JP5487072B2 - Micro-engine handpiece for dental treatment - Google Patents

Micro-engine handpiece for dental treatment Download PDF

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JP5487072B2
JP5487072B2 JP2010234463A JP2010234463A JP5487072B2 JP 5487072 B2 JP5487072 B2 JP 5487072B2 JP 2010234463 A JP2010234463 A JP 2010234463A JP 2010234463 A JP2010234463 A JP 2010234463A JP 5487072 B2 JP5487072 B2 JP 5487072B2
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screw
handpiece
grip portion
dental treatment
grip
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JP2012085784A (en
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貴之 中村
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株式会社長田中央研究所
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本発明は、歯科治療用マイクロエンジンハンドピース、より詳細には、マイクロエンジンハンドピースを構成するヘッド部とグリップ（把持）部とを連結する螺子がハンドピースの表面に現れないようにし、もって、ハンドピースの見栄えを良くした歯科治療用マイクロエンジンハンドピースに関する。   The present invention relates to a micro-engine handpiece for dental treatment, more specifically, a screw connecting a head portion and a grip (grip) portion constituting the micro-engine handpiece does not appear on the surface of the handpiece, The present invention relates to a micro-engine handpiece for dental treatment that improves the appearance of the handpiece.

図６は、従来の歯科治療用マイクロエンジンの一例を説明するための構成図で、周知のように、歯科治療用マイクロエンジンは、図６（Ａ）に示すハンドピース部１００と図６（Ｂ）に示す動力部（モータ部）２００から成り、これらが連結されて、図６（Ｃ）に示す歯科治療用マイクロエンジンを形成している。動力部２００側の回転軸２０１の回転が、連結部１５０を介してハンドピース１００側の回転軸１１３に伝達され、該回転軸１１３の回転が歯車１１４，１２３を介して回転軸１２１に伝達され、該回転軸１２１の回転が歯車１２４，１２５を介してヘッド部１２０の回転軸１２６に伝達される。回転筒１２６内には、周知のように、チャック機構が設けられており、該チャック機構により、回転筒１２６には歯科治療に用いる歯牙切削用のバー１６０が着脱自在に装着されるようになっている。
Figure 6 is a block diagram for explaining an example of a conventional dental microengine, as is well known, the micro-engine for dental treatment, the handpiece portion 100 and 6 shown in FIG. 6 (A) (B ) to consist power unit (motor unit) 200 shown, they are connected to form a micro-engine for dental treatment shown in FIG. 6 (C). The rotation of the rotating shaft 201 on the power unit 200 side is transmitted to the rotating shaft 113 on the handpiece 100 side via the connecting portion 150, and the rotation of the rotating shaft 113 is transmitted to the rotating shaft 121 via the gears 114 and 123. The rotation of the rotary shaft 121 is transmitted to the rotary shaft 126 of the head unit 120 through gears 124 and 125. As is well known, a chuck mechanism is provided in the rotary cylinder 126, and a tooth cutting bar 160 used for dental treatment is detachably attached to the rotary cylinder 126 by the chuck mechanism. ing.

上述のごとき歯科治療用マイクロエンジンハンドピースにおいては、ハンドピース部１００は、グリップ部１１０とヘッド部１２０が螺子１３０によって連結されており、この螺子１３０がハンドピース１００の表面に現れてしまい、外観上見栄えが悪く、また、この螺子部分に汚れが付着して不衛生であった。   In the micro-engine handpiece for dental treatment as described above, the handpiece portion 100 has the grip portion 110 and the head portion 120 connected to each other by the screw 130, and the screw 130 appears on the surface of the handpiece 100. The appearance was poor, and the screw part was soiled and unsanitary.

本発明は、上述のごとき実情に鑑みてなされたもので、ハンドピース１００のグリップ部１１０とヘッド部１２０とを連結する螺子をなくして、ハンドピースの表面に螺子頭が現れないようにするとともに、ヘッド部とグリップ部の連結をハンドピース（グリップ）部内で効果的に行えるようにすることを目的としてなされたものである。   The present invention has been made in view of the above circumstances, and eliminates the screw connecting the grip portion 110 and the head portion 120 of the handpiece 100 so that the screw head does not appear on the surface of the handpiece. The purpose of this invention is to enable the head part and the grip part to be effectively connected within the handpiece (grip) part.

上記課題を解決するために、本発明の請求項１の発明は、回転軸が挿通されているグリ
ップ部と、該グリップに連結され前記回転軸によって回転される回転筒を有し、該回転筒
に歯科治療用バーを着脱自在に装着可能としたヘッド部とから成り、該ヘッド部が、前記
回転軸を回転可能に挿通支持する回転軸支持筒を有し、該回転軸支持筒が前記ヘッド部か
ら延長し前記グリップ部に連結される連結筒内に固定されている歯科治療用ハンドピース
において、前記回転軸支持筒の外周に径方向に設けられた切り欠きと、一端が該切り欠きに係合し、他端が前記グリップ部に固定される連結部材と、該連結部材の前記他端を前記グリップ部内に設けられた径方向の壁面に固定する固定部材により、前記回転軸支持筒を前記グリップ部に連結、固定するようにしたことを特徴としたものである。
In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention includes a grip portion through which a rotating shaft is inserted, and a rotating cylinder connected to the grip and rotated by the rotating shaft. And a head portion that can be detachably attached to the dental treatment bar, the head portion having a rotation shaft support tube that rotatably inserts and supports the rotation shaft, and the rotation shaft support tube is the head. In a dental treatment handpiece extending from a portion and fixed in a connecting tube connected to the grip portion, a notch provided radially on the outer periphery of the rotating shaft support tube and one end of the notch The rotating shaft support cylinder is engaged by a connecting member that engages and has the other end fixed to the grip portion, and a fixing member that fixes the other end of the connecting member to a radial wall surface provided in the grip portion. Connect and fix to the grip Is obtained is characterized in that so.

請求項２の発明は、請求項１の発明において、前記連結部材の他端は、外周部に雄螺子を有するリング状部材であり、前記固定部材は、内周部に前記雄螺子に螺合する雌螺子を有するリング状部材であり、該雌螺子を前記雄螺子に螺合して回転し、該雌螺子を有するリング状部材を前記グリップ部内に設けられた前記径方向の壁面に当接させるようにしたことを特徴としたものである。
According to a second aspect of the present invention, in the first aspect of the invention, the other end of the connecting member is a ring-shaped member having a male screw on an outer peripheral portion, and the fixing member is screwed to the male screw on an inner peripheral portion. A ring-shaped member having a female screw that rotates with the female screw engaged with the male screw, and abuts the ring-shaped member having the female screw against the radial wall surface provided in the grip portion. This is characterized by the fact that the

請求項３の発明は、請求項１の発明において、前記連結部材の他端は、軸方向に螺子孔を有するリング状部材であり、前記固定部材は前記螺子孔に螺合する螺子であり、該螺子を回転して該螺子の先端を前記グリップ部内に設けられた前記径方向の壁面に当接させるようにしたことを特徴としたものである。
The invention of claim 3 is the invention of claim 1 , wherein the other end of the connecting member is a ring-shaped member having a screw hole in the axial direction, and the fixing member is a screw screwed into the screw hole, The screw is rotated so that the tip of the screw is brought into contact with the radial wall surface provided in the grip portion.

本発明によると、ヘッド部とハンドピース部との連結をハンドピース内部で行うようにしたので、従来技術のように、ハンドピース表面に、これらを連結するための螺子の頭部が現れるようなことがなく、ハンドピースの見栄えをよくすることができ、しかも、ヘッド部とハンドピース部との連結をハンドピース内で効果的に行うことができる。   According to the present invention, since the connection between the head part and the hand piece part is performed inside the hand piece, a screw head for connecting them appears on the surface of the hand piece as in the prior art. Therefore, the appearance of the handpiece can be improved, and the connection between the head portion and the handpiece portion can be effectively performed within the handpiece.

本発明による歯科治療用マイクロエンジンハンドピースの一実施例を説明するための要部概略構成図である。It is a principal part schematic block diagram for demonstrating one Example of the micro engine handpiece for dental treatment by this invention. ヘッド部をグリップ部に連結，固定する連結，固定具を説明するための外観斜視図である。It is an external appearance perspective view for demonstrating the connection and fixing tool which connect and fix a head part to a grip part. 図２に示した連結，固定具によりヘッド部をグリップ部に連結，固定する手順を示す図である。It is a figure which shows the procedure which connects and fixes a head part to a grip part by the connection and fixing tool shown in FIG. 連結，固定具の他の例を示す外観斜視図である。It is an external appearance perspective view which shows the other example of a connection and a fixing tool. 図４に示した連結，固定具によりヘッド部をグリップ部に連結，固定する手順を示す図である。It is a figure which shows the procedure which connects and fixes a head part to a grip part by the connection and fixing tool shown in FIG. 従来の歯科治療用マイクロエンジンハンドピースの一例を説明するための概略構成図である。It is a schematic block diagram for demonstrating an example of the conventional microengine handpiece for dental treatment.

図１は、本発明による歯科治療用マイクロエンジンハンドピース１００の一実施例を説明するための要部概略構成図で、図中、図６に示した従来技術と同様の作用をする部分には図６と同一の参照番号が付してある。而して、本発明における歯科治療用マイクロエンジンハンドピース１００においては、図６に示した連結螺子１３０は使用せず、回転軸支持筒１２２をヘッド部１２０の連結筒１２０ｂにねじ１４０その他によって直接固定している。しかし、このままでは、ヘッド部１２０とグリップ部１１０とを連結できないので、図１に示した実施例においては、連結部材１（１ａ，１ｂ，１ｃ）と固定部材２によって、ヘッド部１２０とグリップ部１１０を連結し、固定している。   FIG. 1 is a schematic configuration diagram of an essential part for explaining an embodiment of a micro-engine handpiece 100 for dental treatment according to the present invention. In FIG. The same reference numerals as those in FIG. 6 are attached. Accordingly, in the micro-engine handpiece 100 for dental treatment according to the present invention, the connecting screw 130 shown in FIG. 6 is not used, and the rotary shaft support tube 122 is directly attached to the connecting tube 120b of the head portion 120 by the screw 140 or the like. It is fixed. However, since the head portion 120 and the grip portion 110 cannot be connected as they are, the head portion 120 and the grip portion are connected by the connecting member 1 (1a, 1b, 1c) and the fixing member 2 in the embodiment shown in FIG. 110 is connected and fixed.

図２は、図１に示した連結部材１及び固定部材２の詳細を説明するための分解図で、本発明においては、図２（Ａ）に示すように、ヘッド部１２０の回転軸支持筒１２２の外周には、径方向の切り欠き１２２ａが設けられており、この切り欠き１２２ａに、図２（Ｂ）に示す連結部材１の先端部に設けられた係合部１ａが引っ掛けられるようになっている。連結部材１の他端には、連結アーム１ｂを介して円環状のリング部材１ｃを有し、該リング部材１ｃの外周には雄螺子１ｃ’が設けられている。固定部材２は、図２（Ｃ）に示すように、内周面に前記リング部材１ｃの雄螺子１ｃ’に螺合する雌螺子２ａを有する円環状のリング部材である。   FIG. 2 is an exploded view for explaining the details of the connecting member 1 and the fixing member 2 shown in FIG. 1. In the present invention, as shown in FIG. A notch 122a in the radial direction is provided on the outer periphery of 122, and the engaging portion 1a provided at the distal end portion of the connecting member 1 shown in FIG. 2B is hooked on the notch 122a. It has become. The other end of the connecting member 1 has an annular ring member 1c via a connecting arm 1b, and a male screw 1c 'is provided on the outer periphery of the ring member 1c. As shown in FIG. 2C, the fixing member 2 is an annular ring member having a female screw 2a that is screwed into the male screw 1c 'of the ring member 1c on the inner peripheral surface.

図２に示した連結部材１は、図３（Ａ）に示すように、矢印Ａ方向よりグリップ部１１０内の先端まで押し込まれ、この状態で、ヘッド部１２０の回転支持筒１２２が、矢印Ｂ方向より該グリップ部１１０内に挿入されると、該回転軸支持筒１２２の切り欠き部１２２ａが連結部材１の係合部１ａと係合可能状態となる。グリップ部１１０内には、該連結部材１の雄螺子１ｃ’に螺合された固定用リング部材２も一体的に挿入され、或いは、前記連結部材１の挿入に続いて固定部材２が挿入される。   As shown in FIG. 3A, the connecting member 1 shown in FIG. 2 is pushed from the direction of arrow A to the tip in the grip part 110, and in this state, the rotation support cylinder 122 of the head part 120 is moved to the arrow B. When inserted into the grip part 110 from the direction, the notch part 122a of the rotating shaft support cylinder 122 becomes engageable with the engaging part 1a of the connecting member 1. A fixing ring member 2 screwed into the male screw 1c ′ of the connecting member 1 is also integrally inserted into the grip 110, or the fixing member 2 is inserted following the insertion of the connecting member 1. The

従って、固定部材２を挿入した後に、該固定部材２をドライバー等を用いて回転すると、雄螺子１ｃ’と雌螺子２ａとの螺合により、固定部材２が前進し、該固定部材２の先端がグリップ部１１０の内壁に設けられた壁面１１０ａに当接すると（図３（Ｂ））、それ以降、固定部材２を回転することにより、連結部材１は矢印方向に引かれ、係合部１ａが回転軸支持筒１２２の切り欠き部１２２ａに当接し、更に、固定部材２を回転すると、ヘッド部１２０が更に矢印方向に引かれ、該ヘッド部１２０がグリップ部１１０に堅固に連結、固定される。   Therefore, after the fixing member 2 is inserted, when the fixing member 2 is rotated using a screwdriver or the like, the fixing member 2 advances by the screwing of the male screw 1c ′ and the female screw 2a, and the tip of the fixing member 2 is moved forward. Is in contact with the wall surface 110a provided on the inner wall of the grip portion 110 (FIG. 3B), the connecting member 1 is subsequently pulled in the direction of the arrow by rotating the fixing member 2, and the engaging portion 1a. Comes into contact with the notch portion 122a of the rotating shaft support tube 122 and further rotates the fixing member 2, the head portion 120 is further pulled in the direction of the arrow, and the head portion 120 is firmly connected and fixed to the grip portion 110. The

図４は、本発明の他の実施例を説明するための図で、図中、５は連結部材、６は固定部材（螺子）で、連結部材５は、図２に示した連結部材１に対応した機能を有し、固定部材（螺子）６は、図２に示した固定部材２に対応した作用をする。   FIG. 4 is a view for explaining another embodiment of the present invention, in which 5 is a connecting member, 6 is a fixing member (screw), and the connecting member 5 is connected to the connecting member 1 shown in FIG. The fixing member (screw) 6 has a corresponding function, and acts corresponding to the fixing member 2 shown in FIG.

図５は、図４に示した連結部材５及び固定部材６を用いて、ヘッド部１２０とグリップ部１１０とを連結する作業手順を説明するための図で、まず、図５（Ａ）に示すように、グリップ部１１０内に、連結部材５に固定部材（螺子）６を螺合した状態で矢印Ａ方向より挿入し、次いで、先端部より矢印Ｂ方向にヘッド部１２０を挿入する（図５（Ｂ））。その後、固定部材（螺子）６を回転すると、該螺子６の先端が、グリップ部１１０内に径方向に設けられた前記壁面１１０ａに当接し、更に、回転し続けると、連結部材５が矢印方向に移動し、連結部材５の係合部５ａがヘッド部１２０内に設けられた回転軸支持筒１２２の切り欠き部１２２ａに係合し、ヘッド部１２０を矢印方向に引き込み、ヘッド部１２０がそれ以上引き込まれなくなった状態で、ヘッド部１２０はグリップ部１１０に堅固に連結される。   FIG. 5 is a diagram for explaining an operation procedure for connecting the head portion 120 and the grip portion 110 using the connecting member 5 and the fixing member 6 shown in FIG. 4. First, FIG. In this way, the grip member 110 is inserted in the direction of arrow A with the fixing member (screw) 6 screwed to the connecting member 5, and then the head portion 120 is inserted in the direction of arrow B from the tip (FIG. 5). (B)). Thereafter, when the fixing member (screw) 6 is rotated, the tip of the screw 6 comes into contact with the wall surface 110a provided in the grip portion 110 in the radial direction, and further continues to rotate, the connecting member 5 moves in the direction of the arrow. The engaging portion 5a of the connecting member 5 engages with the notch portion 122a of the rotary shaft support tube 122 provided in the head portion 120, and the head portion 120 is pulled in the direction of the arrow, and the head portion 120 The head portion 120 is firmly connected to the grip portion 110 in a state where it is no longer drawn.

上述のように、本発明によると、歯科治療用マイクロエンジンハンドピースにおいて、ヘッド部とグリップ部との連結をハンドピース内で行うようにしたので、従来技術のように、ハンドピース表面に、これらヘッド部とグリップ部とを連結する螺子頭が現れるようなことはなく、ハンドピースの外観上の見栄をよくし、更には、ハンドピース表面を清潔に保つことができる。   As described above, according to the present invention, in the micro-engine handpiece for dental treatment, the connection between the head portion and the grip portion is performed within the handpiece. The screw head that connects the head portion and the grip portion does not appear, so that the appearance of the handpiece can be improved and the surface of the handpiece can be kept clean.

１…連結部材、２…固定部材、５…連結部材、６…固定部材、１００…ハンドピース。 DESCRIPTION OF SYMBOLS 1 ... Connecting member, 2 ... Fixed member, 5 ... Connecting member, 6 ... Fixed member, 100 ... Handpiece.

Claims (3)

回転軸が挿通されているグリップ部と、該グリップに連結され前記回転軸によって回転される回転筒を有し、該回転筒に歯科治療用バーを着脱自在に装着可能としたヘッド部とから成り、該ヘッド部が、前記回転軸を回転可能に挿通支持する回転軸支持筒を有し、該回転軸支持筒が前記ヘッド部から延長し前記グリップ部に連結される連結筒内に固定されている歯科治療用ハンドピースにおいて、前記ヘッド部の前記回転軸支持筒を前記グリップ部先端部に挿入し、該グリップ部内において、前記回転軸支持筒の外周に径方向に設けられた切り欠きと、一端が該切り欠きに係合し、他端が前記グリップ部に固定される連結部材と、該連結部材の前記他端を前記グリップ部内に設けられた径方向の壁面に固定する固定部材により、前記回転軸支持筒を前記グリップ部に連結、固定するようにしたことを特徴とする歯科治療用マイクロエンジンハンドピース。 A grip portion through which a rotation shaft is inserted, and a head portion that is connected to the grip and is rotated by the rotation shaft, and a head portion on which a dental treatment bar can be detachably attached. The head portion has a rotation shaft support tube that rotatably inserts and supports the rotation shaft, and the rotation shaft support tube extends from the head portion and is fixed in a connecting tube connected to the grip portion. In the dental treatment handpiece, the rotary shaft support tube of the head portion is inserted into the grip portion tip, and a notch provided radially in the outer periphery of the rotary shaft support tube in the grip portion ; A connecting member having one end engaged with the notch and the other end fixed to the grip portion, and a fixing member fixing the other end of the connecting member to a radial wall surface provided in the grip portion; The rotating shaft support Connecting a tubular to said grip portion, dental microengine handpiece which is characterized in that so as to fix. 前記連結部材の他端は、外周部に雄螺子を有するリング状部材であり、前記固定部材は、内周部に前記雄螺子に螺合する雌螺子を有するリング状部材であり、該雌螺子を前記雄螺子に螺合して回転し、該雌螺子を有するリング状部材を前記グリップ部内に設けられた前記径方向の壁面に当接させるようにしたことを特徴とする請求項１に記載の歯科治療用マイクロエンジンハンドピース。 The other end of the connecting member is a ring-shaped member having a male screw on the outer peripheral portion, and the fixing member is a ring-shaped member having a female screw that engages with the male screw on the inner peripheral portion. the rotating said screwed to the male screw according to claim 1, characterized in that the ring-shaped member having a female screw was set to abut on the radial wall provided in the grip portion Micro-engine handpiece for dental treatment. 前記連結部材の他端は、軸方向に螺子孔を有するリング状部材であり、前記固定部材は前記螺子孔に螺合する螺子であり、該螺子を回転して該螺子の先端を前記グリップ部内に設けられた前記径方向の壁面に当接させるようにしたことを特徴とする請求項１に記載の歯科治療用マイクロエンジンハンドピース。
The other end of the connecting member is a ring-shaped member having a screw hole in the axial direction, and the fixing member is a screw that is screwed into the screw hole, and the tip of the screw is moved inside the grip portion by rotating the screw. 2. The micro-engine handpiece for dental treatment according to claim 1 , wherein the micro-engine handpiece for dental treatment is brought into contact with the radial wall surface provided on the dental treatment.
JP2010234463A 2010-10-19 2010-10-19 Micro-engine handpiece for dental treatment Expired - Fee Related JP5487072B2 (en)

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JPS5746969Y2 (en) * 1978-04-28 1982-10-15
JPS6099909U (en) * 1983-12-13 1985-07-08 長田電機工業株式会社 dental handpiece
JPH0228893Y2 (en) * 1984-09-12 1990-08-02
JPS63315043A (en) * 1987-06-19 1988-12-22 Nakanishi Shika Kikai Seisakusho:Kk Dental handpiece
JPH065772Y2 (en) * 1988-05-23 1994-02-16 株式会社長田中央研究所 Fixing mechanism of head in dental instrument
DE50006806D1 (en) * 1999-09-27 2004-07-22 W & H Dentalwerk Buermoos Ges Dental or surgical contra-angle

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