KR102302247B1 - Handpiece and unit chair having the same - Google Patents

Abstract

A hand piece and a unit chair having the same are disclosed. A hand piece according to an embodiment of the present invention, a bur (Bur); a head to which the burr is mounted; a body connected to the head; a motor located inside the body and generating a driving force for driving the burr; a hand sensing unit exposed to the outside of the body to sense a user's grip strength; and a controller configured to control the speed of the motor based on the grip force. According to the present invention, it is possible to control specific components of the unit chair and the hand piece through manipulation of the hand piece and the foot control unit.

Description

A hand piece and a unit chair having the same {HANDPIECE AND UNIT CHAIR HAVING THE SAME}

The present invention relates to a hand piece for controlling a specific component through operation by a user and a unit chair having the same.

The unit chair is used for the purpose of treating examinees in dentistry, etc. The unit chair may include a chair part including a headrest for supporting the examinee's head, a backrest for supporting the back, and legrests for supporting the legs. The unit chair may include a table on which a surgical tool such as a hand piece required for treatment is mounted. The unit chair may include a control unit that applies a control signal to the chair unit, the table, and components thereof according to the request of the operator, so as to be operated according to the request of the operator.

In recent years, various studies have been conducted on unit chairs and hand pieces in terms of configuration and/or control methods that allow the examinee to feel more comfortable and the operator to proceed more conveniently.

SUMMARY OF THE INVENTION The present invention aims to solve the above and other problems.

Another object is to provide a hand piece capable of controlling specific components of the hand piece through manipulation of the hand piece, and a unit chair having the same.

Another object is to provide a unit chair capable of controlling specific components of the hand piece through manipulation of the foot control unit.

According to an aspect of the present invention to achieve the above or other objects, bur (Bur); a head to which the burr is mounted; a body connected to the head; a motor located inside the body and generating a driving force for driving the burr; a hand sensing unit exposed to the outside of the body to sense a user's grip strength; and a controller configured to control the speed of the motor based on the grip force.

It may further include an input unit provided on the body, wherein the control unit generates a speed fixed mode signal in which the motor rotates at a specific speed when the first signal is obtained through the input unit.

The control unit may release the speed fixed mode when the second signal is obtained through the input unit.

The hand sensing unit includes a plurality of pressure sensors disposed at different positions of the body, and the control unit includes the speed of the motor based on the strength of the force at each position based on signals sensed by the plurality of pressure sensors. can control

The controller may control the operation of the motor according to a degree to which the strength of the force at each position exceeds a preset strength.

In addition, according to another aspect of the present invention to achieve the above or other objects, a foot control unit pressed by the user's foot; A hand piece having a hand sensing unit for sensing the force of a user's hand, a burr, a motor generating a driving force for driving the bur, and a spray hole through which water and air are sprayed; a water supply unit for supplying water to the hand piece; an air supply unit for supplying air to the hand piece; and controlling the speed of the motor based on the user's grip force obtained by the hand sensing unit, and when a signal through the foot control unit is received, the water supply unit and the air are sprayed through the injection hole at least one of water and air It may include a control unit for controlling the operation of the supply unit.

A foot sensing unit provided in the foot control unit and sensing the force of the user's foot, a quantity adjusting unit controlling the amount of water transferred from the water supply unit to the hand piece, and the air supply unit being transmitted to the hand piece Further comprising an air pressure control unit for adjusting the air pressure, wherein the control unit, based on the strength of the force corresponding to the signal received by the foot sensing unit to adjust at least one of the amount and air pressure injected through the injection hole may include

The handpiece further includes an input unit provided in the body, and the control unit generates a speed fixed mode signal in which the motor rotates at a specific speed when the first signal is obtained through the input unit, When 2 signals are obtained, the speed fixed mode can be released.

The hand sensing unit includes a plurality of pressure sensors disposed at different positions of the body, and the control unit includes the speed of the motor based on the strength of the force at each position based on signals sensed by the plurality of pressure sensors. can control

The controller may control the operation of the motor according to a degree to which the strength of the force at each position exceeds a preset strength.

The effects of the hand piece and the unit chair according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, there is an advantage that at least one of the functions performed in the hand piece can be controlled through manipulation of the hand piece.

That is, the present invention adjusts the speed of the motor provided in the handpiece in response to the strength of the force applied by the operator's hand, so that the speed of the bar is more finely and more accurately adjusted than when the speed of the motor is controlled through the foot control unit. Not only that, but the speed of the motor can be adjusted more easily. Accordingly, the present invention can improve the operator's satisfaction.

In addition, the present invention can prevent an accident that may occur due to the burr operated by the motor even when not in the operating state by operating the motor or stopping the motor by determining whether the procedure is in the operating state. Accordingly, the present invention can improve the degree of safety for the use of the hand piece.

In addition, the present invention guides the gripping position gripped by the operator's fingers on the surface of the handpiece, so that the correct use of the handpiece can be induced. Accordingly, since the present invention can sense the force applied by the finger at the correct position, the intensity of the force corresponding to the intention of the operator can be accurately obtained, and thereby the motor can be controlled at a speed corresponding to the intention of the operator. can

According to at least one of the embodiments of the present invention, there is an advantage that at least one of the functions performed in the hand piece can be easily controlled through manipulation of the foot control unit.

That is, according to the present invention, at least one of the amount of water and the air pressure sprayed from the handpiece can be adjusted through the operation of the foot control unit. Accordingly, the present invention can spray an appropriate amount of water or air for the procedure, thereby improving the operator's satisfaction and preventing the examinee's discomfort or discomfort that may occur during the procedure.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 is a perspective view of a unit chair according to an embodiment of the present invention.
Fig. 2 is a block diagram of the unit chair shown in Fig. 1;
3 and 4 are views of a hand piece provided in a unit chair according to an embodiment of the present invention.
5 is a control block diagram of a hand piece provided in a unit chair according to an embodiment of the present invention.
6 is a flowchart of a hand piece provided in a unit chair according to an embodiment of the present invention.
7 is a flowchart of a hand piece using a foot control unit provided in a unit chair according to an embodiment of the present invention.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted.

The suffixes "module" and "part" for the components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have a meaning or role distinct from each other by themselves.

In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted.

In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number, such as first, second, etc., may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

1 is a perspective view of a unit chair according to an embodiment of the present invention, and FIG. 2 is a block diagram of the unit chair shown in FIG. 1 .

As shown in these drawings, the unit chair (10, unit chair) according to an embodiment of the present invention is a chair part (100, chair part), a table part (200, table part), a control unit 300, a power supply unit 400 , a communication unit 500 , a sensing unit 600 , a fluid supply unit 700 , and may include at least one of a sterilization unit 800 .

The unit chair 10 may be a collection of instruments necessary for the examinee's treatment. The unit chair 10 may be a device used for dental treatment. The unit chair 10 may include both the chair part 100 and the table part 200 or a part including some components of the chair part 100 and the table part 200 . In other words, the unit chair 10 may mean the chair part 100 . In other words, the unit chair 10 may mean the table unit 200 .

The chair unit 100 is a part on which the examinee sits or lies for treatment. The chair unit 100 may have a shape corresponding to the body type so that the examinee does not feel discomfort during treatment.

For the convenience of the examinee (or operator) and the examinee, one part of the chair unit 100 may operate separately from other parts.

The chair unit 100 may include at least one of a headrest 101, a headrest, a backrest 103, a seat 105, and a leg rest. The chair unit 100 may further include a plurality of armrests 112 and 114 .

The headrest 101 may be a part in contact with the examinee's head. The headrest 101 may be processed into a concave shape such that at least one portion corresponds to the shape of the head.

The backrest 103 may be a part in contact with the examinee's back. A headrest 101 may be connected to an upper side of the backrest 103 . The angle of the headrest 101 connected to the backrest 103 may be adjusted as needed. The angle of the headrest 101 may be adjusted electrically and/or manually. The backrest 103 may be coupled to the seat 105 and/or the base 107 .

The seat 105 may be a portion in contact with the lower body including the buttocks of the examinee. The seat 105 may be supported by a base 107 . The end of the seat 105 may be coupled to a leg rest that supports the examinee's foot. The leg rest coupled to the seat 105 may be adjusted in angle and/or distance as needed.

The armrests 112 and 114 may be located on both sides of the chair unit 100 . The armrests 112 and 114 may be provided at positions corresponding to the parts where both arms of the examinee seated on the chair 100 are naturally positioned so that the examinee can receive the examination in a stable posture.

At least one of the armrests 112 and 114 may be changed to a specific state by a user's manipulation. For example, it means that the position of the first armrest 112 or the second armrest 114 may be changed by the operation of the examinee and/or the examinee. For example, it means that the positions of all of the first and second armrests 112 and 114 may be changed by manipulation of the examinee and/or the examinee. If one of the first and second armrests 112 and 114 moves, the first armrest 112 close to the normal examinee's position may move. Therefore, in the following description, the first armrest 112 is mainly described as an example, but the same content may be selectively applied to the second armrest 114 as necessary. The state of the first armrest 112 may be changed in various configurations and methods, and this will be described in more detail in the corresponding part.

The table unit 200 may include various devices necessary for using the unit chair 10 for treatment and/or treatment. It can be defined that the table unit 200 and the chair unit 100 are in an Associated Device relationship with each other. In other words, the table unit 200 may be defined as an associated device of the chair unit 100 .

The table unit 200 may include at least one of a control unit 201 , a lighting unit 203 , a water supply unit 205 , a display unit 207 , and a foot control unit 209 .

The control unit 201 may be a cradle on which various dental instruments are disposed. The control unit 201 may be supplied with at least one of electricity, pneumatic, and hydraulic pressure to be used for the operation of the surgical instrument. For example, it means that the supplied electric furnace can turn on the oral light, which is one of the surgical instruments.

The control unit 201 may include various switches. Considering the location of the examinee, the control unit 201 may be located at a distance that the examinee can reach with his or her hand. Accordingly, various switches for controlling each part of the unit chair 10 may be located in the control unit 201 .

The lighting unit 203 may be positioned at a position where the inside of the examinee's oral cavity is not covered by the operator's body or the like. For example, when the examinee moves the upper body to examine the inside of the examinee's oral cavity, this means that the inside of the oral cavity may be positioned in an upward position where it is not darkened.

The lighting unit 203 may emit different light as needed. For example, it means that the brightness and/or the wavelength can be adjusted according to the ambient brightness and/or the contents of the examination.

The water supply unit 205 may be used for procedures such as cleaning the inside of the oral cavity by the examinee. The water supply unit 205 may include a drainage device.

The display unit 207 may display various types of information required for examination. For example, it means that an X-ray image of the examinee's oral condition and an image of the inside of the examinee's mouth can be displayed in real time. The position/angle of the display unit 207 may be adjusted up, down, left and right as needed so that the examinee feels less fatigue.

The foot control unit 209 may be used to control the operation of at least one dental surgical instrument. The examinee can freely use both hands while controlling the surgical instrument by manipulating the foot control unit 209 with the foot.

Various dental instruments disposed in the control unit 201 may include a plurality of hand pieces 210 .

The plurality of hand pieces may be provided in different shapes and perform different functions depending on the purpose of treatment and the method of use. For example, a plurality of hand pieces include a high-speed hand piece used for sharpening damaged teeth or splitting teeth, and a low-speed hand piece used for sharpening or polishing teeth (wiping and smoothing scratches on teeth). It may include a speed hand piece and an ultrasonic scaler used for tartar removal of teeth and gum lines.

The high speed hand piece may be classified into a ball bearing hand piece and an air bearing hand piece according to a structure.

The low-speed handpiece is a handpiece with a lower rotational speed than the high-speed handpiece. It consists of an electric handpiece that uses electricity to rotate a motor according to the driving method, and an air-type handpiece that uses air pressure to rotate the impeller. It can be classified, and can be divided into contra-angle hand pieces, straight-angle hand pieces, implant-angle hand pieces, and endo-angle hand pieces according to the use and the shape of the body. The structure and operation of such a hand piece will be described later.

The hand piece may be provided separately from the uni chair. In this case, the hand piece may receive driving power from a power source such as a battery.

The control unit 300 may perform a control operation for each part of the unit chair 10 . The control unit 300 may cause each part of the unit chair 10 to be organically operated. For example, when the angle of the backrest 103 of the chair unit 100 is adjusted and the examinee takes a lying position, the examiner rotates the legrest 107 to be positioned side by side on the seat 105 in response thereto. posture can be made natural.

The control unit 300 may be distributed in a plurality of locations. For example, the chair unit 100 may be controlled by a first controller, and the table unit 200 may be controlled by a second controller. The first and second control units may transmit one-way or upward-facing signals to allow the unit chair 10 to operate harmoniously as a whole.

The controller 300 may perform a control operation on an associated device of the unit chair 10 . For example, when the control unit 300 is located in the chair unit 100, it is possible to perform a control operation for all or some of the components of the unit chair 10 used together with the chair unit 100 during the examination. it means. For example, it means that an activation or deactivation control operation for the associated device can be performed.

The power supply unit 400 may be a device for supplying power to the unit chair 10 . The power supply unit 400 may include a converter for AC/DC power and/or a voltage/current converter suitable for each component.

The communication unit 500 may perform an operation of transmitting data of the unit chair 10 to an external device and/or an operation of receiving data from the external device. For example, it means that an operation of acquiring an X-ray image of the examinee from the server can be performed.

The sensing unit 600 may detect the state of the unit chair 10 . For example, it means that it is possible to detect whether an appropriate operation corresponding to the control signal of the controller 300 is being performed by detecting the current position of the chair unit 100 .

The fluid supply unit 700 may perform an operation of supplying a positive pressure fluid flow, supplying a negative pressure fluid flow, and supplying water. The fluid supply unit 700 may include at least one pump and/or a reservoir.

The sterilization/disinfection unit 800 may perform a sterilization operation on supplied water, air, and the like. The sterilization and disinfection unit 800 may perform a disinfection operation on the surgical instruments mounted on the control unit 201 . The sterilization/disinfection unit 800 may perform disinfection on a necessary part by disinfection using a chemical method and/or disinfection using an electrolysis effect.

The unit chair 10 may further include an air supply unit (not shown) for supplying air to the hand piece. The air supply unit (not shown) includes a compressor that compresses air, an air tank that temporarily stores the compressed air and then ejects it to the second tube, filters the oil mixed with the ejected air, and transfers the filtered oil to the oil pipe. It may include a filter that feeds back.

3 and 4 are views of a hand piece provided in a unit chair according to an embodiment of the present invention.

As shown in these drawings, various dental instruments disposed in the control unit 201 may include a plurality of hand pieces of various types.

The plurality of hand pieces 210 may have different treatment purposes and methods of use. That is, the plurality of hand pieces 210 may be provided in different shapes and different structures depending on the purpose of treatment and use, may include different components, may be operated in different driving methods, and may perform different functions. means it can be done. In this embodiment, among various types of hand pieces 210 , the hand piece 210 including a motor will be described as an example.

3, the hand piece 210 is connected to a burr 211, a cutting tool, a head 212 on which the burr 211 is mounted, and the head 212 so that it can be held by hand. The formed body 213 , a motor 214 provided inside the body 213 and receiving power to generate power, and a power transmission unit transmitting the power generated from the motor 214 to the burr 211 . (215).

The burr 211 may be detachably mounted from the head 212 . The type of the burr 211 may be various. The various burs 211 may be formed of a material and shape corresponding to the purpose of treatment, and may be replaced with a bur 211 suitable for treatment by the examinee.

The head 212 may include a spray hole ( 216 in FIG. 4 ) through which water and air are sprayed. The injection hole 216 may be one or plural. The plurality of injection holes may be disposed to be spaced apart from each other by a predetermined distance on the head 212 .

The plurality of injection holes 216 may be connected to a first tube through which water is transmitted and a second tube through which air is transmitted to receive and spray water and air. The amount of water and air pressure injected through the injection hole 216 may be determined according to information on the force applied to the foot control unit 209 .

Water and air may be selectively sprayed through a switch provided in the control unit. For example, when the water spray switch is selected by the examinee, the hand piece 210 sprays water through the spray hole, and when the air spray switch is selected by the examinee, the hand piece 210 sprays air through the spray hole can do.

Water and air may be selectively sprayed in response to pressurization information of the foot control unit 209 . For example, when the foot control unit 209 is pressed once by the examinee, the hand piece 210 sprays water through the spray hole, and when the foot control unit 209 is pressed twice by the examinee, the hand piece 210 is Air can be sprayed through the spray hole. In addition, the water injection amount may be adjusted in response to the strength of the force when pressing once, and the air pressure may be adjusted in response to the strength of the second force when pressing twice.

The body 213 may be formed by bending a specific portion depending on the purpose for ease of examination and operation and safety. That is, the body 213 may have an angle shape.

The body 213 may include a guide part 217 for guiding a gripping position for the examinee's ease of gripping and accuracy. The guide part 217 is provided at a point where the examinee's finger contacts among the surface of the body 213 , and may be provided in one or a plurality of pieces. For example, the guide parts 217: 217a, 217b may be provided at a point where the thumb contacts, a point where the index finger contacts, and may be further provided at a point where the middle finger contacts, among the surfaces of the body 213 . .

The guide part 217 may be implemented as a mark printed with ink on the surface of the body 213 . In addition, the guide part 217 may be implemented as a depression formed on the surface of the body 213 , or may be implemented as a projection formed with a plurality of protrusions protruding from the surface of the body 213 .

The power transmission unit 215 may include at least one bearing for transmitting the rotational force of the motor 214 to the burr 211 as a driving force of the burr, at least one gear, and at least one shaft. For example, the power transmission unit 215 includes a subordinate rotation shaft connected to the burr 211 , a slave gear connected to the slave rotation shaft, a planetary gear meshed with the slave gear, a ring gear meshed with the planetary gear, and a planetary gear. A rotating plate for rotating the gear, a driving rotating shaft connected to the rotating shaft of the motor 214 and transmitting the rotational force of the motor 214 to the rotating plate, and a bearing supporting the driving rotating shaft and having a ring gear fixed to the front. have.

The hand piece 210 may include an input unit 218 for receiving an input from the examinee, and a hand sensing unit 219 for detecting an intention to manipulate the speed by the examinee's hand.

The input unit 218 may include a first input unit 218a receiving a power on/off command and a second input unit 218b receiving a speed fixing command. Here, the first input unit 218a and the second input unit 218b may be implemented as at least one of a key, a button, a switch, and a touch pad.

The hand sensing unit 219 senses the strength of the force applied by the hand when the examinee holds the hand piece 210 with her hand. For example, it means that the user can sense the grip strength of gripping the hand piece 210 with his/her hand. The hand sensing unit 219 may be provided at a point where the examinee's finger contacts among the body 213 of the hand piece 210 .

One or a plurality of hand sensing units 219 may be provided. For example, the hand sensing unit 219 may be provided inside the body 213 and provided below the guide unit 217 . In other words, the hand sensing unit 219 means that portions of the body 213 exposed to the outside may be disposed at a plurality of positions spaced apart from each other. For example, as shown in FIG. 3 , one hand sensing unit 219 is provided at a point where the examinee's fingers are gathered when the examinee grips the hand piece 210 among several points of the body 213 . could be Here, the point at which the examinee's fingers are gathered may be a point at which the force of the fingers is gathered.

A plurality of hand sensing units 219 may be disposed to be spaced apart from each other at different positions of the body 213 .

When a plurality of hand sensing units 219 are provided, as shown in FIG. 4 , the first hand sensing unit 219a may be provided at a point in the body 213 where the thumb contacts, and the index finger contacts it. The second hand sensing unit 219b may be provided at a point where the middle finger contacts, and the hand sensing unit 219c may be provided at a point where the middle finger contacts.

The hand sensing unit 219 includes at least one of a pressure sensor and a load cell. The hand sensor 219 may include at least one of a tactile sensor and a torque sensor.

The hand sensing unit 219 may detect a movement amount of the hand piece 210 moved by the hand when the examinee grips the hand piece 210 . The hand sensing unit 219 may include at least one of a gyro sensor and an acceleration sensor.

The hand piece 210 may further include a motor driving unit 220 for driving the motor 214 in response to a control command from the controller 310 when the strength of the finger is sensed.

5 is a control block diagram of a hand piece provided in a unit chair according to an embodiment of the present invention.

The hand piece 210 , the input unit 218 , the hand sensing unit 219 , the motor driving unit 220 , the quantity control unit 230 , the air pressure control unit 240 , and the foot sensing unit 250 according to an embodiment of the present invention ), a control unit 310 and a storage unit 311 may be included.

The input unit 218 may be a device for obtaining a command from the examinee who is the user. The input unit 218 includes a first input unit 218a (refer to FIG. 3 ) that receives a power-on command and a power-off command of the hand piece 210 and a speed fixing command for fixing the speed of the motor provided in the hand piece 210 . and a second input unit 218b (refer to FIG. 3 ) for receiving the .

The first input unit ( 218a in FIG. 3 ) may transmit a power-on signal to the control unit 310 when the power is turned off and is operated by the examinee, and is operated by the examinee while the power is on Then, a power-off signal may be transmitted to the control unit 310 .

The second input unit ( 218b of FIG. 3 ) may transmit a speed fixing signal to the control unit 310 when a force is sensed by the hand sensing unit 219 and manipulated by the examinee. The second input unit ( 218b of FIG. 3 ) may receive a release command for releasing the speed fix. That is, when the second input unit is manipulated by the examinee while the motor rotates at a fixed speed, the second input unit may transmit a release signal for releasing the fixed speed to the controller 310 .

The hand sensing unit 219 may detect a force applied by the examinee's hand. The hand sensing unit 219 may sense the strength of the force applied to the hand and transmit a signal corresponding to the sensed strength of the force to the control unit 310 .

When a plurality of hand sensing units 219 are provided in the body 213 , the plurality of hand sensing units 219 may respectively transmit signals corresponding to the strength of the sensed force to the control unit 310 .

The hand sensing unit 219 may sense at least one of a movement direction and a movement distance of a force applied to the hand.

The motor driving unit 220 may drive the motor 214 at a rotation speed corresponding to the control command of the control unit 310 . The motor driving unit 220 may adjust at least one of a current and a current supplied to the motor 214 corresponding to a control command of the control unit 310 .

The motor driving unit 220 may include at least one switch element, and by using the switch element, the current or voltage applied to the motor M is adjusted by adjusting the pulse width of the current or voltage applied to the switch element. By doing so, the rotation speed of the motor can be adjusted. The motor driving unit 220 may adjust the torque strength of the motor by adjusting the RPM of the motor.

The water quantity control unit 230 may be provided in a first tube (not shown) that delivers the water supplied from the water supply unit 205 to the head. The first tube may be connected from the inside of the body 213 to the head 213 .

The water quantity control unit 230 may adjust the amount of water sprayed from the water supply unit 205 to the injection hole 216 of the head in response to a control command from the control unit 310 . The quantity control unit 230 may include a valve (not shown) that controls opening and closing.

The air pressure control unit 240 may be provided in a second tube (not shown) that delivers the air supplied from the air supply unit (not shown) to the head. The second tube may be connected from the inside of the body 213 to the head 212 .

The air pressure control unit 240 may adjust the pressure of air injected from the air supply unit (not shown) to the injection hole 216 of the head in response to a control command of the control unit 310 . The air pressure adjusting unit 240 may include a regulator.

Water and air sprayed through the injection hole 216 around the burr 211 are mixed with each other inside the head after the air pressure is adjusted by the air pressure control unit and the quantity is adjusted by the quantity control unit, and is sprayed as if It can be sprayed like water sprayed from a sprayer.

The foot sensing unit 250 is provided in the foot control unit 209 , and detects a force applied to the foot control unit 209 by the examinee's foot. The foot sensing unit 250 may sense the strength of the force of the foot and transmit a signal corresponding to the sensed strength of the force to the controller 310 . The foot sensing unit 250 may include at least one of a pressure sensor and a load cell. The foot sensor 250 may be at least one of a tactile sensor and a torque sensor.

The hand piece 210 may further include a bur sensing unit (not shown) for sensing the pressure applied to the burr. The burr detection unit (not shown) may be a load cell or a pressure sensor.

The control unit 310 may be provided in the hand piece 210 or may be a separate component for controlling the operation of the table unit 200 . Hereinafter, only a configuration for controlling the hand piece 210 among the characteristic configurations of the control unit 310 will be described.

When the control unit 310 receives a signal corresponding to the power on/off command of the first input unit, the control unit 310 controls the on/off of the power applied to the motor. That is, when receiving a signal corresponding to a power-on command, the controller 310 controls to apply power to the motor, and when receiving a signal corresponding to a power-off command, controls to cut off power applied to the motor.

The control unit 310 receives the signal output from the hand sensing unit 219, processes the received signal to recognize the strength of the force, checks the speed of the motor corresponding to the recognized strength of the force, and checks the motor The driving of the motor can be controlled based on the speed of For example, if the strength of the recognized force is the first strength, the control unit 310 sets the speed of the motor to the first speed, and if the strength of the recognized force is the second strength, the speed of the motor to the second speed. When the strength of the force is the third strength, the speed of the motor can be controlled at the third speed.

Signal processing in the control unit 310 is to convert the received signal into a digital signal. The received signal is an analog signal, and may be an electrical signal.

When there are a plurality of hand sensing units 219 , the control unit 310 receives signals output from the plurality of hand sensing units 219 , respectively, processes the received signals, and transmits the signals to each hand sensing unit 219 . Recognizes the strength of the force detected by can do.

When there are a plurality of hand sensing units 219, the control unit 310 sums the strength of each recognized force to obtain the summed intensity, checks the speed of the motor corresponding to the acquired summed intensity, and adds the determined motor speed. Based on this, it is possible to control the driving of the motor.

When receiving a signal through the second input unit after confirming the speed of the motor corresponding to the recognized strength of the force, the control unit 310 sets the checked speed as the fixed speed of the motor and drives the motor based on the set fixed speed can be controlled.

When a signal is received through the second input unit in a state in which the fixed speed of the motor is set, the controller 310 may recognize it as a release command of the fixed motor speed.

The control unit 310, when recognizing the strength of the force, checks the time maintained at the recognized strength of the force, and when the confirmed time elapses a predetermined time, recognizes it as a speed fixing command, and corresponds to the recognized strength of the force. You can set the speed to the fixed speed of the motor and control the speed of the motor at the set fixed speed.

When recognizing the strength of the force, the control unit 310 may recognize it as a speed fixing command when receiving a press signal from the foot sensing unit 250 .

When there are a plurality of hand sensing units 219, the control unit 310 recognizes as a speed fixing command when receiving a signal from any one hand sensing unit 219 after receiving a signal from the plurality of hand sensing units 219 It is also possible, and when a signal is received from only one hand sensing unit 219 in a state in which the speed of the motor is fixed, it may be recognized as a speed fix release command.

The control unit 310 controls the speed of the motor to increase by increasing at least one of a current and a voltage applied to the motor as the strength of the force increases, and as the strength of the force decreases, at least one of the current and voltage applied to the motor It can be controlled so that the speed of the motor is reduced by reducing it.

The controller 310 may control the speed of the motor based on the number of times of pressurization with a certain intensity or more. For example, the control unit 310 sets the motor speed to the first speed when the number of pressurizations is one, sets the speed of the motor to the second speed when the number of subscriptions is two, and sets the speed of the motor to the third speed when the number of pressurizations is three times. speed can be controlled. Here, the first speed may be a speed slower than the second speed, and the second speed may be a speed slower than the third speed.

The control unit 310 may control the speed of the motor based on the pressurization time for which the pressure is greater than or equal to a certain intensity. For example, the controller 310 sets the motor speed to the first speed when the pressurization time is 1 second, sets the motor speed to the second speed when the pressurization time is 2 seconds, and sets the motor speed to the third speed when the pressurization time is 3 seconds speed can be controlled.

The controller 310 may stop and control the driving of the motor when a signal of a predetermined intensity or less is received from at least one of the plurality of hand sensing units 219 .

When receiving a signal exceeding a predetermined strength from at least two of the plurality of hand sensing units 219, the control unit 310 controls the driving of the motor, and when receiving a signal exceeding a predetermined strength from one of the plurality of hand sensing units 219, the motor The drive can be stopped and controlled.

When receiving a signal through the bur sensing unit, the control unit 310 recognizes the size of the pressure applied to the bur based on the received signal, and determines whether a procedure is performed by the examinee based on the recognized size of the pressure, and the operation is in progress. When it is determined that no, when the hand sensing unit 219 receives a signal, the strength of the force may be recognized based on the received signal. The controller 310 may determine that the operation is not in progress if the recognized pressure level is less than or equal to the reference level, and may determine that the operation is in progress if the pressure level exceeds the reference level.

The control unit 310, when receiving a signal through the burr detection unit, recognizes the magnitude of the pressure applied to the burr based on the received signal, and stops the driving of the motor when the recognized pressure is less than or equal to the reference size, If the magnitude of the pressure exceeds the reference magnitude, the driving of the motor can be controlled.

When the bur type information is received through the switch, the controller 310 may check the speed of the motor corresponding to the received bur type and force strength.

When the control unit 310 receives the signal output from the hand sensing unit 219, the received signal is signal-processed to recognize the amount of movement of the force, and the speed of the motor corresponding to the recognized amount of movement is confirmed, and the speed of the motor is determined. drive can be controlled. The amount of movement of the force may be a value of a distance traveled by the hand piece 210 . For example, the control unit 310 sets the speed of the motor to the first speed if the movement amount of the force is less than or equal to the first movement amount, and sets the speed of the motor to the second speed if the movement amount of the force exceeds the first movement amount and is less than or equal to the second movement amount. , when the movement amount of the force exceeds the second movement amount and is less than or equal to the third movement amount, the speed of the motor may be controlled as the third speed.

When the control unit 310 receives the signal output from the hand sensing unit 219, the received signal is processed to recognize the movement direction and amount of force, and the speed of the motor corresponding to the recognized movement direction and movement amount is confirmed and It is possible to control the driving of the motor at the confirmed speed. For example, when the movement direction of the force moves below a certain amount of movement between the first direction and the second direction, the control unit 310 may change the speed of the motor to the first speed and a certain amount of movement between the first direction and the second direction. If it moves in excess of , the speed of the motor can be controlled as the second speed. The control unit 310, when the movement direction of the force moves below a certain amount of movement between the third direction and the fourth direction, moves the speed of the motor at the third speed and exceeds the certain amount of movement between the third direction and the fourth direction. Then, the speed of the motor can be controlled as the fourth speed. The first and second directions may be opposite to each other, the third and fourth directions may be opposite to each other, and the first and second directions and the third and fourth directions may be perpendicular to each other.

The control unit 310 may also control the speed of the motor depending on whether the amount of movement between the first and second directions is a preset number of movement, and the motor according to whether the amount of movement in the third and fourth directions is a preset number of movement. can control the speed of For example, when the movement direction of the force moves by a preset number of movement equal to or less than a predetermined movement amount between the first direction and the second direction, the control unit 310 may change the speed of the motor to the first speed, the first direction and the second direction. If it moves by a preset number of moves in excess of a certain amount of movement between them, the speed of the motor can be controlled as the second speed. In addition, the control unit 310, when the movement direction of the force is moved by a preset number of movement equal to or less than a predetermined movement amount between the third direction and the fourth direction, the speed of the motor is changed to the third speed, between the third direction and the fourth direction. If it moves by a preset number of moves in excess of a certain amount of movement, the speed of the motor can be controlled as the fourth speed.

The controller 310 may control the speed of the motor based on the number of movements between the first and second directions and the number of movements in the third and fourth directions. For example, if the movement direction of the force moves twice by more than a certain amount of movement between the first direction and the second direction, the control unit 310 may change the speed of the motor to the first speed, between the first direction and the second direction. If it moves more than a certain amount of movement three times, the speed of the motor can be controlled as the second speed. In addition, when the movement direction of the force moves twice by more than a certain amount of movement between the third and fourth directions, the control unit 310 increases the speed of the motor to the third speed and between the third and fourth directions by more than a certain amount of movement. By moving three times, the speed of the motor can be controlled as the fourth speed.

When receiving a signal from the foot sensing unit 250, the control unit 310 processes the received signal to recognize the strength of the force applied by the examinee's foot, and confirms the quantity corresponding to the recognized strength of the force. It is possible to control the operation of the quantity adjusting unit based on the obtained quantity.

When receiving a signal from the foot sensing unit 250, the control unit 310 processes the received signal to recognize the strength of the force applied by the examinee's foot, and confirms the air pressure corresponding to the recognized strength of the force. It is possible to control the operation of the air pressure control unit based on the air pressure.

When receiving a signal from the foot sensing unit 250, the control unit 310 processes the received signal to recognize the strength of the force applied by the examinee's foot, and check the quantity and air pressure corresponding to the recognized strength of the force. and control the operation of the water quantity adjusting unit based on the confirmed quantity, and control the operation of the air pressure adjusting unit based on the confirmed air pressure.

When receiving a signal from the foot sensing unit 250, the control unit 310 processes the received signal to recognize the strength of the force applied by the examinee's foot and pressurizes the recognized strength of the force to be maintained above the reference strength. It is possible to check the holding time, check the quantity and air pressure corresponding to the confirmed pressurization holding time, control the operation of the quantity adjuster based on the confirmed quantity, and control the operation of the air pressure adjuster based on the confirmed air pressure.

When receiving a signal from the foot sensing unit 250, the control unit 310 processes the received signal to recognize the strength of the force applied by the examinee's foot, and the recognized strength is greater than or equal to the reference strength within a reference time. It is possible to check the number of times of pressurization, check the quantity and air pressure corresponding to the number of pressurizations, control the operation of the quantity control unit based on the confirmed quantity, and control the operation of the air pressure adjuster based on the checked air pressure.

The controller 310 may adjust the quantity based on the time maintained above the reference intensity, and control the air pressure based on the number of times it is pressurized within the reference time. The control unit 310 may adjust the air pressure based on the time maintained above the reference intensity, and control the quantity based on the number of times the pressure is applied within the reference time.

The control unit 310 performs the above-described operation using a memory (not shown) that stores data for an algorithm or a program that reproduces the algorithm for controlling the operation of the components in the unit chair, and the data stored in the memory. It may be implemented by a processor (not shown). In this case, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip.

The storage unit 311 stores the speed of the motor corresponding to each of the plurality of force strengths. The intensity of the plurality of forces may be values between a minimum intensity and a maximum intensity among intensities detectable by one hand sensing unit 219 . Also, the intensity of the plurality of forces may be values between the minimum average intensity and the maximum average intensity of the intensity of the force sensed by the plurality of hand sensing units 219 . In addition, the intensity of the plurality of forces may be values between the minimum and maximum intensity of the sum of the forces sensed by the one hand sensing unit 219 .

The storage unit 311 may store a certain intensity and store the speed of the motor corresponding to the number of times the body 213 is pressed. The storage unit 311 may store the speed of the motor corresponding to the pressing time of the body 213 .

The storage unit 311 may store a predetermined time for recognizing the speed fixing command and the speed fixing releasing command of the motor. Here, the predetermined time may be a time during which the force applied to the body 213 by the examinee is constantly maintained.

The storage unit 311 may store the speed of the motor for each intensity of force corresponding to the type of the bur. The storage unit 311 may store a reference size of the pressure of the burr for controlling the driving of the motor.

The storage unit 311 may store quantities respectively corresponding to the strengths of the force applied to the foot control unit 209 . The storage unit 311 may store air pressures respectively corresponding to the strengths of the force applied to the foot control unit 209 . The storage unit 311 may store quantity and air pressure respectively corresponding to the strengths of the force applied to the foot control unit 209 .

The storage unit 311 may store the quantity and air pressure respectively corresponding to the reference time for pressing the foot control unit 209 and the number of times for pressing the foot control unit 209 . The storage unit 311 stores the quantity and air pressure respectively corresponding to the reference strength of pressing the foot control unit 209 and the pressing and holding times of the foot control unit 209 .

The storage unit 311 is a non-volatile memory device or RAM such as a cache, read only memory (ROM), programmable ROM (PROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), and flash memory. It may be implemented as at least one of a volatile memory device such as (Random Access Memory), a hard disk drive (HDD), or a storage medium such as a CD-ROM, but is not limited thereto. The storage unit may be a memory implemented as a chip separate from the processor described above with respect to the control unit, or may be implemented as a single chip with the processor.

At least one component may be added or deleted according to the performance of the components for controlling the hand piece 210 shown in FIG. 5 . In addition, it will be readily understood by those skilled in the art that the mutual positions of the components may be changed corresponding to the performance or structure of the system.

Meanwhile, each component shown in FIG. 5 means a hardware component such as software and/or a Field Programmable Gate Array (FPGA) and an Application Specific Integrated Circuit (ASIC).

6 is a flowchart of a hand piece provided in a unit chair according to an embodiment of the present invention.

The hand piece 210 may perform a step of determining whether the power is turned on (S1001).

Determination of whether the power is on is the power on signal generated by the first input unit when the power on/off button, which is the first input unit, is operated by the examinee in a state in which the power of the hand piece 210 is turned off. Determining whether to receive or not. At this time, power for operation may be supplied to various components provided in the hand piece 210 .

The hand piece 210 may perform a step S1002 of detecting the strength of the force applied by the examinee using the hand sensing unit 219 .

The step of detecting the strength of the force applied by the examinee includes processing the signal output from the hand sensing unit 219 and recognizing the strength of the force corresponding to the signal-processed signal based on information stored in the storage unit. may include steps.

When the hand piece 210 is provided with a plurality of hand sensing units 219, the step of detecting the strength of the force applied by the examinee includes receiving a signal output from each of the plurality of hand sensing units 219, and each Recognizes the strength of the force sensed by each hand sensing unit 219 by processing the signal of It may include a step of recognizing.

When the hand piece 210 is provided with a plurality of hand sensing units 219, the step of detecting the force applied by the examinee includes receiving signals output from each of the plurality of hand sensing units 219, and each signal Recognizes the strength of the force sensed by each hand sensing unit 219 by signal processing, sums up the strengths of each recognized force to obtain a summed strength, and recognizes the obtained summed strength as the strength of the applied force may include the step of

The hand piece 210 may perform a step (S1003) of confirming the speed of the motor corresponding to the recognized strength of the force.

When one hand sensing unit 219 is provided, checking the speed of the motor may include checking the speed of the motor corresponding to the strength of one recognized force among information stored in the storage unit.

When the plurality of hand sensing units 219 are provided, checking the speed of the motor may include checking the speed of the motor corresponding to the average strength of the recognized force among information stored in the storage unit. In addition, when the plurality of hand sensing units 219 are provided, checking the speed of the motor may include checking the speed of the motor corresponding to the sum strength of the recognized forces among the information stored in the storage unit.

The hand piece 210 may perform a step (S1004) of determining whether a motor fixing command has been received.

Determining whether to receive the motor fixing command means determining whether a signal generated by the second input unit is received when the speed fixing button, which is the second input unit, is operated by the examinee. In other words, it can be said that it means determining whether a speed fixed mode signal is received.

The hand piece 210 sets the checked speed of the motor to the fixed speed when it is determined that the signal of the speed fixing button is received.

The hand piece 210 may perform a step (S1005) of driving the motor at a set fixed speed. Driving the motor means that the rotation speed of the motor reaches a fixed speed by adjusting at least one of a current and a voltage applied to the motor.

When the hand piece 210 receives a signal through the burr sensing unit, it recognizes the level of pressure based on the received signal, and if the recognized pressure level is less than or equal to the reference level, it is determined that the operation is not in progress and temporarily stops the driving of the motor, If the recognized pressure exceeds the reference size, it is determined that the operation is in progress, and it is also possible to drive the motor at a set fixed speed.

When the hand piece 210 receives a signal from the hand sensing unit 219 when the motor is in a stopped state, it recognizes the strength of the force corresponding to the received signal and resets the speed of the motor based on the recognized strength of the force. can

The hand piece 210 may release the speed fixation of the motor upon receiving a signal from the second input unit. That is, the hand piece 210 may delete the set fixed speed.

7 is a flowchart of a hand piece using a foot control unit provided in a unit chair according to an embodiment of the present invention.

The unit chair 10 may perform a step ( S1006 ) of determining whether a signal from the foot control unit 209 is received during the procedure using the hand piece 210 .

The signal reception of the foot control unit 209 means reception of a signal generated from the foot sensing unit 250 provided in the foot control unit 209 . The foot sensing unit 250 may generate a signal according to the subscription of the foot control unit 209 .

The unit chair 10 may check the strength of the force applied to the foot control unit 209 ( S1007 ).

The confirmation of the strength of the force may include processing the received signal and confirming the strength of the force corresponding to the signal-processed signal based on information stored in the storage unit.

The unit chair 10 may perform a step (S1008) of confirming the quantity and air pressure corresponding to the checked strength of the force.

Checking the quantity and air pressure means confirming the quantity and air pressure corresponding to the strength of the force based on information stored in the storage unit.

The hand piece 210 may check only the quantity corresponding to the strength of the force based on the information stored in the storage unit, and may check only the air pressure corresponding to the strength of the force based on the information stored in the storage unit.

The unit chair 10 may perform a step of spraying water and air through the spray hole of the hand piece 210 ( S1009 ) based on the checked quantity and air pressure.

The spraying of water means spraying an amount of water corresponding to the strength of the checked force by controlling the operations of the water supply unit 205 and the water quantity adjusting unit 230 . The operation control of the water quantity adjusting unit 230 means controlling the operation of the valve by an opening degree corresponding to the quantity.

The spraying of air means spraying the air having a pressure corresponding to the strength of the force checked by controlling the operations of the air supply unit and the air pressure adjusting unit 240 . The operation control of the air pressure adjusting unit 240 means controlling the driving of the regulator by an opening degree corresponding to the air pressure. That is, the sprayed water and air may be mixed with each other inside the head 212 and sprayed after the air pressure is adjusted by the air pressure control unit and the quantity is adjusted by the quantity control unit. At this time, it may be sprayed like water sprayed from a sprayer.

The above detailed description should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

10: unit chair 100: chair part
200: table part 210: hand piece
211: bur 212: head
213: body 214: motor
215: power transmission unit 216: injection hole
217: guide unit 218: input unit
219: hand sensing unit 220: motor driving unit
230: quantity control unit 240: air pressure control unit
250: foot sensing unit 300, 310: control unit
400: power unit 500: communication unit
600: sensing unit 700: fluid supply unit
800: sterilization sterilization unit

Claims (11)

Bur;
a head to which the burr is mounted;
a body connected to the head;
a motor positioned inside the body and generating a driving force for driving the burr;
a hand sensing unit exposed to the outside of the body to sense at least one of a user's grip strength and a movement direction and a movement distance of the grip force; and
and a control unit configured to control the speed of the motor based on at least one of the grip force and a movement direction and a movement distance of the grip force.
According to claim 1,
Further comprising an input unit provided on the body,
The control unit is
and generating a speed fixed mode signal in which the motor rotates at a specific speed when the first signal is obtained through the input unit.
◈Claim 3 was abandoned when paying the registration fee.◈ 3. The method of claim 2,
The control unit is
A hand piece for releasing the speed fixed mode when a second signal is obtained through the input unit.
According to claim 1,
The hand sensing unit includes a plurality of pressure sensors disposed at different positions of the body,
The control unit is
A hand piece for controlling the speed of the motor based on the strength of the force at each position based on the signals sensed by the plurality of pressure sensors.
◈Claim 5 was abandoned when paying the registration fee.◈ 5. The method of claim 4,
The control unit is
A hand piece for controlling the operation of the motor according to the degree to which the strength of the force at each position exceeds a preset strength.
◈Claim 6 was abandoned when paying the registration fee.◈ According to claim 1, wherein the control unit,
Hand piece, characterized in that for controlling the speed of the motor based on the number of times or time the grip force is applied to the hand sensing unit.
◈Claim 7 was abandoned when paying the registration fee.◈ According to claim 1, wherein the control unit,
A hand piece characterized in that the speed of the motor is changed according to a combination of a movement direction and a movement distance of the predetermined grip force.
◈Claim 8 was abandoned when paying the registration fee.◈ According to claim 1, wherein the control unit,
Handpiece, characterized in that for controlling the speed of the motor based on the movement direction and number of movement of the grip force, or based on the movement direction, movement distance, and number of movement of the grip force.
According to claim 1, wherein the control unit,
When the holding time of the grip force passes a predetermined time, the handpiece, characterized in that generating a speed fixed mode signal in which the motor rotates at a specific speed.
The method of claim 1,
Further comprising a burr sensing unit for sensing the pressure applied to the burr,
The control unit, hand piece, characterized in that for determining whether to perform the procedure based on the magnitude of the pressure recognized through the burr detection unit.
◈Claim 11 was abandoned when paying the registration fee.◈ 11. The method of claim 10, wherein the control unit,
A hand piece, characterized in that the grip force is recognized through the hand sensing unit when the operation is not performed as a result of determining whether the operation is performed.

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