JPH0314174Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The present invention moves a table on which a medical instrument such as a dental air turbine is placed to a location near the patient's oral cavity, and performs medical treatment using the instrument. This invention relates to a scissor arm for a dental treatment instrument mounting table, in which two pairs of arm rods can be bent from their joints in order to movably support the mounting table.

[Technical background of the invention and its problems]

2. Description of the Related Art An arm device in which two arm rods are pivotally supported by a pair of parallel and equidistant fulcrums so that the fulcrums are always parallel even when the two arm rods are rotated has been known.

However, with this arm device, when a load is applied to the fulcrum on the moving side, the arm rod collapses because there is no resistance against this, and if the fulcrum is provided with an anti-rotation force that can withstand the load. However, there were drawbacks such as the rotation of the arm rod becoming difficult and smooth movement being impossible, and it could not be used as is as an arm device for a mounting table on which dental treatment instruments are placed.

[Purpose of invention]

In order to eliminate the above-mentioned drawbacks of the conventional arm device, the present invention provides two arm rods that move in parallel with a spring biasing force that becomes stronger as the angle of inclination of the arm rods with respect to the vertical increases. Even if a load is applied to the moving side of the arm lever, the arm lever maintains its inclination, and the moving side of the arm lever is held in that position.

The base end of the arm rod is horizontally rotatably supported so that the moving part can be moved not only back and forth, but also left and right, thereby expanding the movable range of the mounting table.

Furthermore, a locking mechanism is provided at the fulcrum of the arm rod to prevent the arm rod from collapsing and the mounting table from falling even if an unintentional overload is applied to the mounting table. .

[Example of idea]

A dental treatment system equipped with a dental treatment instrument device employing a scissor arm for a dental treatment instrument mounting table according to the present invention will be described below with reference to the drawings.

In Figs. 1 to 4, A is a rectangular casing, and the base end of an L-shaped arm 1 is rotatably attached to one side in the longitudinal direction of the upper surface of the casing, and the other end is freely attached. A free arm 3 is provided so that the dental light 2 at the tip can be moved to an arbitrary position and directed in a desired direction using a bendable joint.

Further, an arm member 4a is rotatably attached to the base end of the arm 1, and a scissor arm 4 is rotatably attached to the tip of the arm member 4a, and the scissor arm 4 can be opened to change the V-shaped angle. By doing so, the X-ray 5 attached to the tip of the scissor arm 4 can be moved to any desired position, and the joint provided between it and the scissor arm 4 can be used to direct it in the desired direction. There is.

A base end of a scissor arm 9 having a locking mechanism 8 is attached to the end face in the longitudinal direction of the housing A via a rotation mechanism 6 that rotates freely, and a doctor table 10 is attached to the tip of the scissor arm 9. There is.

This scissor arm 9 can be bent freely into a V-shape, an L-shape, etc., and even if the scissor arm 9 changes its bending state, the doctor table 1
0 always maintains a horizontal state, and the air tube, vacuum tube, water tube, etc. are passed through the scissor arm 9, and the doctor table 1
High-pressure air, vacuum, water, etc. are supplied to tools such as air turbines and treatment equipment placed on the 0.

A control panel 12 for controlling the film viewer 11 and the X-ray 5, which has a built-in fluorescent light and has a frosted glass on its surface, is installed on one longitudinal side of the housing A.

The X-ray 5 can be controlled not only by the control panel 12 but also by operating an operating device in the control panel 12 using a remote control device (not shown).

On the other side in the longitudinal direction of the housing A, a spittoon 14 having a faucet 13 can be pulled out by folding down the collapsible arm 15.
Patients are now able to gargle with water supplied by the hospital.

In addition, as shown in FIGS. 10 to 13, the housing B
is also formed into a rectangular plane, with the housing A on one side.
Similarly, a film viewer 11 and a control panel 12 are formed, and a doctor table 10 is attached to the tip below, and the base end of a scissor arm 9 having a locking mechanism 8 in the middle is attached via a rotation mechanism 6. It is being

Furthermore, as shown in FIGS. 10 to 13, the casing C is also formed into a rectangular plane, and the casing A is formed on the top surface of the casing C.
Similarly, the X-ray 5 is rotatably attached to one side in the longitudinal direction with a scissor arm 4, and the base end of an L-shaped arm 1 is rotatably attached to the other side. A dental light 2 is provided via a free arm 3.

A spittoon 14 having a faucet 13 is provided on one side of the housing C so that it can be pulled out by a collapsible arm 15.

Now, the case where several types of medical treatment spaces are created using the three types of casings A, B, and C mentioned above will be explained with reference to FIGS. 5 to 7.

In the case of Figure 5, three medical treatment spaces are created in a long and narrow room.
and a second medical treatment space, a housing A is installed between the second and third medical treatment spaces, and a housing B is installed on the right wall of the third medical treatment space.

Therefore, in the first medical treatment space, from the housing C to the spittoon 14, the dental light 2, and the X-
Ray 5 from the housing A to the doctor table 10, film viewer 11, and control panel 12.
This allows the use of X-Ray 5 in case C.

In the second treatment space, case A on the left
From the cabinet A on the right side, remove the spittoon 14, dental light 2, and X-ray 5 from the doctor table 1.
0. The film viewer 11 and control panel 12 allow the use of the X-ray 5 in the housing A on the left.

Similarly, in the third treatment space, the spittoon 14 and the dental light 2,
The X-ray 5 in the left case A can be used from the right case B through the doctor table 10, film viewer 11, and control panel 12.

In addition, when increasing or decreasing the number of medical treatment spaces, this is done by increasing the number of casings A between casings B and C compared to the above case.

The medical treatment space shown in Figure 5 above is installed in a straight line, but as shown in Figures 6 and 7, the direction of the housing A can be changed by 45 degrees or 90 degrees. Therefore, it is also possible to arrange them in an L-shape.

In the above embodiment, 16 is a patient chair;
Reference numeral 18 in FIGS. 13 and 13 is a pedestal on which an oral cleaning device is placed, and is attached to the housing C with a scissor arm 17.

Scissor arm 9 that keeps the doctor table 10 horizontal at all times, its rotation mechanism 6, and lock mechanism 8
is constructed as shown in FIGS. 8 and 9.

Support body 6a attached and fixed to casings A and B
A shaft 6b protruding from the base body 9a of the scissor arm 9 is rotatably supported, and the scissor arm 9 can be rotated in any direction by its rotation.

In addition, the doctor table 10 also has scissor arms 9.
The scissor arm 9 is fitted into a shaft 9d protruding from a receiver 9c, and can be oriented in any direction with respect to the scissor arm 9.

The base body 9a, the intermediate body 9e, and the intermediate body 9e
and the receiver 9c are frame rods 9g ₁ , 9g ₂ and 9h ₁ , which are parallel and pivoted at equidistant fulcrums 9f, respectively.
_9h2 , and the doctor table 10 is moved in relation to the fulcrum 9f, and even if the angles of the frame rods _9g1 , _9g2 and _9h1 , _9h2 change, the doctor table 1
0 maintains horizontal.

Then, the connecting rod 9 is connected to the pin 9i provided on the intermediate body 9e.
The rod 9k connected by the rod 9k is inserted through a screw 9l that can be adjusted with respect to the frame rod _9g1 , and a spring 9m is installed between the screw 9l and the receiving piece _9k1 of the rod 9k.

When the frame rods 9g ₁ and 9g ₂ are tilted from the horizontal position, the rod 9
k comes to be pushed into the screw 9l, so the spring 9m is compressed, and its pressing force is transmitted to the pin 9i, and by this force the frame rods 9g ₁ and 9g ₂ maintain their inclination angles. .

Similarly, a rod 9q is connected by a continuous rod 9p to a support piece 9n attached to a fulcrum 9f of the receiver 9c.
is inserted into a screw 9r that can be adjusted with respect to the frame rod _9h1 , and a spring 9s is installed between the screw 9r and the receiving piece _9q1 of the rod 9q.

Therefore, when the frame rods 9h ₁ and 9h ₂ are tilted from the vertical position, the rod 9q is moved from the screw body 9 in the same manner as described above.
r, the spring 9s is compressed and its force is transmitted to the support piece 9n, thereby maintaining the inclination angle of the frame rods 9h ₁ and 9h ₂ .

Adjust the screws 9l and 9r with respect to the frames 9g ₁ and 9h ₁ and adjust the compression force of the springs 9m and 9s to tighten the frame rod 9.
This is to adjust the inclination holding force of g ₁ , 9g ₂ and 9h ₁ , 9h ₂ .

A fulcrum 9f connecting the intermediate body 9e and frame rods 9g ₁ and 9h ₁ is supported by a fulcrum 8a, and a spring 8 is attached to the fulcrum 9f.
The arcuate recesses 8e of the lock pieces 8c and 8d, which are pushed open by the lock pieces 8c and 8d, are fitted.

On the other side of the lock pieces 8c and 8d, there is a cylinder 8f.
The opposing pistons 8g inserted therein are in contact with each other, and the cylinder 8f is provided with an air connection port 8h.

This air connection port 8h is normally supplied with compressed air, and the pressure pushes the piston 8g open against the spring 8b, thereby locking the pieces 8c and 8d.
The arcuate recess 8e tightens the fulcrum 9f, thereby preventing rotation of the fulcrum 9f and ensuring the angle of inclination of the frame rods 9g ₁ , 9g ₂ and 9h ₁ , 9h ₂ with respect to the intermediate body 9e.

Then, only when changing the inclination angle of the frame rods 9g ₁ , 9g ₂ and 9h ₁ , 9h ₂ , the compressed air is interrupted and the spring 8
The force b opens the arcuate recess 8e to release its brake, and the force of the springs 9m and 9s balances the angle of inclination of the frame rods 9g ₁ , 9g ₂ and 9h ₁ , 9h ₂ with a light force. and move the doctor table 10 to an arbitrary position.

When this movement is completed, compressed air is again introduced into the cylinder 8f to establish a locked state.

[Effect of idea]

As mentioned above, in this invention, the base end is rotatably supported, so by rotating this, the arm rod can be oriented in any direction, and the arm rod can be expanded and contracted by tilting. Therefore, the mounting table can be placed not only at the front and rear, but also at the
It can be moved in a wide range such as left and right, and the mounting table can be moved to the vicinity of the patient's oral cavity or any other arbitrary location.

Each pair of arm levers has a spring attached to the rod that slides according to the inclination angle of the arm lever, so this spring prevents the arm levers from falling horizontally. This resistance increases as the angle of the arm bar increases, so regardless of the inclination angle of the arm bar, the weight of the medical instrument placed on the table will cause the inclination angle to change. The mounting table will not fall.

Since this spring force does not act as a resistance force against rotation of the arm rod relative to the fulcrum, the mounting table can be moved lightly and smoothly.

Furthermore, since this spring force is applied to each of the two pairs of arm rods, it is possible to change the height of the mounting table by, for example, placing one pair of arm rods horizontally and the other vertically. be.

Furthermore, the fulcrum is equipped with a locking mechanism that prevents the arm rod from rotating with respect to the fulcrum, so even if an unintentional overload is applied, such as by touching the mounting table, the arm rod will not rotate. This has many effects, such as preventing the mounting table from rapidly descending due to this overload.

[Brief explanation of the drawing]

Figures 1 to 4 show a medical instrument device using the scissor arm of the present invention, with Figure 1 being a front view and Figure 2 being a front view.
Fig. 3 is an opposite side view, Fig. 4 is a plan view, Figs. The figure is a sectional view of one embodiment of the present invention, FIG. 9 is a sectional view of its locking mechanism, FIG. 10 is a front view of the end case for the medical treatment space, and FIGS. 11 and 12 are side views of the opposite side. FIG. 13 is a plan view thereof. 6... Rotation mechanism, 6a... Support body, 6b... Axis,
8...Lock mechanism, 8b...Spring, 8c, 8d...
... Lock piece, 9 ... Scissor arm, 9a ... Base, 9c ... Receptor, 9e ... Intermediate, 9f ... Fulcrum, 9g ₁ , 9g ₂ , 9h ₁ , 9h ₂ ... Frame rod, 9j, 9
p...rendou, 9k, 9q...rod, 9m, 9s
……Spring.

Claims (1)

[Claims for Utility Model Registration] A base end rotatably supported in the horizontal direction, and fulcrums are parallel and equally spaced between the base end and the intermediate body so that the pair always remains parallel. The first provided
a pair of parallel arm rods, a second parallel arm rod whose fulcrums are parallel and equally spaced between the intermediate body and the mounting table support so as to keep the pair always parallel; a first rod pivotally supported by the intermediate body, the other being slidably supported by one of the first parallel arm rods; a second rod pivotally supported through the second parallel arm rod, the other end of which is slidably supported by one of the second parallel arm rods; a first spring member that is locked to the sliding portion of the parallel arm rod; one end of the spring member is locked to the second rod, and the other end is locked to the sliding portion of the second parallel arm rod; a second spring member, and when rotating the first parallel arm rod with respect to the base end, the fulcrum located on the intermediate body is not clamped, and the second spring member is rotated with respect to the base end. a first locking mechanism that clamps the fulcrum located on the intermediate body when the first parallel arm rod is not rotated; and a first lock mechanism that clamps the fulcrum located on the intermediate body when the second parallel arm rod is rotated with respect to the intermediate body. a second lock mechanism that does not clamp the fulcrum located on the intermediate body and clamps the fulcrum located on the intermediate body when the second parallel arm rod is not rotated with respect to the intermediate body; A scissor arm for a dental treatment instrument mounting table, characterized by comprising: and.