JP2000152965A - Dental chair unit controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device with good appearance and excellent safety without directivity like the optical communication system and necessity of wiring cables connecting foot controller and chair unit main body on the floor in a controller for posture control of a chair in a dental chair unit and a controller for a plurality of instruments. SOLUTION: This controller has a foot controller with a flat transmitting/ receiving antenna on the bottom face, and a control drive circuit of the flat transmitting/receiving antenna, dental chair unit, and instruments 22 and equipped with a mat 3 connected to the chair unit by a cable 20. The controller is laid on the mat 3 and operated to enable to control the mutual transmitting/ receiving antennas in a non-contact, proximate, and facing communication mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling a posture of a chair of a chair unit and a method of controlling a plurality of instruments for dental treatment. Related to the device.

[0002]

2. Description of the Related Art In a chair unit for dental treatment, the chair unit body and a plurality of instruments are controlled by a foot controller by using an on / off control switch and a variable resistor to adjust the control output. A chair operating lever and a control pedal for operating these were provided in the controller. The foot controller is mounted on the floor of the examination room, and is operated by a practitioner using a foot to displace the foot controller. In addition, an on / off switch for connecting the foot controller and the chair unit body and a signal output for the instrument crawl on the floor in a state where a plurality of signal lines are bundled and housed in a tube. I was doing it. However, the tube may cause the practitioner or patient to catch or trip on the foot,
Further, there is a possibility that the signal line in the tube may be damaged by stepping on the tube or being pulled when the practitioner moves the foot controller, and there is also a problem that the appearance is not good.

[0003] On the other hand, a transmitter / receiver of an optical modulation signal communication system using infrared rays or the like is mounted on a foot controller and a chair unit to enable control. However, since the optical communication system has directivity, Regardless of the treatment position of the practitioner, the direction of the light emitting element of the foot controller must be limited to a certain range, or one or both of the light emitting element side and the light receiving element side must be arranged in order to widen the communication direction. No. In the case of a pair of light-emitting / light-receiving elements, the practitioner must secure a constant light-emitting element direction of the foot controller, so that not only is the medical treatment inconvenient, but there is also a risk of erroneous operation. In addition, arranging a plurality of light emitting elements or light receiving elements becomes mechanically complicated, and at the same time, the circuit and mechanism become complicated, such as the necessity of taking measures for preventing malfunction with another adjacent chair unit. There was a possibility.

[0004]

SUMMARY OF THE INVENTION Accordingly, in order to solve the problems of the prior art, the present invention does not require the tube connecting the foot controller and the chair unit main body to crawl on the floor surface, and is used in an optical communication system. The present invention provides a dental chair unit control device which eliminates directivity, is excellent in cost and safety, and has good aesthetic appearance.

[0005]

Means for Solving the Problems The present inventor has solved this problem by the following means as a result of intensive studies in view of the above. (1) In a dental chair unit control device for controlling the posture of a chair and controlling the driving of a plurality of instruments, (a) a foot controller having a flat transmitting / receiving antenna on a bottom portion, and (b) flat transmitting / receiving. (C) a control signal cable interposed between the mat and the chair unit main body; and a mat provided with a posture control of the antenna and the chair, and a plurality of instrument control drive circuits.
(D) non-contact signal communication without a control signal cable between the foot controller and the mat;
A dental chair unit control device, characterized in that: (2) The (d) non-contact signal communication between the (a) foot controller and the (b) mat is a non-contact close-facing communication method in which the foot controller is placed on a mat for communication. The (a) foot controller and (b) the flat transmission / reception antennas disposed between the mats are caused to face each other to generate an electromagnetic induction phenomenon, and a plurality of chair operation signals transmitted from the foot controller and The control unit controls the chair unit via the control signal cable by operating a posture control of the chair of the mat and a plurality of instrument drive control circuits in accordance with a displacement signal of the control pedal. The control device for a dental chair unit according to the above mode (1).

(3) (a) The foot controller is replaced by (b)
It is placed on a mat, and the flat transmitting and receiving antennas respectively arranged are closely opposed to each other, and the entire DC power consumed inside the foot controller is generated by electromagnetic induction electromotive force transmitted from the mat. The dental chair unit control device according to the above mode (1) or (2). (4) a transmitting / receiving antenna having a flat bottom surface, a filter for selecting a predetermined high frequency received by the transmitting / receiving antenna, a power receiving circuit for detecting and amplifying, a power supply circuit for generating DC power based on an output signal of the foot controller, and ,
A CPU / control signal encoder that encodes a plurality of foot control switch signals and a displacement signal of the control pedal into a digital signal, and an amplification / transmission circuit that modulates with the CPU / control signal encoder output signal and outputs the modulated carrier wave. ,
The dental chair unit control according to any one of (1) to (3), wherein the modulated carrier wave output from the amplifying / transmitting circuit is output as an electromagnetic wave from the flat transmitting / receiving antenna. apparatus.

(5) The mat is a flat, plate-shaped non-magnetic material, and a DC power consumed in the mat by power transmitted from the chair unit body fixed inside and a predetermined power for transmitting power to the foot controller. A power supply circuit for generating a high frequency, a power transmission circuit for modulating at a predetermined high frequency generated by the power supply circuit and outputting as a modulated carrier, and a flat transmitting and receiving antenna for outputting the power transmission circuit output modulated carrier as an electromagnetic wave; A band filter for detecting the modulated carrier received by the transmitting / receiving antenna and separating the modulated carrier into frequencies for respective control signals, a decoder for decoding and identifying the output signal, a chair unit main body and a plurality of dental treatments by the decoder output signals. ON / OFF control circuit for controlling the instrument for use, and a D / A conversion circuit for generating a displacement signal of the control pedal. And, CPU that controls each circuit
The dental chair unit control device according to any one of items (1) to (4), comprising:

(6) The dental chair unit main body receives the plurality of on / off control circuit output signals and the D / A conversion circuit output signals transmitted by the signal lines from the mat, and thereby the dental chair unit main body. The dental chair unit control device according to any one of (1) to (5), wherein the posture control of the chair and the drive control of a plurality of instruments for dental treatment are performed. (7) The dental chair unit control device according to any one of (1) to (6), wherein the mat is made of non-conductive rubber or resin. (8) The entire surface of the mat top surface and the bottom surface of the foot controller are flat surfaces.
(7) The dental chair unit control device according to any one of the above (7). (9) One or more concave grooves are engraved on the upper surface of the mat, and a convex protrusion that fits into the concave groove of the mat is provided on the bottom of the foot controller. The dental chair unit control device according to any one of claims (1) to (7).

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration and operation of a dental chair unit control apparatus according to an embodiment of the present invention will be described below with reference to the drawings. 1 is an external perspective view of a dental chair unit of the present invention, FIG. 2 is an external view of a foot controller having a convex projection, FIG. 3 is an external view of a mat having a concave groove, and FIG.
1 is a circuit block diagram of a dental chair unit control device of the present invention. 1 to 4, 1 is a chair unit main body, 2 is a foot controller, 3 is a mat, 4 is a chair operating lever, 5 is a control pedal, 6 is a CPU / control signal encoder, 7 is an amplification / transmission circuit, and 8 is A transmitting / receiving antenna, 9 is a power receiving circuit, 10 is a power supply circuit, 11 is a transmitting / receiving antenna, 12 is a band filter, 13 is a decoder, 14
Is an on / off control circuit, 15 is a D / A conversion circuit, 16 is a CPU, 17 is a power supply circuit, 18 is a power transmission circuit, 19 is a chair / instrument control drive circuit, 20 is a cable, 21 is a chair, 22 Denotes an instrument, 23 denotes a concave groove, and 24 denotes a convex protrusion.

As shown in FIG. 1, the mat 3 is placed on the floor around the chair unit main body 1 at a position where the practitioner can easily operate. In addition, the mat 3 is plate-shaped and is semi-fixedly installed at the predetermined position, but the position can be moved. Further, the shape and size of the mat 3 can be freely manufactured and selected. And the mat 3
Is connected to the chair unit main body 1 by a cable 20, but the length of the cable 20 is short and does not move when the mat 3 is installed. The foot controller 2 is placed on the mat 3 and communicates with the mat 3 wirelessly in a cordless manner. Therefore,
The user can freely move and operate within the range of the mat 3.

Next, the operation of the dental chair unit control device of the present invention will be described with reference to the block diagram of FIG. Mat 3
The power supply circuit 17 receives power from the chair unit body 1, supplies stabilized DC power consumed in the mat 3, amplifies the basic clock frequency of the CPU 16, and transmits the amplified basic clock frequency to the power supply. The modulated carrier wave is transmitted from the loop transmitting / receiving antenna 11 by the circuit 18 and received by the loop transmitting / receiving antenna 8 provided on the bottom of the foot controller 2. The modulated carrier wave received by the transmission / reception antenna 8 of the foot controller 2 is separated by a high-pass filter and detected and amplified by a power receiving circuit 9.
To reproduce the basic clock frequency, and rectify the basic clock frequency by the power supply circuit 10 and use the stabilized DC power as a power source to be consumed in the foot controller 2.

The foot controller 2 includes a plurality of chair operating levers 4 and a control pedal 5, and uses a basic clock reproduced by the aforementioned power receiving circuit 9 as a timing signal.
The switching signal of the chair operation lever 4 and the displacement signal of the control pedal 5 are encoded into digital signals by the U / control signal encoder 6. The output signal of the CPU / control signal encoder 6 is modulated by the amplification / transmission circuit 7 and output as a modulated carrier wave, and is output as an electromagnetic wave from the transmission / reception antenna 8.

Further, the mat 3 has a transmitting / receiving antenna 11
The modulated carrier wave received by the band filter 12 is detected by the band filter 12,
Each control signal is separated into different frequencies. Each of the separated control signals is restored by the decoder 13 to the above-mentioned switching signal of the chair operation lever 4 and the digital signal of the displacement amount signal of the control pedal 5, and the on / off control circuit 14 reproduces the switching signal of the chair operation lever 4. Then, the D / A conversion circuit 15 reproduces the displacement amount signal of the control pedal 5. The switching signal of the chair operation lever 4 and the displacement signal of the control pedal 5 reproduced by the on / off control circuit 14 and the D / A conversion circuit 15 are sent to the instrument control drive circuit 19 of the chair unit body 1 via the cable 20. Sent out, chair 2
The posture control of one chair and the control of a plurality of instruments for dental treatment 22 are performed. The CPU 16 supplies a basic clock signal and a clock signal necessary for all the circuits of the mat 3 and controls the computer.

The aforementioned loop-shaped transmitting / receiving antenna 11 of the mat 3 and the foot controller 2 mounted on the mat 3
The transmission / reception wave power of the non-contact, proximity-facing communication system constituted by the loop-shaped transmission / reception antenna 8 provided on the bottom surface of the wireless communication device is radio wave power at which transmission and reception are cut off when the foot controller 2 is separated from the mat 3. In order to prevent erroneous operation against extraneous radio waves or impulse noise, a predetermined continuous pulse is transmitted and received when no operation is performed, and two or more waves are used for one operation (one function) when the chair operation lever or the like is operated.
-The control signal encoder 6 responds to encoding. 2 and 3, a convex protrusion 24 protruding from the bottom surface of the foot controller 2 and one or a plurality of concave grooves 23 engraved on the upper surface of the mat 3 are provided on the mat 3. When the practitioner operates the foot controller 2 with his / her foot, the practitioner can rotate the foot controller 2 right and left around the projection 24 and move the foot controller 2 along the concave groove 23. The controller 2 can be freely selected in a position and a direction corresponding to the medical treatment posture of the practitioner.

[0015]

According to the present invention, the following excellent effects are exhibited. 1. According to the invention of claim 1 of the present invention, in a dental chair unit control device for performing posture control of a chair, drive control of a plurality of instruments, and the like, a foot controller including a flat transmitting / receiving antenna on a bottom surface portion; A flat transmitting / receiving antenna and a posture control of a chair, a mat provided with a plurality of instrument control driving circuits, a control signal cable interposed between the mat and the chair unit main body, and the foot controller and Since non-contact signal communication is not provided with a control signal cable between the mat and the mat, the operation control of the cordless chair unit by the foot controller can be executed with a simple structure and with reliable operation without malfunction. According to the second aspect of the present invention, the non-contact signal communication between the foot controller and the mat is a non-contact close-facing communication method in which the foot controller is placed on a mat and communicates. The flat transmission / reception antennas disposed between the mats are caused to closely face each other to generate an electromagnetic induction phenomenon, and a plurality of chair operation signals transmitted from the foot controller and a displacement amount signal of the control pedal are used to generate the electromagnetic induction phenomenon. The chair unit is controlled via the control signal cable by operating the chair attitude control and a plurality of instrument drive control circuits, so that it is omnidirectional and can be controlled by transmitting and receiving weak radio wave power. Therefore, the placement direction and position of the foot controller required for dental treatment can be freely selected, and the foot control If La is disengaged from on the mat, also not activated by operating the foot controller by mistake,
In addition, even if the direction of the foot controller is directed to another chair unit, the chair controller does not face or approach the chair unit, and furthermore, since the radio wave power is weak, it does not malfunction and a safe and reliable operation can be performed. According to the third aspect of the present invention, the foot controller is placed on the mat, and the flat transmitting and receiving antennas respectively arranged are closely opposed to each other to generate an electromagnetic induction phenomenon. All DC power consumed inside the foot controller can be generated. Therefore, the foot controller does not require a battery or an external power supply, is compact and easy to handle, and has a low running cost.

4. According to the invention of claim 4, since the foot controller has various communication circuits for the mat and the operation range is limited on the mat, communication by radio waves can be performed in a state where the surroundings are shielded and at a short distance. Can be performed without contact. 5. According to the fifth aspect of the present invention, since the mat has various circuits for controlling the chair unit and can be installed on a wide range of floors, a position suitable for the operation of the operator can be selected. 6. According to the invention of claim 6, the chair unit main body includes:
Controlling the posture of the chair in the chair unit body and controlling and driving multiple dental treatment instruments by receiving the output signal transmitted by the signal line from the mat makes the connection between the mat and the chair unit simple and reliable. The chair unit is easy to control.

[7] According to the seventh aspect of the present invention, since the mat is made of non-conductive rubber or resin, there is almost no attenuation of radio waves, and transmission and reception can be performed with weak radio power. 8. According to the invention of claim 8, since the entire upper surface of the mat and the entire bottom surface of the foot controller are flat surfaces, the practitioner can freely select the most appropriate position and direction of the foot controller for the medical treatment posture. it can. 9. According to the ninth aspect of the present invention, the foot controller is formed by fitting one or a plurality of concave grooves formed on the upper surface of the mat with the convex protrusions provided on the bottom surface of the foot controller. The foot controller can be rotated or moved around the mating point without detaching on the mat even if moved by, and the practitioner can select an appropriate position and direction for the medical treatment posture.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a dental chair unit of the present invention.

FIG. 2 is an external view of a foot controller having a convex protrusion.

FIG. 3 is an external view of a mat having concave grooves.

FIG. 4 is a circuit block diagram of the dental chair unit control device of the present invention.

[Explanation of symbols]

1: Chair unit body 2: Foot controller 3: Mat 4: Chair operation lever 5: Control pedal 6: CPU / control signal encoder 7: Amplification / transmission circuit 8: Transmission / reception antenna 9: Power reception circuit 10: Power supply circuit 11: Transmission / reception Antenna 12: Band filter 13: Decoder 14: On / off control circuit 15: D / A conversion circuit 16: CPU 17: Power supply circuit 18: Power transmission circuit 19: Chair instrument control drive circuit 20: Cable 21: Chair 22: instrument 23: concave groove 24: convex protrusion

Claims (9)

[Claims] 1. A dental chair unit control device for controlling a posture of a chair, controlling driving of a plurality of instruments, and the like, comprising: (a) a foot controller having a flat transmitting / receiving antenna on a bottom surface; (C) a control signal cable interposed between the mat and the chair unit main body; and (d) a control signal cable provided between the mat and the chair unit main body. A non-contact signal communication without a control signal cable provided between the foot controller and the mat, the dental chair unit control device. 2. The (d) non-contact signal communication between the (a) foot controller and the (b) mat is performed by a non-contact proximity facing communication method in which a foot controller is placed on a mat for communication. A plurality of chair operations transmitted from the foot controller by generating an electromagnetic induction phenomenon by causing (a) the foot controller and (b) the respective flat transmitting / receiving antennas disposed between the mats to be in close proximity to each other; With the signal and the displacement signal of the control pedal,
The dental chair according to claim 1, wherein the posture control of the mat chair and a plurality of instrument drive control circuits are operated to control the chair unit through the control signal cable. Unit control device. 3. A foot controller is mounted on (b) a mat, and flat transmitting and receiving antennas respectively arranged on the mat are closely opposed to each other, and the foot controller is controlled by electromagnetically induced electromotive force transmitted from the mat. The dental chair unit control device according to claim 1 or 2, wherein all DC power consumed internally is generated. 4. A foot controller comprising: a transmitting / receiving antenna having a flat bottom surface; a filter for selecting a predetermined high frequency received by the transmitting / receiving antenna; a power receiving circuit for detecting / amplifying; A power supply circuit to be generated, and a CPU for encoding a plurality of foot control switch signals and a control pedal displacement signal into digital signals.
A control signal encoder, and an amplification / transmission circuit that modulates the output signal of the CPU / control signal encoder and outputs the modulated carrier wave, and outputs the modulated carrier wave output from the flat transmission / reception antenna as an electromagnetic wave. The dental chair unit control device according to any one of claims 1 to 3, wherein: 5. (b) The mat is a flat plate-shaped non-magnetic material, and a DC power source is consumed in the mat by electric power transmitted from a chair unit body fixed inside, and power is transmitted to the foot controller. A power supply circuit for generating a predetermined high frequency for performing the modulation, a power transmission circuit for modulating with a predetermined high frequency generated by the power supply circuit and outputting the modulated carrier as a modulated carrier, and a flat panel for outputting the modulated carrier output from the power transmission circuit as an electromagnetic wave. A transmitting and receiving antenna, a band filter for detecting a modulated carrier received by the transmitting and receiving antenna and classifying the modulated carrier into a frequency for each control signal, a decoder for decoding and identifying the output signal, a chair unit body by the decoder output signal, On / off control circuit for controlling a plurality of dental treatment instruments, and D / A for generating a displacement signal of a control pedal The dental chair unit control device according to any one of claims 1 to 4, further comprising a conversion circuit and a CPU for controlling each of the circuits. 6. The dental chair unit body receives a plurality of on / off control circuit output signals and D / A conversion circuit output signals transmitted by signal lines from the mat. The dental chair unit control device according to any one of claims 1 to 5, wherein the posture control of the chair and the drive control of a plurality of instruments for dental treatment are performed. 7. The dental chair unit control device according to claim 1, wherein the mat is made of non-conductive rubber or resin. 8. The dental chair unit control device according to claim 1, wherein the entire upper surface of the mat and the entire bottom surface of the foot controller are flat surfaces. 9. A method according to claim 9, wherein one or more concave grooves are formed in the upper surface of the mat, and a convex protrusion is provided on the bottom of the foot controller so as to fit into the concave groove of the mat. The dental chair unit control device according to any one of claims 1 to 7, wherein