JPH0236860A - Dental unit - Google Patents

Abstract

PURPOSE:To enable the easy and proper ascending/descending of an illuminating lamp with an easy mechanism by raising and lowering an illuminating lamp supporting stay according to the corrugation of the back plate of a dental chair by means of the ascending/descending mechanism provided on the base part of the stay CONSTITUTION:An illuminating lamp supporting arm 6 and an illuminating lamp 5 mounted to the top end thereof are laid in an ascending position until a patient sits on a dental treatment chair disposed on a base 1, by means of an ascending/ descending mechanism 8 provided on the illuminating lamp supporting stay base part reacted by receiving a signal from an angle position detecting sensor of a back plate 2 provided in the dental treatment chair. When the patient sits down, the back plate 2 is slanted at an angle position suitable to the treatment and a step 3 is also raised and stretched, and further, the illuminating lamp supporting stay 7 is lowered and stopped at an illuminating lamp lighting height position suitable to the treatment. When the patient raises up the chair back plate 2 during the treatment, the illuminating supporting stay 7 is raised, and then when the patient uses a spittoon 4 and again brings down the back plate 2, the supporting arm 6 and the illuminating lamp are returned to the position suitable to the treatment so that they are not made in contact with the head of the patient.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dental unit, and more particularly to a dental unit in which a lamp support column moves up and down in conjunction with the ups and downs of a chair.

(Prior art and problems to be solved by the invention) Conventionally,
During dental treatment, when a patient approaches the chair in which the patient is seated, or when the patient stands up from the back of the chair to gargle during treatment, the illumination light or its support arm may There was a risk of injury due to contact with the head, face, etc., and damage to the lighting lamp.

In order to avoid these dangers, we have developed a system in which: (1) a lighting lamp attached to a lighting support column at a fixed angle approaches and separates from the chair in conjunction with the ups and downs of the dental treatment chair (for example, Japanese Patent Laid-Open No. 58-2
21.943 Publication), or ■ A method of changing the vertical position of the illumination light by adjusting the pivot angle of the illumination light support arm pivotally attached to the upper end of the illumination light support in conjunction with the ups and downs of the dental treatment chair (for example, , see Japanese Patent Application Laid-Open No. 60-156462)
etc. were adopted.

However, the conventional technology has a problem in that the mechanism for adjusting the movement of the illumination lamp arm is complicated and adjustment thereof is also difficult.

(Means for Solving the Problems) The present invention has been made to solve the above problems, and
That is, in a dental unit consisting of a dental treatment chair, a spittoon, a lighting lamp, etc., it is raised and lowered according to the ups and downs of the back plate of the dental chair using a lifting mechanism that has a lighting lamp support column at its base. This is a dental unit characterized by:

In the present invention, it is a preferable aspect that the illumination light support column is a hollow tube body, and that the base thereof is provided with an elevating mechanism including a fluid cylinder. It is also a preferred embodiment that the base hollow tube body is comprised of a base hollow tube body and a fluid cylinder juxtaposed and connected to the base hollow tube body, and that the base hollow tube body is connected to the piston rod end of the fluid cylinder by a horizontal connecting rod. .

In addition, the fluid cylinder is a double-acting hydraulic cylinder,
Furthermore, the illumination light support column is provided with electric wires for power supply for lighting the illumination light and control wiring inserted from the entire tube opening in the base to the illumination light, and furthermore, the support frame of the lifting mechanism In addition, it is preferable to provide various switches and various on-off valves for controlling the dental treatment chair and fluid cylinder, which are turned on and off according to the vertical movement of the hollow tube at the base of the illumination lamp support column.

(Example) Next, embodiments of the present invention will be described based on the drawings.

Fig. 1 is a side view of a dental unit according to an embodiment of the present invention;
The figure is a sectional view of the internal structure of the lifting mechanism of the same dental unit.
FIG. 3 shows a cross-sectional plan view taken along the line AA in FIG.

In Fig. 1, 1 is the base of the dental unit, 2 is the back plate of the dental treatment chair, 3 is the step of the dental treatment chair, 4 is the subton, 5 is the lighting lamp, 6 is the lighting support arm, and 7 is the lighting. The light support column 8 is a lifting mechanism section.

In Figures 2 and 3, 10 is a support frame;
1.11' is a bearing, 12 is a fluid cylinder, 13 is a piston rod, ]4.14' is a fluid inlet/outlet, 15 is a horizontal connecting rod, 16 is a base hollow tube body, 17 is an ascending limit 1 to switch, 18 is a lowering limit switch, one is a guide groove, 20
is the actuating piece.

In FIG. 1, the lamp support column 7 is raised until the patient first approaches the dental treatment chair installed on the base 1 and takes a seat. The illuminated lamp 5 is also in the raised position.

Next, when the patient is seated, the back plate 2 falls to a predetermined angular position suitable for treatment, and at the same time, the step 3 also rises and extends, and the illumination lamp support column 7 follows this and descends, providing illumination suitable for treatment. Stops at the altitude position where the light is lit.

During treatment, when the patient stands up on the chair back plate 2 to gargle, etc., the illumination light support column 7 also rises, and after gargling using the spittoon 4, the back plate 2 is lowered back to the treatment position. Then, the illumination lamp support column 7 also descends. Therefore, the support arm 6 and the illuminating lamp 5 are prevented from coming into contact with the patient's head, etc., and the illuminating lamp can be returned to a position suitable for treatment.

The above-mentioned operation is performed by the elevating mechanism 8 provided at the base of the illumination lamp support column, which responds to signals from sensors for detecting the angular position of the back plate 2 provided in the dental treatment chair.

The elevating mechanism 8 is provided within the support frame 10, and includes a fluid cylinder 12, a base hollow tube body 16 arranged in parallel with the fluid cylinder 12, and a horizontal connecting rod 15 that connects the two arranged in parallel.
and a bearing 11 for maintaining vertical sliding of the base hollow rod.
, 11°, etc.

A fluid on-off valve (not shown) is opened and closed by a signal from an angular position detection sensor provided on the chair, and the fluid cylinder 1
The lighting lamp support column 7 is raised and lowered by controlling the flow of fluid into and out of the lamp support column 2.

That is, when a fluid (for example, compressed air) is pressurized into the fluid inlet/outlet 14' in response to a signal from a sensor,
Since the piston rod 13 of the composite fluid cylinder 12 is pushed upward, the base hollow tube body 16 connected to it by the connecting rod 15 is also lifted upward at the same time, and therefore the illumination lamp support column 7 is lifted. The lighting lamp 5 will be raised.

As shown in FIG. 3, the elevating mechanism is housed within a support frame 10 that is approximately elliptical in plan view, and the base hollow tube body 1
The operating piece 2 consists of a chamfered ring body on the outer periphery of the lower end of 6.
0 is tightened.

Now, when the fluid cylinder 12 of the elevating mechanism is pushed upward in response to a signal from the sensor of the dental treatment chair and the base hollow tube body 16 rises to near the bearing 11', the actuating piece 20
comes into contact with the rising limit switch 17 and the fluid cylinder 1
The opening/closing valve for supplying the pumping fluid No. 2 is closed, and the lifting of the base hollow tube body 16 is stopped.

In addition, in response to a signal from the sensor of the dental treatment chair, the fluid cylinder 12 of the lifting mechanism is pressed downward and the actuating piece 2
0 comes into contact with the lowering limit switch 18, the on-off valve for supplying the lowering fluid to the fluid cylinder 12 is closed, and the lowering of the base hollow tube body 16 is stopped at a position suitable for treatment.

As shown in FIG. 3, in order to prevent the base hollow tube body 16 from rotating in the horizontal direction l\, a vertically elongated guide groove 19 is provided at the end of the support frame 10, and the tube body 16 is protruded into this groove. The provided slide piece 21 is inserted. In this example, a roller 23 is pivotally attached to the end of the slide piece 21.
The contact and sliding with the guide groove 19 wall is made smooth.

In the dental unit described above, the illumination lamp support column 7 moves up and down during non-treatment and treatment, thereby preventing the illumination lamp 5 from coming into contact with the patient's head, face, etc. The elevating mechanism of the present invention is mechanically simpler than the conventional elevating method for illuminating lights, and therefore does not cause any trouble, and can easily and accurately adjust the elevating and lowering of illuminating lights.

In the lifting mechanism of the present invention, the fluid cylinder 12 and the base hollow tube body 16 connected to the illumination lamp support column 7 are arranged side by side at the base and connected by the horizontal connecting rod 15, so that the required space is reduced. It has a shortened and compact structure.

On the other hand, if the fluid cylinder and the illumination lamp support column are extended in series and on the same line, the structure becomes unstable because the height increases by the length of the fluid cylinder. Further, it is not possible to use a hollow tube for the slanted illumination lamp support column that is connected to the screws 1 to 1, and therefore it is not possible to insert the power supply wire for lighting the illumination lamp into the column.

In the above embodiment, an example was described in which air pressure is used as the fluid cylinder, but hydraulic pressure can also be used. In that case, the pressure of the fluid is directly and accurately transmitted, so the movement of the lighting lamp support column is affected. There is no play or wobbling, which is preferable.

Furthermore, a motor drive system may be adopted instead of driving by a fluid cylinder.

(Effects of the Invention) Since the dental unit of the present invention has a structure in which the illumination light support column is raised and lowered up and down, it is mechanically simpler than the conventional method of raising and lowering the illumination light by adjusting the angle, etc., resulting in failure. There is no problem, and the lighting lamp can be adjusted up and down easily and accurately.

Furthermore, in the device of the present invention which employs an elevating mechanism in which the illumination light support column and the base hollow tube body are arranged side by side, the base hollow tube body connected to the fluid cylinder and the illumination light support column is parallel to each other at the base. Because they are installed and connected by horizontal connecting rods, the required space is shortened and the structure is compact, providing a sense of stability and an excellent appearance.

H, 18: Lowering limit switch, 19/Guide groove 20:
Actuation piece, 21 varnished piece, 22. Power supply wire for lighting lighting, 23-roller

Claims (7)

[Claims] (1) A dental unit consisting of a dental treatment chair, a spittoon, a lighting lamp, etc., is raised and lowered according to the ups and downs of the back plate of the dental treatment chair using a lifting mechanism with a lighting support column provided at its base. A dental unit characterized by: (2) The dental unit according to claim 1, wherein the illumination lamp support column is a hollow tube body, and the base thereof is provided with an elevating mechanism including a fluid cylinder. (3) The elevating mechanism consists of a base hollow tube of the illumination light support column and a fluid cylinder arranged in parallel with and connected to it, and the base hollow tube is connected to the piston rod end of the fluid cylinder and the horizontal connecting rod. 3. The dental unit according to claim 2, wherein the dental unit is connected by a. (4) The dental unit according to claim 3, wherein the fluid cylinder is a double-acting pneumatic or hydraulic cylinder. (5) Claim 3, characterized in that the illumination light support column has power supply wires for lighting the illumination light and control wiring inserted from the opening of the hollow tube at its base to the illumination light.
Or the dental unit according to 4. (6) The support frame of the lifting mechanism is provided with a limit switch for fluid cylinder control that is turned on and off in accordance with the vertical movement of the hollow tube at the base of the illumination light support column. 5. The dental unit according to any one of 5. (7) A mechanism for preventing the base hollow tube from rotating is provided by fitting a slide piece protruding from the base hollow tube of the illumination light support column into a vertical groove provided in the support frame. The dental unit according to any one of claims 3 to 6.