JP5358400B2 - Dental instrument holder, dental care tray table and dental care unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dental instrument holder which can hold a plurality of dental instruments so as to be directed to a position suitable for operator's work by a simple adjustment work, not to interfere with each other, and not to hinder taking out and in work, and to provide a tray table for dental clinical use and a unit for dental clinical use using the holder. <P>SOLUTION: The instrument holder 4 includes a plurality of instrument holding members 9-13. The plurality of instrument holding members 10-12 are respectively supported in a parallel state rotatable around axis centers of spindles 10a-12a via the spindles 10a-12a with respect to a holder base 40 and connected with each other via an interlocking member 19. The plurality of instrument holding members 10-12 is constituted so as to swing and rocking all together accompanied with rotation around the respective axis center, by operating the interlocking member 19. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a dental instrument holder capable of detachably holding a dental care instrument, a tray table for dental care provided with the dental instrument holder, and a dental care unit. It is.

  The dental treatment unit as described above includes a dental treatment table on which a patient sits or lies on his / her face to receive treatment, and a dental treatment tray table supported by a hanger arm or the like on the side of the treatment table, or a treatment A dental treatment tray table provided separately from the table and movably provided, a dental instrument holder provided on the side of the tray table, and a working medium conduit led out from the tray table is provided. And various instruments attached to the tip of the tube. These instruments are removably held in the dental instrument holder. Patent Documents 1 and 2 disclose a dental instrument holder used in such a dental medical unit.

  The instrument holder disclosed in Patent Document 1 is provided so as to be able to rotate in the horizontal direction and the vertical direction via a plurality of arms with respect to the tray table. The holder is provided with a plurality of holding portions arranged in parallel, and is configured to be able to take out an instrument with respect to each holding portion.

Moreover, the instrument holder disclosed in Patent Document 2 includes a plurality of holder bodies that are rotatably mounted around the rotation axis via a rotation axis perpendicular to one side of the tray table. The main body has an instrument receiver that can be rotated up and down, and the instruments held by the holder main bodies are configured to be individually adjustable in the horizontal and vertical directions.
JP 2000-24059 A JP 2008-178504 A

  FIG. 16 is an explanatory view showing an example of a medical treatment mode in a conventional dental medical unit, which is similar to that disclosed in Patent Document 1, and can be swung horizontally with respect to a dental medical tray table. Fig. 4 shows an example of the use state of a dental care unit with an attached dental instrument holder. A dental practice unit 500 shown in FIG. 16 includes a dental examination table 501 on which a patient sits or lies on his / her face to receive treatment, and a dental examination tray table that is movably supported by a hanger arm 502 on the side of the examination table 501. 503, a dental instrument holder 504 attached to the side of the tray table 503 so as to be horizontally rotatable, and a plurality of tubes mounted on the distal end of a tube that is led out from the tray table 503 and has a working medium conduit. And dental instruments 505. These dental instruments 505 are held in a holding portion 504a provided in the dental instrument holder 504 so as to be freely taken out. The dental instrument holder 504 is supported by the tray table 503 via a vertical support shaft 504b so as to be rotatable around its axis.

  In such a dental practice unit 500, an operator (doctor or nurse) D moves around the patient's head on the dental examination table 501 to perform proper positioning, and according to this position movement, The dental care tray table 503 is pulled to a position where it can be easily handled. Then, a medical instrument or medicine placed on the tray table 503 is used, or a dental instrument 505 is appropriately taken out from the dental instrument holder 504 to perform medical work. FIG. 16 shows a state in which the right-handed operator D performs medical treatment at a so-called 9 o'clock position. The holding portions 504a provided on the dental instrument holder 504 are formed so that the dental instruments 505 held by the holding portions 504a face a position that is easy for the operator to handle. By the way, as described above, when the tray table 503 is moved in accordance with the operator's medical position, the dental instruments 505 held by the holding portions 504a are directed toward the patient on the dental examination table 501. In some cases, this may interfere with the removal of each dental instrument 505 or may give a patient a feeling of pressure. Therefore, as shown in FIG. 16, after the tray table 503 is positioned at an appropriate position, the dental instrument holder 504 is rotated around the vertical support shaft 504b, thereby providing a dental instrument 505. Adjustments are made to change the direction of…. However, by rotating the dental instrument holder 504, the dental instrument 505 at a position away from the vertical support shaft 504b is moved away from the operator D, and this causes a deterioration in the smoothness of medical work. Sometimes. Further, depending on the orientation of the dental instrument holder 504 and the relative positional relationship with the operator D, as an example, when the operator D performs medical treatment at the 9 o'clock position, it is not shown in FIG. When the dental instrument holder 504 is rotated so as to approach the operator D in order to increase access to the dental instrument 505 at a position away from the vertical support shaft 504b, the instrument is used. When the instrument 505 is taken out or returned, it may interfere with the adjacent dental instrument 505 and interfere with the work.

  On the other hand, in the case of the dental instrument holder disclosed in Patent Document 2, each holder body is individually supported so as to be rotatable around the rotation axis with respect to the tray table. It can be adjusted individually, and as described above, it is less likely that any instrument is far from the operator and the smoothness of medical work is impaired. On the other hand, since it is the structure which adjusts the direction of an instrument individually, adjustment work to the suitable direction performed for every instrument may be troublesome. Also, depending on the orientation, adjacent instruments may interfere with each other, resulting in inconveniences such as obstructing the taking out and returning of the instruments.

  The present invention has been made in view of the above, so that a plurality of dental instruments are always directed to an appropriate position for an operator's work, and the instruments do not interfere with each other, and are taken out and returned. It is an object to provide a dental instrument holder that can be held so as not to cause trouble and can be easily adjusted, and a dental care tray table and a dental care unit using the same. And

A dental instrument holder according to a first invention is a dental instrument holder provided with a plurality of instrument holding members, wherein each of the plurality of instrument holding members is attached to a holder base. Te, via a support shaft is provided for each instrument holding member of the plurality, while being supported by the rotatable and parallel state to each of the axis around the support shaft, they are connected to each other via the interlocking member The plurality of instrument holding members can be swung and swung simultaneously in the parallel direction of the instrument holding members with the rotation around the respective axes by the operation of the interlocking member. It is characterized by being.

  In the present invention, a non-interlocking instrument holding member that does not participate in the interlocking member may be further included. Further, at least one of the connecting portions of the plurality of instrument holding members with respect to the interlocking member may include a connection releasing means.

  Further, in the present invention, a differential mechanism is further connected to the interlocking member, and is supported so as to be rotatable around the axis of the support shaft via a support shaft and connected to the differential mechanism. An instrument holding member configured to swing swinging the instrument holding member coupled to the differential mechanism differently from the other instrument holding members by the operation of the interlocking member. You may do it.

  Further, in the present invention, the instrument holding member is rotatably supported with respect to the holder base via the support member, and the instrument holding member is attached to the support member so as to be tiltable up and down. Anyway.

  In the present invention, the interlock member may be a link member, and a parallel link mechanism may be configured by the holder base, the plurality of instrument holding members, and the link member. Alternatively, the support shaft may be fixed to the instrument holding member, and the interlocking member may be constituted by an endless cable-shaped transmission member that is stretched around the support shaft. A timing belt, a chain, etc. are employ | adopted as this endless cable-shaped transmission member.

  A dental care tray table according to a second aspect of the present invention is a dental care tray table movably attached to a side portion of a dental care table, wherein any one of the dental instrument holders is a tray table body. It is provided in one side part.

  A dental treatment unit according to a third aspect of the present invention includes a dental treatment table, a dental treatment tray table movably attached to a side portion of the dental treatment table, and a plurality of dental treatment instruments. It is a medical unit, wherein the dental medical tray table includes any one of the dental instrument holders, and the dental medical instrument holds the instrument of the dental instrument holder. It is possible to hold the member so as to be removable.

  According to the first to third aspects of the invention, the dental instrument can be detachably held with respect to each of the plurality of instrument holding members. It is possible to carry out work such as medical care by appropriately taking out the dental instrument. A plurality of instrument holding members are connected to each other via an interlocking member, and the operation of the interlocking member causes the plurality of instrument holding members to rotate simultaneously around the respective support shafts. Since it is configured so that it can swing and swing, the positional relationship between the plurality of instrument holding members can be maintained while the holder base is stationary, i.e., the dental treatment tray table is stationary. Thus, the orientation of the dental instruments held by these can be adjusted appropriately. Therefore, by adjusting the orientation of the dental instruments, some instruments move away from the surgeon, displace to unmanageable positions, and the surgeon is stressed during removal. There is no such thing. Further, there is no complication such as adjusting the direction for each instrument holding member. In particular, in the case of dental practice, the surgeon moves around the patient's head lying on the dental examination table between the so-called 3 o'clock position, 12 o'clock position, and 9 o'clock position. The tray table is pulled to a position that is easy for the operator to handle, and the medical work is performed. As in the present invention, when the dental instrument holder is provided on the tray table, the tray table and each dental instrument are placed. The relative position with the instrument holder is always maintained in an appropriate position in relation to the operator, and when adjusting the orientation of the instrument held in the dental instrument holder in relation to the patient, etc. These will be adjusted all at once, which is extremely reasonable. In addition, since the orientation of the dental instrument can be easily adjusted, the adjustment does not hinder the flow of medical work. Furthermore, since adjustment to an appropriate position is possible regardless of the hand of the surgeon, the manufacturing of the dental instrument holder and the dental care tray table can be rationalized.

  If a non-interlocked instrument holding member that is not involved in the interlock member is further included, the orientation of the instrument may depend on the shape characteristics of the grip portion of the instrument, the operator's gripper, etc. It may be easier to handle if it does not fluctuate. In such a case, this non-interlocked instrument holding member can be selected, which is convenient. Further, if a connection release means is interposed at the connection portion of the instrument holding member with respect to the interlocking member, depending on the characteristics of the grip portion as described above, the operator's gripper, etc. Can be used in a non-linked state by releasing the connection with the interlocking member of the instrument holding member of the part, and can be switched to a connected state when it is necessary to interlock, By combining, it can respond to various usage modes.

  Depending on the shape characteristics of the grip part of the dental instrument, the proper orientation may differ from other instruments from the viewpoint of handleability. If the mechanism is connected and the instrument holding member connected to the differential mechanism swings differently from the other instrument holding members, the swing of the other instrument holding members is reduced. Since the direction can be changed in a swing range different from the moving range, it is possible to cope with such characteristics.

  When the instrument holding member is pivotally supported with respect to the holder base via a support member, and the instrument holding member is attached to the support member so as to be tiltable up and down, an instrument is provided. By appropriately adjusting the vertical tilt angle of the instrument holding member, not only the lateral angle of the instrument but also the vertical tilt angle can be adjusted as appropriate in consideration of handleability.

  When the interlocking member is composed of a link member and a parallel link mechanism is constituted by the holder base, the plurality of instrument holding members and the link member, the instrument holding member as described above is used. A mechanism that swings and swings all at once can be easily configured. Further, when the interlocking member is constituted by the endless cable-like transmission member, similarly, a mechanism for swinging and swinging all at once can be easily constituted.

  Hereinafter, the best mode of the present invention will be described with reference to the drawings. FIG. 1 is a conceptual overall perspective view showing an embodiment of a dental care unit of the present invention, FIG. 2 is a plan view of a dental care tray table of the present invention constituting the dental care unit, and FIG. FIG. 4 is a plan view including an interlocking mechanism portion of the dental instrument holder of the present invention assembled to the medical tray table, and FIG. 4 is a sectional view taken along line XX in FIG. 3 showing a support structure of the instrument holding member. 5 is a view as seen from the Y-line direction in FIG. 4, FIG. 6 is an exploded perspective view showing another embodiment of the support structure, and FIGS. 7A, 7B, and 7C are views in the dental instrument holder. FIG. 8A and FIG. 8B are explanatory views showing examples of medical treatment modes in the dental medical unit, and FIG. 9A and FIG. 9B are views showing the operation state of the parallel link mechanism portion including the differential mechanism. Differential mechanism and dental instrument holder The top view which shows the operation state of further another embodiment of a parallel link mechanism part, Fig.10 (a) (b) is operation | movement of other embodiment of the parallel link mechanism part containing the differential mechanism in a dental instrument holder. FIG. 11 is a plan view showing still another embodiment of the dental instrument holder, and FIGS. 12A and 12B show still another embodiment of the dental instrument holder. (A) is a top view, (b) is a front view. FIG. 13 is an exploded perspective view showing a support structure for an instrument holding member in the embodiment of FIG. 12, and FIGS. 14A, 14B, and 14C show an example of an instrument holding member having a connection releasing means. It is the perspective view seen from another angle, (b) (c) has shown the state where a part was notched. 15 (a) and 15 (b) show the use state of the connection release means, (a) is a perspective view of the mechanical part of the dental instrument holder as seen from the front side, and (b) is as seen from the back side. FIG.

  A dental practice unit A shown in FIG. 1 includes a dental examination table 1, a dental examination tray table (hereinafter abbreviated as a tray table) 2 disposed on the side of the dental examination table 1, and an operator. Although it comprises the operator's chair 3 to be seated, it goes without saying that other equipment, devices and the like necessary for dental treatment (not shown) are arranged in the vicinity of the dental examination table 1. The dental examination table 1 includes a seat plate sheet 1b that can be moved up and down with respect to the base 1a, a back plate sheet 1c that is connected to one end of the seat plate sheet 1b, and a top plate of the back plate sheet 1c. The headrest 1d is attached so as to be tiltable, and can be used for supine treatment and sitting treatment. A tray table 2 is installed on the side of the dental examination table 1 so as to be movable along the side of the dental examination table 1 via a hanger arm 2a that is equipped to protrude from the dental examination table 1. The hanger arm 2a is supported so as to be horizontally rotatable around a vertical support shaft 2b (see FIG. 2). The hanger arm 2a may be attached to a floor surface or a wall surface. Further, the tray table 2 may be a moving table with casters (not shown), and is movable within the reach of the operator's hand seated on the operator's chair 3, on which tweezers and the like are provided. Various medical instruments and medicines are placed and used for preparation work such as tooth filling.

  As shown in FIGS. 1 and 2, the tray table 2 includes a tray table main body 2A and a dental instrument holder 4 provided on the lower surface of one side portion. From the lower surface of the tray table body 2A, dental treatment instruments (hereinafter abbreviated as "instruments") 5 to 8 are connected to the tip, and working medium conduits ( Tubes 5a to 8a that house an interior (not shown) are led out. The illustrated instruments 5 to 8 are mainly used by an operator (doctor) seated on the chair 3, and include a micromotor handpiece 5, air turbine handpieces 6 and 7, and a three-way syringe 8. Removably connected to the tip of each tube 5a-8a. These instruments 5 to 8 are held by a dental instrument holder 4 as shown in FIG. 1 when not in use. Each of the working medium pipes is connected to a working medium supply source or a discharge destination (not shown) installed in the vicinity of the dental examination table 1. In addition to the above, examples of the dental medical instrument include a vacuum syringe, a scaler, an intraoral photographing instrument, and the like, and these are also held in the dental instrument holder 4 so as to be freely removable.

  A dental instrument holder (hereinafter abbreviated as “instrument holder”) 4 is a sheet metal holder base 40 (FIG. 3) fixed to a sheet metal base (not shown) of the tray table body 2A by screws or the like. And five instrument holding members 9 to 13 that are rotatably supported around the axis of the support shafts 9a to 13a via the support shafts 9a to 13a. Attachments 14 to 18 which are detachably attached to the respective instrument holding members 9 to 13, interlocking members 19 and a differential mechanism 20 for swinging the instrument holding members 9 to 13 as will be described later, 21. Of the five instrument holding members 9 to 13, the three instrument holding members 10 to 12 are in a parallel state in which all of them are oriented in the same direction, as shown in FIG. A fixed-side link member 41 fixed to the tip by a screw 40a so as to form a part of the holder base 40 is supported so as to be rotatable around each axis via the support shafts 10a to 12a. The interlocking member 19 is a movable side link member 19A, and the three instrument holding members 10 to 12 are connected to the movable side link member 19A at equal positions along the respective longitudinal directions from the respective support shafts 10a to 12a. It is pin-coupled (10b-12b). Accordingly, in the present embodiment, the fixed side link member 41, the movable side link member 19A, and the connecting members that share the action acting on the fixed side link member 41 and the movable side link member 19A (three in this embodiment). The instrument holding members 10 to 12 correspond to the parallel link mechanism. In addition, the two instrument holding members 9 and 13 on both sides are directly attached to the holder base 40 via the support shafts 9a and 13a at positions where the instrument holding members 10 and 12 are located behind the instrument holding members 10 to 12. It is supported so as to be rotatable around. The differential mechanisms 20 and 21 are connected to both sides of the movable side link member 19A, and the two instrument holding members 9 and 13 extend along the longitudinal direction of the respective support shafts 9a and 13a. At the same position, the differential mechanisms 20 and 21 are linked by pin coupling (9b and 13b). Details of the parallel link mechanism 190 and the differential mechanisms 20 and 21 will be described later.

  A support structure for the fixed-side link member 41 and the movable-side link member 19 </ b> A of the three instrument holding members 10 to 12 will be described with reference to FIGS. 4 and 5. 4 and 5 illustrate the instrument holding member 11, but the other instrument holding members 10 and 12 are similarly configured. The instrument holding member 11 is formed of a synthetic resin molded body and is formed of a cylindrical body that is opened downward. A mounting boss portion 110 is formed on the upper portion of the instrument holding member 11, and the boss portion 110 is pinned to the fixed side link member 41 and the movable side link member 19A via bolts (support shafts) 11a and 11b. Are combined. That is, the bolt 11a is inserted through the collar 11c, passes through the resin washer 11d, the fixed side link member 41, the resin washer 11e, and the spring washer 11f (disc spring, wave washer, etc.) 11f, and the boss Screwed into a female screw portion 110 a formed on the upper surface of the portion 110. This screwing is performed with compression of the spring washer 11f until it is regulated by the collar 11c, whereby the fixed side link member 41 and the holding member 11 are screwed together. In this threaded connection state, the collar 11c smoothly rotates the bolt (support shaft) 11a and reduces the wear of the steel material due to contact and friction between members, and the spring washer 11f is excessively compressed. Thus, friction along the longitudinal direction of the bolt 11a due to the compression reaction force of the spring washer 11f is applied between the fixed side link member 41 and the holding member 11. Therefore, the fixed side link member 41 and the instrument holding member 11 can be rotated around the axis of the bolt 11a with a resistance that can be manually operated.

  Further, the resin washer is inserted in the collar 11g at a position away from the screwing position of the bolt 11a in the boss portion 110 by a predetermined distance along the longitudinal direction of the instrument holding member 11. 11h, a movable side link member 19A, a resin washer 11i, and a spring washer (a disc spring, a wave washer, etc. are acceptable) 11j pass through and are screwed into a female screw portion 110b formed on the upper surface of the boss portion 110. As in the case of the bolt 11a, the screwing is performed until the spring washer 11j is compressed and is regulated by the collar 11g, whereby the movable side link member 19A and the instrument holding member 11 are screwed together. Bonds are made. In this threaded connection state, the collar 11g smoothly rotates the bolt (support shaft) 11b and reduces the wear of the steel material due to contact and friction between members, and the spring washer 11j is excessively compressed. Thus, friction along the longitudinal direction of the bolt 11b due to the compression reaction force of the spring washer 11j is applied between the movable side link member 19A and the instrument holding member 11. Therefore, the movable side link member 19A and the instrument holding member 11 can be rotated around the axis of the bolt 11b with a resistance that can be manually operated. In the method of screwing the movable side link member 19A and the instrument holding member 11 in this embodiment, the resin washer 11i and the spring washer 11j are not required as long as a strong screwing can be realized. Good. The resin washer 11h is desirably provided because it has an effect of preventing the boss portion 110 from being deformed by the movable side link member 19A.

  In the other two instrument holding members 10 and 12, the bolts 10a and 12a and the fixed side link member 41, and the bolts 10b and 12b and the movable side link member 19A are similarly pin-connected. The line segment connecting the bolts 10a, 11a, and 12a and the line segment connecting the bolts 10b, 11b, and 12b are parallel, the line segment connecting the bolts 10a and 10b, the line segment connecting the bolts 11a and 11b, and the bolt 12a. , 12b are made parallel to each other, thereby forming a parallel link mechanism 190. That is, when a force exceeding the friction force is applied to any one of the instrument holding members 10 to 12 around the axis of each of the support shafts (bolts 10a, 11a, 12a), the movable side link member 19A is moved to the left and right. The pin coupling portions (bolts 10b, 11b, 12b) are interlocked with each other, and the instrument holding members 10-12 are rotated around the axial centers of the bolts 10a, 11a, 12a. And swing swing all at once. Details of the swing swing mechanism will be described later with reference to FIG.

  The instrument holding member 11 is formed of a ring-opening cylindrical body having a ring-opening portion 111a that opens downward as described above, and an attachment 16 made of a synthetic resin molding is attached to and detached from the inner cylinder portion 111. It can be inserted freely. The attachment 16 is formed of a ring-opening cylindrical body having a ring-opening portion 161 a aligned with the ring-opening portion 111 a of the instrument holding member 11, and an instrument (air turbine handpiece) 6 is attached to the inner cylinder portion 161. It is comprised so that insertion can be hold | maintained. That is, the inner diameter of the inner cylinder portion 161 is slightly larger than the outer diameter of the grip portion 60 of the instrument 6, and the outer diameter of the grip portion 60 is slightly larger than the ring opening width of the ring opening portion 161a. ing. Further, the ring opening width of the ring opening portion 161a is made larger than the outer diameter of the tube 6a connected to the instrument 6, so that the tube 6a led out from the lower surface of the tray table 2 as shown in FIG. However, the instrument 6 is held by the attachment 16 in a state of being inserted into the ring-opening portion 161a, and the instrument 6 can be taken out from the attachment 16. The lower part of the front side of the attachment 16 is formed so as to protrude forward, and a drum-shaped guide roller 162 is rotatably supported on a shaft 162a installed on the ring-opening portion 161a of the protruding portion. This guide roller 162 is used for holding the tube 6a so as not to be detached from the attachment 16 when the dental instrument 6 is taken out and the tube 6a connected to the instrument 6 is extended. It is. Thereby, the operation when returning the instrument 6 to the inner cylinder portion 161 of the attachment 16 is also smoothly performed.

  In the illustrated example, the guide roller 162 can be accommodated together with the shaft 162a in a laterally-accommodating hole 163 formed in the lower part on the front side of the attachment 16, and the guide roller 162 can be smoothly used when the instrument 6 is used depending on the medical treatment mode. When lacking in the properties, the guide roller 162 can be accommodated in the accommodation hole 163 by operating the lever 162b formed integrally with the shaft 162a. The other attachments 14, 15, 17, and 18 are also configured in the same manner as the attachment 16. However, these attachments 14 to 18 are used with the diameter of the inner tube portion set according to the shape characteristics of various instruments. Depending on the user's convenience, it is selectively and appropriately inserted into the instrument holding members 9 to 13. In addition to this, although not illustrated in the drawing, the length of the inner cylinder portion 161 is set by providing an adapter member such as a chassis in the inner portion of the inner cylinder portion 161. It is selectively and appropriately inserted into the instrument holding members 9-13.

  At both ends of the movable side link member 19A, as shown in FIG. 3, linkages 20A and 21A constituting the differential mechanisms 20 and 21 are extended in a bowl shape. The instrument holding members 9, 13 can be moved by deformed elongated holes 20 a, 21 a formed in the linkages 20 A, 21 A and arc grooves 40 b, 40 c (see also FIG. 7) formed in the holder base 40. Bolts 9b and 13b constituting the side pin coupling portion are inserted so as to be capable of relative sliding contact, and thereby the differential mechanisms 20 and 21 are configured. In this way, the bolts 9b and 13b are inserted into the deformed long holes 20a and 21a and the arc grooves 40b and 40c, respectively, so that they can be slidable relative to each other. Due to the combined regulating action of the long holes 20a, 21a and the arc grooves 40b, 40c, the bolts 9b, 13b do not directly interlock with the movement of the movable side link member 19A, and behave differently in operating strokes. Therefore, when the movable side link member 19A is displaced left and right, the instrument holding members 9 and 13 to which the bolts 9b and 13b are coupled are different from the three instrument holding members 10 to 12 in the swing angle. Swing swings with different motion patterns. Details of the swing swing mechanism of the instrument holding members 9 and 13 by the differential mechanisms 20 and 21 will be described later with reference to FIG.

  The attachment structure of the instrument holding members 9 and 13 will be described with reference to FIG. FIG. 6 illustrates the instrument holding member 9, but the instrument holding member 13 is configured in the same manner only in the opposite direction. In FIG. 6, a mounting block 22 is arranged on the lower surface of the holder base 40 (see FIG. 3), and two female screw holes 22 a and 22 b are formed on the upper surface of the mounting block 22. Similar to the screwed configuration of the bolt 11a shown in FIG. 4, a bolt 9a inserted through a collar (not shown) includes a resin washer (not shown), a holder base 40, a resin washer (not shown), and a spring washer (not shown). (Not shown, a disc spring, a wave washer, etc. is also possible) and is screwed into one female screw hole 22a. In this screwed state, the mounting block 22 is supported by the holder base 40 so as to be rotatable around the axis of the bolt 9a in a state where friction is applied along the longitudinal direction of the bolt 9a. Further, a bolt 9b is screwed into the other female screw hole 22b. This screwing is performed by inserting the bolt 9b through a collar (not shown) and the deformed elongated hole 20a and the arc groove 40b of the linkage 20A. Through a friction applying member such as a resin washer and a spring washer. In this screwed state, the friction along the longitudinal direction of the bolt 9b is applied, and the bolt 9b is allowed to move in a range restricted by the deformed long hole 20a and the arc groove 40b. The attachment block 22 is supported on the holder base 40 and the linkage 20A.

  A lateral female screw hole 22 c is provided on the side surface of the mounting block 22, and an inverted L-shaped bracket 23 is attached to the female screw hole 22 c with a bolt 24. The bracket 23 and the mounting block 22 constitute a support member for the instrument holding member 9. That is, in a state where the bolt 24 is inserted into the collar 24d, the resin washer 24a, the vertical piece 23a of the bracket 23, the resin washer 24b, and a disc spring (a spring washer, a wave washer, etc. are also acceptable) 24c pass through, It is screwed into the female screw hole 22c. In this screwed state, friction is applied along the longitudinal direction of the bolt 24 by the compressed disc spring 24c, and the bracket 23 ensures smoothness of rotation around the bolt 24 by the collar 24d. At the same time, it is coupled to the mounting block 22 in a state where excessive screwing is prevented. The instrument holding member 9 is attached to and supported by the horizontal piece 23b of the bracket 23 so as to be suspended from the lower surface thereof by screwing the two bolts 25 and 26 together. The friction force by the disc spring 24c is tilted up and down when the instrument holding member 9 is held by hand and twisted around the axis of the bolt 24, and maintained at that position when released. Is set. Therefore, the vertical tilt angle of the instrument holding member 9 can be arbitrarily adjusted according to the convenience of the user. A restricting pin 22d is projected on the side surface of the mounting block 22, and an arcuate groove 23c whose center of curvature is the axis of the bolt 24 is formed in the longitudinally extending piece 23a of the bracket 23. The regulation pin 22d is inserted into the arc groove 23c, and the vertical tilt angle of the instrument holding member 9 is regulated by the arc groove 23c and the regulation pin 22d. The other instrument holding member 13 is also attached to the same bracket 27 by two bolts 28 and 29 (see FIG. 3), and is supported so as to be vertically tiltable with respect to the attachment block 30 (see FIG. 3). The support relationship with respect to the holder base 40 via the mounting block 30 and the bolt 13a, and the support relationship with respect to the holder base 40 and the linkage 21A via the bolt 13b inserted through the arc groove 40c and the deformed long hole 21a are as described above. This is the same as the support relationship of the mounting block 22. FIG. 3 shows that both instrument holding members 9 and 13 are supported in a state where their vertical inclination angles are different. The screw 24 can be screwed into the mounting block 22 with a double nut, which can prevent loosening over a long period of use.

Next, the swinging mechanism of the instrument holding members 9 to 13 by the parallel link mechanism 190 and the differential mechanisms 20 and 21 will be described with reference to FIGS. 7 (a), 7 (b), and 7 (c). In the drawing, the instrument holding members 9 to 13 are indicated by one-dot chain lines for convenience, and the direction of the one-dot chain lines indicates that they are along the longitudinal direction of the instrument holding members 9 to 13. In FIG. 7A, the front sides of the instrument holding members 9 to 13 are directed diagonally to the left, and the three instrument holding members 10 to 12 in the center are leftward with the same large inclination angle. It is suitable. Moreover, the two instrument holding members 9 and 13 on both sides face leftward with the same small inclination angle. Stationary bolt 9a of the instrument holding member 9, 13, 13a and the movable bolt 9b, the distance between 13b is Keru Contact the instrument holding member 10 to 12 is set equal to the same bolt distance. The arc grooves 40b and 40c constituting the differential mechanisms 20 and 21 have an arc shape centering on the axis of the bolts 9a and 13a, and the arc angle is the axis of the bolts 9a and 13a of the bolts 9b and 13b. The rotation range with fulcrum as the fulcrum. The rotation range of the bolts 9b and 13b is set to be smaller than the rotation range of the bolts 10b to 12b of the instrument holding members 10 to 12 with the shaft centers of the bolts 10a to 12a as fulcrums. Accordingly, the linkages 20A and 21A integrated with the movable side link member 19A act on the bolts 9b and 13b, but allow rotation within the rotation range regulated by the arc grooves 40b and 40c. As shown in the figure, odd-shaped long holes 20a and 21a having a substantially horizontal (reverse) shape in which a straight portion and an arc portion are combined are formed.

  The state shown in FIG. 7A indicates that each of the instrument holding members 9 to 13 has a maximum inclination angle to the left front. The holder base 40 is formed with an arc groove 40d for restricting the swing range of the movable side link member 19A, and a guide pin 19a inserted through the arc groove 40d is fixed to the movable side link member 19A. . The radius of curvature of the arc groove 40d is made equal to the distance between the bolts, and the arc length of the arc groove 40d regulates the swing movable range of the movable side link member 19A. In FIG. 7A, the guide pin 19a is positioned at the right end of the arc groove 40d. The bolt 9b in the right end instrument holding member 9 is positioned at the rear end of the straight portion of the deformed elongated hole 20a at the right end of the arc groove 40b, and the bolt 13b in the left end instrument holding member 13 is an arc. It is located at the left end of the arc portion of the deformed long hole 21a at the right end of the groove 40c. In this state, when an external force that swings and swings the instrument holding members 10 to 12 toward the right side acts on the instrument holding members 10 to 12, the friction force is resisted and the movable side link member 19A is interposed. The three instrument holding members 10 to 12 are simultaneously rotated counterclockwise around the axial centers of the respective bolts 10a to 12a to reach a neutral position as shown in FIG.

  In this transition process, the bolts 9b and 13b of the instrument holding members 9 and 13 at the right end in the arc grooves 40b and 40c are affected by the deformed elongated holes 20a and 21a and left in the arc grooves 40b and 40c. However, since the insides of the deformed elongated holes 20a and 21a are relatively slidably contacted with each other, the movement is performed at a speed slower than the swinging speed of the linkages 20A and 21A (movable side link member 19A). When 10 to 12 reach the neutral position, the instrument holding member 9 at the right end is deformed when the bolt 9b passes through the contact portion of the arcuate portion and the straight portion of the substantially irregular shaped long hole 20a. The neutral position is reached by the combination of the gap between the long hole 20a and the circular arc groove 40b and the sliding contact pressure received by the bolt 9b from the wall surface of the irregularly shaped long hole 20a. On the other hand, in the configuration of this embodiment, the leftmost instrument holding member 13 has a deformed elongated hole 21a in which the bolt 13b has a substantially reverse shape when the three instrument holding members 10 to 12 reach the neutral position. An irregularly shaped elongated hole 21a having a substantially reverse shape is processed so as to reach the contact portion between the arc portion and the straight portion. Therefore, the bolt 13b is not subjected to sliding contact pressure from the gap between the deformed long hole 21a and the arc groove 40c and the wall surface of the substantially reverse-shaped deformed long hole 21a, so the position of (a) is maintained. The tip of the instrument holding member 13 remains facing left. When the three instrument holding members 10 to 12 further advance the rotation, the tip of the instrument holding member 13 starts to rotate rightward and shifts to the state (c). Go. In this embodiment, the deformed long holes 20a and 21a are substantially in the shape of a reverse (reverse), but in addition to this shape, an inverted arc shape, a concave shape, or an inverted isosceles triangle shape as in the embodiment of FIG. Even with this, the above-described differential mechanism can be realized. Depending on the combination of the shape of the hole and groove, the timing of the differential and the rotation area of the holding member provided with the differential mechanism can be changed. In the differential mechanism, it is desirable that an appropriate differential is made and the instrument holding member is configured to have a sufficient rotation range.

  From the state shown in FIG. 7B, when an external force that swings and swings the instrument holding members 10 to 12 toward the right side is applied to the instrument holding members 10 to 12 in the same manner as described above. 7 (c), the front sides of the instrument holding members 10 to 12 face obliquely forward to the right, the guide pin 19a reaches the left end of the arc groove 40d, and the instrument holding members at both ends are held. The bolts 9b and 13b of the members 9 and 13 reach the left ends of the arc grooves 40b and 40c. This state is a state in which the inclination angle of the instrument holding members 9 to 13 toward the right front is maximum. Also in the process of shifting to this state, the shifting speed of the bolts 9b, 13b of the instrument holding members 9, 13 is slow, and the instrument holding members 10-12 are also at the maximum right side tilt position shown in FIG. It is in a state smaller than the inclination angle. As described above, the swing swinging mode of the instrument holding members 9 and 13 at both ends is different from that of the central instrument holding members 10 to 12 because of the kind and shape of the held instrument. Depending on the characteristics (particularly the shape of the grip part), the change in the direction does not affect the usability as far as the left. In the case of such an instrument, either one of the instrument holding members 9 and 13 at both ends is used. If it is held, overall instrument handling is improved. Also, the arrangement of the instrument holding members 9 and 13 having different swinging swings at both ends allows the right-handed operator or the left-handed operator to use them appropriately. Because it was intended.

  It should be noted that the positional relationship between the movable side link member 19A constituting the parallel link mechanism 190 and the fixed side link member 41 may be reverse to that in the illustrated example. Further, as the instrument holding member, a non-interlocked instrument holding member that is not involved in the movable side link member 19A may be included by a method of fixing to the fixed side link member 41 so as not to rotate. In the case of an instrument whose directionality in handling does not become a problem, the handleability of the overall dental instrument is improved as described above by holding the instrument holding member.

  8 (a) and 8 (b) are diagrams for explaining an example of a medical treatment mode in a dental medical unit A including the instrument holder 4 and the tray table 2 configured as described above. The state in which the surgeon D performs medical work between the so-called 12 o'clock position (a) to 9 o'clock position (b) is shown. As shown in the figure, the operator D performs dental treatment while appropriately moving around the patient's head. As shown in the drawing, the tray table 2 is drawn to a position where it can be easily handled as shown in the figure, and the medical treatment is performed. The position of the instrument holder 4 attached to the tray table 2 is also determined. However, the directions of the instruments 5 to 8 held by the instrument holder 4 are not necessarily suitable for the handling of the operator D, and the arm of the patient on the medical table 1 or the like. It may be suitable for. In such a case, if the surgeon D grasps any of the instrument holding members 9 to 13 and performs a rotation operation around the axis of the support shaft, the instrument holding members 9 to 13 are simultaneously moved. The dental medical instruments 5 to 8 can be turned in a direction suitable for handling and the like. In this case, since each of the instrument holding members 9 to 13 is supported in a state where a friction force is applied, the instrument holding members 9 to 13 can be stopped at the positions when the rotation operation is stopped. Also, since the swing swings all at once, adjacent instruments do not interfere with each other. In the case of a left-handed surgeon, medical treatment is often performed at the 3 o'clock position to the 12 o'clock position. In this case as well, the surgeon pulls the tray table 2 to a position where it can be easily handled, and each time the instrument is By adjusting the orientation of the holding members 9 to 13 so as to be, for example, the positions shown in FIGS. 7B to 7C, the handling property can be easily improved.

9A and 9B show a modification in which the holder base 401 and the fixed-side link member 411 are integrated. That is, the functions and effects of the parallel link mechanism 190 and the differential mechanisms 20 and 21 are the same as those described above, but in the example of FIG. 7, the screws 40a are fixed to the front side of the holder base 40 so as to form a part of the holder base 40. The separate fixed-side link member 41 that has been formed is the same member as the holder base 401 in the configuration of FIG. 9. That is, the difference is that the holder base 401 and the fixed side link member 411 are configured to form a part of the parallel link mechanism 190 by a single member. In addition, in this configuration, a swing swinging hole SH is formed in the holder base 401 so that the instrument holding members 10 to 12 can swing as described above. When the instrument holding members 10 to 12 swing and swing, the axis of pin coupling between the holding member and the fixed side link member 411 does not move, while the holding member and the movable side link member 19A The axis of the pin connection swings simultaneously with the rotation. In the case of the present embodiment, a fan-shaped swing swinging hole SH is formed in accordance with the movement trajectory of the bolts 10b to 12b, which are the centers of pin coupling between the instrument holding members 10 to 12 and the movable side link member 19A. did. Note that the shape of the swing swinging hole SH is not limited to the present embodiment. For example, the axis of pin coupling between the instrument holding members 10 to 12 and the movable side link member 19A corresponding to the swing range of the movable link member 19A regulated by the arc groove 40d formed in the holder base 401. When swinging (corresponding to 10b to 12b) swings, the swing swinging hole SH only needs to have a shape that does not hinder the swinging trajectory of the axis. Alternatively, the pivot range of the holding members 10 to 12 is regulated by adjusting the swinging orbit of the pin coupling axis (corresponding to 10b to 12b) between the instrument holding members 10 to 12 and the movable side link member 19A. In this case, the swing rocking hole SH may be formed in a shape that regulates the rocking trajectory of the shaft center (10b to 12b) so as to correspond to a desired rotation range. In the embodiment of FIG. 9, the member processing can be simplified, and the number of members can be further reduced. Therefore, the assembly process can be simplified, and the present invention can be implemented at a lower cost.
Moreover, the details of the support structure for the fixed side link member 411 and the movable side link member 19A of the instrument holding members 10 to 12 and the action of swing swing realized in the example of FIG. 9 are shown in FIG. Since it is the same as the example, the explanation is omitted. Common parts are denoted by the same reference numerals, and description thereof is omitted.

FIGS. 9A and 9B further show a modification of the differential mechanisms 20 and 21.
The state shown in FIG. 9A indicates that each of the instrument holding members 9 to 13 has a maximum inclination angle to the left front. At this time, the guide pin 19a is located at the right end of the arc groove 40d. The bolt 9b in the right end instrument holding member 9 is positioned at the left acute angle of the inverted isosceles triangular hole 20b at the right end of the arc groove 40b, and the bolt 13b in the left end instrument holding member 13 is in the arc groove 40c. Is located at the acute left angle of the inverted isosceles triangular hole 21b. In this state, when an external force that swings and swings the instrument holding members 10 to 12 toward the right side is applied to the instrument holding members 10 to 12, the bolts 9b and 13b are connected to the inverted isosceles triangular holes 20b and 21b. Relative sliding contact is made along the hypotenuse part of the periphery. As a result, similar to the example shown in FIG. 7, the three instrument holding members 10 to 12 are simultaneously rotated counterclockwise around the axis of each of the bolts 10a to 12a, as shown in FIG. 9B. Reach the neutral position. In this transition process, the differential mechanism using the inverted isosceles triangular holes 20b and 21b in FIG. Only the timing and the rotation region of the holding member provided with the differential mechanism are different, and the operational effects of the differential mechanism are the same as in the example of FIG. Therefore, common parts are denoted by the same reference numerals, and description thereof is omitted.

  10A and 10B show modifications of the differential mechanisms 20 and 21. FIG. That is, the configuration of the parallel link mechanism 190 is the same as described above, but link members 20B and 21B made of different members are attached to both ends of the movable side link member 19A by bolts 10b and 12b of the instrument holding members 10 and 12, respectively. They are different in that they are pin-coupled and connected in a toggle shape, and straight long holes 20c and 20d are formed on the front side of the link members 20B and 21B along the longitudinal direction thereof. The holder base 40 is formed with arc grooves 40b, 40c similar to those described above. The arc grooves 40b, 40c and the long holes 20c, 20d are bolts of the instrument holding members 9, 13 at both ends. 9b and 13b are inserted so that relative sliding contact is possible, and the holder base 40 and the link members 20B and 21B are pin-coupled. The bolts 9b and 13b are in a state in which the arc grooves 40b and the long holes 20c and the arc grooves 40c and the long holes 20d can be in sliding contact with each other. Therefore, as shown in FIGS. 10 (a) and 10 (b), when the movable side link member 19A swings left and right, the link members 20B and 21B are accompanied by rotation around the pin coupling portions (10b and 12b). Linked to this. At this time, the long holes 20c and 20d act on the bolts 9b and 13b, but this action is delayed from the operation of the movable side link member 19A by the length of the long holes 20c and 20d. The bolts 9b and 13b are slidably contacted in the arc grooves 40b and 40c in response to the action (tensile and pushing action) of the end portions of the long holes 20c and 20d, whereby the instrument holding members 9 and 13 Swing swinging at an angle smaller than the instrument holding members 10 and 12. Since the other configuration is the same as that of the example shown in FIG.

  FIG. 11 shows another embodiment of the interlocking member 19 and the differential mechanisms 20 and 21. In this example, timing pulleys 10aa to 12aa having the same diameter are fixed to bolts 10a to 12a as support shafts fixed to the instrument holding members 10 to 12 and pin-coupled to the fixed side link member 41 in the same manner as described above. Then, an endless timing belt (corrugated transmission member) 19B is stretched around the timing pulleys 10aa to 12aa, and this timing belt 19B is used as an interlocking member. Further, timing pulleys 9aa and 13aa having a diameter larger than that of the timing pulleys 10aa to 12aa are fixed to bolts 9a and 13a as supporting shafts of the instrument holding members 9 and 13 at both ends, and the timing pulley 10aa and the timing pulley 9aa. Between the timing pulley 12aa and the timing pulley 13aa, a timing belt 20C and a timing belt 21C are respectively stretched. Thus, the differential mechanisms 20 and 21 are configured.

In the case of this example, when an external force is applied to any one of the instrument holding members 10 to 12 so as to rotate about the axis thereof, the rotation action is applied to each timing pulley 10aa via the timing belt 19B. To 12aa, whereby the instrument holding members 10 to 12 swing together. The turning action is transmitted from the timing pulley 10aa to the timing pulley 9aa via the timing belt 20C, and from the timing pulley 12aa to the timing pulley 13aa via the timing belt 21C. At this time, since the timing pulleys 9aa and 13aa are larger in diameter than the timing pulleys 10aa and 12aa, the rotational angular velocities of the timing pulleys 9aa and 13aa are smaller than those of the timing pulleys 10aa and 12aa, so that the instrument is held. The swing swinging of the members 9 and 13 is performed at an angle smaller than that of the instrument holding members 10 to 12. Instead of such a transmission structure using a timing pulley and a timing belt, a transmission structure using a gear pulley and a chain can also be employed.
Since other configurations are the same as those in the above embodiment, the same reference numerals are given to common portions, and the description thereof is omitted here. In addition, the support structure with respect to the fixed side link member 41 of the instrument holding members 10-12 differs from the example shown in FIG. 3, and this is demonstrated in FIG.12 and FIG.13.

  The instrument holder 4 shown in FIGS. 12A and 12B is different from the example shown in FIG. 3 in the support structure for the fixed side link member 41 of the instrument holding members 10 to 12, but the other configurations are the same. It is. That is, the instrument holding members 10 to 12 are rotatably supported with respect to the fixed side link member 41 (holder base 40) via the brackets 31 to 33, and these instrument holding members 10 to 12 are connected to the brackets. It is attached to 31-33 so that it can tilt up and down. This support structure will be described with reference to FIG. Although FIG. 13 shows an example of the instrument holding member 11, the instrument holding members 10 and 12 are also rotatably supported by the fixed side link member 41 with the same configuration. In FIG. 13, the bracket 32 is formed of an inverted L-shaped piece comprising a lateral piece 32a and a longitudinal piece 32b, and two female screw holes 32c and 32d are formed in the lateral piece 32a. A bolt 11a as a support shaft is screwed into the female screw hole 32c, and the bracket 32 and the fixed side link member 41 (see FIG. 12) are pin-coupled by the bolt 11a through the friction applying means in the same manner as described above. The Further, a bolt 11b is screwed into the female screw hole 32d, and the bracket 32 and the movable side link member 19A (see FIG. 12) are pin-coupled by the bolt 11b through the friction applying means as described above. Similarly, the other brackets 31 and 33 are pin-coupled to the fixed side link member 41 and the movable side link member 19A, thereby forming a parallel link mechanism 190 as shown in FIG.

  The instrument holding members 9 and 13 at both ends in this embodiment move in the same manner as in FIG. 7, but there is play in the gap portion formed by the overlap of the long hole and the groove, so the user can handle them. As shown in FIG. 12A, both instrument holding members 9 and 13 can be set to the neutral position. The same applies to the examples shown in FIGS. 3 and 7.

  An attachment piece 35 having a hanging piece 35a is fixed to the upper surface of the instrument holding member 11 with bolts 35b and 35c. The mounting piece 35 and the bracket 32 constitute a support member for the instrument holding member 11. Similarly, attachment pieces 34 and 36 are fixed to the other instrument holding members 10 and 12 (see FIG. 12). A bolt insertion hole 35d is formed in the hanging piece 35a, and a nut 35e is fixed to the back surface thereof. In this case, the bolt insertion hole 35d may be a female screw hole to have a nut function. A bolt insertion hole 32e is formed in the vertical piece 32b of the bracket 32. A bolt 38 with a dial is inserted into the bolt insertion hole 32e through a disc spring 38a and a resin washer 38b. 38 is inserted into the bolt insertion hole 35d through a resin washer 38c and screwed into the nut 35e. The instrument holding member 11 is supported by the bracket 32 via the attachment piece 35 by screwing the bolt 38 with the dial. The other instrument holding members 10 and 12 are similarly supported by the brackets 31 and 33 via the attachment pieces 34 and 36 (see FIG. 12).

  When the dial part of the bolt 38 with dial is manually operated and loosened, the instrument holding member 11 can be rotated around the axis of the bolt 38 with the dial together with the mounting piece 35. Therefore, if the instrument holding member 11 is in a desired vertical tilt state and the dial-attached bolt 38 is screwed and fastened again, the instrument holding member 11 can be maintained in that state. In the other instrument holding members 10 and 12, the vertical tilt angle can be similarly adjusted by loosely tightening the bolts 37 and 39 with dials. An arcuate groove 32f whose center of curvature is the center of the bolt insertion hole 32e is formed in the longitudinal piece 32b of the bracket 32, and a pin projecting from the hanging piece 35a of the mounting piece 35 is formed in the arcuate groove 32f. 35g is inserted so that mutual sliding contact is possible. The vertical tilting range of the instrument holding member is regulated by the insertion relationship in which the pins 35g can slide in contact with the arc groove 32f. In this embodiment, a bolt with a dial is used as a member for performing a loose tightening operation. In addition, a hexagon bolt, a handle-shaped bolt, and a stopper such as a bicycle saddle adjustment unit are also provided. It is desirable to employ a member that can perform at least a firm fastening and a simple loosening operation.

  As described above, each of the instrument holding members 10 to 12 is supported so as to be tiltable up and down, whereby the vertical tilt angle can be individually set according to the shape characteristic of the instrument. It is possible to optimize handling of each instrument. For example, in the case of contra-angle type instruments, the upward angle is reduced, and in the case of straight type instruments, the upward inclination angle is increased, etc., depending on the shape characteristics of each instrument. It is possible to optimize the sex.

  14 (a), 14 (b), 14 (c) and 15 (a) and 14 (b), the instrument holding members 10 to 12 are provided with connection release means for enabling the connection with the interlocking member 19 to be released. An example is shown. FIGS. 14A, 14B, and 14C show an example of the instrument holding member 11. FIG. A mounting boss portion 110 is formed on the upper part of the instrument holding member 11, and the mounting boss portion 110 is used as a support shaft that is pin-coupled to the fixed-side link member 41 (see FIG. 3 and the like) as described above. The bolt 11a is screwed together, and the instrument holding member 11 is supported by the fixed side link member 41 so as to be rotatable around its axis via the bolt 11a. Further, in place of the bolt 11b that is pin-coupled to the movable side link member 19A (see FIG. 3 and the like), a lock pin 11c that can be protruded and projected from its upper surface is accommodated in the mounting boss portion 110. The lock pin 11c is elastically biased upward by a compression spring 11d accommodated in the mounting boss 110. An operation lever 11ca that protrudes to the rear side of the mounting boss 110 is provided on the body of the lock pin 11c. On the rear side portion of the mounting boss portion 110, a guide groove 112 is formed which includes a longitudinal groove 112a along the longitudinal direction of the lock pin 11c and a lateral groove 112b provided so as to be orthogonal to the lower end of the longitudinal groove 112a. The operating lever 11ca protrudes to the rear side of the mounting boss 110 while being inserted into the guide groove 112 so as to be capable of relative sliding contact.

  The lock release means 52 is configured by the lock pin 11c, the compression spring 11d, and the guide groove 112. 14 (a), 14 (b), and 14 (c), the operation lever 11ca is in the longitudinal groove 112a. Therefore, the lock pin 11c receives the urging elasticity of the compression spring 11d, and the lock pin 11c is attached to the mounting boss 110. It is maintained in a state protruding from the upper surface. Thus, as shown in FIG. 15, the lock pin 11c protruding from the upper portion of the mounting boss 110 is inserted into the through hole 19c formed in the movable side link member 19A, and is in a pin-coupled state with the movable side link member 19A. It is said. Therefore, the instrument holding member 11 is interlocked via the lock pin 11c and swings and swings around the axis of the bolt 11a by swinging the movable side link member 19A to the left and right. Then, as shown by an arrow a in FIG. 14 (c), when the operation lever 11ca is operated downward against the elasticity of the compression spring 11d and is received and locked in the lateral groove 112b, the lock pin 11c is attached to the mounting boss. It is immersed in the part 110, and pin coupling with the movable side link member 19A is released. Therefore, the instrument holding member 11 does not participate in the operation of the movable side link member 19A.

  15 (a) and 15 (b), the two instrument holding members 10 and 12 are also provided with connection release means 51 and 53 similar to the above, and the instrument holding member 10 performs the connection release means 51. The state where the pin connection with the movable side link member 19A is released is shown. The same mounting bosses 100 and 120 as above are formed on the upper portions of the instrument holding members 10 and 12, and lock pins 10 c and 12 c are directed upward by compression springs (not shown) on the mounting bosses 100 and 120. It is accommodated so as to protrude from the upper surface of the mounting boss portions 100 and 120 in the biased state. The lock pins 10c and 12c can be kept immersed in the mounting boss portions 100 and 120 by the operation along the guide grooves 102 and 122 of the operation levers 10ca and 12ca. , 53 are configured.

  15 (a) and 15 (b) show that the lock pin 10c of the instrument holding member 10 is immersed in the mounting boss portion 100 by the operation of the operation lever 10ca, and the instrument holding member 10 and the movable side link member are inserted. The state in which the pin connection with 19A is released is shown. Accordingly, the instrument holding member 10 is not in a state of being involved in the operation of the movable side link member 19A, and is maintained in a stationary state without being interlocked with this even when the movable side link member 19A swings left and right. As shown to (a), position shift arises with the lock pin 10c and the through-hole 19b. Further, the other instrument holding members 11 and 12 are pin-coupled to the movable side link member 19A through the through holes 19c and 19d of the movable side link member 19A with the lock pins 11c and 12c protruding. Accordingly, the instrument holding members 11 and 12 are swung in conjunction with the left and right swing of the movable side link member 19A. Then, by operating the operation lever 10ca, the lock pin 10c protrudes from the upper surface of the mounting boss portion 100 and is inserted into the through-hole 19b of the movable side link member 19A, whereby the instrument holding member 10 and the movable side link member 19A The pin coupling state is easily achieved. As described above, which of the instrument holding members 11 to 12 is set to the non-interlocking state is appropriately selected according to the medical treatment mode of the user and the type of instrument to be held. Further, the connection release means may be provided in all of the instrument holding members 9 to 13 or may be provided in at least one, and these are appropriately selected and set according to product specifications. Since other configurations are the same as those shown in FIG. 3, the same reference numerals are given to the common portions, and the description thereof is omitted. In FIGS. 15 (a) and 15 (b), some of the other coupling portions are not shown.

  In the above-described embodiment, the example in which the dental instrument holder according to the present invention includes five instrument holding members is shown, but the number of the instrument holding members is not limited to this. Absent. Further, the interlocking member 19 may be a combination of a rack and a pinion in addition to a parallel link mechanism as illustrated and a cable-like transmission member. Furthermore, the operation of the illustrated interlocking member 19 is performed manually, but may be performed by air driving means (for example, an air cylinder) or electric driving means. In this case, a sensor or the like is provided at an appropriate position of the dental medical unit A to detect the movement of the operator, and based on this detection information, the instrument holding member is configured to automatically swing and swing at the same time. Is also possible.

It is a conceptual whole perspective view which shows one Embodiment of the dental care unit of this invention. It is a top view of the dental care tray table of the present invention which constitutes the dental care unit. It is a top view including the interlocking mechanism part of the dental instrument holder of this invention assembled | attached to the dental treatment tray table. FIG. 4 is a cross-sectional view taken along the line XX in FIG. 3 showing a support structure for an instrument holding member. It is the figure seen from the Y line direction in FIG. It is a disassembled perspective view which shows another aspect of the support structure. (A) (b) (c) is a top view which shows the operation state of the parallel link mechanism part containing the differential mechanism in the dental instrument holder. (A) (b) is explanatory drawing which shows the example of the medical treatment aspect in the dental treatment unit. (A) (b) is a top view which shows the operation state of further another embodiment of the differential mechanism and parallel link mechanism part in a dental instrument holder. (A) (b) is a top view which shows the operation state of other embodiment of the parallel link mechanism part containing the differential mechanism in a dental instrument holder. It is a top view which shows other embodiment of a dental instrument holder. (A) and (b) show further another embodiment of a dental instrument holder, (a) is a top view and (b) is a front view. It is a disassembled perspective view which shows the support structure of the instrument holding member in embodiment of FIG. (A) (b) (c) is the perspective view seen from another angle which shows an example of the instrument holding member provided with the connection cancellation | release means, (b) (c) shows the state which partly notched ing. (A) and (b) show the use state of the connection release means, (a) is a perspective view of the mechanical part of the dental instrument holder as seen from the front side, and (b) is a perspective view as seen from the back side. The figure is shown. It is explanatory drawing which shows the example of the medical treatment aspect in the conventional dental medical unit.

1 Dental examination table 2 Dental treatment tray table (tray table)
4 Dental instrument holder (instrument holder)
40,401 Holder base 41,411 Fixed link member (holder base)
5-8 Instruments for dental care 9-13 Instrument holding members 9a-13a Bolt (support shaft)
19 Interlocking member 19A Movable side link member 190 Parallel link mechanism 19B Timing belt (corrugated transmission member)
20 Differential mechanism 21 Differential mechanism 22, 30 Mounting block (support member)
23, 27 Bracket (support member)
31-33 Bracket (support member)
34-36 Mounting piece (support member)
51-53 Connection release means A Dental treatment unit SH Swing swing perforation

Claims (9)

A dental instrument holder having a plurality of instrument holding members,
Each of the plurality of instrument holding member, relative to the holder base body, via a supporting shaft provided for each plurality of instrument holding member, and pivotally to each of the axis about a support shaft parallel Supported in a state and connected to each other via an interlocking member,
By the operation of the interlocking member, the plurality of instrument holding members are configured to be able to swing and swing all at once in the parallel direction of the instrument holding members with rotation around the respective axis. This is a dental instrument holder. The dental instrument holder according to claim 1,
A dental instrument holder, further comprising a non-interlocked instrument holding member not involved in the interlock member. The dental instrument holder according to claim 1,
A dental instrument holder, wherein a connection releasing means is interposed in at least one of the connecting portions of the plurality of instrument holding members to the interlocking member. The dental instrument holder according to any one of claims 1 to 3,
A differential mechanism is further connected to the interlocking member, and supported by the holder base via a support shaft so as to be rotatable about the axis of the support shaft, and an instrument holding connected to the differential mechanism. The instrument holding member connected to the differential mechanism swings differently from the other instrument holding members by the operation of the interlocking member. A dental instrument holder. The dental instrument holder according to any one of claims 1 to 4,
The instrument holding member is pivotally supported with respect to the holder base via a support member, and the instrument holding member is attached to the support member so as to be vertically tiltable. Dental instrument holder. The dental instrument holder according to any one of claims 1 to 5,
The dental instrument holder, wherein the interlocking member is a link member, and a parallel link mechanism is constituted by the holder base, the plurality of instrument holding members, and the link member. The dental instrument holder according to any one of claims 1 to 5,
The dental instrument is characterized in that the support shaft is fixed to the instrument holding member, and the interlocking member is constituted by an endless cable-shaped transmission member stretched around the support shaft. Mentor holder. A tray table for dental practice attached to the side of the dental examination table in a movable manner,
A dental instrument tray table, wherein the dental instrument holder according to any one of claims 1 to 7 is provided on one side of the tray table main body. A dental practice unit comprising a dental practice table, a dental practice tray table movably attached to a side of the dental practice table, and a plurality of dental practice instruments,
The dental treatment tray table includes the dental instrument holder according to any one of claims 1 to 7, and the dental treatment instrument is the instrument of the dental instrument holder. A dental care unit characterized in that it can be held in a removable manner with respect to a mentment holding member.

Images