JPH0368700B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatically set and resettable surgical light arm.

Conventionally, in treatment units used for dental treatment, the dental treatment chair has a structure that uses hydraulic cylinders etc. to raise, lower, raise and recline the backrest with a single switch operation, but the surgical light does not require a switch operation. Since there is no mechanism to operate the dental treatment chair, the operator (dentist) places the patient in the dental treatment chair, then turns on the set switch to raise the chair and recline the backrest.
Next, get up from the stool, turn on the surgical light, pull it up to 60 to 70 cm from the patient's face, sit back down on the stool, make fine adjustments to the position of the surgical light, and begin treatment. Furthermore, at the end of treatment, it was necessary to first turn off the surgical light, stand up and move away from the surgical light, and then turn on the reset switch to raise the backrest and lower the chair. Therefore, even though the dental treatment chair can be moved with a single switch, the operator has to get up from the stool each time the surgical light is brought closer to the patient or moved away from the patient, which complicates the operator's flow line and If the patient forgot to move the operating light far away and turned on the reset switch, there was a risk that the patient would collide with the operating light.

As a result of various studies, the present inventors have found that by incorporating an air cylinder into the arm of a surgical light, the surgical light can be automatically operated in conjunction with the setting and resetting of the chair at the start and end of dental treatment. They completed the present invention by discovering that it is possible to manufacture a surgical light arm that can be set and reset, and also manually move the surgical light to a desired position in the same way as in the past.

That is, the present invention is an arm that supports a surgical light attached to a dental treatment unit, and includes an arm connecting member that is pivotally connected to the tip of a rotary arm that is rotatable in the horizontal direction, and an arm connecting member that is horizontally rotatable. an arm body whose one end is pivotally connected to the arm connecting member so as to be rotatable in the direction; and a lamp pivotally connected to the end of the arm body on the side opposite to the arm connecting member so as to be freely rotatable in the vertical direction. It consists of a connecting member, and a lamp body support member which is pivotally attached to the lamp connecting member so as to be freely rotatable in the horizontal direction, and which supports the lamp body rotatably in the vertical direction at the end opposite to the pivoting part. The arm body includes a connecting member whose one end is pivotally connected to the arm connecting member so as to be vertically rotatable, and a connecting member which is fixed to the arm body and comes into contact with the connecting member. The brake piece is wound around the connecting member between a brake piece that suppresses movement, a stopper fixed to the connecting member, and the brake piece, and is further compressed when the arm body is rotated downward. An arm of a surgical light characterized in that a compression coil spring and an air cylinder having a cylinder fixed to the arm body and whose piston rod is moved by the connecting member in the tension direction and compression direction of the compression coil spring are installed inside. It provides:

EMBODIMENT OF THE INVENTION Hereinafter, the arm of the surgical light according to the present invention will be further explained based on the embodiment shown in the drawings.

FIG. 1 is a perspective view showing the appearance of one embodiment of a surgical light using the surgical light arm according to the present invention, and FIGS. 2A and B are one example of the surgical light arm used in the surgical light shown in FIG. 1. The plan view, front sectional view, and FIGS. 2C and D showing the reset state of the embodiment show the operating light arm used in the operating light shown in FIG. 1 in the middle of setting and in the middle of resetting, respectively. Figure 2E is an enlarged cross-sectional view taken along line a-a in Figure 2B, Figures 3A and B are the second
FIG. 3 is a sectional view of another embodiment corresponding to FIGS. B and E;
FIG. 4 is a diagram showing a solenoid valve used to operate the arm of a surgical light, and FIG. 5 is an electrical circuit diagram of an embodiment in which the solenoid valve shown in FIG. 4 is incorporated into the operating circuit of a dental treatment chair.

In the drawing, reference numeral 1 denotes a horizontally rotatable rotary arm attached to the dental treatment unit, and in the illustrated embodiment, it is horizontally attached to a pole 1a protruding from the dental treatment unit (not shown). It is installed. In this structure, the rotary arm 1 is rotatably attached to the pole 1a, and the rotary arm 1 is fixed to the pole 1a and the pole 1a is rotatably attached to the dental treatment unit. There is. Reference numeral 2 denotes an arm connecting member which is pivotally attached to the tip of the rotary arm 1 so as to be horizontally rotatable; 3 is a rectangular tubular arm body whose one end is pivotally attached to the arm connecting member 2 so as to be freely rotatable in the vertical direction; Reference numeral 4 denotes a lamp connection member which is pivotally connected to the end of the arm body 3 on the side opposite to the arm connection member 2 side so as to be freely rotatable in the vertical direction; and 5 is a lamp connection member which is pivotally connected to the lamp connection member 4 so as to be freely rotatable in the horizontal direction. A lamp body 6 is supported rotatably in the vertical direction at the end of the lamp body support member 5 opposite to the pivoting part with the lamp connection member 4. This is a handle attached to the lamp body 6. Reference numeral 7 denotes a connecting member whose one end is pivotally connected to the arm connecting member 2 in the arm body 3 so as to be rotatable in the vertical direction; in the illustrated embodiment, the connecting member 7 is not pivotally connected to the arm connecting member 2. The end portion is pivotally connected to the lamp connecting member 4 so as to be freely rotatable in the vertical direction. 8 is the arm body 3
A brake piece 9 is fixed in the interior and comes into contact with the connecting member 7 to suppress the movement of the connecting member 7. Reference numeral 9 is a stopper fixed to the connecting member 7.
As shown in FIG. If the position where the connecting member 7 is pivotally attached to the arm connecting member 2 is above the position where the arm body 3 is pivotally attached to the arm connecting member 2 as shown in FIG. The piece 8 needs to be closer to the arm connecting member 2 than the stopper 9. 10 is a compression coil spring that is wound around the connecting member 7 between the brake piece 8 and the stopper 9 and is further compressed when the arm body 3 is rotated downward;
11 and 12 are cylinders 11a and 1 in the arm body 3.
2a is fixed, and piston rods 11b and 12b are tension air cylinders and compression air cylinders that move the connecting member 7 in the tension direction and compression direction of the compression coil spring 10, and these air cylinders 11 and 12 are independent as shown in the figure. You can replace the two single-acting types with one double-acting type without using them in the opposite direction, but in either case, the air cylinder will automatically return to its initial position by the spring built into the cylinder. In the case of the type that returns to normal, a certain distance is required between the tip of the piston rod and the abutting portion of the piston rod of the connecting member 7 when compressed air is not supplied to the cylinder. The reason why the cylinder installed inside the arm body 3 is an air cylinder is because there is no risk of contamination due to oil leakage from the oil cylinder, and because there is compressed air used for other equipment in dental clinics, the compressed air is used as an air cylinder. This is due to the fact that air can be used easily and the movement is smooth.

Next, the operation of the arm of the surgical light according to the present invention having the above structure will be explained.

First, to explain the case of manually moving the surgical light, if you grasp the handle 6a attached to the lamp body 6 and apply force, it will move to the arm body 3 via the lamp connection member 4 attached to the lamp body 6. If a force is applied to the connecting member 7 and the force is greater than the braking force exerted by the brake piece 8 on the connecting member 7, the connecting member 7 becomes movable relative to the arm body 3, and the arm body 3 is moved in the vertical direction relative to the arm connecting member 2. When the lamp body 6 is released, the weight of the lamp body 6 etc. is supported by the compression force of the compression coil spring 10 and the braking force of the brake piece 8, so that the lamp body remains balanced. At this time, the air cylinders 11a, 12a
If a type of piston rod 11b, 12b is returned to the initial position by a built-in spring, the piston rod 11
The tips of b and 12b can move the arm body 3 vertically relative to the arm connecting member 2 without coming into contact with the contact portions of the piston rods 11b and 12b of the connecting member 7, and the air cylinders 11, If a type of piston rod 12 that does not automatically return to the initial position is used, even if the tips of the piston rods 11b and 12b are connected to the connecting member 7, the air flow that is communicated to the air cylinders 11 and 12 will be reduced. If the road is open to the atmosphere, the arm body 3
can be moved without being affected by the air cylinders 11 and 12.

In addition, to set or reset the surgical light using compressed air, the compressed air supplied from the compressed air source (not shown) attached to the dental treatment unit can be supplied or stopped using an electric switch as shown in Fig. 4. If this is done by operating the valve, the tension air cylinder 11 or the compression air cylinder 12 will operate as shown in FIG. The arm body 3 rotates downward about the arm connecting member 2 to enter the set state, or rotates upward to enter the reset state. The rotation range of the arm body 3 is limited by setting a limit switch at a predetermined position, and when the arm body 3 rotates beyond a certain level, the switch is turned off and the air cylinder 11,
The movement may be stopped by opening the flow paths of the twelve cylinders 11b and 12b to the atmosphere.
In this way, it is possible to automatically bring the surgical light closer to you or move it further away with a single switch operation, and as shown in Figure 5, the surgical light can be connected to the electric circuit for operating the dental treatment chair. By incorporating a solenoid valve for operating the arm, the surgical light can be set and reset together with the dental treatment chair with a single set/reset switch operation, and patient safety can also be ensured.

In Fig. 5, the area surrounded by broken lines indicates that the arm movement is faster than the chair movement, which could pose a danger to the patient. This is a circuit that is installed to operate the arm for a certain period of time after the end of the movement, where 〓 is the push button switch, □R is the operating coil of the relay, 〓 is the contact of the relay, and 〓 is the micro switch that regulates the range of movement of the chair. , (〓, 〓 indicates normally open, 〓, 〓 indicates normally closed.)
SV _{1 to 4} are solenoid valves that control the supply and discharge of oil to the oil cylinder that moves the chair, SV _{5 and 6} are solenoid valves that control the supply and discharge of air to the air cylinder that moves the operating light arm, and SV ₅ is for compressed air supply to tension cylinder 11, SV ₆ is for compression cylinder 1
This is for supplying compressed air to 2. indicates a hydraulic pump, and up, down, up, and down indicate raising and lowering of the dental treatment chair, and raising and lowering the backrest, respectively.

As explained above, although the surgical light arm according to the present invention has a simple structure, it simplifies the operator's flow line, reduces operator fatigue, and ensures patient safety. , which has great value in dental treatment.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the appearance of one embodiment of a surgical light using an arm of a surgical light according to the present invention, and FIGS. 2A and 2B each show an example of an arm of a surgical light used in the surgical light shown in FIG. The plan view, front cross-sectional view, and FIGS. 2C and D showing the reset state of the embodiment show the operating light arm used in the operating light shown in FIG. 1 in the middle of setting and in the middle of resetting, respectively. Figure 2E is an enlarged cross-sectional view taken along line a-a in Figure 2A, Figures 3A and B are the second
FIG. 3 is a sectional view of another embodiment corresponding to FIGS. B and E;
FIG. 4 is an electrical circuit diagram of an embodiment in which the solenoid valve shown in FIG. 4 is incorporated into the operating circuit of a dental treatment chair. DESCRIPTION OF SYMBOLS 1...Rotating arm, 1a...Pole, 2...Arm connection member, 3...Arm body, 4...Lamp connection member, 5...Lamp body support member, 6...Lamp body, 6a...Handle, 7... Connecting member, 8...
... Brake piece, 9 ... Stopper, 10 ... Compression coil spring, 11 ... Tension air cylinder, 12 ... Compression air cylinder, 11a, 12a
...Cylinder, 11b, 12b...Piston rod.

Claims (1)

[Scope of Claims] 1. An arm that supports a surgical light attached to a dental treatment unit, and an arm connecting member that is pivotally connected to the tip of a rotary arm that can freely rotate in a horizontal direction. , an arm body whose one end is pivotally connected to the arm connecting member so as to be freely rotatable in the vertical direction; a lamp body support member which is pivotally connected to the lamp connection member so as to be rotatable in the horizontal direction and which supports the lamp body rotatably in the vertical direction at an end opposite to the pivot joint; It consists of
Inside the arm body, there is a connecting member whose one end is pivotally connected to the arm connecting member so as to be rotatable in the vertical direction, and a connecting member which is fixed to the arm body and comes into contact with the connecting member to move the connecting member. Compression is further compressed when the arm body is rotated downward, and is wrapped around the connecting member between the brake piece and the brake piece, which is fixed to the connecting member. An arm for a surgical light, characterized in that a coil spring and an air cylinder whose cylinder is fixed to the arm body and whose piston rod moves the connecting member in the tension direction and compression direction of the compression coil spring are installed inside. 2. According to claim 1, the position at which the connecting member is pivotally connected to the arm connecting member is lower than the position at which the arm body is pivotally connected to the arm connecting member, and the stopper is closer to the arm connecting member than the brake piece. The arm of the surgical light mentioned. 3. According to claim 1, the position where the connecting member is pivotally attached to the arm connecting member is above the position where the arm body is pivotally attached to the arm connecting member, and the brake piece is closer to the arm connecting member than the stopper. The arm of the surgical light mentioned. 4. The air cylinder whose piston rod moves the connecting member in the tension direction and compression direction of the compression coil spring is a type of air cylinder in which the piston rod is automatically returned to its initial position by a spring built into the cylinder. A surgical light arm according to scope 2 or 3. 5. An air cylinder in which the piston rod moves the connecting member in the tension direction and compression direction of the compression coil spring. Claim 2 or 3, wherein the air cylinder is of a type that does not automatically return to its initial position. The surgical light arm described in . 6. The air cylinders in which the piston rod moves the connecting member in the tension direction and the compression direction of the compression coil spring are two single-acting air cylinders that move the connection member in the tension direction and compression direction of the compression coil spring, respectively. An arm for a surgical light according to any one of claims 1 to 5. 7. The air cylinder in which the piston rod moves the connecting member in the tension direction and the compression direction of the compression coil spring is a double-acting air cylinder that moves the connection member in the tension direction and compression direction of the compression coil spring, respectively. An arm for a surgical light according to any one of claims 1 to 5.