JP2005270212A - Dental treatment chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dental treatment chair with air bags capable of freely adjusting the position of a backrest according to the body shape of a patient because that there have been medical treatment chairs for dentistry especially aiming for the old capable of adjusting to conform to a patient by moving a backrest divided into two up and down up to now, but the chairs are based on a special specification and have no generality, and adujustment is manually carried out and burdensome. <P>SOLUTION: The chair has a plurality of inflatable and deflatable air bags having stretchability in a front direction arranged in a plurality of partitions inside of the backrest of the chair, an air distributer having an opening and closing solenoid valves for individually controlling tubes connected to the air bags, and a remote operation box of the same. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a dental treatment chair, and more particularly, to an airbag in which a position where a backrest fits can be freely adjusted according to a patient's body shape.

Traditionally, especially for elderly people, the backrest divided into two parts is moved up and down,
A dental treatment chair that can be adjusted to fit a patient is disclosed.
9 page of 98 'Morita equipment general catalog (DENTAL EQUIIPMENT) CHAIR-UNIT Shigno GR S21 (September 1998, published by Morita Corporation)

  However, the dental treatment chair has a special specification and its use is limited and has no generality, and adjustment is manual and troublesome. Also, it was not possible to set the right / left inclination of each part of the backrest.

In view of the above, the present inventors have solved the problem by the following means as a result of intensive experimental research.
(1) In a dental treatment chair provided with a curved backrest back plate having a gap on the inside, a back plate disposed on the back plate, a cushion material, and a front cover thereof, between the cushion material and the cover. In addition, a plurality of airbags that can be expanded and contracted are arranged in the left and right and upper, middle, and lower compartments, and the plurality of airbags are connected to an air tube fixed at one corner and an extension of the tube. An open / close solenoid valve for adjusting air introduction and a check valve, and an open / close solenoid valve for exhaust, and further, a main air tube and a branch disposed in the gap below the back plate of the backrest An air tube, an open / close solenoid valve and a check valve, an exhaust open / close solenoid valve, an air distributor that houses a control signal line, and an open / close solenoid valve connected to the plurality of airbags individually. Multiple operations to control And an operation box that accommodates an operation switch for the open / close solenoid valve of the main line, and one side of the open / close electromagnetic valve for air introduction adjustment is connected in parallel to the main line of the air tube, The main tube of the air tube is led out from one end, and is connected to the air supply part of the dental treatment chair via an open / close electromagnetic valve. The control signal line is a multi-core cable and is a part of an air distributor. A dental treatment chair derived from an end and connected to an operation box.
(2) In a dental treatment chair equipped with an airbag on the backrest, each of the corresponding airbags is inflated or contracted by individually operating a plurality of operation switches of the operation box, and the backrest that comes in contact with the patient The dental treatment chair according to item (1), wherein each part can be adjusted.
(3) In the dental treatment chair provided with an airbag on the backrest, the power source for adjusting the airbag is the air that is permanently installed in the dental treatment chair. (1) or (2) above Dental treatment chair as described.

1. According to the inventions of claims 1 and 2 of the present invention,
In a dental treatment chair comprising a curved backrest back plate having a gap on the inside, a back plate disposed on the back plate, a cushion material, and a front cover thereof, a plurality of spaces between the cushion material and the cover. The plurality of airbags are arranged in left and right and upper, middle, and lower compartments, and the plurality of airbags include an air tube fixed at one corner and an air connected to an extension of the tube. An opening / closing solenoid valve and a check valve for adjusting the introduction, and an exhaust opening / closing solenoid valve; and a trunk air tube and a branch air tube disposed in the space below the back plate of the backrest; Open / close solenoid valves and check valves, exhaust open / close solenoid valves, air distributors that house control signal lines, and a plurality of open / close solenoid valves that are individually connected to the plurality of airbags. Operation switch And an operation box for storing an operation switch for a main line opening / closing electromagnetic valve, and a base portion of the air adjustment opening / closing electromagnetic valve is connected in parallel to the main line of the air tube and led out from one end of the air distributor. In addition, the main line of the air tube is connected to an air supply unit of the dental chair unit via an open / close solenoid valve, and the control signal line is a multi-core cable, similarly from one end of the air distributor. Because it is derived and connected to the operation box,

Prior to treatment, the practitioner adjusts the backrest of the dental treatment chair and makes contact with the back of a special body patient, for example, an elderly person whose spine is bent forward or whose left and right balance is lost. The airbag at this point can be made to fit by being indented (expanded / reduced) by a remote control using an operation box.
Further, for example, for a short infant or the like, the upper left and right airbags can be inflated and the others can be reduced and used as a headrest.
Furthermore, each airbag can be easily adjusted by the operation switch. When the airbag is not used, the entire airbag can be reduced and used as a normal treatment chair.
2. According to the invention of claim 3,
Since the power source for adjusting the airbag in the backrest is the air that is permanently installed in the dental treatment chair, it can be branched and easily connected to the airbag.

The best mode for carrying out the invention will be described below with reference to the drawings.
FIG. 1 is a partially broken cross-sectional view and an external perspective view of a backrest of a dental treatment chair provided with an air bag.
In the figure, 1 is a dental treatment chair equipped with an air bag, 2 is a back plate of a backrest, 3 is a back plate, 4 is a cushioning material, 5 is an air bag, 6 is a front cover, 7 is an air tube, and 8 is a dispensing device. , 9 is an operation box, 10 is a control signal line, 11 is a trunk air tube, 12 is a headrest, 13 is a seat, 14 is a footrest, 15 is a spiton, 16 is a light pole, 17 is a bracket table, 18 is an assistant table Indicates.
As shown in the drawing, a total of six airbags 5 are disposed between the cushion material 4 and the cover 6 in the upper, middle, lower, left and right compartments. It is fixed.
The airbag 5 is, for example, an elastic rubber bag, the upper part of which is bonded to the cover 6, the bottom part is bonded to the cushion material 4, and is further connected to the back plate 3 (described later).
The air tube 7 has an air tube 7 fixed in one corner,
The extended end of the air tube 7 is connected to an open / close solenoid valve and check valve for adjusting air introduction, which will be described later, and an open / close solenoid valve for exhaust (FIG. 6), and is housed in an air distributor 8.
And from here through the main line air tube 11 to the operation box 9 hooked on the side of the spitn 15 via the air supply part (not shown) and the control signal line 10 of the dental treatment chair 1. It is connected.
Hereinafter, the backrest of the dental treatment chair provided with the airbag will be described in detail.

Fig. 2 is a perspective and cross-sectional view of a backrest with an airbag when inflated.
(B) is a left side cross-sectional view of the left airbag center (c) is a front view seen through the cover (d) is (c) The right cross-sectional view of the right airbag center in the figure (E) is the lower cross-sectional view of the lower airbag center.
In the figure, 5a is an airbag when inflated, 7 'is an entrance / exit, 19 is an adhesive portion on the airbag surface, 20 is an adhesive portion on the bottom surface of the airbag, 20' is a cushion material through hole, 21 is a fastener, 22 is a back. A plate connector, 23 is a back plate hooking portion, and 55 is an air tube through hole.
FIG. 3 is a perspective / cross-sectional view of a backrest with an airbag at the time of reduction,
(B) is a left side cross-sectional view of the left airbag center (c) is a front view seen through the cover (d) is (c) The right cross-sectional view of the right airbag center in the figure (E) is the lower cross-sectional view of the lower airbag center.
In the figure, 5b shows the airbag at the time of reduction.

As shown in FIG. 2, a total of six airbags 5a when inflated are disposed in the upper, middle, lower, left and right compartments between the cushion material 4 and the front cover 6. The air tube 7 is fixedly installed like a doorway 7 'in FIG.
The inflated airbag 5a is, for example, a stretchable rubber bag, the upper part of which is bonded to the front cover 6, the bottom part of which is bonded to the cushioning material 4, and the back plate connector 22 is passed through the cushioning material through hole 20 '. (B) and (D) are secured to the back plate 3 by fasteners 21.
The extended end of the air tube 7 is connected to an opening / closing solenoid valve and check valve for adjusting air introduction, which will be described later, and an opening / closing solenoid valve for exhaust (FIG. 6). The air distributor 8 is stored.
And from here through the main line air tube 11 to the operation box 9 hooked on the side of the spitn 15 via the air supply part (not shown) and the control signal line 10 of the dental treatment chair 1. It is connected.

Further, the backrest portion including the airbag 5a, the cushion material 4 and the front cover 6 when inflated includes a backing plate projecting from the backrest back plate 2 and a hanging device projecting from the back plate 3. It is hooked by the part 23.
And the front cover 6 which covers the airbag 3 has a structure with an allowance for the stretchable material and the seam allowance, and can follow the unevenness.

As shown in the figure, the air introduced from the main air tube 11 through the distributor 8 via the air valve 7 through the air tube 7 to the air bag 7 through the inlet / outlet 7 'is used as the air bag 5a at the time of inflation. The front cover 6 projects forward (forward).
At this time, the airbag 5a when inflated is attached to the front cover 6 by the adhesive portion 19 on the airbag surface, and to the back plate 3 of the airbag by the adhesive portion 20 and the back plate connector 22 on the bottom surface of the airbag. Since they are fixed to each other, there is no deviation.

As shown in FIG. 3, the airbag 5b at the time of reduction is reduced like the reduced airbag 5b when exhausted by an opening / closing solenoid valve for exhaust (described later), and the cover 6 is recessed rearward.
At this time, the airbag 5b at the time of reduction is attached to the front cover 6 by the adhesive portion 19 on the airbag surface.
Further, the cover 6 follows the shrinkage of the airbag 3 because it is fixed to the airbag back plate 3 with the fastener 21 by the adhesive portion 20 and the back plate connector 22 on the bottom surface of the airbag.

As shown in FIGS. 2 and 3, since the airbag 5 can be inflated or contracted by operation, the required unevenness can be generated by the combination thereof.
For example, if the upper left and right two are inflated and the others are reduced, they can be used as the backrest of the infant, or can be fitted by adjusting each part according to the back of a special patient. .

FIG. 4 is an external perspective view of the air distributor.
In the figure, 11 'denotes a distributor connector and 10' denotes a control line connector.
This device is disposed in a gap inside the back plate 2 of the backrest.
FIG. 5 is an external perspective view of the operation box.
In the figure, 24 is a box-side control line connector, 25 is a suspension hand, 26, 27, 28, 29, 30, and 31 are 2-pole ON / OFF switches corresponding to airbags, and 32 and 33 are ON / OFF for trunk lines. Indicates a switch.
This device is used by being suspended from the side surface of the spitone 15.

FIG. 6 is a block diagram of a dental treatment chair equipped with an airbag.
In the figure, 34, 37, 40, 43, 46, 49 are open / close solenoid valves for air introduction adjustment, 36, 39, 42, 45, 48, 51 are exhaust open / close solenoid valves, 35, 38, 41, 44, 47 and 50 are check valves, 52 is an open / close solenoid valve for an air main line, 53 is an overpressure air discharger, and 54 is a power line.

Air is taken in and out of the six airbags 5 arranged through the air inlet / outlet 7 ′ via the air tube 7 and is expanded or contracted.
The air operation control is performed as follows.
First, the main air tube 11 is opened by the air main line ON / OFF switch 32 which is an operation switch of the operation box 9 to open the air main line open / close solenoid valve 52 and introduce air.
Next, the bipolar switch ON / OFF switch of the operation switch corresponding to the required airbag 5 is operated.

For example, in the case of an air bag on the upper left, when one pole of the two-pole type ON / OFF switch 26 is turned on and the open / close solenoid valve 40 for air introduction adjustment is opened, air is introduced via the check valve 41. The airbag is inflated.
When the limit is exceeded, the overpressure air discharger 53 composed of, for example, a spring and a valve disposed in each airbag 5 operates as a limiter.
Therefore, the adjustment of air introduction is proportional to the operation time of the bipolar type ON / OFF switch 26.
Further, when it is desired to release air, similarly, the other one pole of the two-pole ON / OFF switch is turned ON, and the exhaust opening / closing solenoid valve 42 is opened and exhausted to the outside.
The middle point of the two-pole type ON / OFF switch is OFF, and automatically returns when the finger is released from the button.

Although the above has described the operation of the system of one airbag 5, the other airbags 5 can be arbitrarily expanded or contracted in the same manner.
When the supply of air from the main air tube 11 is stopped, the main line ON / OFF switch 33 is pressed to turn it OFF, and the open / close solenoid valve 52 is closed.
It should be noted that the operation is simple if the main line ON / OFF switches 32 and 33 are connected in series, with 32 for ON and 33 for OFF.

  Also, the power source air that adjusts the air bag in the back of the instrument is branched because the air used in handpieces such as air turbines and three-way syringes is permanently installed in dental treatment chairs. It can be easily connected to the airbag.

Partially broken and external perspective view of the backrest of a dental treatment chair equipped with an airbag Perspective and cross-sectional view of the backrest with airbag when inflated Perspective and cross-sectional view of the backrest with an airbag at the time of reduction External perspective view of air distributor External perspective view of the operation box Block diagram of dental treatment chair with airbag

Explanation of symbols

1: Dental treatment chair with air bag 2: Back plate of backrest 2a: Air gap 3: Back plate 4: Cushion material 5: Air bag 6: Front cover 7: Air tube 7 ': Air inlet / outlet 8: Distributor 9 : Operation box 10: Control signal line 11: Trunk air tube 11 ′: Distributor connector 12: Headrest 13: Seat 14: Footrest 15: Spitton 16: Light pole 17: Bracket table 18: Assistant table 19: Airbag surface Adhesive part 20: Adhesive part 20 'on the bottom surface of the airbag 21: Cushion material through hole 21: Fastener 22: Back plate connector 23: Back plate hooking part 24: Box side control line connector 25: Hanging hands 26-31: Bipolar ON / OFF switches 32, 33: Main line ON / OFF switches 34, 37, 40, 43, 46, 49: Air introduction adjustment Open / close solenoid valve 36, 39, 42, 45, 48, 51: Open / close solenoid valve 35, 38, 41, 44, 47, 50 for exhaust: Check valve 52: Open / close solenoid valve for air main line 53: Overpressure Air discharger 54: Power supply line 55: Air tube through hole

Claims (3)

In a dental treatment chair comprising a back plate with a curved backrest having a gap on the inside, a back plate and a cushioning material disposed on the back plate, and a front cover thereof,
Between the cushion material and the cover, a plurality of inflatable / reducible airbags are arranged in the left and right and upper, middle, and lower compartments,
The plurality of airbags have an air tube fixed at one corner, an open / close solenoid valve for air introduction and a check valve connected to an extension of the tube, and an open / close solenoid valve for exhaust,
Further, the main air tube and the branch air tube, the open / close solenoid valve and the check valve, the exhaust open / close solenoid valve, and the control signal line, which are disposed in the space below the back plate of the backrest, are accommodated. An air distributor,
A plurality of operation switches for individually controlling the open / close solenoid valves connected to the plurality of airbags, and an operation box for storing the operation switches of the main line open / close solenoid valves,
One side of the open / close solenoid valve for air introduction adjustment is connected in parallel to the main line of the air tube, and is led out from one end of the air distributor,
Furthermore, the main line of the air tube is connected to the air supply part of the dental treatment chair via the open / close solenoid valve for the main line,
The dental treatment chair is characterized in that the control signal line is a multi-core cable led out from one end of an air distributor and connected to an operation box. In a dental treatment chair with an airbag on the back,
The operation of the plurality of operation switches of the operation box individually allows each corresponding airbag to be inflated or contracted to adjust each portion of the backrest that comes into contact with the patient. Dental treatment chair as described. In a dental treatment chair with an airbag on the back,
3. The dental treatment chair according to claim 1, wherein the power source for adjusting the airbag is air that is permanently installed in the dental treatment chair.

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