface thereof faces and is close to the floor surface F, and stored in the storage position P below the seat section 2.

The posture changing mechanism 16 having such a configuration is a mechanism in which the swing arm 47 is connected between the seat 2 and the leg massage device 5 as described above, and the posture driving unit 48 (electric telescopic mechanism) for swinging the swing arm 47 is a member provided between the base fulcrum 50 of the seat frame 2a and the rear member 36. That is, the seat 2 is a base for supporting the leg massage apparatus 5.

Therefore, even if the seat 2 is moved forward and backward or the front end of the seat 2 is moved up and down by the seat moving mechanism 15, the relative distance between the seat 2 and the leg massage device 5 is always kept within the swing radius of the swing arm 47 around the base fulcrum 50. In such a holding relationship, it can be said that the posture changing mechanism 16 can change the posture of the leg massage apparatus 5 with respect to the seat section 2.

Here, the relative distance between the seat section 2 and the leg massage apparatus 5 means a distance relationship such that a user can put the leg into the leg massage apparatus 5 (can use the leg massage apparatus 5 as it is) by simply extending the leg forward or dropping the leg downward at the front portion of the seat section 2 even if the user seated on the seat section 2 does not move at the same time with respect to the seating position or the seating posture of the seat section 2. According to such a relation, the numerical strictness between the seat 2 and the leg massage apparatus 5 is not required.

Therefore, for example, as shown in fig. 4, a situation in which the seat section 2 is moved forward and the backrest section 3 is tilted backward (in short, a situation in which the leg massage apparatus 5 is not used) in a state in which the leg massage apparatus 5 is stored at the storage position P below the seat section 2, or a situation in which the leg massage apparatus 5 is projected forward in a state in which the seat section 2 is moved backward and the backrest section 3 is tilted forward as shown in fig. 6 can be freely selected according to the user's desire.

The operation of the chair-type massage machine 1 having the above-described structure will be briefly described.

First, as shown in fig. 3, the seat 2 is retracted, the backrest 3 is in a forward reclining state, and the leg massage device 5 is in a state of being stored in the storage position P below the seat 2. The bottom surface of the leg massage device 5 in the storage position P faces forward, the massage surface 5a faces upward, and the bottom surface is substantially flush with the front end of the seat 2.

When the electric motor 30 of the seat moving mechanism 15 is operated from this state, as shown in fig. 4, the lower end portion of the backrest 3 is pulled out forward via the swinging portion 10 as the seat 2 moves forward, and the backrest 3 is tilted backward so that its upper end portion falls down backward while being tilted downward.

Therefore, the user seated on the seat 2 in this state can sit in a relaxed posture with his upper body tilted rearward. Of course, if the massage unit 9 or the like provided in the backrest 3 is operated, the user can receive a massage on the upper body (the back or the like) in the above-described relaxed posture.

When the electric motor 57 of the posture changing mechanism 16 is operated according to the preference of the user or the like, the leg massage apparatus 5 is pushed forward from the storage position P on the basis of the seat section 2 as shown in fig. 5, and becomes the standing posture. At this time, since the leg massage apparatus 5 is disposed forward of the seat 2, the user can easily put the legs into the leg rest 13 of the massage surface 5a even in a relaxed posture (posture in which the knees are extended to some extent) in which the legs are extended forward. Of course, if the leg massage apparatus for the lower limbs of the leg massage apparatus 5 is operated, the user can receive the massage to the lower limbs in the above-described relaxed posture.

When the user wants to raise the upper body, the electric motor 30 of the seat moving mechanism 15 is operated in the opposite direction to the above, so that the seat 2 is retracted as shown in fig. 6, and the lower end portion of the backrest 3 is pushed rearward via the swinging portion 10, and the backrest 3 is tilted forward so that the upper end portion thereof is raised forward.

When the use of the chair-type massage machine 1 is stopped or interrupted, the electric motor 57 of the posture changing mechanism 16 is further operated in the direction opposite to the above-described direction, whereby the leg massage apparatus 5 can be returned to the initial storage state shown in fig. 3 in addition to the retracted state of the seat unit 2 and the forward reclining state of the backrest unit 3.

When the leg massage device 5 is stored in the storage position P, the bottom surface thereof faces forward and does not protrude from the front end portion of the seat 2, so that the chair-type massage machine 1 can be used as a simple chair.

[ 2 nd embodiment ]

Fig. 7 to 14 show a chair-type massage machine according to embodiment 2 of the present invention.

The chair-type massage machine 1 according to embodiment 2 has the same basic configuration as that of embodiment 1 in that it includes a seat 2, a backrest 3 provided at the rear of the seat 2, and a leg massage device 5 provided at the front of the seat 2.

The same applies to the first embodiment, for example, in that the seat section 2 is supported at a predetermined height by the base frame 6, in that the lower end portion of the backrest section 3 is connected to the rear end portion of the seat section 2 via the swinging section 10 supported swingably about the axis in the left-right direction, and in that the massage sections 9 for performing a massage operation on a user sitting on the seat section 2 are provided in the backrest section 3, the seat section 2, or both the left and right sides thereof.

Further, the chair-type massage machine 1 is configured such that the seat 2 can move forward and backward by the seat moving mechanism 15 and the forward and backward movement of the seat 2 is interlocked with the reclining operation of the backrest 3, and the leg massage device 5 can be changed in various postures by the posture changing mechanism 16, and is substantially the same as in embodiment 1.

The chair-type massage machine 1 according to embodiment 2 is most different from embodiment 1 in the formation position of the guide portion 20 for guiding the seat portion 2 to move freely in the front-rear direction with respect to the seat portion moving mechanism 15. The posture changing mechanism 16 is configured to include a lower arm member 72 and an intermediate link 73 in addition to the swing arm 47.

Therefore, the difference from embodiment 1 will be described first with respect to the guide section 20 of the seat section moving mechanism 15.

As shown in fig. 8, the guide portion 20 is constituted by the lower frame 7 of the base frame 6. The lower frame 7 is formed with a pair of left and right side members 60 whose longitudinal direction is oriented in the front-rear direction so as to be parallel to the left and right side members 24 of the upper frame 8 at the lower side, and a rear member 61 that connects the rear end portions of the left and right side members 60 to each other.

The left and right side members 60 are provided with front half portions inclined in the front elevation direction (front elevation inclined portions) and rear half portions parallel to the floor surface F (rear horizontal portions) at substantially the center in the front-rear direction as boundaries. The front half and the rear half of the side member 60 are all formed by a square pipe or the like having a hollow quadrangular cross section.

On the other hand, the seat frame 2a is provided with a leg frame 63 fitted into the base frame 6 (between the left and right side members 24). The leg frame 63 has a total of 4 leg members 64 separated in the front-rear direction and the left-right direction, and a bridging member 65 is provided so as to straddle the lower end portions of the leg members 64.

The bridging member 65 is provided at positions near the front and rear portions thereof with sliding portions 67 and 68 (front sliding portion 67 and rear sliding portion 68) that are fitted to the side member 60 and are slidable in the longitudinal direction (i.e., the front-rear direction) of the side member 60.

The front sliding portion 67 is provided so as to slide forward and backward in a region where the front half portion of the side member 60 is inclined upward in the front direction (front inclined upward portion), and the rear sliding portion 68 is provided so as to slide forward and backward in a region where the rear half portion of the side member 60 is horizontal (rear horizontal portion).

In this way, the side member 60 of the lower frame 7 constituting the base frame 6 has a structure in which the front sliding portion 67 and the rear sliding portion 68 provided on the seat frame 2a are slidably held in the front-rear direction, thereby constituting the guide portion 20.

With this configuration of the guide portion 20, when the seat portion 2 moves forward, the front end of the seat portion 2 moves upward as the seat portion 2 moves forward, and conversely, when the seat portion 2 moves rearward, the front end of the seat portion 2 moves downward as the seat portion 2 moves rearward.

However, unlike the case of embodiment 1, since the forward movement of the seat 2 is caused only by the front slide portion 67 (the height is constant regardless of the slide position of the rear slide portion 68), the rear portion of the seat 2 does not move upward even when the seat 2 moves forward, and as a result, a situation can be obtained in which the difference in height between the front portion and the rear portion of the seat 2 increases as the seat 2 moves forward.

Further, the forward/backward driving unit 21 for moving (driving) the seat 2 in the forward/backward direction with respect to the guide unit 20 employs an electric feed screw mechanism, as in embodiment 1. That is, the feed screw shaft 31 rotationally driven by the electric motor 30 is attached to the lower frame 7 of the base frame 6 in a state of protruding forward, and the nut member 32 screwed to the feed screw shaft 31 is held by the engaging member 65 provided to the leg frame 63 of the seat frame 2a in a state of being unable to rotate around the axis of the feed screw shaft 31.

As described above, since the guide portion 20 has the horizontal region in the rear half and holds the nut member 32 at the approaching position in the front-rear direction with respect to the rear sliding portion 68 moving along the horizontal region, the feed screw shaft 31 does not need to be inclined in the front-upward direction and is provided horizontally.

Next, a difference from embodiment 1 will be described with respect to the posture changing mechanism 16 for changing the posture of the leg massage apparatus 5.

As described above, the posture changing mechanism 16 according to embodiment 2 includes the swing arm 47 for connecting the seat 2 and the leg massage device 5, and the posture driving unit 48 for swinging and driving the swing arm 47. Further, the posture changing mechanism 16 includes a lower arm member 72 and an intermediate link 73.

A pair (two) of left and right swing arms 47, lower arm members 72, and intermediate links 73 are provided. The intermediate links 73 of the swing arm 47, the lower arm member 72, and the intermediate links 73 are provided on both the left and right sides of the leg massage device 5.

A reverse fulcrum 75 for supporting the leg-massaging device 5 to swing about the axis in the left-right direction is formed at a middle portion of the intermediate link 73. The intermediate link 73 has a structure in which the coupling ends 76 and 77 protrude in both directions away from the pivot 75.

As shown in fig. 7, a pair of left and right bracket pieces 78 projecting obliquely downward forward from the left and right swinging portions 10 are provided on the seat frame 2 a. The bracket piece 78 is provided with a base fulcrum 50 for supporting the swing about the axial center with the axial center direction oriented in the left-right direction, and the base end portion of the swing arm 47 is connected via the base fulcrum 50. The tip end portion of the swing arm 47 thus provided and one end portion (one connecting end portion 76) of the intermediate link 73 are swingably connected via a front fulcrum 51.

In contrast, the lower arm member 72 is formed by a front protruding portion 87 that extends downward from the base fulcrum 50 of the seat section 2 and then bends forward to protrude forward, and a telescopic rod portion 81 that is held in a forward slidable state on the front protruding portion 87. The tip end portion of the telescopic link 81 thus provided and the other end portion (the other connecting end portion 77) of the intermediate link 73 are swingably connected via an auxiliary fulcrum 82.

Thus, the leg massage apparatus 5 is rotatable about the reverse rotation fulcrum 75 of the intermediate link 73, and can be reversed (can be overturned) between a state in which the massage surface 5a faces upward as shown in fig. 9 and 10 and a state in which the massage surface 5a faces the floor surface F as shown in fig. 12 and 14. In the middle of this reversal, the massage face 5a may be directed forward as shown in fig. 11 and 13.

The back surface 5b of the leg massage device 5 faces upward with the massage surface 5a facing the floor surface F. That is, since the leg rest section 13 does not face upward, the user seated on the seat section 2 can place the leg on the back surface 5b of the leg massage apparatus 5 with the leg extended forward.

In addition, as in embodiment 1, the attitude driving section 48 employs an electric feed screw type telescopic mechanism (a mechanism in which a feed screw shaft 56 is extended or retracted from a cylinder section 55 by an electric motor 57).

By operating the posture drive section 48, the leg massage device 5 is pushed out to the front of the base frame 6 or pulled in to the base frame 6 in the opposite direction. Further, when the swing arm 47 swings forward to push out the leg massage device 5 forward, the leg massage device 5 gradually raises the upper portion, and conversely, when the swing arm 47 swings backward to pull back the leg massage device 5, the leg massage device 5 gradually lowers the upper portion backward. These are substantially the same as those of embodiment 1.

Further, when the swing arm 47 swings forward and the leg massage device 5 is sent out forward from the storage position P below the seat 2, the telescopic link portion 81 of the lower arm member 72 performs an operation of projecting forward, and conversely, when the swing arm 47 swings backward and the leg massage device 5 enters the storage position P, the telescopic link portion 81 of the lower arm member 72 performs an operation of contracting backward.

Since the leg massage apparatus 5 is held by the lower arm member 72 in this way, in embodiment 2, it is not necessary to provide the leg massage apparatus 5 with wheels (indicated by reference numeral 14 in fig. 2 and the like) for rolling in the front-rear direction on the floor surface F, and the structure can be simplified and made lighter than in embodiment 1.

However, in embodiment 2, the guide portion 20 for guiding the forward and backward movement of the seat portion 2 is inclined at a larger angle (steeply inclined) than the guide portion 20 of embodiment 1. As described above, the seat 2 is configured such that the height difference between the front portion and the rear portion of the seat 2 increases as the seat 2 advances. Therefore, as the seat section 2 moves forward and the backrest section 3 falls backward, the head and waist of the user sitting on the seat section 2 are closer to the heart. This makes it difficult for blood to collect in the tip portions of the lower limbs of the user, and has advantages such as not only a massage effect but also recovery from fatigue. In this case, it goes without saying that a higher effect can be obtained if the leg massage device 5 is projected forward to support the lower limbs of the user.

In embodiment 2, other configurations, operation conditions, operation effects, and the like are substantially the same as those in embodiment 1, and therefore, the same reference numerals are given to portions that perform the same functions in the drawings, and detailed description thereof is omitted.

[ embodiment 3 ]

Fig. 15 to 18 show a chair-type massage machine according to embodiment 3 of the present invention.

The chair-type massage machine 1 according to embodiment 3 is substantially the same as that according to embodiment 2, except for some structural improvements. Therefore, only the differences from embodiment 2 will be described below.

First, in the posture changing mechanism 16 for changing the posture of the leg massage apparatus 5, an electric feed screw mechanism (a structure in which the feed screw shaft 31 is rotated by the electric motor 30 and the nut member 32 screwed to the feed screw shaft 31 is moved back and forth) is adopted in the posture driving section 48. The electric feed screw mechanism is provided in such a direction that the feed screw shaft 31 projects forward and the electric motor 30 faces rearward.

Accordingly, since there is an advantage that the space can be enlarged below the seat 2 (inside the base frame 6), the electric feed screw mechanism used in the forward/backward driving unit 21 of the seat moving mechanism 15 can be provided in such a manner that the feed screw shaft 31 projects rearward and the electric motor 30 faces forward. In this way, if the same type of electric feed screw mechanism is used for the posture driving unit 48 of the posture changing mechanism 16 and the forward/backward driving unit 21 of the seat moving mechanism 15, the electric feed screw mechanism can be shared as the component parts of the chair-type massage machine 1, and therefore, the advantage of cost reduction can be obtained. In each of the electric feed screw mechanisms, since the electric motor 30 is disposed so as to be integrated in the base frame 6, there is an advantage that motor operation sound is not leaked to the outside and noise can be reduced.

The swing arm 47 of the posture changing mechanism 16 is formed by a front protrusion 87 that extends downward from the base fulcrum 50 of the seat 2 and then bends forward so as to protrude forward, and a telescopic portion 88 that is held by the front protrusion 87 in a state of being slidable forward. The telescopic portion 88 of the swing arm 47 is provided with a holding plate 89 having a reverse rotation fulcrum 75 at its distal end portion, and the leg massage device 5 is rotatably connected via the reverse rotation fulcrum 75 of the holding plate 89.

In embodiment 3, the swing arm 47 having such a structure can omit the lower arm member 72 and the intermediate link 73 required in embodiment 2.

As shown in fig. 15, the bridging member 90 is provided to the left and right swing arms 47 so as to straddle between the expansion and contraction portions 88, and a crank connecting portion 91 curved in a convex shape is provided at a longitudinally intermediate portion of the bridging member 90. The output portion (the nut member 32 of the electric feed screw mechanism) of the posture drive portion 48 is directly or indirectly connected to the crank connection portion 91. The rail member 40 provided in the backrest portion 3 is provided separately from the back frame 3a of the backrest portion 3.

However, the chair-type massage machine 1 according to embodiment 3 includes a mechanism 100 (forward-tilting mechanism) that can tilt the backrest 3 forward to achieve a compact configuration during transportation and storage of the present device 1.

The forward tilting mechanism 100 includes a forward tilting pivot support 101 that pivotally supports a lower side of the backrest 3. The forward and backward pivot support portions 101 are provided on the left and right sides of the backrest portion 3, and support the backrest portion 3 rotatably about the left and right axes.

Further, a 1 st projecting piece 102 projecting downward is provided at the lower end and the widthwise center portion of the back frame 3a constituting the backrest portion 3. In the present embodiment, the 1 st protruding piece 102 is provided with a pair of left and right. The 1 st projecting piece 102 moves in conjunction with the backrest 3 when it falls down forward, and becomes oriented rearward.

On the other hand, a frame beam 103 is provided on the rear side of the seat frame 2a constituting the seat 2 so as to extend in the width direction, and a 2 nd projecting piece 104 projecting rearward is provided at the center in the width direction of the frame beam 103. The 2 nd projecting piece 104 is also provided with a pair of left and right.

The forward-tilting mechanism 100 has a 1 st projecting piece 102 and a 2 nd projecting piece 104, and positions the two pieces 102 and 104 so that the front end of the 1 st projecting piece 102 and the front end of the 2 nd projecting piece 104 overlap each other in the upright state of the backrest 3.

Further, the forward-tilting mechanism 100 includes an engaging mechanism 105 for engaging and integrating the front end of the 1 st projecting piece 102 and the front end of the 2 nd projecting piece 104 in the upright state of the backrest 3. Various mechanisms can be used as the engagement mechanism 105, but as the engagement mechanism 105 of the present embodiment, a through hole 106 that can be overlapped with the tip of the 1 st protruding piece 102 and the tip of the 2 nd protruding piece 104 is provided so as to penetrate therethrough. By inserting a pin into the overlapped through hole 106, the 1 st projecting piece 102 and the 2 nd projecting piece 104 are integrated, and the backrest 3 can be held in a standing state.

On the other hand, when the backrest 3 is set to the forward-inclined state, the engagement state by the engagement mechanism 105 is released, that is, the pin is pulled out from the through hole 106, so that the engagement state between the 1 st projecting piece 102 and the 2 nd projecting piece 104 is released.

At this time, as shown in fig. 19, the backrest 3 can be turned around the forward-reverse pivot support 101 to be tilted forward, and the backrest 3 can be folded on the upper surface of the seat 2. By setting the state of fig. 19, the chair-type massage machine 1 can be made compact during transportation and storage.

In embodiment 3 described above, other configurations, operation conditions, operational effects, and the like are substantially the same as those in embodiment 2, and therefore, the same reference numerals are given to portions that perform the same functions in the drawings, and detailed description thereof is omitted.

However, the chair-type massage machine 1 according to the present invention is not limited to the embodiments 1 to 3.

For example, a configuration may be adopted in which a sensor such as a limit switch is provided on the upper surface of the seat 2 or in the leg rest 13 of the leg massage device 5, and the posture changing mechanism 16 is deactivated when the sensor detects a user or when the massage unit 9 or the lower limb massage mechanism is in operation. With such a configuration, it is possible to reliably prevent trouble such as pain in the lower limbs of the user.

Description of the reference numerals

1 chair type massage machine

2 seat part

2a seat frame

3 back support

3a back frame

5 leg rubbing device

5a massage surface

5b back side

6 basic frame

6a pillar part

7 lower frame

8 Upper frame

9 massage part

10 oscillating part

11 hinge piece part

12 lever part

13 leg placing part

14 wheel

15 seat moving mechanism

16 posture changing mechanism

20 guide part

21 advancing and retreating driving part

24-side member

25 front part

27 projecting part

28 sliding part

30 electric motor

31 screw shaft

32 nut component

35 tailstock

36 rear part

40 track component

41 sliding holding part

42 swivel bearing

45 longitudinal part

47 swing arm

48-posture driving part

50 base fulcrum

51 front fulcrum

55 cylinder part

56 screw shaft

57 electric motor

60 side parts

61 rear part

63 feet frame

64 foot component

65 overlapping parts

67 front sliding part

68 rear sliding part

72 lower arm part

73 intermediate link

75 reverse rotation fulcrum

76 connecting end portion

77 connecting end portion

78 bracket sheet

81 telescopic rod part

82 auxiliary supporting point

87 front projection

88 expansion part

89 holding plate

90 lap joint component

91 crank connection part

100 forward-reverse mechanism

101 front inverted pivot bearing

102 1 st projection

103 frame beam

104 nd 2 protruding piece

105 engaging mechanism

106 through hole

F ground

P storage position

W indoor wall surface

Claims (12)

1. A chair-type massage machine comprising a seat, a base frame for supporting the seat on the floor, a backrest part provided to be capable of reclining on the rear part of the seat, and a massage part for massaging a user seated on the seat,

when the backrest is reclined, the upper end of the backrest moves up and down along a vertical line,

in order to move up and down along a vertical line while an upper end portion of the backrest portion is tilted, a rail member is provided in the direction connecting a lower end portion and the upper end portion of the backrest portion, and the base frame is provided with a slide holding portion for movably holding the rail member of the backrest portion in a longitudinal direction thereof and a rotation support portion for rotatably holding the slide holding portion around an axis in a left-right direction.

2. The chair-type massage machine according to claim 1, wherein the backrest part has the following structure: in the rearward reclining operation, the lower end portion of the backrest portion moves forward and the upper end portion moves downward, and in the forward reclining operation, the lower end portion of the backrest portion moves rearward and the upper end portion moves upward.

3. The chair-type massage machine according to claim 2,

the seat part can move back and forth relative to the base frame;

the seat section is configured to be moved back and forth in conjunction with the back and forth movement of the lower end section of the backrest section accompanying the reclining operation.

4. The chair-type massage machine according to claim 3, wherein the seat unit is configured to perform a forward raising operation for raising a front end of the seat unit in conjunction with the forward movement and a forward lowering operation for lowering the front end of the seat unit in conjunction with the backward movement.

5. The chair-type massage machine according to claim 3 or 4, wherein the rear end portion of the seat portion and the lower end portion of the backrest portion are connected to be swingable about an axis in the left-right direction so that the forward-and-backward movement of the seat portion is interlocked with the forward-and-backward movement of the lower end portion of the backrest portion accompanying the reclining operation, and wherein the base frame is provided with a guide portion which guides the seat portion to be movable in the forward-and-backward direction and a forward-and-backward movement driving portion which moves the seat portion in the forward-and-backward direction.

6. The chair-type massage machine according to claim 5, wherein the guide portion of the base frame is provided so as to be inclined upward in the front direction.

7. The chair-type massage machine according to any one of claims 1 to 4, wherein a leg-rubbing device for massaging the lower limbs of the user is provided at a front portion of the seat.

8. The chair-type massage machine according to any one of claims 1 to 4, wherein the backrest portion is configured to be tilted forward, and an engagement mechanism for engaging a lower end portion of the backrest portion with a rear end portion of the seat portion is provided to hold the backrest portion in an upright state.

9. A chair-type massage machine comprising a seat, a base frame for supporting the seat on the floor, and a leg-massaging device provided in the front part of the seat,

a seat moving mechanism for moving the seat at least in the front-rear direction is provided on the base frame;

the seat part is provided with a posture changing mechanism which maintains the relative distance between the seat part and the leg massage device and can change the posture of the leg massage device relative to the seat part,

the seat moving mechanism is configured to perform a forward raising operation for raising a front end of the seat when the seat moves forward and a forward lowering operation for lowering the front end of the seat when the seat moves backward;

the posture changing mechanism is a structure which can keep the relative distance between the seat part and the leg kneading device when the front part of the seat part rises and can change the posture of the leg kneading device relative to the seat part,

the seat moving mechanism has a guide part provided on the base frame and guiding the seat to move freely in the front-back direction, and a forward-backward driving part moving the seat in the front-back direction;

the posture changing mechanism includes a base fulcrum provided on the seat portion and supporting swinging about a left-right axis, a swinging arm having a base end connected to the base fulcrum, and a lower arm member disposed below the seat portion,

one end side of the intermediate link is connected to a front end portion of the swing arm via a front support point so as to be swingable about a left-right axis, the other end side of the intermediate link is connected to a front end portion of a telescopic link portion of the lower arm member so as to be swingable about a left-right axis, and the leg massage device is connected to a middle portion of the intermediate link so as to be swingable about a left-right axis via a reverse support point.

10. The chair-type massage machine according to claim 9, wherein,

the lower arm member has a front protrusion extending downward from the seat portion and having a front end bent forward, and an extendable rod portion provided slidably forward with respect to the front protrusion;

the other end side of the intermediate link is connected to the tip end of the telescopic link so as to be swingable about the axis in the left-right direction.

11. The chair-type massage machine according to claim 9 or 10, wherein the posture changing mechanism is configured to be able to store the leg massage apparatus in a storage position formed below the seat portion.

12. The chair-type massage machine according to claim 9, wherein,

a backrest part is provided at a rear part of the seat part so as to be capable of reclining, and an upper end part of the backrest part moves up and down along a vertical line during reclining of the backrest part;

the backrest part has the following structure: in the rearward reclining operation, the lower end portion of the backrest portion moves forward and the upper end portion moves downward, and in the forward reclining operation, the lower end portion of the backrest portion moves rearward and the upper end portion moves upward.