KR20210142379A - Headrest for detal unit chair - Google Patents

Abstract

The present invention relates to a headrest for a dental unit chair capable of reducing noise generated during a dental treatment in order to promote a mental and physical stability of a patient. Specifically, the present invention relates to the headrest for the dental unit chair equipped with a sound part for decreasing noise caused by the driving of the dental equipment, wherein the sound part comprises a bone conduction speaker for which an output sound can be transmitted to the auditory nerve through the jawbone or the occipital region, enables to be responded quickly according to the head of an adult or a child during dental treatment, and is manufactured so that a smooth rotational movement can be made when the face is rotated for treatment.

Description

Headrest for dental unit chair {HEADREST FOR DETAL UNIT CHAIR}

The present invention relates to a dental unit chair headless that can reduce noise generated during dental treatment to promote mental and physical stability of a patient. The unit includes a bone conduction speaker that allows the output sound to be transmitted to the auditory nerve through the jawbone or occipital region. It relates to a headrest for a dental unit chair manufactured so that movement can be made.

It is the noise and pain of anesthetic injections that provide anxiety and fear to the patient during dental treatment. In particular, during dental treatment, the patient feels anxiety and fear because of the noise caused by the handpiece, scaler, suction, and compressor, which are treatment devices.

Various waveforms of low frequency, medium frequency, and high frequency are emitted from these treatment devices. In particular, the waveform of 4,000 Hertz (Hertz, Hz) is the most sensitive to human hearing. In addition, the noise generated from the handpiece is 75 dB (decibel, sound pressure level) or more, but there is a problem in that hearing may be temporarily damaged when exposed to this level of noise for a long time.

For this reason, dental treatment is delayed one by one, and in the end, the time that can be treated only with inexpensive and simple procedures such as restorative treatment or conservative treatment is missed, leading to a state that requires high cost and long-term treatment, such as implant or prosthetic treatment after tooth extraction. For the patient, this can only be a loss.

You can receive medical treatment while wearing headphones to block the noise of the above treatment device, but there is a hassle of putting on and taking off the headphones every time you do medical treatment, and if the headphones are still in close contact with your ears during treatment, All external voices are blocked, causing a problem that the doctor's instructions or questions cannot be delivered.

In addition, during dental treatment, the position of the head must be appropriately adjusted according to the treatment site. The conventional headrest is not rotated according to the rotation of the patient's head, but is configured in a way that the patient adjusts the position of the head by himself for a long time treatment. A problem occurred in that the neck was strained when it was required.

Therefore, there is a need to develop a headrest that can reduce the noise of the dental treatment device to relieve the patient's fear and tension before treatment, and can comfortably rotate the patient's head position according to the treatment site.

1. Korean Patent No. 10-2007577 2. Korean Patent No. 10-1029171

The present invention has been devised to solve the above problems, and a separate sound filtering unit capable of outputting a frequency or sound having a constant waveform is provided so as to attenuate noise generated during driving of a dental treatment instrument, the patient's An object of the present invention is to provide a headrest for a dental unit chair capable of freely rotating a head position according to a treatment site.

The headrest for a dental unit chair according to an embodiment of the present invention is disposed on the top of the backrest 110 of the unit chair 100, which is a dental chair, and is a virtual rotation shaft erected in the vertical extension direction of the backrest 110. (L) a headrest rotating around the (200); a rotation control unit 300 provided between the backrest 110 and the headrest 200 to control a rotation angle of the headrest 200; a pair of cushion parts 400 provided on one side of the headrest 200 to form a constant radius of curvature to surround a part of the back of the head; and a sound filtering unit 500 mounted on the inside of the cushion unit 400 and including a diaphragm 510 for transmitting sound vibrations to the occipital region.

In addition, the rotation control unit 300, one side of the rod 310 is connected to the headrest 200; a traction gear 320 mounted on the other side of the rod 310 and having a plurality of gear teeth formed on the circumferential surface; a rotating bearing 330 provided between the rod 310 and the traction gear 320 so that the traction gear 320 can rotate around the rod 310; A gear housing 340 in which both sides are opened so that the rod 310 passes through, and a gear guide groove 341 drawing a predetermined radius of curvature is formed so that the traction gear 320 is seated inside the opened; and a driving motor 350 for providing power to the traction gear 320 so that the headrest 200 moves to one side or the other side along the curvature radius of the gear guide groove 341 .

In addition, a gear seating groove 342 facing the gear guide groove 341 is further formed in the center of the gear housing 340 , and the rotation control unit 300 is seated in the gear seating groove 342 and the A driving gear 360 for rotating the traction gear 320 by receiving the rotational force of the driving motor 350 is further provided, and at one side of the gear guide groove 341 , the traction gear 320 is the gear guide groove The gear teeth meshing with the gear teeth of the traction gear 320 to move along the 341 may be further formed.

In addition, the rotation control unit 300, one side of the sliding rod 370 is connected to the headrest 200; and a housing 380 into which the sliding rod 370 is inserted, a guide groove 381 for accommodating a fluid therein is formed while drawing a constant radius of curvature, and the guide groove is provided in the housing 380. A first fluid passage 382 and a second fluid passage 383 are formed in communication with one side and the other side of 381, respectively, and the sliding rod 370 moves along the guide groove 381. A hydraulic motor 390 provided between the first fluid passage 382 and the second fluid passage 383 to control the movement of the fluid; may further include.

In addition, the cushion unit 400 includes a pair of seating plates 410; a rotation bracket 420 provided on a lower surface of the seating plate 410 and rotatably connected to the headrest 200; a pair of elastic members 430 having one side fixed to the rotation bracket 420 and the other side fixed to the headrest 200 to elastically support the seating plate 410; and a stopper 440 protruding from the lower surface of the seating plate 410 and having an end supported by the headrest 200 to limit the rotation range of the seating plate 410 .

In addition, the seating plate 410 is formed while drawing a certain radius of curvature so that the diaphragm 510 surrounds and closely adheres to a portion of the occipital part, and the end of the seating plate 410 is in close contact with the occipital part in the opposite direction. A first elastic groove 411 and a second elastic groove 412 spaced apart from the first elastic groove 411 by a predetermined distance may be formed in the seating plate 410 to be bent.

In addition, the depression depth of the first elastic groove 411 may be formed to be deeper than the depression depth of the second elastic groove 412 .

In the present invention, the sound output from the sound filtering unit is transmitted as an auditory signal through the occipital region and the jawbone, so that the operator can listen to the sound of the operator's instructions with an open ear, and the sound output from the sound filtering unit forms a constant waveform for treatment It can attenuate the noise generated by the device.

In addition, according to the present invention, when the position of the head is rotated according to the treatment site, the headrest rotates naturally to provide comfort to the patient, and the operator can directly rotate the headrest to the desired position, thereby reducing treatment time and improving treatment efficiency. can be raised

1 is a perspective view showing the overall appearance of the present invention;
2 is an exploded perspective view showing the main configuration of the rotation control unit of the present invention;
3 is a cross-sectional view showing an embodiment of the operation of the rotation control unit of the present invention;
4 is a cross-sectional view showing another embodiment of the rotation control unit of the present invention;
5 is a schematic diagram showing the main configuration of the cushioning unit and the sound filtering unit of the present invention, and
6 is a schematic view showing an embodiment of the cushion part of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

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. Also, when the first component and the second component on the network are connected or connected, it means that data can be exchanged between the first component and the second component by wire or wirelessly.

In addition, the suffixes "module" and "part" for the components used in the following description are given simply in consideration of the ease of writing the present specification, and do not give a particularly important meaning or role by themselves. Accordingly, the terms “module” and “unit” may be used interchangeably.

When these components are implemented in actual applications, two or more components may be combined into one component, or one component may be subdivided into two or more components as needed. The same reference numerals are assigned to the same or similar components throughout the drawings, and detailed descriptions of the components having the same reference numerals may be omitted instead of being replaced with the descriptions of the above-described components.

Furthermore, the invention encompasses all possible combinations of the embodiments indicated herein. Various embodiments of the present invention are different, but not mutually exclusive. One embodiment of a particular shape, structure, function, and characteristic described herein may be embodied in another embodiment. For example, components mentioned in the first and second embodiments may perform all functions of the first and second embodiments.

Figure 1 is a perspective view showing the overall appearance of the present invention, Figure 2 is an exploded perspective view showing the main configuration of the rotation control unit of the present invention, Figure 3 is a cross-sectional view showing an embodiment of the operation of the rotation control unit of the present invention, Figure 4 is the present invention A cross-sectional view showing another embodiment of the rotation control unit of the, Figure 5 is a schematic diagram showing the main configuration of the cushion unit and the sound filtering unit of the present invention, and Figure 6 is a schematic view showing an embodiment of the cushion unit of the present invention.

1 and 2 , the headrest for a dental unit chair according to an embodiment of the present invention includes a headrest 200 , a rotation control unit 300 , a cushion unit 400 , and a sound filtering unit 500 . can

The headrest for a dental unit chair according to the present embodiment may be mounted on the unit chair 100 .

The unit chair 100 is a chair used for dentistry, and is a medical chair for the purpose of treating a patient. The unit chair 100 may include a backrest 110 whose angle can be adjusted automatically or manually, and a seat 120 on which a patient can sit. The unit chair 100 may optionally include a footrest or the like.

The headrest 200 may be disposed on the upper end of the backrest 110 of the unit chair 100 . The headrest 200 may support the back of the head of a patient seated on the seat 120 . The headrest 200 may rotate around a virtual rotation axis L that is erected in the vertical extension direction of the backrest 110 . When the head needs to be rotated during dental treatment of a patient, if the headrest 200 is rotated, treatment can be performed more easily.

The rotation control unit 300 may be disposed between the backrest 110 and the headrest 200 .

One side of the rotation control unit 300 in the longitudinal direction may be connected to the headrest 200 , and the other side of the rotation control unit 300 may be connected to the backrest 110 . The other side of the rotation control unit 300 may be fixed to the backrest 110 . One side of the rotation control unit 300 may be fastened to the headrest 200 . The headrest 200 may rotate clockwise and counterclockwise based on the rotation control unit 300 . The rotation control unit 300 may control the rotation angle and range of the headrest 200 .

The cushion unit 400 may be disposed on both sides of the headrest 200 on which the back of the head is seated. The cushion unit 400 may be formed to surround a portion of the back of the head of the patient. The cushion unit 400 may be formed to form a constant radius of curvature to support the patient's head. When the backrest 110 is inclined, the patient's head is supported by the cushion unit 400 so that the patient can have psychological stability.

The sound filtering unit 500 may block or eliminate noise (hereinafter, 'target noise') generated during treatment to a user (patient, recipient). The sound filtering unit 500 may include a microphone (not shown), a diaphragm 510 , and a controller 520 . The microphone and the control unit may be disposed at any position, and may be mounted on a headrest for a dental unit chair or disposed separately.

It is preferable that the microphone be placed in a position where the target noise can be well inputted during use. The microphone may convert the target noise into an electrical audio signal. The controller may generate an electrical sound signal for reducing or blocking the target noise based on the audio signal. The diaphragm 510 may receive a sound signal and generate sound or vibration to reduce or block target noise.

The sound signal may mean a signal that allows a target noise to be canceled (noise canceling) or to generate another sound that suppresses the target noise and prevents the recipient from recognizing the target noise.

The sound filtering unit 500 may include a plurality of diaphragms 510 .

The diaphragm 510 may be mounted inside the cushion unit 400 . The diaphragm 510 is preferably arranged to be located at or near the back of the head of the recipient.

The diaphragm 510 may generate sound and/or vibration, in particular, vibration in response to a sound signal received from the controller 520 . The vibration generated by the diaphragm 510 may be transmitted to the back of the patient's head. The patient may recognize the vibration transmitted to the occipital region as a sound like a bone conduction speaker, and may not hear the target noise or hear the suppressed target noise.

Referring to FIG. 2 , the rotation control unit 300 may include a rod 310 , a traction gear 320 , a rotation bearing 330 , a gear housing 340 , and a driving motor 350 .

One side of the rod 310 is connected to the headrest 200 and may be formed to extend to have a predetermined length. The rod 310 may have a cylindrical shape.

The rotation control unit 300 may further include a connection bracket 210 . The connection bracket 210 may be disposed on the rod 310 and the headrest 200 . The connection bracket 210 may cushion the impact when the patient's head is seated on the headrest 200 .

The traction gear 320 is mounted on the other side of the rod 310, the teeth of a plurality of gears may be formed on the circumferential surface.

The rotating bearing 330 may be inserted between the traction gear 320 and the other side of the rod 310 . Due to this, the traction gear 320 may be freely rotated around the rod 310 while maintaining the inserted state in the rod 310 .

2 and 3 , the gear housing 340 may have a shape in which both sides are opened so that the rod 310 passes therethrough. A guide groove 341 drawing a constant radius of curvature may be formed in the open inside of the gear housing 340 so that the traction gear 320 is seated.

The center of the radius of curvature formed by the guide groove 341 may coincide with the central axis on which the headrest 200 rotates. That is, the traction gear 320 moves along the extended radius of the guide groove 341 , and as the traction gear 320 moves, the rod 310 also moves, so that the headrest 200 can be rotated.

The driving motor 350 may brake the power to the traction gear 320 so that the traction gear 320 can move along the guide groove 341 . When the driving motor 350 moves or rotates the traction gear 320 , the traction gear 320 may move along the guide groove 341 , and the traction gear 320 may pull the rod 310 at the same time. Accordingly, the headrest 200 may move to one side or the other side along the radius of curvature of the guide groove 341 . The direction of one side and the other side in which the traction gear 320 moves may be changed according to the rotation direction of the traction gear 320 .

A gear seating groove 342 facing the guide groove 341 may be further formed in the center of the gear housing 340 . The gear seating groove 342 may be formed at a position corresponding to the center of the gear housing 340 , that is, the radius of curvature formed by the guide groove 341 , and the rotational central axis of the headrest 200 .

The rotation control unit 300 may further include a driving gear 360 connected to the driving motor 350 to receive the rotational force of the driving motor 350 . The driving gear 360 is seated in the gear seating groove 342 and rotates, and a plurality of gear teeth engaged with the traction gear 320 may be formed on the outside of the driving gear 360 . As the driving gear 360 rotates, the traction gear 320 may be rotated.

A part of one side of the guide groove 341 may be formed with gear teeth engaged with the gear teeth of the traction gear 320 . Therefore, when the driving gear 360 rotates the traction gear 320, the traction gear 320 may move along the extended groove of the guide groove 341 while rotating in engagement with the gear teeth formed in the guide groove 341. .

Another embodiment of the rotation control unit 300 will be described with reference to FIG. 4 . The rotation control unit 300 may include a sliding rod 370 and a housing 380 .

One side of the sliding rod 370 is connected to the headrest 200 and may be formed to extend to a predetermined length.

A guide groove 381 into which the sliding rod 370 is inserted may be formed in the housing 380 while drawing a constant radius of curvature. The guide groove 381 may accommodate a fluid therein. One side of the housing 380 in the direction in which the sliding rod 370 is inserted may be provided with a separate cap for preventing the fluid from leaking.

The housing 380 may further include first and second fluid passages 382 and 383 formed therein. The first and second fluid passages 382 and 383 may communicate with one side and the other side of the guide groove 381 , respectively.

The housing 380 may further include a hydraulic motor 390 disposed between the first and second fluid passages 382 and 383 to control the movement of the fluid. When the hydraulic motor 390 supplies the fluid to the first fluid flow path 382 or the second fluid flow path 383 , the sliding rod 370 is guided to the guide groove 381 by the hydraulic pressure of the fluid to one side or You can move to the other side. Since the radius of curvature formed by the guide groove 381 is the same as the radius of rotation of the headrest 200, the headrest 200 may rotate to one side or the other.

The rotation of the headrest 200 may be made automatically due to the fluid supply of the hydraulic motor 390 .

Referring to FIG. 5 , the cushion unit 400 may include a seating plate 410 , a rotation bracket 420 , an elastic member 430 , and a stopper 440 .

The seating plate 410 may be formed while drawing a constant radius of curvature so that the diaphragm 510 surrounds a portion of the occipital region and is in close contact with the diaphragm 510 . The seating plate 410 may be provided as a pair symmetrical to each other. The seating plate 410 may include a vacuum plate 510 therein. The seating plate 410 may be disposed in a state in which a portion of the diaphragm 510 is exposed on one surface of the seating plate 410 .

The rotation bracket 420 may be respectively disposed on the lower surface of the pair of seating plates 410 . The rotation bracket 420 may be rotatably connected to one surface of the headrest 200 . Due to this, the seating plate 410 may rotate around the rotation bracket 420 .

The elastic member 430 may be installed as a pair on the rotation bracket 420 so that the seating plate 410 is elastically supported. That is, one side is fixed to the rotation bracket 420 and the other side is fixed to the headrest 200 to elastically support the seating plate 410 . The elastic member 430 may be a coil spring.

When the patient's head is seated on the seating plate 410, the seating plate 410 rotates to surround the back of the patient, and when the patient's head is separated, the seating plate 410 can rotate to an initial position.

The stopper 440 may be formed to protrude from the lower surface of the seating plate 410 . The end of the stopper 440 may be supported by the headrest 200 to limit the rotation range of the seating plate 410 . That is, when the patient's head is separated from the seating plate 410 , the seating plate 410 is rotated to its original position by the elasticity of the elastic member 430 , in which case the stopper 440 moves between the headrest 200 and the seating plate 410 . ) to prevent direct contact and provide a buffering effect.

5 and 6, the seating plate 410 includes a first elastic groove 411 formed on the lower surface, and a second elastic groove 412 formed at a position spaced apart from the first elastic groove 411 by a predetermined distance. can be provided

When the end of the seat plate 410 is in close contact with the back of the head, the first and second elastic grooves 411 and 412 are formed so that the end of the seat plate 410 can be bent in a direction opposite to the rotation direction of the seat plate 410. It may be formed on the lower surface of the seating plate 410 . That is, since the thickness of the seating plate 410 at the position where the first and second elastic grooves 411 and 412 are formed has a thin thickness, when a predetermined pressure is applied to the end of the seating plate 410, the seating plate The end of 410 may be bent. The seating plate 410 may further include third and fourth elastic grooves in addition to the first and second elastic grooves 411 and 412 .

Meanwhile, the depression depth t1 of the first elastic groove 411 may be formed to be deeper than the depression depth t2 of the second elastic groove 412 . This is to allow the bending phenomenon of the seating plate 410 to proceed sequentially. That is, since the size of the head and the shape of the larynx of children and adults are different, the diaphragm 510 exposed to the seating plate 410 is in close contact with the occipital region so that the sound generated from the diaphragm 510 can be smoothly transmitted. .

The headrest for a dental unit chair of the present invention with such a configuration allows the headrest 200 to rotate naturally according to the treatment site to provide comfort to the patient. In addition, there is an advantage in that the sound is well transmitted to the rear and right parts to attenuate the noise generated by the treatment device.

In addition, although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the claims In addition, various modifications may be made by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

100: unit chair 200: headrest
300: rotation control unit 400: cushion unit
500: sound unit

Claims (7)

a headrest (200) disposed on the upper end of the backrest (110) of the unit chair (100), which is a dental chair, and rotating around an imaginary axis of rotation (L) erected in the vertical extension direction of the backrest (110);
a rotation control unit 300 provided between the backrest 110 and the headrest 200 to control a rotation angle of the headrest 200;
a pair of cushion parts 400 provided on one side of the headrest 200 and forming a constant radius of curvature to surround a part of the back of the head; and
The headrest for a dental unit chair comprising a; a sound filtering unit (500) mounted on the inside of the cushion unit (400) including a diaphragm (510) for transmitting the vibration of the sound to the back of the head. The method of claim 1,
The rotation control unit 300,
a rod 310 having one side connected to the headrest 200;
a traction gear 320 mounted on the other side of the rod 310 and having a plurality of gear teeth formed on the circumferential surface;
a rotation bearing 330 provided between the rod 310 and the traction gear 320 so that the traction gear 320 can rotate around the rod 310;
A gear housing 340 in which both sides are opened so that the rod 310 passes through, and a gear guide groove 341 drawing a predetermined radius of curvature is formed so that the traction gear 320 is seated inside the opened; and
A dental unit chair head having; rest. 3. The method of claim 2,
A gear seating groove 342 facing the gear guide groove 341 is further formed in the center of the gear housing 340,
The rotation control unit 300 is further provided with a driving gear 360 seated in the gear seating groove 342 to receive the rotational force of the driving motor 350 to rotate the traction gear 320,
A dental unit chair head further formed with gear teeth meshing with the gear teeth of the traction gear 320 so that the traction gear 320 moves along the gear guide groove 341 on one side of the gear guide groove 341 . rest. The method of claim 1,
The rotation control unit 300,
a sliding rod 370 having one side connected to the headrest 200; and
and a housing 380 into which the sliding rod 370 is inserted, a guide groove 381 for accommodating a fluid therein is formed while drawing a constant radius of curvature;
Inside the housing 380, a first fluid passage 382 and a second fluid passage 383 that communicate with one side and the other side of the guide groove 381, respectively, are formed,
A hydraulic motor 390 provided between the first fluid passage 382 and the second fluid passage 383 to control the movement of the fluid so that the sliding rod 370 moves along the guide groove 381 . ; Headrest for a dental unit chair further comprising. The method of claim 1,
The cushion unit 400 is
a pair of seating plates 410;
a rotation bracket 420 provided on a lower surface of the seating plate 410 and rotatably connected to the headrest 200;
a pair of elastic members 430 having one side fixed to the rotation bracket 420 and the other side fixed to the headrest 200 to elastically support the seating plate 410; and
A headrest for a dental unit chair comprising a; a stopper 440 protruding from the lower surface of the seating plate 410 and having an end supported by the headrest 200 to limit the rotation range of the seating plate 410 . 6. The method of claim 5,
The seating plate 410 is formed while drawing a constant radius of curvature so that the diaphragm 510 surrounds and closely adheres to a part of the occipital part,
When the end of the seating plate 410 is in close contact with the back of the head, the seating plate 410 has a first elastic groove 411 and the first elastic groove 411 spaced apart from each other by a predetermined distance so that it can be bent in the opposite direction. A headrest for a dental unit chair in which the second elastic groove 412 is formed. 7. The method of claim 6,
A headrest for a dental unit chair in which the depression depth of the first elastic groove 411 is deeper than the depression depth of the second elastic groove 412 .

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