JP2021166586A - Self-traveling type dental treatment chair - Google Patents

Abstract

To provide a self-traveling type dental treatment chair which allows a dentist or a staff member of a dental office to easily make a patient sit on the chair in a dental office and to perform a dental treatment by moving the patient into a dental treatment room without using a wheelchair of the patient who visits the dental office.SOLUTION: A self-traveling type dental treatment chair 100 comprises: a contour seat 120 which supports the lower half of the body of a patient; a backrest 110 which is provided in a manner of being freely raised/laid down with respect to the contour seat 120 and supports the upper half of the body of the patient; a base frame 130 which is provided on the lower side of the contour seat 120; travel wheels 140 which are provided on the lower side of the base frame 130 and travel on the floor surface in a dental office; a drive device 170 which is provided in the base frame 130 and drives the travel wheels 140; a control device 190 which performs drive control of the drive device 170 in a seating posture state in which the backrest 110 is raised; and an operation device 150 which is provided on the back surface of the backrest 110 and transmits a control signal to the control device 170.SELECTED DRAWING: Figure 2

Description

The present invention relates to a self-propelled dental clinic chair that is self-propelled.

Due to the progress of the aging society in recent years, the proportion of elderly patients and patients with gait disorders who visit dental clinics is increasing.
When a patient using such a wheelchair comes to the dental clinic in a wheelchair, the dentist or the staff of the dental clinic moves the wheelchair to the vicinity of the dental clinic in the dental clinic. In some cases, it is necessary to transfer from a wheelchair to a dental clinic (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 9-94274

However, a wheelchair as disclosed in Patent Document 1 is not equipped with various driving functions sufficient to move a narrow passage in a dental clinic where many various medical facilities are arranged, and is simply a dentist. Or, there is only a handle for the dental clinic staff, and in the case of a weak dentist or dental clinic staff, it is necessary to carry the total weight of the patient and the wheelchair alone when traveling, so the dental clinic There was a problem that it was difficult to climb a slope or cross a step when moving inside.

Therefore, the present invention solves the problems of the prior art as described above, that is, the object of the present invention is dentistry in a dental clinic without using a wheelchair of a patient who visits the dental clinic by car or the like. It is to provide a self-propelled dental clinic chair that allows a doctor or a dental clinic staff to easily transfer a patient and perform dental treatment while moving the patient to the dental clinic.

The invention according to claim 1 is a contour sheet that supports the lower body of the patient, a backrest that is foldably provided on the contour sheet to support the upper body of the patient, and a base that is provided below the contour sheet. A self-propelled dental clinic chair provided with a frame, traveling wheels provided below the base frame and traveling on the floor surface in the dental clinic, and a driving device provided on the base frame to drive the traveling wheels. It is provided with a control device for driving and controlling the drive device in a sitting position with the backrest upright, and a control device provided on the back surface of the backrest for transmitting a control signal to the control device. This solves the above-mentioned problems.

In addition to the configuration of the self-propelled dental clinic chair according to claim 1, the self-propelled dental clinic chair according to claim 2 has an advancing / retreating operation unit in which the control device operates the advancing or retreating of the traveling wheels. By doing so, the above-mentioned problems are solved.

The self-propelled dental treatment chair according to claim 3 has the configuration of the self-propelled dental treatment chair according to claim 1 or 2, and the traveling wheels are steerable from at least one steering wheel to the left and right. The above-mentioned problem is further solved by the fact that the drive device is provided with a direction changing portion that changes the traveling direction of the steering wheel to the left or right based on the left-right rotation of the control device.

In the self-propelled dental clinic chair according to claim 4, in addition to the configuration of the self-propelled dental clinic chair according to any one of claims 1 to 3, the control device raises or raises the contour seat. It has an elevating operation unit for lowering, and when the base frame operates the elevating operation unit by stopping the base portion, the elevating part provided at an upper position of the base portion, and the traveling wheel, the elevating part is operated. By providing an elevating mechanism for elevating and lowering the chair, the above-mentioned problems are further solved.

In the self-propelled dental clinic chair according to claim 5, in addition to the configuration of the self-propelled dental clinic chair according to claim 4, the base frame includes a spitton connection portion that can be energized with a spiton, and the backrest is provided. The above-mentioned problems are further solved by having an auxiliary operation unit that raises or lowers the contour sheet when the spitton and the spitton connecting portion are energized.

In the self-propelled dental clinic chair according to claim 6, in addition to the configuration of the self-propelled dental clinic chair according to any one of claims 1 to 4, the backrest is the mounting position of the control device. By providing a mounting position adjusting mechanism for adjusting the chair up and down, the above-mentioned problems are further solved.

According to the self-propelled dental clinic chair of the present invention, a contour seat that supports the lower body of the patient, a backrest that is vertically provided on the contour seat to support the upper body of the patient, and a bottom of the contour seat. The patient is provided with a base frame provided, a traveling wheel provided below the base frame and traveling on the floor surface in the dental clinic, and a driving device provided on the base frame to drive the traveling wheel. Not only can it be carried on its own, but it also exhibits the effects peculiar to the present invention due to the following configuration peculiar to the present invention.

According to the self-propelled dental clinic chair of the invention according to claim 1, the control device for transmitting the control signal to the control device is provided on the back surface of the backrest, so that the dentist or the dental clinic staff can use the backrest. Since the self-propelled dental chair can be operated from the back side of the patient, the self-propelled dental chair can be moved in the dental clinic even if the patient cannot operate it by himself / herself, so-called hospitality for the patient. It can exert its function.

In addition, since the control device that drives and controls the drive device in the sitting posture with the backrest upright is provided, the drive device does not drive even if the control device is erroneously operated in the medical treatment state where the backrest is tilted. It is possible to prevent unexpected accidents such as displacement of the medical treatment site, which tends to occur when the self-propelled dental treatment chair moves during medical treatment.

According to the self-propelled dental clinic chair of the invention of claim 2, in addition to the effect of the invention of claim 1, the control device has an advancing / retreating operation unit for operating the advancing or retreating of the traveling wheel. As a result, the self-propelled dental clinic chair moves forward or backward only by the dentist or the dental clinic staff operating the forward or backward instruction to the advancing / retreating operation part of the control device, so that the self-propelled dental clinic can easily move forward or backward. The running dental clinic chair can be moved.

More specifically, the control device causes the drive device to rotate the traveling wheel forward when the advancing / retreating operation unit is rotating in the first direction from the predetermined position, and the advancing / retreating operation unit moves from the predetermined position to the second direction. By performing drive control that causes the drive device to rotate the traveling wheels backward while rotating, the dentist or dental clinic staff can operate the advance / retreat operation unit by rotating the advancing / retreating operation unit with one hand to stop, advance, or retreat. Therefore, the dentist or the dental clinic staff can easily move the self-propelled dental clinic chair in the dental clinic while caring for the patient or carrying luggage with the other hand.

According to the self-propelled dental clinic chair of the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the traveling wheel is composed of at least one steering wheel that can be steered to the left and right. The drive device is provided with a direction changing portion that changes the traveling direction of the steering wheel to the left or right based on the left-right rotation of the control device, so that the self-propelled dental clinic chair is provided in the direction in which the steering wheel is rotated. In order to proceed, the direction of the self-propelled dental clinic chair can be easily changed in the dental clinic.

More specifically, the control device rotates the steering wheel to the right in the direction changing portion when the control device rotates from the predetermined position to the right, and changes the direction when the control device rotates from the predetermined position to the left. By controlling the direction in which the steering wheel is rotated counterclockwise, the dentist or the staff of the dental clinic can instruct the traveling direction of the self-propelled dental clinic chair by operating the rotation operation unit with only one hand. Alternatively, the dental clinic staff can easily turn the self-propelled dental clinic chair in the dental clinic while caring for the patient or carrying luggage with the other hand.

According to the self-propelled dental clinic chair of the invention of claim 4, in addition to the effects of the inventions of claims 1 to 3, the control device has an elevating operation unit for raising or lowering the contour seat. However, the base frame is provided with a base portion, an elevating portion provided above the base portion, and an elevating mechanism for elevating and lowering the elevating portion when the traveling wheel is stopped and the elevating operation portion is operated. As a result, the elevating mechanism raises and lowers the seat portion with respect to the base frame, so that the patient's body can be lifted to an appropriate height when getting into a car for returning home after medical treatment.

More specifically, the control device executes the elevating control only when the traveling wheel is stopped, so that the contour seat does not elevate while the self-propelled dental clinic chair is moving. It is possible to prevent an unexpected accident caused by raising and lowering the contour seat by erroneously operating the elevating operation unit while moving the self-propelled dental clinic chair.

Further, when the control device raises the elevating unit to the elevating mechanism when the elevating operation unit is rotating from the predetermined position in the first direction, and the elevating operation unit is rotating in the second direction from the predetermined position. By performing elevating control to lower the elevating part to the elevating mechanism, the elevating mechanism is controlled only by operating the elevating operation part. The patient's body can be lifted to an appropriate height by itself.

According to the self-propelled dental clinic chair of the invention of claim 5, in addition to the effect of the invention of claim 4, the base frame is provided with a spitton connection portion that can be energized with the spitton. In order to make an electrical connection with, the elevating mechanism can be operated and the power supply battery can be charged by supplying power from the spitton.

In addition, since the backrest has an auxiliary operation unit that raises or lowers the contour seat when the spitton and the spitton connection portion are energized, the auxiliary operation unit is a dentist regardless of whether the control device is up or down. Alternatively, since it is always exposed to the staff of the dental clinic, even if the control device is accommodated in the handle accommodating recess and the backrest is tilted during medical treatment, the auxiliary operation portion can be operated to raise and lower the seat portion.

More specifically, the control device raises and lowers the elevating mechanism according to the instruction operation to the auxiliary operation unit only when the spitton connection portion is electrically connected to the spitton, whereby the spitton connection portion is spitton. When the auxiliary operation unit is not connected to, the contour seat does not move up and down even if the auxiliary operation unit is operated. It is possible to prevent unexpected accidents that occur when the contour seat moves up and down.

According to the self-propelled dental clinic chair of the invention of claim 6, in addition to the effects of the inventions of claims 1 to 5, the backrest adjusts the mounting position of the control device up and down. By providing an adjustment mechanism, the control device can be moved up and down with respect to the backrest, so it is possible to set the control device to a height that makes it easy to control according to the height of the dentist or dental clinic staff. can.

A perspective view of the state in which the self-propelled dental clinic chair of the present invention is arranged close to the spitton from the front side of the chair. A perspective view of the state in which the self-propelled dental clinic chair of the present invention is arranged close to the spitton from the back side of the chair. FIG. 6 is a schematic view showing the configuration of the back side of the backrest in the self-propelled dental clinic chair of FIG. FIG. 3A is a cross-sectional view taken along the line AA of FIG. 3 for explaining the operation of the operation handle used in the present invention. FIG. 3 is a cross-sectional view taken along the line BB of FIG. 3 for explaining the raising / lowering operation and the mounting position adjusting operation of the operation handle used in the present invention. The schematic diagram for demonstrating the raising and lowering motion of a backrest and the raising and lowering motion of a contour seat in the self-propelled dental clinic chair of this invention. The block diagram for showing the function and operation of the elevating mechanism used in this invention. The bottom view of the self-propelled dental clinic chair shown in FIG. The explanatory view which shows the elevating operation of the self-propelled dental treatment chair of this invention. The explanatory view which shows the elevating operation of the self-propelled dental treatment chair of this invention. The block diagram which shows the control relation in the self-propelled dental treatment chair of this invention.

The self-propelled dental clinic chair of the present invention is provided at a contour seat that supports the lower body of the patient, a backrest that is foldably provided on the contour seat to support the upper body of the patient, and a position below the contour seat. The base frame, the traveling wheels provided below the base frame to run on the floor in the dental clinic, the driving device provided on the base frame to drive the traveling wheels, and the sitting posture with the backrest upright. It is equipped with a control device that drives and controls the drive device in a state, and a control device that is provided on the back of the backrest and transmits a control signal to the control device. Any specific embodiment may be used as long as the dentist or the staff of the dental clinic can easily transfer the patient and perform the dental treatment while moving the patient to the dental clinic.

For example, the specific installation position of the control device used in the self-propelled dental clinic chair of the present invention may be built in any of the contour seat, the backrest, and the drive device.

Further, the operation of raising and lowering the backrest, which rotates freely between the sitting posture state in which the contour seat is upright and the medical treatment posture state in which the contour seat is tilted, may be manually performed.

Hereinafter, the self-propelled dental clinic chair 100 of this embodiment will be described with reference to FIGS. 1 to 10.
Here, FIG. 1 is a perspective view of the state in which the self-propelled dental clinic chair of the present invention is arranged close to the spitton from the front side of the chair, and FIG. 2 is a perspective view of the self-propelled dental clinic chair of the present invention. It is a perspective view of the state of being placed close to the spitton from the back side of the chair, FIG. 3 is a schematic view showing the configuration of the back side of the backrest in the self-propelled dental clinic chair of FIG. 2, and FIG. 4 is a schematic view. 3A is a cross-sectional view taken along the line AA for explaining the operation of the operation handle used in the present invention, and FIG. 5 is for explaining the raising / lowering operation and the mounting position adjusting operation of the operation handle used in the present invention. 3 is a sectional view taken along the line BB of FIG. 3, FIG. 6 is a schematic view for explaining the raising / lowering motion of the backrest and the raising / lowering motion of the contour seat in the self-propelled dental clinic chair of the present invention. Is a block diagram for showing the function and operation of the elevating mechanism used in the present invention, FIG. 8 is a bottom view of the self-propelled dental clinic chair shown in FIG. 1, and FIG. 9A is the self-propelled chair of the present invention. It is explanatory drawing which shows the elevating operation of the running-type dental treatment chair, FIG. 9B is the explanatory view which shows the elevating operation of the self-propelled dental treatment chair of this invention, and FIG. 10 is the self-propelled dental treatment of this invention. It is a block diagram which shows the control relation in a chair.

As shown in FIGS. 1, 2 and 6, the self-propelled dental clinic chair 100 has a base frame 130 facing the floor surface F and traveling on the floor surface F attached below the base frame 130. The wheels 140, the contour seat 120 arranged on the base frame 130, the backrest 110 arranged so as to be tiltable with respect to the contour seat 120, and various operations provided on the back side of the backrest 110. Various operations of the operation handle 150 that receives support, the handle accommodating recess 160 that accommodates the operation handle 150, the elevating mechanism 180 that raises and lowers the contour seat 120 or the entire self-propelled dental clinic chair 100, and the self-propelled dental clinic chair 100. It is provided with a control device 190 for controlling the above.

<Contour sheet>
The contour seat 120 includes a seat portion 121 arranged substantially horizontally with respect to the floor surface F to support the patient's buttocks, a leg rest portion 122 provided in front of the seat portion 121 to support the patient's legs, and a leg. It has a foot rest portion 123 that is provided below the rest portion 122 and supports the patient's foot, and these form a contour seat 120 that supports the lower body of the patient.

Behind the seat portion 121 that constitutes the contour seat 120, a backrest 110 that supports the back of the patient is installed so as to be vertically retractable with respect to the seat portion 121 of the contour seat 120.

<Backrest>
The backrest 110 includes a backrest portion 111 that supports the back of the patient, a headrest portion 112 that supports the head of the patient, an armrest portion 113 that supports the arm of the patient, and raising and lowering of the contour seat 120 and the backrest 110. It includes an auxiliary operation unit 114 for instructing and controlling the tilting, a back surface portion 115 on the opposite side of the backrest portion 111, and a backrest tilting sensor unit 116.

The auxiliary operation unit 114 is provided on the side surface of the backrest, and includes a seat ascending instruction button 114a, a seat lowering instruction button 114b, a backrest standing instruction button 114c, and a backrest tilting instruction button 114d.

When the seat ascending instruction button 114a is pressed, the auxiliary operation unit 114 transmits an ascending signal for ascending the contour seat 120 to the control device 190 via the elevating unit 131 constituting the base frame 130 described later.
When the seat lowering instruction button 114b is pressed, the auxiliary operation unit 114 transmits a lowering signal for lowering the contour seat 120 to the control device 190 via the elevating unit 131 constituting the base frame 130 described later.

When the backrest standing instruction button 114c is pressed, the auxiliary operation unit 114 transmits the backrest standing signal to the control device 190. When the backrest tilt instruction button 114d is pressed, the auxiliary operation unit 114 transmits the backrest tilt signal to the control device 190.

The backrest 110 is configured to rotate freely by means of a tilting means (not shown) between a sitting posture standing upright with respect to the contour seat 120 and a tilted medical treatment posture.

When the backrest 110 is in a tilted medical posture with respect to the contour seat 120, the backrest tilt sensor unit 116 does not transmit the sitting posture signal to the control device 190.
When the backrest 110 is in a sitting posture standing upright with respect to the contour seat 120, the backrest tilting sensor unit 116 transmits a sitting posture signal to the control device 190.

The headrest portion 112 is housed in a region in which the upper end of the backrest 110 is recessed downward, and the headrest portion 112 can be manually moved up and down with respect to the backrest 110.

The leg rest portion 122 is separated from the floor surface F.
The footrest portion 123 is also separated from the floor surface F like the leg rest portion 122, and is substantially horizontal to the floor surface F in the sitting posture.

As shown in FIGS. 2 to 5, in the handle accommodating recess 160 described later provided in the back portion 115 of the backrest 110, the operation handle 150 is used as a control device for operating the self-propelled dental clinic chair 100. Is provided so that it can be tilted up and down.

<Operation handle>
The operation handle 150 is provided on both sides of the handle main body portion 151, the grip portion 153 arranged at the tip of the handle main body portion 151, and the grip portion 153, and instructs the self-propelled dental clinic chair 100 to move forward and backward. The advance / retreat throttle unit 152R as the advance / retreat operation unit, the elevating throttle unit 152L as the elevating operation unit for instructing the elevating operation of the elevating unit 131, and the handle tilting shaft portion 155 which is the center of rotation during the tilting operation of the operation handle 150. , The bush portion 154 that supports the handle tilting shaft portion 155 so as to be steerable, the direction change shaft portion 156 that is the center of rotation when the operation handle 150 is rotated left and right, and the operation handle 150 that is connected to the direction change shaft portion. A direction change sensor unit 157 that detects the left-right rotation of the steering wheel, a spiral spring 158 as a pop-out prevention mechanism, and a handle tilt sensor unit 159 that detects whether the operation handle 150 is in the accommodation position or the steering position. I have.

The operation handle 150 is configured to rotate freely with the handle tilting shaft portion 155 horizontally supported by the bush portion 154 as a rotation axis.

The operation handle 150 is close to horizontal with the accommodation position accommodated in the handle accommodation recess 160 of the backrest 110 as shown in FIGS. 3 to 5 in the seated posture in which the backrest 110 stands upright with respect to the seat portion 121. It is configured so that it can be tilted back and forth between the steering position and the steering position, which is rotated so as to tilt backward to an angle.

The operation handle 150 is further provided with a coil spring 158 as a pop-out prevention mechanism and is spring-forced in a direction of returning to the accommodation position. It is configured so that it does not easily jump out to the steering position.

The handle tilt sensor unit 159 arranged in the handle body portion 151 detects whether the operation handle 150 is accommodated in the handle accommodating recess 160 and is in the accommodating position, or jumps out to the rear and is in the maneuvering position.
The steering wheel tilt sensor unit 159 transmits a maneuverable signal to the control device 190 when the operation handle 150 is in the control position.

The advance / retreat throttle unit 152R as the advance / retreat operation unit projects from the right side surface of the grip portion 153 arranged at the tip of the handle body portion 151 and is rotatable in the front-rear direction, and receives an instruction operation for advancing or retreating.

When the advance / retreat throttle unit 152R is rotated in the front-rear direction, the operation handle 150 transmits an advance / retreat control signal to the control device 190.

More specifically, when the advance / retreat throttle unit 152R is rotated forward, the operation handle 150 transmits an advance signal for advancing the self-propelled dental clinic chair 100 to the control device 190.

Further, when the advance / retreat throttle unit 152R is rotated rearward, the operation handle 150 transmits a retreat signal for retreating the self-propelled dental clinic chair 100 to the control device 190.

The elevating throttle portion 152L as the elevating operation portion projects from the left side surface of the grip portion 153 arranged at the tip of the handle main body portion 151 and is rotatable in the front-rear direction, and receives an instruction operation for elevating and lowering.

When the elevating throttle unit 152L is rotated in the front-rear direction, the operation handle 150 transmits an elevating control signal to the control device 190.

More specifically, when the elevating throttle portion 152L is rotated forward, the operation handle 150 transmits an ascending signal for ascending the seat portion 121 to the control device 190 via the elevating portion 131.

Further, when the elevating throttle portion 152L is rotated rearward, the operation handle 150 transmits a descending signal for lowering the contour seat 120 to the control device 190 via the elevating portion 131.

The bush portion 154 is fitted to the handle mounting plate portion 163 constituting the handle accommodating recess 160 so as to be steerable left and right, and when the operation handle 150 projects rearward and is in the steering position, the operation handle 150 is left and right. When it is rotated, it rotates left and right in conjunction with the operation handle 150.

When the operation handle 150 is rotated left and right, the direction changing shaft portion 156 rotates in conjunction with the operation handle 150.
The rotation operation of the operation handle 150 is detected by the direction change sensor unit 157 via the direction change shaft unit 156.

When the direction change sensor unit 157 detects the rotation of the operation handle 150, the direction change sensor unit 157 transmits a direction control signal to the control device 190.

More specifically, when the operation handle 150 is rotated to the right from the initial position, the direction change sensor unit 157 transmits a right rotation signal to the control device 190.

When the operation handle 150 is rotated to the left, the direction change sensor unit 157 detects this and transmits a left rotation signal to the control device 190.

<Handle storage recess>
The handle accommodating recess 160 is provided on the back surface 115 of the backrest 110 for accommodating the operation handle 150, and includes a handle accommodating recess 161 extending in the depth direction along the edge of the handle accommodating recess 160. It includes a rail portion 162 for vertical adjustment as a mounting position adjusting mechanism, a handle mounting plate portion 163, and a damper portion 164 as a shock absorbing mechanism.

The handle accommodating recess side wall portion 161 is provided with a pair of left and right vertical adjustment rail portions 162, and the handle mounting plate portion 163 is engaged with the pair of left and right vertical adjustment rail portions 162 so as to be vertically movable and mounted. It constitutes an adjustment mechanism.

The position of the handle mounting plate portion 163 can be adjusted up and down along the up and down adjustment rail portion 162 in an operable state in which the operation handle 150 projects backward.

The damper portion 164 as a shock absorbing mechanism is provided at a position where it comes into contact with the grip portion 153 when the operating handle 150 is returned to the accommodating position, and the operating handle 150 urged by the coil spring 158 accommodates the handle. Absorbs the impact when hitting the recess 160.

The shape of the handle accommodating recess 160 is set according to the shape of the operation handle 150.

Specifically, in the handle accommodating recess 160, when the operation handle 150 is accommodated, the advance / retreat throttle portions 152R and the elevating throttle portion 152L provided on the left and right sides of the operation handle 150 are located between the handle accommodating recess side wall portion 161. The shape has a clearance dimension CO1 for the throttle portion, and the grip portion 153 has a gap dimension CO2 for the grip portion between the grip portion 153 and the side wall portion 161 of the handle accommodating recess.

<Base frame>
The base frame 130 has a base portion 132 and an elevating portion 131 that is vertically arranged on the base portion 132.

The base portion 132 further includes a spitton connecting portion 132a provided at the front end and including an electrode socket portion 132b that is provided at the front end and is electrically connected to the spitton S described later.

The electrode socket portion 132b is provided so as to open upward, and can be electrically connected to the electrode plug portion S10b formed downward from the connection arm portion S10a of the spiton S.

<Running wheels>
As shown in FIGS. 1, 2, 6, and 8, the traveling wheels 140 have drive wheels 141 arranged at both front corners on the lower surface side of the base portion 132, and steering wheels arranged at the rear center. It includes a wheel 142 and a drive shaft 141a that connects each of the two front drive wheels 141.

<Drive device>
The drive device 170 powers the travel drive motor 172 for rotating the drive wheels 141, the transmission belt portion 173 that transmits the rotation of the travel drive motor 172 to the drive shaft 141a on the front side, and the travel drive motor 172. It is equipped with a power supply battery 171 to supply.

As described above, the self-propelled dental clinic chair 100 is provided with the traveling wheels 140 and the driving device 170, so that the self-propelled dental clinic chair 100 can be electrically traveled on the floor surface.

<Elevating mechanism>
The elevating mechanism 180 includes an elevating motor unit 181, a pump unit 182, a tank unit 183, a solenoid valve unit 184, and a jack unit 185.

The tank portion 183 includes a ram portion 183a, a pump case portion 183b, and a storage region portion 183c, and the solenoid valve portion 184 includes a first solenoid valve portion 184a, a second solenoid valve portion 184b, a third solenoid valve portion 184c, and a solenoid valve portion 184. It is composed of a fourth solenoid valve portion 184d.

As shown in FIG. 8, a total of four jack portions 185 are arranged on the bottom surface side of the base portion 132, and land in place of the traveling wheels 140.

As shown in FIGS. 9A and 9B, the jack portion 185 is placed on a hollow guide bush portion 185a inserted into the opening formed in the bottom plate portion 132c of the base portion 132 and the guide bush portion 185a. It has a hydraulic cylinder 185b and a contact pad 185c connected to the tip of the hydraulic cylinder 185b and facing the floor surface F.

The elevating portion 131 is vertically movable with respect to the base portion 132, and is provided at the elevating motor portion 181 provided on the base portion 132 and the central portion of the base portion 132 when viewed from the bottom surface to allow oil to flow. It has a stored tank portion 183, a pump case portion fixed on the accommodation area portion 183c of the tank portion 183, and a ram portion 183a provided in the central portion of the pump case portion 183b.

In the tank section 183, a rectangular tank section chamber in a plan view is fixed to the central portion of the tank base having a substantially circular shape in a plan view, and oil used for raising and lowering the self-propelled dental clinic chair 100 is contained in the tank section. It is stored.

In the pump case portion 183b, a circular oil introduction chamber is fixed in a plan view to the central portion of the leg portion extending in the front-rear direction of the bottom plate portion 132c.

The tank portion 183 and the pump case portion 183b are connected by an oil flow path, and the seat portion 121 of the contour sheet 120 is fixed above the ram portion 183a.

<Control device>
As shown in FIG. 10, the control device 190 controls various operations of the self-propelled dental clinic chair 100 in response to various input signals.

<Spitton>
Although it does not constitute the self-propelled dental clinic chair 100, the Spitton S used in the dental clinic and electrically connected to the self-propelled dental clinic chair 100 will be described.

The spitton S is driven by electric power from a commercial power supply supplied to the spitton S, and has a spitton main body S10 having a built-in power supply, a water supply source, etc. It has a bowl portion S11 that receives gargled water.

The spitton main body S10 has a rectangular parallelepiped shape, and a connecting arm portion S10a extending toward the side of the spitton S (self-propelled dental clinic chair 100 side) is formed at the bottom thereof.

An electrode plug portion S10b (see FIG. 9A) is provided on the lower surface of the connection arm portion S10a.

<System configuration>
Next, the system configuration of the self-propelled dental clinic chair 100 configured in this way will be described with reference to FIG.

The control device 190 includes an advance / retreat throttle unit 152R as an advance / retreat operation unit, an elevating throttle unit 152L as an elevating operation unit, a handle tilt sensor unit 159, a direction change sensor unit 157, a backrest tilt sensor unit 116, and an auxiliary operation unit 114. , The traveling drive motor 172, the direction changing motor portion 174, the elevating motor portion 181 and the solenoid valve portion 184 provided in the base portion 132 are electrically connected.

With this configuration, the control device 190 receives a direction change amount signal from the direction change sensor unit 157, a handle tilt signal from the handle tilt sensor unit 159, and a forward signal and a reverse signal as advance / retreat control signals from the operation handle 150. In addition, an ascending signal and a descending signal as an ascending / descending signal are transmitted, an ascending / descending signal as an ascending / descending signal, and a backrest standing signal and a backrest tilting signal as a backrest tilting signal are transmitted from the auxiliary operation unit, respectively, and the control device. Entered in 190.

Further, the control device 190 controls the traveling drive motor 172, the direction changing motor unit 174, the elevating motor unit 181 and the solenoid valve unit 184, respectively, according to various received signals.

First, the electric running of the self-propelled dental clinic chair 100 using the operation handle 150 will be described. Hereinafter, a case where the patient is sitting on the self-propelled dental clinic chair 100 and the dentist or the dental clinic staff instructs the self-propelled dental clinic chair 100 to operate will be described.

<Advance / retreat control>
When the advance / retreat throttle unit 152R of the operation handle 150 is in the initial position, the drive device 170 does not drive the traveling drive motor 172 or stops the drive because the drive signal is not transmitted from the operation handle 150 to the control device 190. As a result, the drive wheel 141 does not rotate, and the self-propelled dental clinic chair 100 stands still.

When the advance / retreat throttle unit 152R is rotated forward or backward from the initial position, an advance / retreat control signal is transmitted from the operation handle 150 to the control device 190.

The control content of the control device 190 with respect to the advance / retreat control signal changes depending on the presence or absence of input of the sitting posture signal transmitted from the backrest tilt sensor unit 116 to the control device 190.

The backrest tilt sensor unit 116 transmits a sitting posture signal to the control device 190 when the backrest 110 is in a sitting posture standing upright with respect to the contour seat 120, but the backrest 110 is sent to the contour seat 120. On the other hand, if the patient is in a leaning posture, the sitting posture signal is not transmitted.

The control device 190 receives a forward signal or a backward signal when the sitting posture signal is not transmitted from the backrest tilt sensor unit 116, that is, when the backrest 110 is in a tilted medical posture with respect to the contour seat 120. Is input, it is ignored and advance / retreat control is not executed.

That is, the control device 190 drives the traveling drive motor 172 and controls the self-propelled dental clinic chair 100 to move forward or backward only when the backrest 110 is in the upright sitting posture with respect to the contour seat 120. ..

This is to prevent the occurrence of an accident due to the self-propelled dental clinic chair 100 being carelessly moved due to an erroneous operation or the like during the medical treatment in which the backrest 110 is in the medical treatment posture.

When the advance / retreat throttle unit 152R of the operation handle 150 is rotated forward from the initial position, a forward signal is transmitted from the operation handle 150 to the control device 190.

The control device 190 that has received the forward signal drives and controls the traveling drive motor 172 to rotate the drive wheels 141 only when the sitting posture signal is input from the backrest tilt sensor unit 116, and is self-propelled. The dental clinic chair 100 is rotated so as to move forward.

When the forward / backward throttle unit 152R of the operation handle 150 is rotated backward from the initial position, a backward signal is transmitted from the operation handle 150 to the control device 190.

The control device 190 that has received the reverse signal drives and controls the traveling drive motor 172 to rotate the drive wheels 141 only when the sitting posture signal is input from the backrest tilt sensor unit 116, and is self-propelled. Rotate the dental clinic chair 100 so that it retracts.

<Direction control>
When the operation handle 150 is tilted backward to project and is in the initial position in the maneuverable state, the direction control signal is not transmitted from the operation handle 150 to the control device 190, so that the drive device 170 causes the direction change motor unit 174. The self-propelled dental clinic chair 100 goes straight without being driven or with the steering wheel 142 returned to the initial direction.

When the operation handle 150 is rotated to the right from the initial position, the direction change sensor unit 157 detects this and transmits a right rotation signal as a direction control signal to the control device 190. The control device 190 that has received the right rotation signal drives the direction change motor unit 174 as the direction change unit to rotate the steering wheel 142 to the right from the initial position.

When the operation handle 150 is rotated to the left, the direction change sensor unit 157 detects this and transmits a left rotation signal as a direction control signal to the control device 190.
The control device 190 that has received the right rotation signal drives the direction change motor unit 174 as the direction change unit to rotate the steering wheel 142 to the left.

Therefore, by operating the operation handle 150, the moving self-propelled dental clinic chair 100 can be turned in either the left or right direction.

<Up and down operation by the operation handle>
Next, with reference to FIG. 7, the elevating portion 131 of the self-propelled dental clinic chair 100 (that is, the elevating and lowering of the contour seat 120) will be described.

When the elevating throttle portion 152L of the operating handle 150 is rotated forward from the initial position, an ascending signal is transmitted from the operating handle 150 to the control device 190, while the elevating throttle portion 152L of the operating handle 150 is rotated rearward from the initial position. Then, a descending signal is transmitted from the operation handle 150 to the control device 190.

The control content of the control device 190 with respect to the ascending signal and the descending signal transmitted from the operation handle 150 changes depending on the presence or absence of the advance / retreat control signal input to the control device 190.

While receiving the advance / retreat control signal from the operation handle 150, the control device 190 ignores the input ascending signal and descending signal, and performs elevating control for ascending or descending the contour seat 120 via the elevating unit 131. Do not execute.

This is to prevent the occurrence of an accident due to the contour seat 120 being inadvertently raised or lowered while the self-propelled dental clinic chair 100 is moving forward or backward.

Further, when the control device 190 does not receive the advance / retreat control signal from the operation handle 150, the control device 190 receives the input of the ascending signal or the descending signal transmitted from the auxiliary operation unit 114, as in the case where the control device 190 is transmitted from the operating handle 150. Control is performed to raise or lower the contour sheet 120 via the elevating unit 131.

Therefore, the control device 190 controls the elevating mechanism 180 only when the advancing / retreating control signal is not received, that is, when the self-propelled dental clinic chair 100 is stopped.

When the elevating throttle portion 152L of the operating handle 150 is rotated forward from the initial position in order to raise the elevating portion 131, an ascending signal is transmitted from the operating handle 150 to the control device 190.

The control device 190 that has received the ascending signal opens the first solenoid valve portion 184a of the solenoid valve portion 184 and drives the elevating motor portion 181 to drive the pump portion 182 only when the advance / retreat control signal is not received. Let me.

As a result, the oil in the tank portion 183 is sent into the pump case portion 183b at a predetermined pressure and is added to the ram portion 183a, and the contour sheet 120 is raised via the elevating portion 131.

When the elevating throttle portion 152L of the operating handle 150 is rotated backward from the initial position in order to lower the elevating portion 131, a descending signal is transmitted from the operating handle 150 to the control device 190.

The control device 190 that has received the descending signal opens the second solenoid valve portion 184b of the solenoid valve portion 184 and drives the elevating motor portion 181 only when the advancing / retreating control signal is not received.

As a result, the oil in the pump case portion 183b is pushed downward by the weight of the elevating portion 131, the contour sheet 120, etc., and the oil discharged from the pump case portion 183b passes through the second solenoid valve portion 184b to the tank portion 183. Returning, the contour sheet 120 descends via the elevating portion 131.

<Up and down operation by auxiliary operation unit>
When the seat ascending instruction button 114a is pressed, the auxiliary operation unit 114 provided on the backrest 110 transmits an ascending signal to the control device 190, and when the seat lowering instruction button 114b is pressed, the descending signal is transmitted to the control device.

Further, the control content of the control device 190 with respect to the ascending signal and the descending signal transmitted from the auxiliary operation unit 114 changes depending on whether or not the Spitton S described later and the self-propelled dental clinic chair 100 are electrically connected. ..

When the Spitton S and the self-propelled dental clinic chair 100 are not electrically connected, the control device 190 ignores the ascending signal and the descending signal and does not perform the ascending / descending control for ascending or descending the elevating unit 131.

This is to prevent an accident due to the contour seat 120 being inadvertently raised or lowered before the self-propelled dental clinic chair 100 is electrically connected to the Spitton S for treatment. be.

Further, when the Spitton S and the self-propelled dental clinic chair 100 are electrically connected, the control device 190 receives the input of the ascending signal or the descending signal transmitted from the auxiliary operation unit 114, and the operation handle 150. Control is performed to raise or lower the contour sheet 120 via the elevating unit 131 as in the case of transmission from.

That is, the control device 190 controls the elevating mechanism up and down only when it is electrically connected to the spiton S.

<Elevating mechanism>
Next, the elevating mechanism of the self-propelled dental clinic chair 100 configured in this way (elevation of the elevating portion 131 with respect to the base portion 132 and elevating of the self-propelled dental clinic chair 100 with respect to the floor surface F) is shown in FIG. 6 to 10 will be described.

First, the elevating and lowering of the elevating portion 131 with respect to the base portion 132 will be described.

As shown in FIG. 7, the elevating unit 131 is a first solenoid valve connected to a pump unit 182 driven by an elevating motor unit 181 and a downstream side of the pump unit 182 to open and close a flow path to a ram portion 183a. It further has a portion 184a and a second solenoid valve portion 184b connected to the downstream side of the ram portion 183a to open and close the flow path to the tank portion 183.

When raising the contour seat 120, the first solenoid valve portion 184a is opened and the elevating motor portion 181 drives the pump portion 182.
As a result, the oil in the tank portion 183 is sent into the pump case portion 183b at a predetermined pressure and is added to the ram portion 183a, and the contour sheet 120 rises together with the elevating portion 131.

When lowering the contour sheet 120, the driving of the pump portion 182 is stopped and the second solenoid valve portion 184b is opened with the first solenoid valve portion 184a closed.

As a result, the oil in the pump case portion 183b is pushed downward by the weight of the contour sheet 120 and the elevating portion 131, and the oil discharged from the pump case portion 183b returns to the tank portion 183 through the second solenoid valve portion 184b. , The contour sheet 120 descends together with the elevating portion 131.

<Elevating and lowering the entire self-propelled dental clinic chair>
Next, the raising and lowering of the entire self-propelled dental clinic chair 100 with respect to the floor surface F will be described with reference to FIGS. 7 to 9B.

As shown in FIG. 7, the elevating portion 131 is connected to the upstream side of the pump portion 182 to open and close the flow path to the jack portion 185, and the third solenoid valve portion 184c of the solenoid valve portion 184 and the downstream of the jack portion 185. It further has a fourth solenoid valve portion 184d of the solenoid valve portion 184 that is connected to the side and opens and closes the flow path to the tank portion 183.

From the state of FIG. 9A where the drive wheels 141 and the steering wheels 142 of the self-propelled dental clinic chair 100 are landed, the self-propelled dental clinic chair 100 itself is raised to separate the drive wheels 141 and the steering wheels 142 from the floor surface F. In the case of the state shown in FIG. 9B, the third solenoid valve portion 194c is opened and the pump portion 82 is driven by the elevating motor portion 181.

As a result, the oil in the tank portion 183 is sent to the hydraulic cylinder 185b of the jack portion 185 at a predetermined pressure, the contact pad 185c lands on the floor surface F, and then further oil is sent, as shown in FIG. 9B. The drive wheels 141 and the steering wheels 142 are separated from the floor surface F, that is, the entire self-propelled dental clinic chair 100 is raised.

When the contact pad 185c of the jack portion 185 of the self-propelled dental clinic chair 100 is landed and the entire self-propelled dental clinic chair 100 is lowered from the state of FIG. 9B to land the traveling wheel 140 on the floor surface F, a pump is used. The fourth solenoid valve portion 184d is opened with the drive of the portion 182 stopped and the third solenoid valve portion 184c closed.

As a result, the hydraulic cylinder 185b is pushed downward by the weight of the entire self-propelled dental clinic chair 100 excluding the contact pad 185c, and the oil discharged from the jack portion 185 passes through the fourth solenoid valve portion 184d to the tank portion 183. Returning, the entire self-propelled dental clinic chair 100 descends, and the drive wheels 141 and the steering wheels 142 land on the floor surface F as shown in FIG. 9A.

<Tipping operation>
The control device 190 responds to the input of the backrest standing signal transmitted by the operation of the backrest standing instruction button 114c of the auxiliary operation unit 114 or the backrest tilt signal transmitted by the operation of the backrest tilting instruction button 114d. , The backrest 110 is tilted by controlling the tilting means (not shown).

<Electrical connection between self-propelled dental chair and Spitton>
The electrode socket portion 132b provided on the upper surface of the spitton connection portion 132a of the self-propelled dental clinic chair 100 is positioned so as to be directly below the electrode plug portion S10b provided on the lower surface of the connection arm portion S10a of the spiton S. When the jack portion 185 is driven as described above, the entire self-propelled dental clinic chair 100 rises and the electrode plug portion S10b and the electrode socket portion 132b engage with each other.

When the electrode plug portion S10b of the Spitton S and the electrode socket portion 132b of the self-propelled dental clinic chair 100 are connected, the electric power from the commercial power supply supplied to the Spitton S is also supplied to the self-propelled dental clinic chair 100. Therefore, the electric power of the commercial power supply supplied to the Spitton S can be supplied to the self-propelled dental clinic chair 100 to be a drive source for various devices and can charge the power supply battery 171.

100 ... Self-propelled dental clinic chair 110 ... Backrest 111 ... Backrest 112 ... Headrest 113 ... Armrest 114 ... Auxiliary operation 114a ... Seat lift instruction button 114b・ ・ Seat lowering instruction button 114c ・ ・ Backrest standing instruction button 114d ・ ・ Backrest tilting instruction button 115 ・ ・ ・ Back part 116 ・ ・ ・ Backrest tilting sensor part 120 ・ ・ ・ Contour seat 121 ・ ・ ・ Seat part 122 ・ ・ ・ Leg rest part 123 ・ ・ ・ Foot rest part 130 ・ ・ ・ Base frame 131 ・ ・ ・ Elevating part 132 ・ ・ ・ Base part 132a ・ ・ Spitton connection part 132b ・ ・ Electrode socket part 132c ・ ・ Bottom plate part 140・ ・ ・ Running wheel 141 ・ ・ ・ Drive wheel 141a ・ ・ ・ Drive shaft 142 ・ ・ ・ Steering wheel 150 ・ ・ ・ Operation handle (control device)
151 ... Handle body part 152R ... Advance / retreat throttle part (advance / retreat operation part)
152L ... Lifting throttle section (lifting operation section)
153 ... Grip part 154 ... Bush part 155 ... Handle tilting shaft part 156 ... Direction change shaft part 157 ... Direction change sensor part 158 ... Coil spring (pop-out prevention mechanism)
159 ... Handle tilt sensor unit 160 ... Handle accommodating recess 161 ... Handle accommodating recess Side wall portion 162 ... Vertical adjustment rail portion (mounting position adjustment mechanism)
163 ... Handle mounting plate (mounting position adjustment mechanism)
164 ... Damper part (shock absorption mechanism)
170 ... Drive device 171 ... Power supply battery 172 ... Travel drive motor 173 ... Transmission belt section 174 ... Direction change motor section (direction change section)
180 ... Lifting mechanism 181 ... Lifting motor part 182 ... Pump part 183 ... Tank part 183a ... Ram part 183b ... Pump case part 183c ... Containment area part 184 ... Solenoid valve part 184a ... 1st solenoid valve part 184b ... 2nd solenoid valve part 184c ... 3rd solenoid valve part 184d ... 4th solenoid valve part 185 ... Jack part 190 ... Control device S ... Spitton S10 ・ ・ ・ Spitton body part S10a ・ ・ Connection arm part S10b ・ ・ Electrode plug part S11 ・ ・ ・ Bowl part S12 ・ ・ ・ Water supply part F ・ ・ ・ Floor surface CO1 ・ ・ ・ Throttle part gap size CO2・ ・ ・ Gap size for grip

Claims (6)

A contour seat that supports the lower body of the patient, a backrest that is foldably provided on the contour seat to support the upper body of the patient, a base frame that is provided below the contour seat, and a lower portion of the base frame. A self-propelled dental clinic chair provided with a traveling wheel provided at a position and traveling on a floor surface in a dental clinic and a driving device provided on the base frame to drive the traveling wheel.
It is characterized by including a control device that drives and controls the drive device in a sitting posture in which the backrest is upright, and a control device that is provided on the back surface of the backrest and transmits a control signal to the control device. Self-propelled dental clinic chair. The self-propelled dental clinic chair according to claim 1, wherein the control device has an advancing / retreating operation unit for operating the advancing or retreating of the traveling wheel. The traveling wheel is composed of at least one steering wheel that can be steered to the left and right.
The self-propelled vehicle according to claim 1 or 2, wherein the drive device includes a direction changing portion that changes the traveling direction of the steering wheel to the left or right based on the left-right rotation of the control device. Ceremony dental clinic chair. The control device has an elevating operation unit for raising or lowering the contour seat.
The base frame includes a base portion, an elevating portion provided at an upper position of the base portion, and an elevating mechanism for elevating and lowering the elevating portion when the traveling wheel is stopped and the elevating operation portion is operated. The self-propelled dental treatment chair according to any one of claims 1 to 3, wherein the chair is provided. The base frame has a spitton connection that can be energized with the spiton.
The self-propelled dentistry according to claim 4, wherein the backrest has an auxiliary operation unit for raising or lowering the contour seat when the spitton and the spitton connecting portion are energized. Medical chair. The self-propelled dental clinic chair according to any one of claims 1 to 5, wherein the backrest includes a mounting position adjusting mechanism for adjusting the mounting position of the control device up and down. ..

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