JP5129467B2 - Dental treatment chair - Google Patents

Description

  The present invention relates to a dental treatment chair that is kind to an elderly person or a body accessory, and that can adjust each part according to the body shape.

  A conventional dental treatment chair includes a chair in which the contour seat and the leg rest are tilted in conjunction with the backward tilting operation of the back rest, and the backrest, the contour seat and the leg rest are moved up and down. As shown in FIG. 8, these chairs have a large gap W between the lower end of the backrest 1 and the rear end of the contour seat 2 when the backrest 1 is tilted backward, and there are steps in the vertical direction. Although this gap W cannot be adjusted, depending on the patient's body shape, the waist was lifted due to the gap W, and a relaxed sleeping figure could not be obtained. In addition, the conventional chair for dental treatment was composed of separate chairs for the legrest front folding type and the canter type. In addition, for example, the inventions disclosed in Patent Document 1 to Patent Document 6 are known.

  In the invention of Patent Document 1, when the contour seat tilts in conjunction with the backward tilting operation of the backrest, the rear end of the contour seat is shifted downward with respect to the lower end of the backrest, thereby generating a gap. Is configured so that the rear end of the contour seat can be lifted up in order to prevent a heavy burden on the waist.

  In the invention of Patent Document 2, the contour seat is tilted to the maximum when the backrest is tilted backward by about half, and the contour seat is linked to the maximum by tilting the backrest to the maximum extent. By tilting slightly, the position of the knee is lowered and the patient is placed in an easy medical posture.

  The invention of Patent Document 3 is configured to facilitate the patient's standing by tilting the seat surface forward by lifting the rear end side together with the backrest with the front end edge of the seat portion as a support shaft. is there.

  The invention of Patent Document 4 is configured such that the rear end side of the contour seat is lifted up and tilted forward to facilitate getting on and off, and the whole can be tilted backward to enter a medical posture. .

  The invention of Patent Document 5 is configured such that the legrest is a forward folding type and the legrest can be rotated to the back side of the contour sheet.

  The invention of Patent Document 6 facilitates getting on and off an elderly person or a child's chair by lowering the front end side with the rear end edge of the contour seat as a support shaft.

  However, in the case of Patent Document 1, although the rear end of the contour seat is configured to be lifted up, a configuration for lifting up in conjunction with the back tilting operation of the backrest using an actuator is described. Not.

  In the case of Patent Document 2, although the tilt angle of the contour seat is automatically adjusted in conjunction with the backward tilting operation of the backrest, the patient can maintain a comfortable posture. There is no description about adjusting the positional relationship with the rear end.

In each case of Patent Documents 3 to 6, it is described that the seat surface of the contour seat is tilted forward, but it is not described that the seat is tilted forward using an actuator.
In addition, none of the above-mentioned documents describes a configuration in which both a front folding type of a leg rest and a canter type that arbitrarily fixes the front folding are shared by one chair.

JP 2005-529644 A JP 2001-327558 A JP 2001-321240 A JP-A-11-226065 JP 2005-198679 A Japanese Patent No. 3568385

Therefore, Oite the dental chair in the Patent Documents 1 to 6 are not able to provide passenger is or difficult, or cause danger, also the mood to relax the comfort withstand prolonged medical things and, problems such as a front-foldable and Cantor type of leg rest could not be shared by one of the dental chair is present.

In order to achieve the above object, claim 1 of the present invention comprises a backrest 1, a contour seat 2, a leg rest 3, and a headrest 4, and the contour seat 2 and the headrest 3 are interlocked with the backward tilting operation of the backrest 1. In the dental treatment chair configured such that the backrest 1, the contour seat 2, the legrest 3, and the headrest 4 can be moved up and down by an elevating mechanism provided below the upper base 5. A tilt link base 9 is rotatably connected between one end of a seat link base 7 fixed to the back surface of the contour seat 2 and the track frame 8, and the middle of the tilt link base 9 and the seat link base A seat actuator 11 is provided between the other end of the seat 7 via a seat nut receiver 10 and the seat actuator is provided. 11, when the seat link base 7 is connected to the tilt link base 9 (point A), the connecting portion (point B) with the seat actuator 11 via the seat nut receiver 10 has a circular arc. A lift mechanism 6 is provided between the lower surface of the contour seat 2 and the upper base 5 so that the rear end of the contour seat 2 can be lifted up by drawing and rotating. One end of a leg link base 13 fixed to the lower surface of the rest 3 is rotatably connected to one end of a seat link base 7 on the contour seat 2 side, and one end of the tilt link base 9 and the leg link base A leg actuator 15 is provided via a leg nut receiver 14 between the vicinity of the tip of 13 and the leg actuator 15 In the contraction operation, the leg link base 13 is connected to the seat link base 7 (point C) as a fulcrum, and the connection portion (point D) to the leg actuator 15 via the leg nut receiver 14 draws an arc. A lift mechanism 12 configured to rotate so that the legrest 3 can rotate downward and rotate beyond the vertical position to the back side of the contour seat 2 is provided on the lower surface of the legrest 3. 1 set of both a front folding type capable of folding forward the leg rest 3 and a canter type configured such that the relative angle between the backrest 1 and the contour seat 2 is arbitrarily fixed and cannot be folded forward. It is characterized in that it can be shared with other dental treatment chairs.
Further, the invention according to claim 2 is the dental treatment chair according to claim 1, wherein the lift-up of the contour seat 2 by the lift mechanism 6 is lifted up independently without being interlocked with the backward tilting operation of the backrest 1. It is characterized by being configured to be able to.
The present invention is a patient a gap generated between the rear end of the lower end contour seat backrest with constituting a front foldable and Cantor-type leg rest to be shared by one dental chair such as by configured to be adjusted forms, also the seat surface to allow anteversion, and each unit of Rutotomoni each configured to configured to be rotatable to the back side of the contour seat leg rest by an actuator of the backrest An object of the present invention is to provide a dental treatment chair that is configured to be interlocked or single-acting with a backward tilting operation.

In the dental treatment chair of the present invention, the front folding type and the canter type of the leg rest can be shared by one dental treatment chair, so that it is easy to get on and off by the front folding type, and the comfort of the canter type is comfortable. Both characteristics can be obtained. In addition, by adjusting the gap between the lower end of the backrest and the rear end of the contour seat, there is a secondary effect that the patient's stress is eliminated by eliminating head misalignment with the headrest that occurs when the backrest is tilted backward. It is done. This eliminates the need to adjust the position of the headrest after the head is displaced. Furthermore, there is an advantage that getting on and off becomes easy and safe by tilting the seat surface forward and rotating the leg rest to the back side of the contour seat.

  Engage the tilt of the backrest, contour seat, and legrest with an actuator to make it easy and safe for patients to get on and off, and to maintain an optimal posture according to the patient's age, disabled person, body shape, etc. Or realized with a single-acting mechanism.

  1 to 7 show an embodiment of the present invention, FIG. 1 is an overall view of a dental treatment chair with a backrest tilted backward, FIG. 2 is a diagram showing the behavior of a contour seat by an actuator, and FIG. 3 is a leg rest Fig. 4 is a diagram showing the behavior of the legrest by the actuator, Fig. 5 is a diagram showing the behavior of the contour seat when the backrest is tilted backward, and Fig. 6 is the behavior of the legrest in the sitting posture. FIG. 7 is a view showing the rear end side lift-up of the contour seat in the sitting posture.

As shown in FIG. 1, the dental treatment chair of the present embodiment includes a backrest 1, a contour seat 2, a legrest 3 and a headrest 4, and the contour seat 2 and the legrest 3 are interlocked with the backward tilting operation of the backrest 1. The backrest 1, the contour seat 2, and the legrest 3 are configured to be movable up and down by a lifting mechanism (not shown) provided below the upper base 5.

Conventionally, the front folding type that allows the leg rest 3 to be folded forward and the canter type that is configured so that the relative angle between the leg rest 3 and the contour seat 2 is arbitrarily fixed and cannot be folded forward are different chairs. However, in the present embodiment , both of the above can be shared by a single chair. The configuration will be described below.

First, as shown in FIG. 1, the dental treatment chair of this embodiment is provided with a lift mechanism 6 between the lower surface of the contour seat 2 and the upper base 5. In the lift mechanism 6, a tilt link base 9 is rotatably connected between one end of a seat link base 7 fixed to the back surface of the contour seat 2 and the track frame 8. A seat actuator 11 is provided between the other end of the seat link base 7 via a seat nut receiver 10.

This mechanism, seat linkbases 7 in stretching operation of the seat actuator 11 as shown in the illustration of FIG. 2, the connecting portion between the tilt link base 9 (A point) as a fulcrum, receiving the sheet nut 10 When the connecting portion (point B) with the seat actuator 11 via the circle rotates while drawing an arc, the rear end of the contour seat 2 is lifted up as shown by the arrow in FIG.

  On the other hand, a lift mechanism 12 is provided on the lower surface of the legrest 3 as shown in FIG. In this lift mechanism 12, one end of a leg link base 13 fixed to the lower surface of the leg rest 3 is rotatably connected to one end of a seat link base 7 on the contour seat 2 side, while the tilt link base 9 A leg actuator 15 is provided between one end and the vicinity of the tip of the leg link base 13 via a leg nut receiver 14.

As shown in the explanatory diagram of FIG. 4, this mechanism extends and retracts the leg actuator 15 to cause the leg link base 13 to move the leg nut receiver 14 around the connecting portion (point C) with the seat link base 7. When the connecting portion (point D) with the leg actuator 15 is rotated while drawing an arc, the other end side of the leg link base 13 is rotated as indicated by an arrow.

With the above configuration, the dental treatment chair according to the present embodiment is configured such that the rear end of the contour seat 2 is interlocked with the backward inclination of the backrest 1 by the lift mechanism 6 provided on the lower surface of the contour seat 2 as shown in FIG. Since the rear end of the contour seat 2 can be brought closer to the lower end of the backrest 1 by lift-up, that is, reverse tilting, between the lower end of the backrest 1 and the rear end of the contour seat 2 as shown in FIG. There are no steps in the gaps, and it is possible to have a sleeping posture that can be relaxed according to the patient's situation, such as children, pregnant women, elderly people, disabled people and other non-standard bodies. Further, by lifting the rear end side of the contour seat 2 in conjunction with the backward tilting operation of the backrest 1, it is possible to prevent the patient's head and the headrest 4 from being displaced when the backrest 1 is tilted backward. The lift-up of the contour seat 2 can be lifted up independently without being interlocked with the backward tilting operation of the backrest 1.

  Further, as shown in FIG. 6, the legrest 3 is rotated downward by the lift mechanism 12 and can be rotated to the back side of the contour seat 2 beyond the vertical position. As a result, the patient can insert the scissors up to the lower surface of the contour sheet 2 and can easily stand up. Further, as shown in FIG. 7, the rear end side of the contour seat 2 is lifted up by the lift mechanism 6 and the entire chair is lifted up, so that standing is facilitated, and assistance for the elderly and physically handicapped persons becomes unnecessary. These operations may be performed by the patient himself / herself by providing the armrest 16 with a switch 17.

In addition, as described above, it can be used as a front folding type of the legrest 3, and at the same time, the rear end of the contour seat 2 is lifted up in conjunction with the rearward tilting of the backrest 1 with the front folding angle arbitrarily fixed. By doing so, it can also be used as a canter type. Therefore, both the front folding type and the contour type can be shared by one chair.
Each component of the dental treatment chair of the present invention described above can be operated in conjunction or in a single action based on an electrical command from a control unit (not shown). Alternatively, a hydraulic cylinder may be used as the actuator.

It is a general view of the dental treatment chair with the backrest tilted backward. It is a figure which shows the behavior of the contour sheet | seat by an actuator. It is a figure which shows the lift mechanism of a legrest. It is a figure which shows the behavior of the legrest by an actuator. It is a figure which shows the behavior of the contour seat at the time of back tilt of a backrest. It is a figure which shows the behavior of the legrest in a seating attitude | position. It is a figure which shows the rear end side lift up of a contour seat in a seating attitude | position. It is explanatory drawing of the conventional chair for dental treatment.

Explanation of symbols

1 Backrest 2 Contour Seat 3 Leg Rest 4 Headrest 5 Upper Base 6 Contour Seat Lift Mechanism 7 Seat Link Base 8 Track Frame 9 Tilt Link Base 10 Seat Nut Receptor 11 Seat Actuator 12 Leg Rest Lift Mechanism 13 Leg Link Base 14 Leg Nut support 15 Leg actuator 16 Armrest 17 Switch

Claims (2)

The backrest 1, the contour seat 2, the leg rest 3, and the headrest 4 are provided, and the contour seat 2 and the headrest 3 can be tilted in conjunction with the backward tilting operation of the backrest 1, and the backrest 1, the contour seat 2, in the dental treatment chair configured such that the entire legrest 3 and headrest 4 can be moved up and down by an elevating mechanism provided below the upper base 5;
A tilt link base 9 is rotatably connected between one end of a seat link base 7 fixed to the back surface of the contour seat 2 and the track frame 8, and the middle of the tilt link base 9 and the seat link base A seat actuator 11 is provided between the other end of the seat 7 via a seat nut receiver 10, and the seat link base 7 is connected to the tilt link base 9 by the telescopic operation of the seat actuator 11 (A The rear end of the contour seat 2 can be lifted by rotating the connecting portion (point B) with the seat actuator 11 via the seat nut receiver 10 as a fulcrum and rotating in a circular arc. The constructed lift mechanism 6 is provided between the lower surface of the contour seat 2 and the upper base 5, and below the leg rest 3. One end of the leg link base 13 fixed to the contour seat 2 is rotatably connected to one end of the seat link base 7 on the contour seat 2 side, and one end of the tilt link base 9 and the vicinity of the tip of the leg link base 13 A leg actuator 15 is provided between the leg link base 15 and the leg link base 13 by a telescopic operation of the leg actuator 15, and the leg link base 13 is connected to the seat link base 7 (point C) as a fulcrum. When the connecting portion (point D) with the leg actuator 15 via the leg nut receiver 14 rotates while drawing an arc, the leg rest 3 rotates downward and exceeds the vertical position to the back side of the contour seat 2. A lift mechanism 12 configured to be able to rotate to a lower surface of the legrest 3,
Both the front folding type that allows the legrest 3 to be folded forward and the canter type that is configured such that the relative angle between the backrest 1 and the contour seat 2 is arbitrarily fixed and cannot be folded forward are used as one dental unit. The dental treatment chair is configured to be shared with the treatment chair.   2. The lift-up of the contour seat 2 by the lift mechanism 6 can be lifted up independently without being interlocked with the backward tilting operation of the backrest 1. Dental treatment chair.

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