JP2017131373A - Dental chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental chair capable of providing a patient with feeling of exhilaration and comfort, retaining a hygienic state, and avoiding a possibility of applying harmful effects to the function.SOLUTION: A dental chair 1 includes a seating-face seat 4 covered with air-impermeable upholstery 8-11, a backrest 5, a headrest 6, and a leg-rest 7. The upholstery 8-11 is sewn to form seams 20-23 having seamed parts 28-31 facing the outside and cylindrical parts 32-35 located in the inside. The dental chair includes: an air supply device 36 for supplying air to the cylindrical parts 32-35 of the seams 20-23; and an air amount control device 54 that controls operation of the air supply device 36 to supply air to the cylindrical parts 32-35 of the seams 20-23, with a patient seating thereon and release the air from the seamed parts 28-31.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a dental treatment chair, and more particularly to a dental treatment chair capable of improving the comfort of a seated patient.

When performing treatment in dentistry, a patient is seated on a dental treatment chair and treatment is performed. When a patient sits on a chair for a long period of time during treatment, heat and moisture may accumulate between the patient and the epidermis of the chair that the patient contacts, causing discomfort.
Therefore, a conventional dental treatment chair is a dental treatment chair composed of a seat covered with a breathable skin, and has an air flow path for releasing air into the seat, and the air released into the seat There is one that gives a refreshing feeling to a patient by discharging to the outside through a breathable exterior (Japanese Patent Laid-Open No. 2007-236867).
In addition, the device intended to improve the comfort of the person seated on the seat is a seat in which the seat is sheathed with a breathable skin and the air flow generated by the blower blower is seated by the seat blowing passage There is an air conditioner for a vehicle seat to be blown out of the vehicle (Japanese Patent Laid-Open No. 2000-142075).

JP 2007-236867 A JP 2000-142075 A

By the way, in the conventional dental treatment chairs, there are those that are not covered with a breathable skin, but are covered with a non-breathable skin, as in Patent Document 1 and Patent Document 2.
However, dental treatment chairs with a non-breathable epidermis cannot release air from the epidermis to the outside of the seat even if air is released into the seat, so the patient and the patient in contact with the epidermis There was a problem that heat and moisture accumulated in the meantime, and it was impossible to give the patient refreshment and comfort.

Further, the conventional dental treatment chair is covered with a non-breathable skin, and further, a seam having a seam portion facing the outside and a cylindrical portion located inside is formed by sewing the skin with a sewing thread. There is something.
However, the dental treatment chair in which the seam is formed on the epidermis has a problem that it becomes unsanitary because dust and dust are easily collected at the seam stitched portion and difficult to clean. Also, dental treatment chairs with seams formed on the epidermis have a problem in that if spilled gargle water flows into the stitched area of the seam, it will soak into the chair from the stitches of the sewing thread and adversely affect the chair function. there were.

  This invention can release heat and moisture between the patient and the epidermis to give the patient a refreshing feeling and comfort, keep dust and dust from accumulating on the seam of the epidermis, and keep hygiene. It is an object of the present invention to provide a dental treatment chair that can prevent water from penetrating into the chair from a seam and avoiding the possibility of adversely affecting the chair function.

  The present invention relates to a dental treatment chair composed of a seat surface sheet, a backrest, a headrest and a legrest, which are covered with a non-breathable skin, and a sewn portion facing the outside by sewing the skin and a cylindrical shape located inside. An air supply device that supplies air to the tubular portion of the seam, and supplies air to the tubular portion of the seam and discharges it from the stitched portion while the patient is seated Thus, an air amount control device for controlling the operation of the air supply device is provided.

The present invention supplies air to the tubular portion of the seam formed on the non-breathable epidermis while the patient is seated, and releases it from the stitched portion, thereby allowing ventilation between the seated patient and the epidermis in contact with the patient. The sex can be improved. For this reason, this invention can escape heat and moisture with air, and can give a patient a refreshing feeling and comfort.
Further, according to the present invention, dust and dirt accumulated in the stitched portion of the seam can be blown off by air, so that dust and dirt can be hardly collected in the seam, and a hygienic state can be maintained. Furthermore, when the patient spills water and flows into the seam seam, the water can be blown away with air, so that the water can be prevented from penetrating into the chair and the chair function can be adversely affected. The fear of giving can be avoided.

FIG. 1 is a cross-sectional view of a dental treatment chair. (Example) FIG. 2 is a plan view of the dental treatment chair. (Example) FIG. 3 is an enlarged plan view of the seam. (Example) FIG. 4 is an enlarged sectional view of the seam. (Example) 5A is a plan view of the seam in a state where the stitching portion is closed, and FIG. 5B is a plan view of the seam in a state where the stitching portion is opened by air. (Example) FIG. 6 is a block diagram of the air amount control device. (Example) FIG. 7 is an enlarged cross-sectional view of a seam showing a modification. (Modification)

  Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of the present invention. 1 and 2, a dental treatment chair 1 includes a pedestal 2, a seat surface sheet 4 supported on the pedestal 2 by a support arm 3, and a backrest 5 that supports the back of a patient seated on the seat surface sheet 4. And a headrest 6 that supports the head of the patient and a legrest 7 that supports the leg of the patient. In the treatment, the dental treatment chair 1 can tilt the backrest 5, the headrest 6, and the legrest 7 with respect to the seat surface sheet 4 to make it easy to treat the patient.
In the dental treatment chair 1, the front side of the seat surface sheet 4, the backrest 5, the headrest 6, and the legrest 7 in contact with the patient is covered with non-breathable skins 8, 9, 10, and 11, respectively. The back sides of the seat surface sheet 4, the backrest 5, the headrest 6, and the legrest 7 are respectively covered with non-breathable covers 12, 13, 14, and 15.
Between the skin 8 and the cover 12 of the seat 4, between the skin 9 and the cover 13 of the backrest 5, between the skin 10 and the cover 14 of the headrest 6, and between the skin 11 and the cover 15 of the legrest 7. Cushions 16, 17, 18, and 19 are respectively provided in the interior.
A plurality of seams 20, 21, 22, and 23 are formed on the skin 8 of the seat 4, the skin 9 of the backrest 5, the skin 10 of the headrest 6, and the skin 11 of the legrest 7, respectively. The stitches 20 to 23 are formed by stitching portions in which the outer skins 8 to 11 are recessed inward with the sewing threads 24 to 27, so that the linear stitching portions 28 to 31 facing the outside of the outer skins 8 to 11 as shown in FIG. As shown in FIG. 4, it forms in the shape which has the cylindrical parts 32-35 located inside rather than the outer skins 8-11.

The dental treatment chair 1 includes an air supply device 36 that supplies air to the cylindrical portions 32 to 35 of the seams 20 to 23. The air supply device 36 includes a ventilation mechanism 37, air passages 38 to 41, and flow rate control valves 42 to 45.
The ventilation mechanism 37 includes a heating unit 46 that generates heated air, a cooling unit 47 that generates cooled air, and a blower unit that supplies the air generated by the heating unit 46 and the cooling unit 47. 48 and an air passage 49. The ventilation mechanism 37 supplies either the air heated by the heating unit 46 or the air cooled by the cooling unit 47 to the ventilation path 49 by the blowing unit 48.
The air passages 38 to 41 are connected on the upstream side to the ventilation passage 49 of the ventilation mechanism 37 via the flow control valves 42 to 45, respectively. The air passages 38 to 41 are connected to the cylindrical portions 32 to 35 of the seams 20 to 23 on the downstream side, respectively. The air passages 38 to 41 supply the air supplied by the ventilation mechanism 37 to the cylindrical portions 32 to 35 of the seams 20 to 23.
As shown in FIG. 5A, the stitches 28 to 31 are closed in the state where the air is not supplied to the cylindrical portions 32 to 35. As shown in FIG. 5B, when the seams 20 to 23 are supplied with air to the cylindrical portions 32 to 35, the stitched portions 28 to 31 between the sewing threads 24 to 27 are opened by the air pressure, Release air to the outside.
The flow control valves 42 to 45 are arranged at the connection portion between the air passages 38 to 41 and the air passage 49. The flow control valves 42 to 45 control the flow rates of air supplied from the air passages 38 to 41 to the cylindrical portions 32 to 35 of the seams 20 to 23, respectively.

The dental treatment chair 1 includes a scent mixing device 50. The scent mixing device 50 includes a scent tank 51, a scent passage 52, and a scent mixing valve 53.
In the scent tank 51, scent components having a deodorizing effect and a healing effect are stored. The scent passage 52 has an upstream side connected to the scent tank 51 and a downstream side connected to the ventilation path 49 of the ventilation mechanism 37. The scent mixing valve 53 is disposed in the scent passage 52. The scent mixing valve 53 controls the supply / stop of the scent component mixed with the warmed air or the cooled air flowing through the air passage 49.

The dental treatment chair 1 includes an air amount control device 54 that controls the operation of the air supply device 36 and the scent mixing device 50.
The air amount control device 54 includes a pressure sensor 55 for detecting the seating of the patient, a temperature sensor 56 for detecting the temperature of the epidermis 8 of the seat surface sheet 4 in contact with the patient, and the temperature of the epidermis 9 of the backrest 5 in contact with the patient. A temperature sensor 57 for detecting, a humidity sensor 58 for detecting the humidity of the skin 8 of the seat 4 on which the patient contacts, a humidity sensor 59 for detecting the humidity of the skin 9 of the backrest 5 on which the patient contacts, and a pressure sensor 55 And a control means 60 for inputting detection signals from the temperature sensors 56 and 57 and the humidity sensors 58 and 59.
The pressure sensor 55 is disposed on the skin 8 of the seat sheet 4. The temperature sensors 56 and 57 and the humidity sensors 58 and 59 are a combination of the temperature sensor 56 and the humidity sensor 58, and the temperature sensor 57 and the humidity sensor 59 as another set. It arrange | positions to the skin 8 of the sheet | seat 4, and the skin 9 of the backrest 5, respectively.
As shown in FIG. 6, the pressure sensor 55, the temperature sensors 56 and 57, and the humidity sensors 58 and 59 are connected to the input side of the control means 60. On the output side of the control means 60, the flow control valves 42 to 45 of the air supply device 36, the heating unit 46, the cooling unit 47, and the air blowing unit 48 are connected, and the scent mixing valve 53 of the scent mixing device 50 is connected. . Further, a changeover switch 61 for setting the operation of the air supply device 36 and a scent switch 62 for setting the operation of the scent mixing device 50 are connected to the input side of the control means 60.
The changeover switch 61 selects the operation of the air supply device 36 as “warm” for supplying warmed air, “cool” for supplying cooled air, and warmed air or cooled air. It is set to either “automatic” to be supplied automatically. The scent switch 62 sets the operation of the scent mixing valve 53 of the scent mixing device 50 to either “ON” for supplying the scent component or “OFF” for stopping the supply of the scent component.

The control means 60 includes a switch determination unit 63, a pressure determination unit 64, a temperature determination unit 65, a humidity determination unit 66, and an automatic control determination unit 67.
The switch determination unit 63 determines what setting the changeover switch 61 and the scent switch 62 are operated on. The pressure determination unit 64 determines whether the pressure detected by the pressure sensor 55 is a value indicating the seating of the patient.
The temperature determination unit 65 determines whether the temperature detected by the temperature sensors 56 and 57 is a value for driving (ON) or stopping (OFF) the heating unit 46 and the cooling unit 47.
The humidity determination unit 66 determines whether the humidity detected by the humidity sensors 58 and 59 is a value for driving (ON) or stopping (OFF) the heating unit 46 and the cooling unit 47. Further, the humidity determination unit 66 determines what value the humidity detected by the humidity sensors 58 and 59 is for setting the air flow rate of the air blowing unit 48.
When the setting of the changeover switch 61 is “automatic”, the automatic control determination unit 67 determines the flow rate of the air supply device 36 based on the temperature detected by the temperature sensors 56 and 57 and the humidity detected by the humidity sensors 58 and 59. It is determined how to operate the control valves 42 to 45, the heating unit 46, the cooling unit 47, and the air blowing unit 48.

The air amount control device 54 allows the patient to treat the dental treatment chair 1 based on the values detected by the pressure sensor 55, the temperature sensors 56 and 57, and the humidity sensors 58 and 59 according to the setting of the changeover switch 61 by the control means 60. In the state of being seated, the heated or cooled air supplied by the ventilation mechanism 37 of the air supply device 36 is supplied to the cylindrical portions 32 to 35 of the seams 20 to 23 of the dental treatment chair 1. Thus, the operations of the flow control valves 42 to 45 are controlled so as to be discharged from the stitching portions 28 to 31.
Further, the air amount control device 54 controls the scent component stored in the scent tank 51 of the scent mixing device 50 in a state where the patient is seated on the dental treatment chair 1 according to the setting of the scent switch 62 by the control means 60. The operation of the scent mixing valve 53 is controlled so as to be mixed with warmed air or cooled air flowing through the air passage 49 and discharged from the stitching portions 28 to 31.

In the control of the air amount by the air amount control device 54, the air supply device 36 and the scent mixing device 50 are controlled as follows.
When the air amount control device 54 determines the pressure detected by the pressure sensor 55 by the pressure determination unit 64 and detects that the patient is seated on the dental treatment chair 1 based on the pressure value detected by the pressure sensor 55, the air supply device 54 supplies air. The operation of the device 36 and the scent mixing device 50 is started.

The air amount control device 54 determines the setting of the changeover switch 61 by the switch determination unit 63, and when the changeover switch 61 is set to "warm", the flow control valves 42 to 45, the heating unit 46, and the blower unit. 48 is operated.
The air supply device 36 feeds the air heated by the heating unit 46 and the blower unit 48, controls the flow rate of the air by the flow rate control valves 42 to 45, and the dental treatment chair by the air passages 38 to 41. It supplies to the cylindrical parts 32-35 of one seam 20-23. As shown in FIG. 5 (B), the heated air supplied to the cylindrical portions 32 to 35 opens the stitching portions 28 to 31 between the sewing threads 24 to 27 by the pressure of the air, and opens the portions. To the outside.
The air amount control device 54 controls the flow rate control valves 42 to 45, the heating unit 36, and the air blowing unit 48 based on the values detected by the temperature sensors 56 and 57 and the values detected by the humidity sensors 58 and 59. By operating it, it is possible to control the temperature and flow rate of the heated air discharged from the open portion of the stitching portions 28 to 31.

The air amount control device 54 determines the setting of the changeover switch 61 by the switch determination unit 63, and when the changeover switch 61 is set to “cold”, the flow control valves 42 to 45 of the air supply device 36 and the cooling unit. 47 and the blower 48 are operated.
The air supply device 36 feeds the air cooled by the cooling unit 47 and the air blowing unit 48, controls the flow rate of air by the flow rate control valves 42 to 45, and the dental treatment chair 1 by the air passages 38 to 41. It supplies to the cylindrical parts 32-35 of the seams 20-23. As shown in FIG. 5B, the cooled air supplied to the cylindrical portions 32 to 35 opens the stitching portions 28 to 31 between the sewing threads 24 to 27 by the pressure of the air, and starts from the opened portion. Released to the outside.
The air amount control device 54 operates the flow rate control valves 42 to 45, the cooling unit 37, and the air blowing unit 48 based on the values detected by the temperature sensors 56 and 57 and the values detected by the humidity sensors 58 and 59. By doing so, it is possible to control the temperature and flow rate of the cooled air discharged from the open portion of the stitching portions 28 to 31.

The air amount control device 54 determines the setting of the changeover switch 61 by the switch determination unit 63. When the changeover switch 61 is set to “automatic”, the flow control valves 42 to 45, the heating unit 46, and the cooling unit are set. 47 and the blower 48 are operated.
The air supply device 36 selectively supplies the air heated by the heating unit 46 and the blowing unit 48 or the air cooled by the cooling unit 47 and the blowing unit 48, and is controlled by the flow control valves 42 to 45. The flow rate of air is controlled and supplied to the cylindrical portions 32 to 35 of the seams 20 to 23 of the dental treatment chair 1 through the air passages 38 to 41. As shown in FIG. 5B, the heated or cooled air supplied to the cylindrical portions 32 to 35 opens the stitching portions 28 to 31 between the sewing threads 24 to 27 by the pressure of the air. And released from the open part.
At this time, since the changeover switch 61 is set to “automatic”, the air amount control device 54 has the seam 20 based on the values detected by the temperature sensors 56 and 57 and the values detected by the humidity sensors 58 and 59. The flow rate control valves 42 to 45, the heating unit 36, and the cooling unit 37 are set so that the temperature and flow rate of the heated air or the cooled air discharged from the stitching units 28 to 31 of ˜23 become the target values. Feedback control of the operation with the blower 38 is performed.

  When the change-over switch 61 is set to “automatic”, the air amount control device 54 uses the values detected by the temperature sensors 56 and 57 and the values detected by the humidity sensors 58 and 59 to Alternatively, the air supply device 36 is operated as follows so that the temperature and flow rate of the cooled air become the target values.

1. Temperature detected by temperature sensors 56 and 57 1). When the temperature is 15 ° C. or lower, the heating unit 46 is operated (ON) to warm the air. The operation of the heating unit 46 is controlled so that the temperature of the air does not exceed 30 ° C.
2). When the temperature is 25 ° C. or higher, the cooling unit 47 is operated (ON) to cool the air. The operation of the cooling unit 47 is controlled so that the temperature of the air does not fall below 15 ° C.
3). When the temperature is in the range of 16 to 24 ° C., the operation of the heating unit 46 and the cooling unit 47 is stopped (OFF).

2. Humidity detected by humidity sensors 58 and 59 1). When the humidity is 60% or more, the blower 48 is operated (ON) so as to maximize the blown amount.
2). When the humidity is less than 60%, the blower 48 is operated (ON) so as to reduce the blown air volume in accordance with the humidity drop.

The air amount control device 54 determines the setting of the changeover switch 61 by the switch determination unit 63, and operates (ON) the scent mixing valve 53 when the scent switch 61 is set to “ON”.
The scent mixing device 50 supplies the scent component stored in the scent tank 51 to the air passage 49 by the operation (ON) of the scent mixing valve 53 and mixes it with the heated air or the cooled air. The heated air containing the scent component or the cooled air containing the scent component is discharged from the stitched portions 28 to 31 of the seams 20 to 23 of the dental treatment chair 1 through the air passages 38 to 41.

Thus, the dental treatment chair 1 supplies air to the cylindrical portions 32 to 35 of the seams 20 to 23 formed on the non-breathable skins 8 to 11 while the patient is seated by the air supply device 36, By opening and releasing the stitched portions 28 to 31, the air permeability between the seated patient and the epidermis 8 to 11 in contact with the patient can be improved. For this reason, the dental treatment chair 1 can release heat and moisture with air, and can give the patient a refreshing feeling and comfort.
In addition, since the dental treatment chair 1 can blow off dust and dirt accumulated in the stitched portions 28 to 31 of the seams 20 to 23 with the discharged air, dust and dirt are collected in the stitched portions 28 to 31 of the stitches 20 to 23. Garbage can be made difficult to collect and hygiene can be maintained. Further, when the patient spills water and flows into the stitching portions 28 to 31 of the seams 20 to 23, the dental treatment chair 1 can blow off the water that has flowed in with the discharged air, so that It is possible to prevent the inside of the chair from being soaked and to avoid the possibility of adversely affecting the chair function.
Further, the dental treatment chair 1 mixes the scent component with the heated air or the cooled air by the scent mixing device 50, and the heated air containing the scent component or the cooled air containing the scent component. By releasing from the stitched portions 28 to 31 of the seams 20 to 23, it is possible to erase the bad odor and to heal the patient, so that it is possible to give the patient more refreshing feeling and comfort.

In the above-described embodiment, as shown in FIG. 4, the stitches 20 to 23 formed by placing the stitched portions 28 to 23 shallowly inside the skins 8 to 11 are illustrated, but as shown in FIG. 7, the stitches are stitched. It is also possible to make the seams 20 to 23 formed by locating the portions 28 to 23 deep inside the skins 8 to 11.
The seams 20 to 23 shown in FIG. 7 have the space portions 68 to 71 having a shape extending in a tapered shape outside the stitching portions 28 to 31 by positioning the stitching portions 28 to 31 deep inside the skins 8 to 11. Have. As shown in FIG. 5 (B), the air supplied to the cylindrical portions 32 to 35 opens the stitching portions 28 to 31 between the sewing threads 24 to 27 by the pressure of the air, and the outside of the stitching portions 28 to 31. It is expanded by the spaces 68 to 71 and discharged to the outside.
Accordingly, in the dental treatment chair 1 in which the seams 20 to 23 shown in FIG. 7 are formed, in addition to the effects shown in the above-described embodiment, air is spread outside by the space portions 68 to 71 having a tapered shape. Since it can be released, the breathability can be further improved to give the patient a refreshing feeling and comfort.

  The present invention can provide a refreshing feeling and comfort to a patient sitting on a dental treatment chair, can maintain the hygiene of the dental treatment chair, and may adversely affect the chair function of the dental treatment chair. Therefore, the present invention can be applied not only to a dental treatment chair but also to a chair on which a person is seated.

DESCRIPTION OF SYMBOLS 1 Dental treatment chair 4 Seat sheet 5 Backrest 6 Headrest 7 Legrest 8-11 Epidermis 12-15 Cover 16-19 Cushion 20-23 Seam 28-31 Stitching part 32-35 Cylindrical part 36 Air supply device 37 Ventilation Mechanism 38-41 Air passage 42-45 Flow control valve 46 Heating part 47 Cooling part 48 Blower part 49 Ventilation path 50 Aroma mixing device 51 Scent tank 52 Scent passage 53 Scent mixing valve 54 Air quantity control device 55 Pressure sensor 56/57 Temperature sensor 58/59 Humidity sensor 60 Control means 61 Changeover switch 62 Scent switch 63 Switch judgment part 64 Pressure judgment part 65 Temperature judgment part 66 Humidity judgment part 67 Automatic control judgment part

Claims (3)

  A dental treatment chair composed of a seat sheet, a backrest, a headrest, and a legrest that is sheathed with a non-breathable skin, and has a stitched portion that stitches the skin and faces the outside, and a cylindrical portion that is located inside. An air supply device that forms a seam and supplies air to the tubular part of the seam, and supplies the air to the tubular part of the seam and releases the air from the stitched part in a state where a patient is seated. A dental treatment chair comprising an air amount control device for controlling the operation of a supply device.   The air supply device includes a ventilation mechanism that supplies either heated air or cooled air, an air passage that supplies the air supplied by the ventilation mechanism to the tubular portion of the seam, The dental treatment chair according to claim 1, further comprising a flow rate control valve that controls a flow rate of air supplied by the air passage.   The air amount control device includes: a pressure sensor that detects sitting of a patient; a temperature sensor that detects a temperature of the epidermis in contact with the patient; a humidity sensor that detects humidity of the epidermis in contact with the patient; the pressure sensor; Control means for inputting a detection signal of the temperature sensor and the humidity sensor, and the control means starts the operation of the air amount control device when detecting the seating of the patient by the pressure detected by the pressure sensor, Based on the temperature detected by the temperature sensor and the humidity detected by the humidity sensor, the air supplied by the ventilation mechanism is supplied to the tubular portion of the seam through the air passage and discharged from the stitching portion. The dental treatment chair according to claim 1, wherein the flow control valve is controlled.

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