JPH03163Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a handpiece with an illumination device that cuts a workpiece while illuminating the tip and surrounding area of a cutting tool attached to a grip or head. .

Prior Art A handpiece capable of mutually rotating a gripping part and a power part is disclosed in West German Patent Publication No. 3132995.
It is known by the number. In that case, the end face of the power part at the grip side end has a light transmission ring for the transmission of light to the light conductor provided in the grip. The light transmission ring can be used either directly from the incandescent bulb or indirectly by an intermediate light conductor into which the light is fed by the incandescent bulb.
Provided with light. The side end portion of the photoconductor provided on the grip portion is configured as a light receiving ring. The arrangement of such a light transmitting ring as well as a receiving ring leads to insufficient illumination of the area of the tooth to be treated, since, inter alia, light losses due to unavoidable light scattering occur.

Purpose In order to eliminate the above-mentioned drawbacks, the present invention aims to transmit light directly from an incandescent light bulb to a light guide provided in a grip in a handpiece with an illumination device in which each part of the handpiece can rotate relative to each other. The purpose is to make it possible.

Configuration FIGS. 1 to 3 show the configuration of an embodiment of the present invention, in which 1 is a power section in which an electric motor 2 (see FIG. 2) is installed, and 3 is a front end surface of the power section 1. A cylindrical mounting tube protrudes from the tip surface of the power section 1 so as to cover the rotating shaft 4 (see Fig. 2) of the electric motor 2 protruding from the periphery, and 5 indicates the eccentricity of the tip surface of the power section 1. The two contacts protruding at the positions 6 and 6 are the power unit 1.
(see Figure 2), this conductor 6
One end is attached to the contact point 5, and the other end is a jack lighting pin (not shown) installed at the rear end of the power unit 1.
It is connected to the. Reference numeral 7 denotes an air supply hole drilled in the mounting tube 3, and 8 denotes an air supply path that extends from the power section 1 to the attachment tube 3 and is attached to the power section 1 and the attachment tube 3 (see Fig. 2). One end of the passage 8 is connected to the air supply hole 7, and the other end is connected to an air supply pipe (not shown) of the jack. 9 is a water supply hole bored in the mounting tube 3, and this water supply hole 9 is connected from the power section 1 to the attachment tube 3.
The power section 1 and the mounting tube 3 are connected parallel to the air supply path 8.
It is connected to a water supply pipe (not shown) of a jack installed at the rear end of the power unit 1 via a water supply pipe (not shown) attached to the power unit 1. Reference numerals 10 are 3 provided around the outer peripheral wall surface of the mounting tube 3 so as to be located on the front end side of the air supply hole 7, between the air supply hole 7 and the water supply hole 9, and on the rear end side of the water supply hole 9. Book O-ring, 11
12 is a locking groove recessed in the circumferential direction on the outer peripheral wall of the mounting tube 3, and 12 is a hose whose tip is connected to the plug 13 and whose rear end is connected to a unit stand (not shown). , a power conductor (not shown) that connects the power pin receiver (not shown) of the plug 13 and the power source (not shown), and the lighting pin receiver (not shown) of the plug 13 and the lighting power source. (not shown), an air supply pipe (not shown) that connects the air supply pipe receiver (not shown) of the plug 13 and the air supply source (not shown), A water supply pipe (not shown), etc. that connects a water supply pipe holder (not shown) and a water supply source (not shown) is installed inside.
Plug 13 is attached to the jack installed at the rear end of power section 1.
When inserted, the power conductor (not shown) of the power section 1 is connected to the power source for power, the contact 5 is connected to the lighting power source via the conductor 6, and the air supply hole 7 is connected to the air supply source via the air supply path 8. , the water supply holes 9 are each connected to a water supply source via a water supply pipe. 14 is a ring in which two ring-shaped contact plates 15 are arranged concentrically in the radial direction with respect to the center line on the front end surface, and two contact points 16 (see FIG. 2) are arranged on the rear end surface. When the terminal plate 14 is fixed onto the distal end surface of the power unit 1 with a cap nut 17, the contact 16 connected to the contact plate 15 comes into contact with the contact 5. 18 is a rotation adapter in which a cylindrical mounting tube 20 is protruded from the tip surface of the ring-shaped base 19; 21 is a light source protruded at an eccentric position on the tip surface of the base 19; 22 is the rear of the base 19; Two sliders protrude from eccentric positions on the end surface so as to be movable in parallel to the center line (see Figure 2).
These sliders 22 are connected to the light source 21 via springs 23 (see FIG. 2) that press the sliders 22. 24 is an air supply pipe protruding from an eccentric position on the tip surface of the base body 19; 25 is an air supply groove recessed in the circumferential direction on the inner peripheral wall surface of the mounting tube 20 (see FIG. 2); Connect the other end to the air supply groove 25 and connect the other end to the air supply pipe 2.
4, respectively, from the mounting tube 20 to the base body 19.
Air supply path (see Figure 2), 27
28 is a water supply pipe protruding from an eccentric position on the tip surface of the base body 19, and 28 is a water supply groove (see Fig. 2) recessed in the circumferential direction on the inner circumferential wall of the paving cylinder 20; A water supply channel (not shown), which is connected to the pipe 27 and the other end to the water supply groove 28, is formed in parallel to the air supply channel 26, extending from the base body 19 to the mounting tube 20. Reference numeral 29 denotes an O-ring attached to the tip of the air supply pipe 24 and the tip of the water supply pipe 27; 30 is a set screw screwed into the base 19; the set screw 30 is screwed into the base 19; When the distal end of the rotary adapter 18 is engaged with the locking groove 11, the rotation adapter 18 is rotatably attached to the distal end of the power section 1. 31
32 is a button protruding from the outer circumferential wall of the base body 19 so as to be movable in the radial direction, and 32 is a locking claw (see Fig. 3) protruding from the outer circumferential wall of the mounting tube 20 so as to be movable in the radial direction. Interlocking button 31 and locking claw 3
2 is biased in the radial direction by a spring means (not shown), protrudes to the outside of the mounting tube 20, and engages with an engaging portion (not shown) of the gripping portion 33, so that the gripping portion 3
3 and the adapter 18 cannot be moved in the axial direction, and when the button 31 is pushed toward the center against the spring force of the spring means, the locking claw 32 is also drawn into the mounting tube 20, and the engaging claw 32 The engagement between the gripping portion 33 and the gripping portion 33 is released, allowing the gripping portion 33 and the adapter 18 to move in the axial direction.
8 can be separated. Reference numeral 33 denotes a contra-angle grip with a rotating shaft 34 (see Fig. 2) attached to the center, 35 a mounting hole formed at the rear end of the grip 33 (see Fig. 2), and 36 a Grip part 33
A receiving hole for the light source 21 is drilled at an eccentric position on the rear end surface (see Fig. 2), an optical fiber 37 is attached to the grip part 33, and the light receiving end 38 of the optical fiber 37 is in the receiving hole. 36 (see FIG. 2), and its light-emitting end 39 is provided protruding from the tip of the grip portion 33. Reference numeral 40 denotes a receiving hole for the air supply pipe 24, which is bored at an eccentric position on the rear end surface of the gripping part 33; 41, an air supply passage formed in the gripping part 33;
1 has one end connected to the receiving hole 40 and the other end connected to a blow pipe (not shown) protruding from the tip of the grip part 33, and also has an air supply path 41 and an air supply path 41 in the grip part 33. Parallel water supply channel (not shown)
, one end of which is a receiving hole (not shown) for the water supply pipe 27 bored at an eccentric position on the rear end surface of the gripping part 33
The other end is connected to a fountain pipe (not shown) protruding from the tip of the gripping part 33. 42
Reference numeral denotes a head portion equipped with a drive mechanism (not shown) and a stop means (not shown) for stopping the cutting tool 43 at the tip of the drive mechanism.

In this embodiment configured in this way, first, when the set screw 30 is screwed in and the rotation adapter 18 is rotatably attached to the tip of the power unit 1, the slider 22 comes into contact with the contact plate 15. Along with this, air supply hole 7
is connected to the air supply groove 25, and the water supply hole 9 is connected to the water supply groove 28, so even if the rotation adapter 18 rotates, the slider 22 is connected to the contact plate 15, and the air supply hole 7 is connected to the air supply groove 25. , the water supply hole 9 moves along the water supply groove 28, and the light source 21 moves along the spring 23, the slider 22,
It is always connected to the conductor 6 via the contact plate 15 and the contacts 16 and 5, and the air supply pipe 24 is connected to the air supply path 26,
The water supply pipe 27 is always connected to the air supply path 8 through the air supply groove 25 and the air supply hole 7.
8, the water supply groove 28 and the water supply hole 9,
It is always in communication with the water supply channel of the power unit 1. Next, the mounting tube 20 is inserted into the mounting hole 35, the light source 21 is inserted into the receiving hole 36, the air supply pipe 24 is inserted into the receiving hole 40, and the water supply pipe 2 is inserted into the receiving hole 36.
7 into the receiving holes of the gripping part 33 and engaging the locking claws 32 into the locks (not shown) of the gripping part 33, the light emitting end of the light source 21 is connected to the light receiving end 38 of the optical fiber 37. facing each other, and the air supply pipe 24 is connected to the air supply path 4
1, with the water supply pipes 27 connected to the water supply channels of the gripping part 33, the gripping part 33 is connected to the rotation adapter 1.
It is fixed to the tip of 8. Therefore, a cutting tool 43 of a desired shape is attached to the head section 42 inserted into the tip of the gripping section 33, and the electric motor 2 is driven to rotate the cutting tool 43, and at the same time, the light source 21 is energized. When emitted, the light emitted from the light source 21 is irradiated from the light emitting end 39 of the light source 21 to the tip of the cutting tool 43 and its surroundings, illuminating the tip of the cutting tool 43 and the treatment area. be done.

4 and 5 show the structure of another embodiment of the present invention, in which the same reference numerals as those in FIGS. 1 to 3 indicate the same parts, and 44 indicates the mounting There are two ring-shaped contact plates arranged concentrically on the outer circumferential wall of the tube 3 in a direction parallel to the center line. connected to one end. 45
are two sliders (see FIG. 4) that protrude from the inner peripheral wall surface of the mounting tube 20 so as to be movable in the radial direction, and these sliders 45 are supported by springs 46 that press the sliders 45.
(See FIG. 4) is connected to the light source 21.

In this embodiment configured as described above, in the rotary adapter 18, the contact plate 15 is disposed on the distal end surface of the power section 1, as shown in the embodiments of FIGS. Instead of protruding from the rear surface of the base 19, a contact plate 44 is provided around the outer peripheral wall of the mounting tube 3, and a slider 45 is provided protruding from the inner peripheral wall of the mounting tube 20. When the rotary adapter 18 is rotatably attached to the tip of the power unit 1 by screwing in the screw 30, the slider 45 comes into contact with the contact plate 44, so even if the rotary adapter 18 rotates,
The slider 45 moves along the contact plate 44, and the light source 21 is always connected to the conducting wire 6 via the spring 46, the slider 45, and the contact plate 44. Therefore, a cutting tool 43 of a desired shape is attached to the head section 42 inserted into the tip of the gripping section 33, and the electric motor 2 is driven to rotate the cutting tool 43.
1 is energized to emit light, the light emitted from the light source 21 is irradiated from the light emitting end 39 of the light source 21 to the tip of the cutting tool 43 and its surroundings through the optical fiber 37. and the treatment area is illuminated.

6 and 7 show the structure of still another embodiment of the present invention, and the same reference numerals as those in FIGS. 1 to 3 indicate the same parts, and 4
Reference numeral 7 denotes an air supply hole (see FIG. 6) formed in the inner peripheral wall surface of the grip portion 33, and this air supply hole 47 is connected to the air supply path 41.
It is connected to the. Reference numeral 48 denotes a water supply hole (see FIG. 6) formed in the inner circumferential wall of the grip portion 33, and this water supply hole 48 is connected to a water supply channel 49 provided in the grip portion 33 in parallel with the air supply path 41. ing. 50 is the grip part 33
A pin receiving hole is drilled at an eccentric position on the rear end surface (see Fig. 6), 51 is a ring-shaped rotation adapter,
Reference numeral 52 indicates a light source protruding from an eccentric position on the tip surface of the rotation adapter 51, and reference numeral 53 indicates two slides protruding from an eccentric position on the rear end of the rotation adapter 51 so as to be movable in a direction parallel to the center line. These sliders 53 are springs 5 that press the sliders 53 (see FIG. 6).
4 (see FIG. 6) to a light source 52. Reference numeral 55 denotes a set pin protruding from an eccentric position at the tip of the rotation adapter 51; 56 is a set screw screwed into the rotation adapter 51;
6 into the rotation adapter 51, and then tighten the setscrew 5.
When the distal end of the power section 6 is engaged with the locking groove 11, the rotation adapter 51 is rotatably attached to the distal end of the power section 1. Reference numeral 57 denotes a button protruding from the outer circumferential wall of the rotary adapter 51 so as to be movable in the radial direction, and 58 is a locking pawl protruding from the tip of the rotary adapter 51 so as to be movable in the radial direction, which interlock with each other. Button 5
7 and the locking pawl 58 are biased in the radial direction by spring means (not shown), and when the button 57 is pushed toward the center against the spring force of the spring means, the locking pawl 58 is also biased. Move toward the center.

In this embodiment configured in this way, first, when the set screw 56 is screwed in and the rotation adapter 51 is rotatably attached to the tip of the power unit 1, the slider 53 comes into contact with the contact plate 15. Therefore, even if the rotation adapter 51 rotates, the slider 53 moves along the contact plate 15, and the light source 52 moves along the spring 54 and the slider 5.
3. It is always connected to the conductor 6 via contacts 16 and 5. Next, the mounting tube 3 is inserted into the mounting hole 35, the light source 52 is inserted into the receiving hole 36, the locking pin 55 is inserted into the pin receiving hole 50, and the locking claw 58 is inserted into the locking hole of the grip portion 33. (not shown), the light emitting end of the light source 52 faces the light receiving end 38 of the optical fiber 37, and the air supply hole 7 is connected to the air supply hole 47, and the water supply hole 9 is connected to the water supply hole 48, respectively. , the gripping portion 33 is fixed to the tip of the rotation adapter 51. Therefore, a cutting tool 43 of a desired shape is attached to the head section 42 inserted into the tip of the gripping section 33, and the electric motor 2 is driven to rotate the cutting tool 43, and at the same time, the light source 52 is energized. When emitted, the light emitted from the light source 52 is irradiated from the light emitting end 39 of the light source 52 to the tip of the cutting tool 43 and its surroundings, illuminating the tip of the cutting tool 43 and the treatment area. be done.

In the description of the embodiment of the present invention, an example was explained in which the contact plate was installed on the power unit side and the slider was installed on the rotating adapter side. The movers may be installed on the power unit side. Further, in the description of the embodiments of the present invention, a contra-angle type gripping portion has been described as an example, but a straight type gripping portion with a cutting tool attached to the tip may also be used.

Effects As is clear from the above explanation, according to the present invention, the incandescent light bulb and the grip can rotate together, so that light can be sent directly from the incandescent light bulb to the photoconductor power provided in the grip. This makes it possible to avoid the optical losses that would occur in the known case due to the arrangement of the optical transmission ring as well as the reception ring.

In addition, it is no longer necessary to provide an incandescent light bulb in each of the grips equipped with treatment instruments that need to be replaced frequently during dental treatment, and therefore, it is no longer necessary to provide an incandescent light bulb in each of the grips equipped with treatment instruments that need to be replaced frequently during dental treatment. The structure of the holding part becomes simple.

Further, according to the present invention, it is possible to easily engage and disengage the rotation adapter part and the grip part by a simple push button operation, and at the same time, the light source and the light from the light source can be introduced. It is possible to easily align the light guide with the light receiving section.

There are advantages such as

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the configuration of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a connecting portion between a power unit, a rotation adapter, and a gripping unit in an embodiment of the present invention. Third
The figure shows the configuration and assembly of one embodiment of the present invention, and FIG. 4 shows the power section of another embodiment of the present invention,
Cross-sectional view of the connection part between the rotation adapter and the grip part, No. 5
The figure is a diagram showing the configuration and assembly of another embodiment of the present invention, and FIG. 6 is a cross-sectional view of the connecting portion between the power section, the rotation adapter, and the gripping section of still another embodiment of the present invention. 7 are diagrams showing the structure and assembly of still another embodiment of the present invention. 1... Power unit, 21, 52... Light source, 33...
Grip portion, 37... optical fiber, 38... light receiving end,
39... Light emitting end, 42... Head part, 15, 44
... Contact plate, 18, 51 ... Rotating adapter, 2
2, 45, 53...Slider.

Claims (1)

[Scope of utility model registration request] a power section; an elongated replaceable gripping section rotatably connected to the power section about the axis of the handpiece; and a treatment instrument disposed at an end of the gripping section remote from the power section. comprising an incandescent light bulb disposed in the handpiece and a photoconductor disposed in the grip with the end remote from the power section directed towards the area of the treatment instrument, the treatment of the photoconductor In a handpiece with an illumination device capable of sending light from an incandescent bulb to the end on the far side of the instrument, the illumination device is removably provided at the end facing the gripping part of the power part and is centered around the axis of the handpiece. It has a rotatable pivot adapter part, the incandescent light bulb is provided in the pivot adapter part, and the pivot adapter part has an engaging part that engages with the opposing engaging part of the grip part. , when the opposing engaging portions and the engaging portion are engaged, the ends of the incandescent light bulb and the photoconductor on the side remote from the treatment instrument are aligned in a line;
and the incandescent lamp rotates together with the gripping part relative to the power part, the sliding contact cooperating with the contact ring connects the incandescent lamp with the supply line in the power part, and the pivot adapter part rotates with the grip part relative to the power part. A button provided on the outer peripheral wall of the adapter part and movable in the radial direction;
It has a locking pawl that interlocks with the button through a spring means, and when the adapter portion is engaged with the gripping portion, the locking pawl is engaged with the gripping portion by the spring means. A lighting device characterized in that the adapter section and the grip section are both immovable in the axial direction, and the adapter section is movable in the axial direction with respect to the grip section when the button is pressed. Comes with handpiece.