JP7492219B1 - Correction chair - Google Patents

Abstract

[Problem] The objective is to provide a correction chair that can correct the spine. [Solution] The correction chair 100 has a seat part 30b on which the person to be corrected sits, frames 10, 20 to which the seat part 30b is attached, a fixed member 57 attached to the frame 20, a rotating member 72 attached to the fixed member 57 so as to be rotatable about a rotation center axis that coincides with the front-rear direction, and a face support pillow 73 attached to the rotating member and against which the face of the person to be corrected is placed to hold the head of the person to be corrected. [Selected Figure] Figure 1

Description

Patent Law Article 30, Paragraph 2 applied. Article 30, Paragraph 2 applied. Established and implemented at Chiropractic Center Angel, 39 Takeda, Oguchi-cho, Niwa-gun, Aichi Prefecture, on April 4, 2023.

The present invention relates to an orthodontic chair.

As shown in Patent Document 1, a correction chair has been proposed that allows the angle of the chair body to be freely changed and adjusted to correct pelvic distortion in a desired posture.

JP 2009-219 A

The correction chair shown in Patent Document 1 can correct pelvic distortion, but cannot correct the spine. Therefore, there was a demand for a correction chair that can correct the spine.

The present invention aims to provide a corrective chair that can correct the spine.

In order to achieve the above object, the invention of claim 1 provides an orthodontic chair,
A seat portion (30b) on which the person to be corrected sits;
A face pillow (73) is disposed in the front upper part of the seat portion, against which the face of the person to be corrected is placed and which holds the head of the person to be corrected;
A rotation mechanism (58, 72) for rotating the face pillow about a rotation center axis coinciding with a front-rear direction ,
The rotation mechanism includes:
A fixing member (57) attached to the frame (10, 20) to which the seat portion is attached;
A rotating member (72) to which the face pillow is attached and which is rotatably attached to the fixed member,
The fixed member and the rotating member are plate-shaped and arranged so as to overlap each other .

According to this, the person to be corrected sits on the seat and presses his/her face against the face pillow, and the practitioner rotates the face pillow to correct the spine of the person to be corrected to the normal direction. As a result, the person to be corrected can move his/her body properly.
Also, a mechanism for reliably rotating the face pillow can be realized.
Furthermore, since the face pillow rotates on the sliding surface between the fixed member and the rotating member, the face pillow is prevented from being rotated about a rotation center axis other than the rotation center axis that coincides with the front-rear direction. Therefore, the spine of the person to be corrected, whose face is in close contact with the face pillow, is prevented from being deformed in a direction other than the direction to be corrected.

The invention described in claim 2 is the invention described in claim 1 ,
The rotation mechanism includes:
A first sliding plate (58) attached to the fixed member in a superposed manner;
A second sliding plate (71) is attached to the rotating member by being overlapped thereon and is in close contact with the first sliding plate,
The first sliding plate and the second sliding plate are characterized by being made of a material having self-lubricating properties.

With this, the first sliding plate and the second sliding plate, which are in close contact with each other, have self-lubricating properties, so the practitioner can rotate the face pillow with a light force. In addition, there is no need to lubricate the sliding parts.

The invention described in claim 3 is the invention described in claim 1 ,
The present invention is characterized in that it further comprises a rotation limiting mechanism (57b, 77) for limiting the rotation range of the rotating member relative to the fixed member.

This prevents the face pillow from rotating beyond the practitioner's intention. This makes it possible to prevent excessive deformation of the spine of the person being corrected.

The invention described in claim 4 is the invention described in claim 3 ,
The rotation limiting mechanism includes:
A rotation limiting groove (57b) formed in either the fixed member or the rotating member;
The present invention is characterized in that it is composed of a pin (77) attached to the other of the fixed member and the rotating member and inserted into the rotation limiting groove.

This allows for a mechanism that reliably limits the range of rotation of the rotating member relative to the fixed member.

The invention described in claim 5 is the invention described in claim 1 ,
The rotating member is characterized in that a lever (78) is attached to the rotating member.

This allows the practitioner to easily rotate the face pillow by gripping the lever.

The invention described in claim 6 is the invention described in any one of claims 1 to 5 ,
The frame is
A first frame (10) to which the seat portion is attached;
a second frame (20) to which the fixing member is attached and which is attached to the first frame so as to be movable in the vertical direction;
The apparatus further comprises a drive unit (21) for moving the second frame in the vertical direction.

This allows the face pillow to be positioned in the proper vertical position according to the physique of the person being corrected. In addition, the drive unit moves the second frame to which the face pillow is attached, making it easy to adjust the face pillow in the vertical direction.

The symbols in parentheses for each means described in this section and in the claims are merely examples showing the correspondence with the specific means described in the embodiments described below, and do not affect the scope of the patent rights.

FIG. 1 is a front view of an orthodontic chair according to one embodiment of the present invention. FIG. 2 is a view from the A direction in FIG. 1 and is a side view of the correction chair according to one embodiment of the present invention. FIG. 3 is a view taken from the direction B in FIG. 2 and is a rear view of the correction chair according to one embodiment of the present invention. FIG. 1 is a top view of an orthodontic chair according to one embodiment of the present invention.

(Structure of the Stirring Device)
A correction chair 100 according to one embodiment of the present invention will be described below with reference to Figures 1 to 4. The correction chair 100 is a chair for correcting misalignment and distortion of the bones of the spine. The spine includes the cervical vertebrae, thoracic vertebrae, lumbar vertebrae, and sacral vertebrae. The correction chair 100 has a first frame 10, a second frame 20, a drive unit 21, a seat unit 30, a support frame 31, a rotation actuator 35, a chest rest 40, a hand rest 49, a face rest 70, and an operation unit 90.

The first frame 10 has a first member 11, a second member 12, a third member 13, a fourth member 14, and a fifth member 15, which are made of square pipes. The first member 11 extends in the front-rear direction. The rear end of the first member 11 is connected to the center of the length of the second member 12, which extends in the width direction. The front end of the first member 11 is connected to the center of the length of the third member 13, which extends in the width direction. When viewed from above, the first members 11 to the third members 13 form an H-shape. The fourth member 14 extends in the vertical direction, and its lower end is connected to the rear end of the first member 11 and the upper surface of the second member 12. The fifth member 15 extends in the vertical direction, and its lower end is connected to the upper surface of the first member 11, slightly rearward of the front end of the first member 11.

Disc-shaped legs 18 are screwed into the undersides of both ends of the second member 12 and the third member 13.

The seat 30 is attached to the upper end of the fourth member 14 via a support frame 31 so that it can swing. The seat 30 has a flat block-shaped seat surface 30b attached to a rectangular bottom plate 30a. The seat surface 30b is made of a flat block-shaped flexible material such as urethane foam, wrapped in a skin such as synthetic leather or natural leather. Rectangular support plates 30c are connected to the front and rear ends of the bottom plate 30a and extend upward from these connections. The extension direction of the bottom plate 30a and the extension direction of the support plate 30c are perpendicular to each other.

The support frame 31 is composed of a base 31a and a pair of support parts 31b. The base 31a is a square pipe, and its lower surface slightly forward of its rear end is connected to the upper end of the fourth member 14. The base 31a is inclined with respect to the horizontal direction so that it is positioned lower as it moves forward. Both ends of the rod-shaped reinforcing member 32 are connected to the lower surface rearward of the front end of the base 31a and the middle part of the fourth member 14. A pair of plate-shaped support parts 31b are connected to both ends of the base 31a. The seat 30 is disposed above the base 31a, and a pair of support plates 30c are disposed overlapping on the inside of the pair of support parts 31b. Each support part 31b is supported by the support plate 30c with a support shaft 33 (shown in FIG. 1). With this configuration, the seat 30 is supported by the support frame 31 so as to be rotatable. The rotation axis of the seat 30 is almost aligned with the front-to-rear direction, but is tilted from the horizontal so that it is positioned lower as it moves further forward. Therefore, the seat surface 30b is tilted from the horizontal plane so that it is positioned lower as it moves further forward.

The seat portion 30b is rotated and its rotational position is maintained by a rotation actuator 35. The rotation actuator 35 has a main body portion 35a and a rod-shaped exit portion 35b that exits from the main body portion 35a. In this embodiment, the rotation actuator 35 is an electric type that uses an electric motor. The base end of the main body portion 35a is supported by a bracket 36 at a position slightly forward of the rear end of the first member 11. The tip of the exit portion 35b is supported by a bracket 37 at the end in the width direction of the bottom plate 30a (the left end in this embodiment).

As shown in FIG. 2, the operation unit 90 is placed on the floor behind the first frame 10. The operation unit 90 and the rotation actuator 35 are electrically connected. The operation unit 90 is provided with a number of buttons 90a. When the practitioner presses the button 90a, the rotation actuator 35 is activated and the seat portion 30b rotates.

The second frame 20 is a square pipe, inserted into the fifth member 15, and attached to the fifth member 15 so as to be retractable from the fifth member 15. The drive unit 21 has a main body 21a and a rod-shaped retractable portion 21b that retracts from the main body 21a. The lower end of the main body 21a is connected to a position slightly rearward of the front end of the first member 11 via a bracket 22. The tip of the retractable portion 21b is connected to the middle portion of the second frame 20 via a bracket 23. The operation unit 90 is electrically connected to the drive unit 21. When the practitioner presses the button 90a, the drive unit 21 is activated and the second frame 20 retracts from the fifth member 15, allowing the vertical positions of the chest rest 42, hand rest 49, chin rest 54, and pair of face rests 73 to be described later to be adjusted.

The chest protector 40 is composed of a base plate 41 and a chest protector portion 42, and is disposed and attached to the rear of the second frame 20. The base plate 41 is a rectangular plate, and extends in a plane including the up-down and width directions. The chest protector portion 42 is attached to the rear surface of the base plate 41, and is made by wrapping the above-mentioned soft material with the above-mentioned skin. As shown in FIG. 4, the chest protector portion 42 is a block shape that is a flattened semicircular shape when viewed from above. The chest protector portion 42 is against the chest of the person to be corrected.

2, a bracket 43 is attached to the front of the upper part of the substrate 41. The bracket 43 is pivotally supported on the side of the upper part of the second frame 20. A bracket 44 is attached to the front of the lower part of the substrate 41. A plate-shaped swinging member 45 is pivotally attached to the side of the middle part of the second frame 20 in the vertical direction. Specifically, a long hole 45a is formed in the swinging member 45. A shaft 47a of a lever-shaped fastening member 47 is inserted into this long hole 45a. A screw thread is formed at the tip of the shaft 47a, and the shaft 47a is screwed into a screw hole (not shown) formed on the side of the second frame 20. The swinging member 45 and the bracket 43 are pivotally supported. With this structure, by loosening the fastening member 47, the chest part 42 can be rotated around the pivot point on the upper side, and the angle of the rear face of the chest part 42 can be adjusted. When the fastening member 47 is tightened, the chest part 42 is fixed to the second frame 20.

A square pipe-shaped support member 48 is attached to the vertical center of the second frame 20. The support member 48 protrudes forward from the second frame 20. A flat block-shaped hand rest 49 is placed and attached to the support member 48. The hand rest 49 is made by wrapping the above-mentioned soft material in the above-mentioned skin. The top surface of the hand rest 49 is aligned with the horizontal plane. The hand rest 49 is where the hand of the person undergoing correction is placed.

A fixed plate 51 is attached to the upper end of the second frame 20. A support plate 52 is placed on the fixed plate 51 in a superimposed manner. The rear end of the support plate 52 is rotatably attached to the rear end of the fixed plate 51 by a bolt 53. As shown in FIG. 4, a circular arc-shaped long hole 52a is formed in the front end of the support plate 52. The shaft 55a of the lever-shaped fastening member 55 is inserted into the long hole 52a. A screw thread is formed at the tip of the shaft 55a. As shown in FIG. 2, a screw hole 51a is formed in the front end of the support plate 52. The tip of the shaft 55a of the fastening member 55 is screwed into the screw hole 51a. When the fastening member 55 is loosened, the support plate 52 can swing freely relative to the fixed plate 51. On the other hand, when the fastening member 55 is tightened, the support plate 52 is fixed to the fixed plate 51.

A chin rest 54 is attached to the rear end of the support plate 52. The chin rest 54 is a block-shaped flexible material wrapped in skin. As shown in FIG. 4, the chin rest 54 has a flattened semicircular shape when viewed from above. The chin of the person undergoing correction comes into contact with the chin rest 54.

A hinge member 56 is attached to the support plate 52. The lower end of a fixed member 57, which is a substantially rectangular plate, is attached to the hinge member 56. With this structure, the fixed member 57 is attached to the support plate 52 so that it can swing. The central axis of swing of the fixed member 57 coincides with the width direction. The fixed member 57 is made of a metal such as iron. A rod-shaped handle 69 extending in the width direction is attached to the upper end of the fixed member 57. The handles 69 protrude outward from both side ends of the fixed member 57 so that the practitioner can grasp them.

A first sliding plate 58, which has the same shape as the fixed member 57, is attached to the rear surface of the fixed member 57 by overlapping it with a number of screws 59. The first sliding plate 58 is made of a synthetic resin with a low coefficient of friction and self-lubricating properties. Examples of self-lubricating resins include polyacetal, MC nylon (monomer cast nylon), fluororesin, polyamide, etc.

A bracket 60 that protrudes forward is attached to the front surface of the fixed member 57. A swinging member 63 is attached to the front end of the bracket 60 and axially supported so that it can swing, and the swinging member 63 hangs down. The swinging member 63 is in the shape of a vertically long, flat, square pipe.

A bracket 61 is attached to the support plate 52 in front of the hinge member 56. The lower end of a rectangular plate-shaped oscillating piece 62 is pivotally supported and attached to the bracket 61. A long hole 62a is formed in the oscillating piece 62. The upper part of the oscillating piece 62 is inserted into the lower part of the oscillating member 63. The shaft 64a (shown in FIG. 2) of a lever-shaped fastening member 64 (shown in FIG. 3 and FIG. 4) is inserted into the long hole 62a of the oscillating piece 62. A screw thread is formed at the tip of the shaft 64a, and a nut 65 is screwed into it. With this structure, when the fastening member 64 is loosened, the fixing member 57 oscillates around its central axis of oscillation, and when the fastening member 64 is tightened, the fixing member 57 is fixed to the support plate 52.

The face support section 70 includes a second sliding plate 71, a rotating member 72, and a pair of face support pillows 73. The second sliding plate 71 and the rotating member 72 are substantially rectangular plates having the same shape as the fixed member 57 and the first sliding plate 58. The second sliding plate 71 is made of a synthetic resin or the like having a low coefficient of friction and self-lubricating properties similar to the first sliding plate 58. The rotating member 72 is made of a metal such as iron. The second sliding plate 71 is placed over the rotating member 72 and attached to the rotating member 72 by a number of bolts 74.

The second sliding plate 71 and the rotating member 72, which are integrated, are rotatably supported at their lower ends by the lower ends of the fixed member 57 and the first sliding plate 58, which are integrated. In this embodiment, as shown in Figs. 1 and 4, the shaft 75a of the bolt 75 is inserted into the communication holes 71a, 72a, 57a, and 58a formed at the lower ends of the second sliding plate 71, the rotating member 72, the fixed member 57, and the first sliding plate 58, and the integrated second sliding plate 71 and the rotating member 72 are rotatably supported and attached to the integrated fixed member 57 and the first sliding plate 58. The tip of the shaft of the bolt 75 protrudes from the front surface of the fixed member 57, and a nut 76 (shown in Fig. 4) is fastened to the bolt 75. As shown in Fig. 4, the rotation center axis X of the rotating member 72 coincides with the front-rear direction.

The second sliding plate 71 overlaps and abuts against the first sliding plate 58. The first sliding plate 58 and the second sliding plate 71 are made of a material that has self-lubricating properties, so the frictional resistance that rotates the rotating member 72 is small, and the rotating member 72 can be rotated with a small force.

As shown in FIG. 3, arc-shaped rotation limiting grooves 57b, 58b are formed in communication with each other on the upper portions of the fixed member 57 and the first sliding plate 58, with the communication holes 57a, 58a at the center of the arc. A pin 77 is attached to the rotating member 72, which is inserted into the rotation limiting grooves 57b, 58b. This structure constitutes a rotation limiting mechanism that limits the rotation of the rotating member 72 relative to the fixed member 57.

As shown in FIG. 1, a pair of face pillows 73 are attached to the rear surface of the rotating member 72 with a gap in the width direction. The face pillow 73 is a block shape elongated in the vertical direction. The face pillow 73 is formed by wrapping the surface of the soft member described above with the above-mentioned skin. As shown in FIG. 4, the face pillow 73 is substantially fan-shaped with a central angle of 90° when viewed from above. The face pillow 73 has a surface with an arc-shaped cross section facing inward. A holding recess 73a, which is a recess recessed forward, is formed between the pair of face pillows 73. The head of the person to be corrected is pressed against and held in this holding recess 73a. As shown in FIG. 2, the pair of face pillows 73 are arranged in the front upper part of the seat part 30b.

A lever 78 is attached to the upper part of the rotating member 72, at the center of the width of the rotating member 72. The lever 78 protrudes upward from the upper end of the rotating member 72 and can be grasped.

(How to use the correction chair)
The method of using the correction chair 100 will be described below. The person to be corrected, who has a deformed spine, is seated on the seat portion 30b with the chest in contact with the chest rest portion 42. At this time, the person is asked to place his/her hands on the hand rest 49 and place his/her face in close contact with the pair of face pillows 73. In this state, the center of the face of the person to be corrected is located between the pair of face pillows 73, and the face of the person to be corrected is buried between the pair of face pillows 73, i.e., in the holding recesses 73a, and the head of the person to be corrected is held by the pair of face pillows 73.

The practitioner grasps the lever 78 and rotates the rotating member 72. Then, the head of the person being corrected, which is held by the pair of face pillows 73, also rotates, and the spine of the person being corrected is bent. The practitioner grasps the lever 78 and rotates the rotating member 72 so that the misaligned spine of the person being corrected is in the normal position. Next, the practitioner applies a pressing force to the protrusion of the spine using a pressing tool such as a pointer to perform correction. In some cases, the practitioner rocks the fixing member 57 to change the rocking position of the pair of face pillows 73, or rotates the support plate 52 to change the horizontal rotation position of the pair of face pillows 73, thereby correcting the spine of the person being corrected.

(The effect of corrective chairs)
The effects of the correction chair 100 of this embodiment will be described below.
The correction chair 100 has a seat portion 30b on which the person to be corrected sits, a face support pillow 73 that is arranged above and in front of the seat portion 30b and against which the face of the person to be corrected is placed to hold the head of the person to be corrected, and a rotation mechanism that rotates the face support pillow 73 about a rotation center axis X (shown in FIG. 4) that coincides with the front-to-rear direction.

With this, the person to be corrected sits on the seat portion 30b with their face pressed against the face pillow 73, and the practitioner rotates the face pillow 73 to correct the spine of the person to be corrected to the normal direction. As a result, the body of the person to be corrected can move accurately.

The rotation mechanism also includes a fixed member 57 attached to the frames 10 and 20 to which the seat portion 30b is attached, and a rotating member 72 to which a face pillow 73 is attached and which is rotatably attached to the fixed member 57.

This allows for a mechanism that reliably rotates the face pillow 73.

The fixed member 57 and the rotating member 72 are plate-shaped and are arranged on top of each other.

As a result, the face pillow 73 rotates on the sliding surface between the fixed member 57 and the rotating member 72, preventing the face pillow 73 from rotating about a rotation axis other than the rotation axis X that coincides with the front-to-back direction. This prevents the spine of the person to be corrected, whose face is pressed against the face pillow 73, from being deformed in a direction other than the direction to be corrected.

The rotating mechanism further includes a first sliding plate 58 that is attached to the fixed member 57 in a superimposed manner, and a second sliding plate 71 that is attached to the rotating member 72 in a superimposed manner and in close contact with the first sliding plate 58. The first sliding plate 58 and the second sliding plate 71 are made of a self-lubricating material.

As a result, the first sliding plate 58 and the second sliding plate 71, which are in close contact with each other, have self-lubricating properties, so the practitioner can rotate the face pillow 73 with a light force. In addition, there is no need to lubricate the sliding parts.

In addition, the corrective chair 100 further includes a rotation limiting mechanism that limits the rotation range of the rotating member 72 relative to the fixed member 57.

This prevents the face pillow 73 from rotating beyond the practitioner's intention. This makes it possible to prevent excessive deformation of the spine of the person undergoing correction.

The rotation limiting mechanism is composed of a rotation limiting groove 57b formed in the fixed member 57 and a pin 77 attached to the rotating member 72 and inserted into the rotation limiting groove 57b.

This makes it possible to realize a mechanism that reliably limits the rotation range of the rotating member 72 relative to the fixed member 57.

In addition, a lever 78 is attached to the rotating member 72.

This allows the practitioner to easily rotate the face pillow 73 by gripping the lever 78.

The frames 10 and 20 are composed of a first frame 10 to which the seat portion 30b is attached, and a second frame 20 to which a fixing member 57 is attached and which is attached to the first frame 10 so as to be movable in the vertical direction. The corrective chair 100 further has a drive unit 21 that moves the second frame 20 in the vertical direction.

This allows the face pillow 73 to be positioned in an appropriate vertical position according to the physique of the person being corrected. In addition, the drive unit 21 moves the second frame 20 to which the face pillow 73 is attached, making it easy to adjust the face pillow 73 in the vertical direction.

Other Embodiments
The present invention has been described above in relation to the embodiment that is considered to be the most practical and preferable at this time. However, the present invention is not limited to the embodiment disclosed in the specification of this application, and can be modified as appropriate within the scope of the claims and the gist or concept of the invention that can be read from the entire specification, and it should be understood that the corrective chair 100 with such modifications is also included in the technical scope.

In the embodiment described above, two face pillows 73 are arranged spaced apart in the width direction, but the face pillow 73 may have a holding recess 73a formed in the center in the width direction, into which the face of the person to be corrected is buried and which holds the head of the person to be corrected.

In the embodiment described above, the rotation limiting mechanism that limits the rotation range of the rotating member 72 is composed of rotation limiting grooves 57b, 58b formed in the fixed member 57 and the first sliding plate 58, and a pin 77 attached to the rotating member 72 and inserted into the rotation limiting grooves 57b, 58b. In an embodiment, the rotation limiting mechanism may be configured such that a rotation limiting groove is formed on the rotating member 72 and the second sliding plate 71 side, and a pin 77 that inserts into this rotation limiting groove is attached to the fixed member 57 side.

10 First Frame (Frame)
20 Second Frame (Frame)
21 Drive unit 57 Fixed member (rotating mechanism)
57b Rotation limiting groove (rotation limiting mechanism)
58 First sliding plate 71 Second sliding plate 72 Rotating member (rotating mechanism)
73 Face pillow 77 Pin 78 Lever 100 Correction chair

Claims (6)

A seat portion (30b) on which the person to be corrected sits;
A face pillow (73) is disposed in the front upper part of the seat portion, against which the face of the person to be corrected is placed and which holds the head of the person to be corrected;
A rotation mechanism (58, 72) for rotating the face pillow about a rotation center axis coinciding with a front-rear direction ,
The rotation mechanism includes:
A fixing member (57) attached to the frame (10, 20) to which the seat portion is attached;
A rotating member (72) to which the face pillow is attached and which is rotatably attached to the fixed member,
The orthodontic chair is characterized in that the fixed member and the rotating member are plate-shaped and arranged on top of each other . The rotation mechanism includes:
A first sliding plate (58) attached to the fixed member in a superposed manner;
A second sliding plate (71) is attached to the rotating member by being overlapped thereon and is in close contact with the first sliding plate,
2. The orthopedic chair according to claim 1 , wherein the first sliding plate and the second sliding plate are made of a material having self-lubricating properties. 2. The orthodontic chair according to claim 1 , further comprising a rotation limiting mechanism (57b, 77) for limiting the rotation range of the rotating member relative to the fixed member. The rotation limiting mechanism includes:
A rotation limiting groove (57b) formed in either the fixed member or the rotating member;
4. The corrective chair according to claim 3, further comprising a pin (77) attached to the other of the fixed member and the rotating member and inserted into the rotation limiting groove. 2. The orthodontic chair according to claim 1, characterized in that the pivot member is provided with a lever (78). The frame is
A first frame (10) to which the seat portion is attached;
a second frame (20) to which the fixing member is attached and which is attached to the first frame so as to be movable in the vertical direction;
The orthodontic chair according to any one of claims 1 to 5 , further comprising a drive unit (21) for moving the second frame in the up and down direction.

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