JP2003290256A - Free pipe arm apparatus for scattered material suction apparatus for dental treatment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a free pipe arm apparatus in which the operation of a free pipe arm is simplified and a stable holding state is obtained. <P>SOLUTION: In the free pipe arm apparatus for freely moving/holding the suction port of a scattered material suction apparatus for dental treatment, a plurality of pipes are linked by a turn joint and in said turn joint, a plurality of free rotatable spheres locked on the joint end face of one suction pipe and energized in the direction of protrusion are located at prescribed intervals in the form of circumferences having the same diameter. On the joint end face of the other pipe, a plurality of recesses having semi-spherical cross sections are formed at prescribed intervals in the shape of the circumference having the same diameter as the location of said spheres, the spheres and the recesses having the semi-spherical cross sections are fitted/non-fitted continuously when turning the pipes, and a coupling nut is located on the joint part of said suction pipes for adjusting the interval of the mutual joint end faces. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a universal pipe arm device for freely moving / holding a suction port of a suction device for mainly sucking scattered substances during dental treatment.

[0002]

2. Description of the Related Art Conventionally, Japanese Unexamined Patent Publication No. 7-88119 (contamination preventing device in a dental office), Japanese Unexamined Patent Publication No. 8-141005 (extraoral vacuum device for dental use), and Japanese Unexamined Patent Publication No. 8-238261 (free arm for dental suction device). Device)
No. 299785 discloses a technique of a universal pipe arm device of a dental suction device, and the technical content thereof is as follows. (1) Japanese Patent Laid-Open No. 7-88119 (contamination prevention device for dental clinics) Two rotating cylinders each having a pipe connection port for connecting a pipe to each other are faced to each other, and a tightening bolt penetrating both rotating cylinders is used. It uses three rotating parts that are tightened and rotatably butting two rotating cylinders. The pipes connected to the respective pipe connection ports are moved up and down by the rotating function of the rotating parts. By allowing it to rotate freely in any direction, the intake port can be freely arranged in front of the patient's oral cavity, and the rotating friction of the rotating portion can be adjusted by the tightening condition of the tightening bolt. It was done.
There is no description of the structure of connecting the pipe to the pipe connection port, and it can be considered that the structure is integrally connected by welding or adhesion as far as the figure shows. In addition, the pipe is a method of inserting three short pipes into one pipe by making the outer diameter of the tip end portion of one pipe smaller than the inner diameter of the other pipe and gradually increasing the outer diameter. , Providing flanges at both ends of both pipes, tightening these flanges with bolts or spring type flange fasteners, etc., providing a screw at the outer diameter end of the pipe, and screwing this screw on the outside of both pipes (2) Japanese Unexamined Patent Publication No. 8-141005 (Extraoral Vacuum Device for Dental Use) This is composed of three pipes, and the pipes are bellows pipes that are indirect parts. It is connected by a flexible part that is made up of a pipe, and at the bottom of this indirect part, a pipe and a tip are fixed to the pipe like a bracing rod, perhaps computer controlled, Hopefully provided piston-cylinder is a hydraulic type, "in conjunction with the intake port 11 with the movement of the treatment chair 1, movable into ..... desired position" is obtained by the. (3) Japanese Unexamined Patent Publication No. 8-238261 (Free Arm Device for Dental Suction Device) Four arm members, which are paired on the left and right, are connected, and the connecting members make the arm members rotatable and the frictional resistance rotates. A clutch mechanism that becomes larger in the direction is provided at four places, and a bellows-shaped flexible hose is sandwiched and set between the arm members. (4) Japanese Unexamined Patent Publication No. 2001-299785 (Contaminant purification device in a medical office) An elbow is provided at the ends of two long pipes, a supporting portion made of a plate is fixed to the elbow, and an end of a tension spring is used as a supporting portion. Although one end is attached to the pipe to allow the elbows to rotate with each other, the connection structure is not described.

[0003]

[Problems to be Solved by the Invention]

In the prior art (1), when the folding angle between the pipes is widened, a large weight is applied to the rotating portion at the base, so that the suction hood is spread in the widened state (the state in which the free arm extends). It is necessary to tighten the tightening bolts strongly in order to stably stop at the desired part.However, it is possible if the pipe is short, but if it is long, the tightening strength should be strong. Therefore, there is a drawback in that the rotation resistance is too large and it is difficult for the therapist to operate with one hand, and if the tightening is loose and easy to operate, the stop of the suction hood becomes unstable. In addition, in order to disassemble and wash the inside of the pipe and the inside of the rotating portion, it is necessary to remove the tightening bolts with a spanner or the like and disassemble, and there is a drawback that it takes time to disassemble and assemble. The conventional technique (2) has a drawback that a control device for controlling the piston cylinder is required and it is difficult to perform a fine manual operation. Further, in order to disassemble the pipe in order to clean it, it is necessary to remove the piston cylinder, which is very difficult to disassemble and assemble. In the prior art of the above (3), when the arm member is extended, the resistance friction of the clutch mechanism becomes very large, and in order to change the state from this state to the folded state by hand, it is necessary to operate with one hand. The clutch resistance is difficult and easy to operate, and there is a drawback that the stop of the suction hood becomes unstable. In addition, there is a drawback that it is difficult to clean the inside of a long hose for cleaning. In the prior art (4), the tension spring must have a strong urging force in order to stably stop the free arm in the extended state, and the tension spring is stopped by the urging force of the spring in the folded state. However, if the urging force of the tension spring is weakened, a stable stop in the extended state cannot be obtained. Further, in order to disassemble for cleaning, it is necessary to remove the tension spring, and the connection that allows the elbows to rotate is required to have a structure that prevents the elbows from coming off. There was a drawback that it was difficult to disconnect and connect in the range. As described above, in the conventional technology, it is not possible to easily perform the same light and easy operation with one hand in both the extended state and the non-extended state of the free arm, and the suction port is stable at any place. It has the drawback that it is difficult to stop and the operability is poor. In addition, the pipes are very dirty because proteins, bacteria, chemicals, etc. adhere to them.If left undisturbed, they will cause bacteria to propagate, mold, and odors. Although desirable, the prior art
Both have the drawback that they are difficult to disassemble and assemble or difficult to clean.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and its object is to easily operate one hand with less resistance in any state of the operation of the universal pipe arm. However, it is an object of the present invention to provide a universal pipe arm device capable of obtaining a stable stop of the suction port. Another object of the present invention is that the operation of the universal pipe arm can be easily performed with one hand with little resistance in any state, and a stable stop of the suction port can be obtained at any position, and anybody can easily disassemble and assemble. (EN) It is possible to provide a universal pipe arm device that can be cleaned and can easily clean the inside of a joint and the inside of a pipe.

[0006]

The present invention has the following features to attain the object mentioned above. The first aspect of the present invention is to freely move the suction port of the dental treatment scattered substance suction device.
In a universal pipe arm device for holding, a plurality of pipe parts are connected by a rotary joint part, and the rotary joint part projects a plurality of freely rotatable spherical bodies that are prevented from coming off from a joint end surface of one suction pipe. Are urged in the direction to be arranged at predetermined intervals in a circular shape having the same diameter, and a plurality of hemispherical concave portions having a semi-spherical cross section are formed on the joint end surface of the other pipe in a circular shape having the same diameter as the arrangement of the spherical body Arranged at an arrangement interval narrower than the arrangement interval of the spherical body so that the fitting and non-fitting state of the spherical body and the recess having a hemispherical cross section continuously occur when the pipe rotates.
It is characterized in that a coupling nut is arranged at the joint portion of the suction pipe to press and separate the joint end surfaces from each other.

The second aspect of the present invention is, in the universal pipe arm device for a dental treatment scattered substance suction device of the first aspect of the present invention, a male screw portion provided on one pipe portion is screwed to a flange of the other pipe portion. Is engaged with the back surface of the.

The third aspect of the present invention is the universal pipe arm device for a tooth treatment scattered substance suction device according to the first or second aspect of the present invention,
The compression urging means is attached to the pipe portion on one side of the rotary joint portion so that the one pipe portion side is rotatable, and the joint end face side of the one pipe portion is free from the one pipe portion. In this state, the biasing means mounting body is provided, the other side of the compression biasing means is rotatably mounted to the biasing means mounting body, and the biasing means mounting body is mounted on the pipe portion side of the other side. It is characterized in that a mounting body fixing portion for fixing the pipe portion on one side so as not to rotate is provided.

According to a fourth aspect of the present invention, in the universal pipe arm device for a dental treatment scattered substance suction device according to the third aspect of the present invention, an air cylinder for compressing the air sealed by the compression urging means to obtain a repulsive urging force. Characterize.

A fifth aspect of the present invention is the universal pipe arm device for a tooth treatment scattered substance suction device according to any one of the first to fourth aspects of the present invention, wherein the suction device is provided on the back side of the portion near the suction port provided in the pipe portion. It is characterized in that a manual operation switch is provided.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. However, the description of the embodiments and the drawings do not limit the technical scope of the present invention.

[Embodiment 1] In Embodiment 1 of the present invention shown in FIGS. 1 to 8, 1 is a universal pipe arm device, and the universal pipe arm device 1 is a suction device (not shown). An elbow-shaped pipe portion 3 that is detachably attached to a universal arm mounting pipe 2 that is a suction pipe that is erected in communication and an elbow that is rotatably joined to the pipe portion 3 by a rotary joint portion 4. Form pipe part 5, a pipe arm 8 made up of a long pipe 7 having the pipe part 5 fixed at one end and an elbow form pipe part 6 at the other end, and pivoting to the pipe part 6. An elbow-shaped pipe portion 10 that is rotatably jointed by a joint portion 9, and an elbow-shaped pipe portion 12 is provided on the elbow-shaped pipe portion 10 by fixing the pipe portion 10 at one end and by holding the gripping pipe 11 at the other end. A pipe arm portion 14 composed of a long pipe 13 rotatably provided, an elbow-shaped pipe portion 16 rotatably joined to the pipe portion 12 by a rotary joint portion 15, and the pipe portion 16 A pipe arm 1 comprising a pipe 18 fixed to one end and detachably fitted with a suction port 17 at the other end.
It consists of 9.

At one end of the pipe portion 3 is attached a stopper body 20 made of a thick ring for stopping the free arm attachment pipe 2, and at this stopper body 20, a rotation made of a plate through which the other end of the pipe portion 3 is passed. The blocking portion 21 is fixed by a screw, and the rotation blocking portion 21 is provided with a rotation blocking shaft 22 and a fall prevention stopper 23 that prevents the pipe arm 7 from falling backward. An adapter 25 having a flange 24 is fixed to one end of the pipe portion 5, and a hemispherical recess 30 having a depth slightly shallower than the hemisphere in cross section is continuously formed on the end face 29 of the flange 24 of the adapter 25 on the same circumferential line. Many are formed. An adapter 33 having a flange 32 having an external thread 31 engraved on the outer periphery is fixed to the other end of the pipe portion 3, and the end surface portion 34 of the flange 32 of the adapter 33 that abuts against the end surface portion 29 of the flange 24 of the adapter 25. Is a hemispherical recess 3 that is slightly deeper than the hemisphere in cross section.
5 are provided at the same intervals on the circumference of the same diameter of the concave portion 6 at 6 places, and the concave portion 35 is made of metal or hard resin balls 3
6 is retained and is rotatably installed. A through hole 54 in which a female screw is further engraved is formed in the bottom of the hemispherical recess 35 slightly deeper than the hemispherical cross section, and a spring 55 elastically deformed in the through hole 54 is formed in a plug 53 in which a male screw is engraved.
The ball 36 urged in the concave portion 35 is urged in a direction projecting from the end surface 34 of the flange 32. A knurled eye 26 is formed on the outer peripheral surface, and a female screw 27 that engages with a male screw 31 on the outer periphery of the flange 32 of the adapter 33 is engraved at one end thereof, and is engaged with the rear surface of the flange 24 of the adapter 25 at the other end. A coupling nut 28 having a mating flange portion is installed by screwing the female screw 27 thereof into the male screw 31 of the adapter 33. By rotating the coupling nut 28, the end face portion 29 of the flange 24 of the adapter 25 and the adapter 3 are rotated.
The distance between the flange 32 and the end surface 34 of the flange 3 is adjustable, and the adapter 25, the adapter 33, and the coupling nut 28 form the rotary joint 4. An urging means attachment body 38 is rotatably provided between the other end of the coupling nut 26 of the pipe portion 5 and a fixed ring 37 fixed on the pipe portion 5, and the urging means attachment body 38 is rotatably provided.
One end of an air cylinder 39 that compresses air sealed through a cylinder mounting shaft 41 to obtain a repulsive urging force is rotatably connected to the. The other end of the air cylinder 39 is the cylinder mounting portion 4 provided in the middle of the long pipe 7.
It is rotatably attached to 0. The urging means attachment body 38 is provided with a through hole 42 of the rotation preventing shaft 22, and the rotation preventing shaft 22 is passed through the through hole 42, so that the urging means is provided even if the pipe arm 8 rotates. Since the mounting body 38 does not rotate, the air cylinder 39 expands and contracts in accordance with the rotation of the pipe arm 8 to exert a repulsive biasing force to constantly bias the pipe arm 8.

A rotary joint having the same structure as the rotary joint section 4 between the pipe section 3 and the pipe section 5 is provided between the pipe section 6 and the pipe section 10 and between the pipe section 12 and the pipe section 16. The part 9 and the pivot joint part 15 are formed.

The operation of the rotary joint section will be described by taking the rotary joint section 4 as an example. When a turning force is applied to the pipe portion, a spherical body 36 rotatably arranged on the joint end surface 34 of the one pipe portion 3 opposes the urging means to form the recess 3
When the fitting state with the recess 30 having a hemispherical cross section formed in the joining end face 34 of the other pipe portion 5 that is buried in 5 is released and the rotation is continued, the spherical bodies 36 are adjacent to each other. It fits in the hemispherical recess 30, and as it rotates, it shifts to a fitted or non-fitted state continuously and alternately. The spherical body 36 is the hemispherical recess 3
In the case of shifting from the fitting state of 0 to the non-fitting state, since the overcoming resistance works according to the urging force of the urging means,
The riding resistance allows the pipe portion to be stably held at a predetermined position. Since the rotation of the pipe arm is operated by pushing or pulling the end that is the suction port of the pipe arm,
Due to the action of the lever, even a small force can be operated with one hand without feeling strong resistance to climb over. Since the compression force urging means is arranged in the rotary joint portion, a more stable holding force can be exerted.

The grip pipe 11 is provided with a grip 47 and a manual operation switch 48 of a suction device, and an adapter 50 having a flange 49 having a male screw 32 engraved is fixed to the tip of the pipe portion 12. An adapter 52 having a flange 51 is fixed to the tip of the pipe portion 16, and the coupling nut 28 is rotatably provided so as not to come off by the flange 51. The adapter 50, the adapter 52, and the coupling nut 28 form the rotary join portion 15.

In addition to these, the recess 30 and the metal ball 36 may be composed of a sliding roller, and there are various forms such as the recess corresponding to this. Also,
Depending on the form of the adapter, the joint end face portion on which the recess 30 and the metal ball 36 are provided has a flange protruding outward and is sandwiched by a sandwiching body fixed to the other side, and the recess 30 and the like are provided at this sandwiching portion. There are forms.

[0018]

Since the present invention has been described above, it has the following effects.

According to the structure of the present invention, in the rotary joint portion connecting one pipe portion and the other pipe portion, the rotatable spherical body is urged toward the joint end face portion of the one pipe portion so as to project forward. And a plurality of them are arranged, and a concave portion having a hemispherical cross section is formed on the joint end face portion of the other pipe portion, and fitting and non-fitting of the spherical body and the hemispherical concave portion are alternately and continuously performed by the rotation of the pipe portion. When the spherical body rides over the hemispherical concave portion due to the rotation of the pipe portion, the ride-over resistance works according to the biasing force of the biasing means of the spherical body. The extended state and the stop position of the suction port can be stably maintained so that the pipe arm does not rotate even in the extended state, and the extension and contraction operation of the pipe arm pushes or pulls the end of the pipe arm which is the suction port. To operate An effect that realizes the comfort and ease can be operated with one hand without feeling strongly overcoming resistance by a small force by leverage. Further, according to the configuration of the present invention, it can be easily rotated with one hand, and adjustment of the pressing force of the joint end surface portion, connection and disconnection of the pipe can be performed by screwing with the coupling nut and the male screw portion provided on the other side. Since it is carried out, it is possible to obtain an effect that the pipes can be easily and easily separated from each other and cleaned, and that the pipes can be easily assembled. The pipe arm on one side is provided with a compression urging means such as a piston cylinder and a compression coil spring, so that the holding force of the pipe arm can be increased by the urging force, so that the spherical body rides on the hemispherical recess. The resistance to exceed can be made smaller, and the resistance to manual operation can be made smaller to make it more comfortable and
In addition to realizing ease, the pipe arms can be separated from each other with the compression urging means attached to one pipe arm side, so there is no need to remove parts other than the pipe when disassembling, and there is no risk of parts being lost and disassembly. -The effect that the assembling is easy can be obtained. Since the manual operation switch is provided near the suction port, operability is improved.

[Brief description of drawings]

FIG. 1 is an assembled perspective view of a first embodiment of the present invention.

FIG. 2 is an assembled perspective view of a root portion according to the first embodiment of the present invention.

FIG. 3 is a sectional view of a rotary joint section according to the first embodiment of the present invention.

FIG. 4 is an assembled exploded perspective view of the first embodiment of the present invention.

FIG. 5 is a perspective view of components according to the first embodiment of the present invention.

FIG. 6 is a perspective view of components according to the first embodiment of the present invention.

FIG. 7 is a perspective view of components according to the first embodiment of the present invention.

FIG. 8 is a perspective view of components according to the first embodiment of the present invention.

[Explanation of symbols]

1: Universal pipe arm device 2: Free arm mounting pipe 3: Pipe section 4: Rotating joint 5: Pipe section 6: Pipe part 7: Long pipe 8: Pipe arm 9: Rotating joint part 10: Pipe part 11: gripping pipe 12: Pipe section 13: Long pipe 14: Pipe arm 15: Rotating joint part 16: Pipe part 17: Suction port 18: Long pipe 19: Pipe arm 20: Stopper body 21: Rotation blocking part 22: Rotation prevention shaft 23: Fall prevention stopper 24: Flange 25: Adapter 26: Knurled eyes 27: Female screw 28: Coupling nut 29: Joined end face 30: hemispherical recess 31: Male screw 32: Flange 33: Adapter 34: Joined end face part 35: hemispherical recess 36: Metal ball 37: Fixing ring 38: Biasing means mounting body 39: Air cylinder 40 cylinder mounting part: 41: Cylinder mounting shaft 42: Through hole 43: Flange 44: Adapter 45: Flange 46: Adapter 47: Hand grip 48: Manual operation switch 49: Flange 50: Adapter 51: Flange 52: Adapter 53: Plug 54: Through hole 55: Spring

Claims (5)

[Claims] 1. A universal pipe arm device for freely moving and holding a suction port of a dental treatment scattered substance suction device, wherein a plurality of pipe parts are connected by a rotary joint part, and the rotary joint part is one suction device. A plurality of spherical bodies that are prevented from coming off from the joint end face of the pipe and are rotatably urged in the projecting direction are arranged at predetermined intervals in a circle with the same diameter, and a plurality of cross sections are formed on the joint end face of the other pipe. The hemispherical recesses are arranged in a circumferential shape having the same diameter as the arrangement of the spherical bodies at an arrangement interval narrower than the arrangement interval of the spherical bodies, and the spherical body and the concave portions having a hemispherical cross section are fitted and unfitted. A dental treatment scattered substance suction device characterized in that a coupling nut is arranged so as to be continuously generated when the pipe is rotated, and presses and separates the joint end faces from each other at the joint portion of the suction pipe. Universal pipe arm device for use. 2. The coupling nut of the rotary joint portion is screwed with a male screw portion provided on one pipe portion,
The universal pipe arm device for a tooth treatment scattered substance suction device according to claim 1, which engages with a back surface of a flange of the other pipe portion. 3. A compression urging means is attached to a pipe portion on one side of a rotary joint portion so that one pipe portion side is rotatable, and the one pipe portion is attached to a joint end face side of the one pipe portion. A biasing means mounting body is provided in a state free from the portion, the other side of the compression biasing means is rotatably mounted to the biasing means mounting body, and the biasing means is mounted on the pipe portion side on the other side. 3. The tooth treatment scattered substance suction device according to claim 1, further comprising an attachment body fixing portion for fixing the means attachment body together with the pipe portion on one side so as not to rotate. Pipe arm device. 4. The universal pipe arm device for a tooth treatment scattered substance suction device according to claim 3, wherein the compression urging means is an air cylinder for compressing the sealed air to obtain a repulsive urging force. 5. The dental treatment scattered substance suction device according to claim 1, wherein a manual operation switch of the suction device is provided on the back side of the portion near the suction port provided in the pipe part. Universal pipe arm device for use.