JP4431851B2 - Tube feeding device for dental instruments - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dental treatment apparatus, and more particularly, to a flying arm system for extending and retracting an instrument with a tube suspended therein and a mechanism for storage.
[0002]
[Prior art]
Conventionally, when using the tube suspension method (flying arm method) to pull out and retract the instrument and store it, the amount of the instrument (handpiece) that has its own weight during treatment is increased, and the tube is extended. As the load on the tip increases, the burden on the wrist of the practitioner who operates the handpiece has increased.
In addition, since the lock mechanism is once provided in the middle of feeding the tube, it is necessary to perform the unlocking operation when stored.
[0003]
[Problems to be solved by the invention]
Accordingly, there is provided a dental treatment apparatus that can reduce the burden on the wrist of the practitioner at the time of the above-mentioned medical treatment, eliminate the lock mechanism, and perform the operation of the handpiece smoothly and efficiently.
[0004]
[Means for Solving the Problems]
In view of the above, the present inventor has solved this problem by the following means as a result of earnest experimental research.
The dental instrument tube before end dental instrument is mounted, a feeding device for a dental instrument having a flying arm that additionally provided freely pull the protruding and,
At the base of the flying arm, the flying arm can be stopped at a fixed angle between a rotation angle of 0 to 120 ° by a turning shaft to which the flying arm base is fixed and a feeding operation by a pulling operation of the dental instrument tube. A rotation mechanism,
And the rotation mechanism comprises a mechanism capable of maintaining the tensile load of the dental instrument tube substantially constant in the rotation range of 0 to 120 ° of the rotation axis ,
And the rotation mechanism in the mechanism that can maintain the tensile load of the dental instrument tube substantially constant,
A main roller embedded with a cylindrical base for fixing the base end of the long leaf spring for the flying arm;
A sub-roller that is coaxial and adjacent to it,
A lap spring wound between each roller and the rear shaft; and
A side plate for holding both ends of the shaft for the main roller and the sub roller and the lap winding spring;
In addition, on both sides of the main roller and the sub roller, pins for setting a rotation angle are disposed,
Furthermore, the main roller is provided with an acute cutout portion for driving the sub roller in a part of the adjacent portion to the sub roller.
Among the rotation angle setting pins, the side surface of the sub roller on the main roller side is configured to have a pin protruding inside the notch,
First, when the instrument is pulled forward until the tube rotation angle is vertical, only the main roller and the lap spring for the main roller are activated.
A balance is obtained by generating a light rebounding force against a light tensile load,
Next, when it is further advanced forward by an acute angle, in addition to the operation of the main roller and its lap winding spring, the sub roller and the lap winding spring for the sub roller are operated,
A dental instrument tube characterized in that a strong repulsive spring force is generated against a strong tensile load, so that a balance can be obtained. Feeding device.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external perspective view of the dental treatment apparatus of the present invention.
In the figure, 1 is a dental treatment device, 2 is a headrest, 3 is a backrest, 4 is a seat, 5 is an armrest, 6 is an overarm mounting base, 7 is an overarm, 8 is a side table, 9 is a light pole, 10 is Mounting board for flying arm, 11 operation panel, 12 three-way syringe, 13 micromotor handpiece, 14 air turbine handpiece, 15 scaler, 16 tube, 17 long leaf spring, 18 pinching roller , 19 is an assistant side operation panel, 20 is an assistant side instrument, 21 is a mounting handle, and 54 is a flying arm.
[0007]
As shown in the drawing, a tube 16 containing a pipe for air and water supplied to various instruments (three-way syringe 12, micromotor handpiece 13, air turbine handpiece 14, scaler 15), electric signal lines, and the like. A long leaf spring 17 for the flying arm 54 for attaching the tube 16 and standing the tube 16 is provided on the mounting base 10.
The tube 16 is supported upright by a sandwiching roller 18 provided on the long leaf spring 17 for the flying arm 54 and is suspended by the sandwiching roller 18 at the tip. .
A rotation mechanism 22 (FIG. 2) is provided inside the mounting base 10 to interlock with the rotation of the long leaf spring 17 for the flying arm 54 to which the instrument tube 16 is attached. It has been.
[0008]
FIG. 2 is an explanatory view showing the movement of the rotation mechanism and the instrument operation, and is a side view when the side plate of the mounting base is removed.
In the figure, 22 is a rotation mechanism, 23 is a cylinder for attaching a leaf spring, 24 is an instrument mounting table, 25 is a connector for a tube, 26 is a connector fixture, 27 is a connector for external connection, and 28 is an external through hole. , 29 is a set angle during storage, 30 is a rotation angle during intermediate operation, and 31 is a rotation angle during operation in the forefront.
As described above, the standing angle of the tube in the predetermined rotation mechanism is that the set angle 29 when the instrument is stored is an acute angle (30 °) behind the horizontal plane, and the rotation angle 30 during the intermediate operation. Is perpendicular to the horizontal plane (90 °), and the rotation angle 31 at the time of operation in the forefront is set to be an acute angle (30 °) with respect to the front from the horizontal plane. Corresponding to the extension of each instrument depending on the relative position to the oral cavity, it has the effect of being able to set the minimum tensile load. As shown in the figure, the operation of the instrument (air turbine handpiece 14) is roughly classified as in the above storage, intermediate operation, and foremost operation. The burden on the wrist of the practitioner can be minimized by a balance between the tensile load due to the instrument and the tension of the spring acting in the opposite direction. The operation of the rotating mechanism will be described below.
[0009]
FIG. 3 is an external perspective view of the rotating mechanism.
(A) The drawing shows the operating position during storage, (b) The drawing shows the operating position during intermediate operation, (c) The operating position during the foremost operation, (d) The drawing shows the storage position shown in FIG. The external appearance perspective view which looked at the operation position of from the other side is shown.
FIG. 4 is an explanatory view of the main roller overlap type winding spring of the rotation mechanism.
(A) The figure shows the spring position during storage, (B) the figure shows the spring position during the intermediate operation, and (C) the figure shows the spring position during the foremost operation.
FIG. 5 is an explanatory view of the sub-roller overlap type winding spring of the rotating mechanism.
(A) The figure shows the spring position during storage, (b) The figure shows the spring position during intermediate operation, (c) The figure shows the spring position during the foremost operation, and 32 is the lap winding spring of the main roller , 32 'are a plurality of winding springs, 33 is a sub-roller winding spring, 34 is a stacking spring winding shaft, 35 is a main roller side plate, 36 is a sub roller side plate, and 37 is a main roller. Notch, 38 is a main roller, 39 is a sub roller, 40 is a main roller side pin of the sub roller, 41 is a sub roller rotation stop upper pin, 42 is a rotation stop lower pin, 43 is a roller shaft fixing fastener, 44 is a side plate Fasteners 45, fasteners for winding shafts 46, main roller rotation stop pins 47, 48, 49, movement angles of winding screw tips, 50, main roller winding spring tip set screws, 51 sub-roller winding Spring end stopper The reference numeral 52 denotes a moving angle of the tip of the sub-roller winding spring.
[0010]
Initially, at the time of storage, as shown in FIG. 3 (a), the cylinder 23 having a base embedded in the main roller 38 for fixing the tube-attached leaf spring is inclined rearward at an acute angle (setting in FIG. 2). Angle 29). At this time, the main roller 38 is biased by the winding spring 32 (FIG. 4A).
However, as shown in FIG. 3 (d), the main roller rotation stop pin 46 is held on the outer end portion of the side plate 35 on the main roller side and is held in a predetermined position.
At this time, the sub roller 39 is not operating.
At the intermediate operation position, as shown in FIG. 3B, the cylinder 23 rises vertically (set angle 30 in FIG. 2). At this time, the urging force of the main roller 38 by the overlapping winding spring 32 is As shown in FIG. 4 (a), the urging force is large because the wrapping winding spring 32 moves as indicated by the movement angle 47 (after movement, the same figure (B)). Work so that it can be taken.
[0012]
At the foremost operation position, as shown in FIG. 3C, the cylinder 23 is inclined forward at an acute angle (set angle 31 in FIG. 2).
At this time, the urging force of the lap winding spring is newly shown in FIG. 5C by the rotation of the sub roller 39 (described later) in addition to the urging shown in FIG. The tension is added to further increase and work to balance the increasing tensile load.
That is, when the main roller 38 is inclined forward, the right end of the notch 37 of the main roller 38 presses the main roller side pin 40 of the sub roller, so that the sub roller 39 rotates together, and the sub roller rotation stop upper pin It rotates until 41 contact | abuts the upper-outer side of the side plate 36 by the side of a sub roller (FIG. 3 (c) figure).
Therefore, in the explanatory view of the sub-roller overlap type winding spring of FIG.
(A) The figure shows the spring position during storage, (b) The figure shows the spring position during intermediate operation, (c) The figure shows the spring position during forward operation,
At the time of (a) and (b), the sub-roller 39 does not operate as described above, and (c) when the state shown in the figure is reached, the tip of the winding spring 33 of the sub-roller moves as the movement angle 52. Therefore, the urging force is added to the urging force of the main roller 38 and further increases.
[0013]
Further, one end of each of the lap-type winding springs 32 and 33 is fastened to each roller, but the other end is free and used in a shape that is wound around a rear shaft (see FIGS. 4 and 4). 5. Fig. 6). And when using an instrument with a large load, it is possible to cope with an arbitrary load by overlapping a plurality of springs.
FIG. 6 is an external perspective view in which a plurality of winding springs are overlapped.
In the figure, 32 'indicates a plurality of winding springs, and 53 indicates torque.
As illustrated, one end of the winding spring 32 and the plurality of winding springs 32 ′ on the main roller 38 side is fixed by a screw 50, and the other end is wound around the spring winding shaft 34 in a free state. Worn. Accordingly, when the main roller 38 is rotated, for example, as the torque 53, the overlap is shifted by that amount. When the operation range is limited to 120 °, n times of torque can be obtained when n sheets are stacked. Can do.
The thickness of the spring can be selected from 0.1 to 0.3 mmt.
The intermediate operation means a case where the distance between the instrument mounting base and the patient is short, and a case where the same distance is long as the frontmost operation.
[0014]
When the medical treatment is finished and the instrument is stored, the reverse operation is performed. As described above, during the foremost operation or intermediate operation, the instrument and its tube are balanced in load and tensile tension, so the operator can push the instrument back. If it is added, it can be easily returned to the initial storage position in a natural manner by continuing the operation as it is.
[0015]
【The invention's effect】
According to the present invention, the following excellent effects are exhibited.
The dental instrument tube before end dental instrument is mounted, a feeding device for a dental instrument having a flying arm that additionally provided freely pull the protruding and, at the base of the flying arm The flying arm can be stopped at a fixed angle between 0 to 120 degrees of rotation by the rotation shaft to which the base is fixed and the instrument tube is pulled out, and the instrument is operated in the rotation range. Since it has a mechanism that can maintain the tube's tensile load substantially constant, the wrist of the practitioner is balanced by the balance between the tensile load caused by the instrument at the tube tip and the tension of the spring acting in the opposite direction at any position. Can be minimized. In addition, when the instrument is stored, the reverse operation is performed, and when the restoring force is applied, it can be easily returned to the initial storage position in a natural manner by continuing the operation as it is.
The rotating mechanism includes a main roller in which a base of a cylinder for fixing the base end of the long leaf spring for a flying arm is embedded, a sub-roller that is concentrically adjacent to the main roller, and each roller and a rear portion. A lap-type winding spring wound between the shafts and side plates for holding both ends of the main roller, sub-roller and lap-type winding spring shafts are provided. An angle setting stop pin is provided, and the main roller is provided with an acute notch, and a pin projecting inside the notch is provided on the side of the setting roller on the main roller side of the sub roller. Because it is configured with
When the instrument is first advanced forward to the vertical rotation angle of the tube, only the main roller and its winding spring operate, generating a light repulsive spring force against a light tensile load and obtaining a balance. When it is extended forward, in addition to the operation of the main roller and its winding spring, the sub-roller and its winding spring are operated, and a strong repulsive spring force is generated against a strong tensile load, and a balance can be obtained. When stored, it can be stored in a well-balanced manner by the reverse of the above action. And, one end of the winding spring is fastened to each roller, but the other end is free and used only in a shape wound around the rear shaft, and when using an instrument with a large load, Arbitrary loads can be handled by overlapping a plurality of springs.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a dental treatment apparatus according to the present invention. FIG. 2 is an explanatory view showing movement of a rotation mechanism and instrument operation. FIG. 3 is an external perspective view of the rotation mechanism. FIG. 5 is an explanatory diagram of a sub roller winding spring of a rotating mechanism. FIG. 6 is an external perspective view in which a plurality of winding springs are overlapped.
1: Dental treatment device 2: Headrest 3: Backrest 4: Seat 5: Armrest 6: Overarm mounting base 7: Overarm 8: Side table 9: Light pole 10: Flying arm mounting base 11: Control panel 12: Three Way syringe 13: Micro motor handpiece 14: Air turbine handpiece 15: Scaler 16: Tube 17: Long leaf spring 18: Clamping roller 19: Assistant side operation panel 20: Assistant side instrument 21: Mounting handle 22: Rotation mechanism 23: Plate spring mounting cylinder 24: Instrument mounting table 25: Tube connector 26: Connector fixing tool 27: External connection connector 28: External pipe hole 29: Set angle 30 during storage: Intermediate operation Rotation angle 31 when operating at the forefront Rotation angle 32: Main roller overlapping winding spring 32 ': Plural winding springs 33: Sub roller overlapping winding spring 34: Spring winding shaft 35: Main roller side plate 36: Sub roller side plate 37: Notch portion of main roller 38: Main roller 39: Sub roller 40: Main roller side pin of sub roller 41: Sub roller rotation stop upper pin 42: Rotation stop lower pin 43: Roller shaft fixing fastener 44: Side plate fastener 45: Winding shaft stopper 46: Main roller rotation stopping pins 47, 48, 49 are moving angles of the winding screw tips 50: Main roller winding spring tip set screw 51: Sub roller winding spring tip set screw 52: Sub roller winding Moving angle 53 of the contact spring tip: Torque 54: Flying arm

Claims (1)

A dental instrument feeding device having a flying arm in which a dental instrument tube having a dental instrument attached to a tip thereof is attached to be freely drawn out and retracted.
At the base of the flying arm, the flying arm can be stopped at a fixed angle between rotation angles 0 to 120 ° by a turning shaft to which the flying arm base is fixed, and feeding by a pulling operation of the dental instrument tube. A rotation mechanism,
And the rotation mechanism comprises a mechanism capable of maintaining the tensile load of the dental instrument tube substantially constant in the rotation range of 0 to 120 ° of the rotation axis ,
And the rotation mechanism in the mechanism that can maintain the tensile load of the dental instrument tube substantially constant,
A main roller embedded with a cylindrical base for fixing the base end of the long leaf spring for the flying arm;
A sub-roller that is coaxial and adjacent to it,
A lap spring wound between each roller and the rear shaft; and
A side plate for holding both ends of the shaft for the main roller and the sub roller and the lap winding spring;
In addition, on both sides of the main roller and the sub roller, pins for setting a rotation angle are disposed,
Furthermore, the main roller is provided with an acute cutout portion for driving the sub roller in a part of the adjacent portion to the sub roller.
Among the rotation angle setting pins, the side surface of the sub roller on the main roller side is configured to have a pin protruding inside the notch,
First, when the instrument is pulled forward until the tube rotation angle is vertical, only the main roller and the lap spring for the main roller are activated.
A balance is obtained by generating a light rebounding force against a light tensile load,
Next, when it is further advanced forward by an acute angle, in addition to the operation of the main roller and its lap winding spring, the sub roller and the lap winding spring for the sub roller are operated,
A dental instrument tube characterized in that a strong repulsive spring force is generated against a strong tensile load, so that a balance can be obtained. Feeding device.

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