JPH0145371B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a massage chair, particularly a rocking chair type, in which a massage element for massage is incorporated into the backrest.

[Background Art] For example, Japanese Utility Model Application Publication No. 47-21490 shows a Rotsuking chair with a treatment element built into the backrest.The Matusurge chair shown here has an arcuate ground plane on its entire bottom surface. Because it is formed as a I had to keep my legs stretched out and my body tilted backwards.

[Objective of the Invention] The present invention has been made in view of the above points, and its purpose is to provide a structure that not only allows the user to swing, but also allows the user to fully move the body without lifting the body from the backrest. It is to provide a rocking chair type pine serge chair that can get pine surge.

[Disclosure of the Invention] The present invention is characterized in that in a rocking chair in which massage elements for massage therapy are provided on the backrest, an arcuate ground plane is provided on the rear side of the bottom, and a horizontal ground plane is formed on the front side of the bottom. This allows the rocking chair, which is the original function of the rocking chair, to be performed only when the chair is tilted slightly backwards, so that the body does not float off the backrest even when the chair is rocking. .

The present invention will be described in detail below based on the illustrated embodiment.The chair frame 1 here is formed by molding synthetic resin, and integrally constitutes a backrest portion and a seat portion. It has a shape in which a recess is provided in the front, and there are back supports 2, 2 on both sides of the front, respectively, and a seat support 3 on the top surface of the seat.
A head holder 4 is attached to the upper end. Each of these receivers 2, 3, and 4 consists of a plate-shaped core material 13, which is a synthetic resin molded product and is fixed to the frame 1, and a cushion 11 made of foamed urethane resin or the like arranged on the surface of the core material 13. In the back receiver 2, a surface material 12 such as cloth or leather is further applied to the surface of the cushion 11, and a surface material 12 such as cloth or leather is further applied to each of the receivers 2, 3, and 4, as well as between both back receivers 2, 2. is covered by a cover 5. Here, both sides of the frame 1 and both back supports 2, 2 attached thereto are shaped into a substantially S-shape so as to follow the shape of the back of the human body, and the user can sit on his or her lower back. support, allowing you to maintain a natural and comfortable posture.

A treatment element 6 for pine surgery and a motor 7 for driving the treatment element 6 are housed inside the chair. The motor 7 is suspended and attached to a lower plate 21 of a lower plate 20 installed at the lower part of the frame 1 and an upper plate 20 installed at the upper part of the frame 1 with vibration isolating rubber 70. The treatment element 6 is located approximately in the center of the seat, and the treatment element 6 is mounted on a movable block attached to a drive shaft 8 as a feed screw installed between the plates 20 and 21 via a bearing. It is located inside the backrest. In addition to the drive shaft 8, between the plates 20 and 21,
The rail 9 located in front of the drive shaft 8 and the drive shaft 8
Reinforcement frame 8 having a cross-sectional shape surrounding both sides and rear of
0 is constructed. Drive shaft 8 and reinforcing frame 80
are both linear, whereas rail 9
The cover 5 is bent forward at the upper part and rearward at the lower part.
The cover 5 approaches the cover 5 and separates from the cover 5 at the back during this time. The rail 9 has a U-shaped cross section that opens only toward the rear, and has a rack 10 fixed to its inner surface.

The movable block equipped with the treatment element 6 moves up and down along the rail 9 by the rotation of a drive shaft 8 whose lower end is connected to the motor 7 by a belt 71, and the treatment element 6 is moved up and down by engagement with the rack 10. 6 is rotationally driven, and includes a feed nut body 60 that is threadedly engaged with a drive shaft 8 that is a feed screw, and a pair of arms 6 whose one end is pivotally supported by the feed nut body 60.
1, 61, and a shaft 62 held at the other end of both arms 61, 61.
65, and a roller 66 which is freely rotatably attached to each tip of the radial projection of both roller plates 65 via a shaft 67 and a roller bearing 68.

To explain the movable block in more detail,
The feed nut body 60 further surrounds the outer surface of a reinforcing frame 80 which has a U-shaped cross section and surrounds the drive shaft 8 to which it is screwed. and a guide roller 83 that rolls on the rear back surface. Above shaft 6
2 has a spline 63 in its center,
A pinion 64 is attached to be able to slide freely in the axial direction and rotate integrally with the shaft 62, and guide disks 73, 73 are freely rotatable on both sides of this spline 63, and further on both sides of this, respectively. Guide plates 74, 74 are attached via bearings 75, and guide rollers 76, 76 are attached to both ends of the shaft 62.
The pinion 64 meshes with the rack 10 fixed to the rail 9, and the guide plates 74, 74 have a guide roller 78 that rolls on the front surface of the rail 9 and supports the load applied to the treatment element 6. is supported by a shaft 77 passed between its tips. Also, this guide plate 7
4 and 74, the other end of a torsion coil spring 79, which is attached to the outer periphery of the shaft 62 and has one end locked to the arm 61, is locked. The torsion coil spring 79 biases the feed nut body 60 in a direction to press the shaft 62 toward the rail 9 side. Both guide discs 73, 73 are located along the opposing inner surfaces of both sides of the rail 9, and have their outer peripheral edges in contact with the rail 9.
The guide rollers 76, 76 at both ends of the shaft 62 are located at a distance in front of the rail surface 19 formed on the frame 1, and although they do not normally contact this rail surface 19, they may be exposed to abnormal loads during treatment. Child 6
When the treatment element 6 tries to move rearward in addition to this, it comes into contact with the rail surface 19.

As described above, the treatment element 6 includes a pair of roller plates 65, 65, and a roller 66 rotatably attached to each tip of the radial projection of both roller plates 65 via a shaft 67 and a roller bearing 68. Four to six rollers 66, five in the illustrated example, are provided at equal intervals on the outer periphery of one roller plate 65.

When the drive shaft 8 is rotated by the motor 7, the movable block that screws the feed nut body 60 onto the drive shaft 8, which is a feed screw, moves up and down as the drive shaft 8 rotates. Do this. At this time, the treatment element 6 also moves up and down, but the pinion 64 here is connected to the shaft 62.
There are two states in which the rack 10 is engaged with the rack 10 as shown in Fig. 2, and a state in which it is not engaged as shown in Fig. 3. As the movable block moves up and down, the pinion 64 rotates due to engagement with the rack 10, and the treatment element 6 is rotated around the axis of the shaft 62 via the shaft 62. In the latter case, the treatment element 6 is separated from the rack 10, resulting in a free state, and as a result, the treatment element 6
The two rollers 66, which are in a stable state, are moved only up and down in a state in which they are in contact with the inner surface of the cover 5.

When the treatment element 6 is rotated and moved up and down, each roller 66 located on the outer periphery of the roller plate 65 sequentially presses the back of the human body via the cover 5. At this time, a state in which two rollers 66 are in contact with the back of the human body and a state in which only one roller 66 is in contact with the back of the human body alternately appear, and in the two states, the roller 66 is in contact with the human body. 6
Since the distances from the rails 9 to 6 are different, acupressure pressure of the difference between the two distances is applied to the human body, and this pine surge is applied along the back muscles of the back of the human body. When the treatment element 6 is moved up and down without rotating, the two adjacent rollers 66 rub the back surface of the human body as described above. Note that the front surface of the rail 9 supports the human body through the cover 5 where the treatment element 6 is not located and functions to prevent the human body from sinking, but if the cover 5 is only interposed in between, pain remains. For this purpose, a cushion portion 58 is provided on the back surface of the cover 5 in the axially central portion.

The engagement between the rack 10 and the pinion 64 is controlled by guide springs (not shown) disposed at the upper and lower ends of the rail 9, respectively. rail 9
The guide spring disposed at the upper end moves the pinion 64 in a position where it is not engaged with the rack 10.
As the rail 9 moves upward, it is pressed in the direction of engagement with the rack 10, and when the teeth engage with the rack 10, it is moved to the engagement position. pinion 6
4 is moved to a position where it does not engage with the rack 10 as it moves downward. In this way, the engagement between the pinion 64 and the rack 10 is controlled, but the reason why the guide spring reaches the part where the guide spring is installed and the switching operation is performed is because this switching command is issued by an operation switch or the like. Normally, the rotational direction of the motor 7 is controlled to be reversed by the time the pinion 64 reaches the part where the guide spring is installed, and the pinion 64 and the rack 10 are in an engaged state or engaged state. It is now possible to maintain a low-temperature state. A position detection mechanism for detecting the vertical position of the treatment element 6 necessary for performing such control is stretched between pulleys 53 and 54 attached to the lower plate 20 and the upper plate 21, and A belt 50 connected to a feed nut body 60 via a tension spring 51, and a detection unit 55 that optically detects a small hole bored in this belt 50.
It is composed of. The small holes provided in the belt 50 allow the position where the vertical movement direction of the treatment element 6 is to be reversed, that is, the position where the reversal is to be made and the state of engagement to be changed without changing the state of engagement between the pinion 64 and the rack 10. They are provided corresponding to the position where the treatment element 6 should be immediately reversed after the treatment, the storage position of the treatment element 6 at the lowest end of the rail 9, the position where the treatment element 6 should be reversed in the middle of its vertical movement, etc.

In this Matusage chair formed as described above, the bottom surface of the frame 1 itself serves as the ground surface. That is, the bottom of the frame 1, which is the back of the seat, is divided into three parts from its front end to the back of the joint between the backrest and the seat, and the front end faces the front end of the seat. An inclined surface 31 rises obliquely upward, a horizontal ground plane 32 is formed in the middle, and an arc-shaped ground plane 33 rises in an arc toward the rear end. Normally, the horizontal ground plane 32 is in contact with the ground and cannot be swayed, but if you put your weight on the backrest and tilt it slightly backwards, the arcuate ground plane 33 will touch the ground. As shown in FIG. 5, the rocking chair can be rocked back and forth, which is the original function of the rocking chair. Since the horizontal ground plane 32 is located on the front side of the arcuate ground plane 33, when the chair is swayed as a rocking chair, the forward swing angle is restricted, and the body floats away from the backrest. This prevents the user from being unable to fully entrust his/her body to the treatment element 6 located therein.

Further, the arcuate ground plane 33 here is provided with a groove running back and forth, and a stopper 14 is attached to this groove, so that the stopper 14 can freely slide along the groove. If you move the stopper 14 forward, that is, toward the horizontal ground plane 32,
Unable to tilt the chair backwards, the horizontal contact surface 3
2, the chair cannot be swayed.For this reason, even if you put your weight on the backrest with the horizontal ground plane 32 in contact with the ground, the chair does not change its posture, and the treatment element 6 By moving the stopper 14 to the rear end of the arcuate contact surface 33, the chair can be rocked, in other words, it can be used as a rocking chair. At this time, the stopper 14 regulates the maximum angle at which the chair can be swung backwards, thereby preventing it from falling backwards.

6 and 7 show other examples of the stopper 14, in which a part of the stopper 14 is exposed on the inner surface of the frame 1, and a leaf spring 15 is fixed to this exposed part. , by bringing the leaf spring 15 into contact with the inner surface of the frame 1, the stopper 1
It suppresses the movement of 4. Carelessly stopped 14
is what keeps it from moving.

Other embodiments are shown in FIGS. 8 and 9. In this case, instead of using the bottom surface of the frame 1 as a direct ground plane, legs 30 formed of pipes are attached, and the legs 30 are provided with a horizontal ground plane 32 and an arcuate ground plane 33. The stopper 14 is made of hard rubber, has a leg 30 made of a pipe passed through it, and has a nut embedded therein into which a bolted knob 16, the tip of which corresponds to the leg 30, is screwed. By loosening the knob 16, the stopper 14 can be moved back and forth, and by tightening the knob 16, the stopper 14 is fixed at that position.

[Effects of the Invention] As described above, in the present invention, the arcuate ground plane is provided on the rear side of the bottom of the rocking chair, and the front side of the bottom serves as a horizontal ground plane, so that when the rocking chair is swung, the arcuate ground plane is provided on the rear side of the bottom of the rocking chair. It is possible to put enough weight on the treatment element without causing a situation where the body sways too much and the body floats off the backrest, making it impossible to put weight on the treatment element placed on the backrest. ,Also, it is not difficult to receive pine surge due to constant shaking, and for this reason, even though it is formed as a rocking chair,
It is possible to obtain a good pine surge effect.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of the present invention, FIGS. 2 and 3 are sectional views of the same, FIG. 4 is a perspective view of the same, FIG. 5 is a side view of the same, and FIG. A broken side view of the embodiment, FIG.
FIG. 8 is a side view of still another embodiment, and FIG. 9 is a sectional view taken along line B-B of the same as above, in which 6 is a treatment element, 14 is a stopper, 32 is a horizontal ground plane, and 33 is an arcuate ground plane. shows.

Claims (1)

[Scope of Claims] 1. A rocking chair in which massage elements for massage therapy are provided on the backrest is characterized in that an arcuate ground plane is provided on the rear side of the bottom, and a horizontal ground plane is formed on the front side of the bottom. Pine sage chair. 2. The pine surge chair as set forth in claim 1, wherein the arcuate ground surface is provided with a stopper that is slidable back and forth.