JP2007252832A - Opthalmological apparatus - Google Patents

Opthalmological apparatus Download PDF

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JP2007252832A
JP2007252832A JP2006084266A JP2006084266A JP2007252832A JP 2007252832 A JP2007252832 A JP 2007252832A JP 2006084266 A JP2006084266 A JP 2006084266A JP 2006084266 A JP2006084266 A JP 2006084266A JP 2007252832 A JP2007252832 A JP 2007252832A
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screw
base
lock shaft
screw part
movable table
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JP4841283B2 (en
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Kazuhiro Yoshimura
一裕 芳村
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Nidek Co Ltd
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Nidek Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To fix a movable table to a base stand by a simple operation. <P>SOLUTION: The opthalmological apparatus comprises the movable table on which an optical system housing part for examination, etc. is mounted and which can be moved on the base stand, and a fixing mechanism for fixing the movable table to the base stand. The opthalmological apparatus also has a locking shaft with a first screw part at the upper end, a second screw part on the lower side and a flange for pressing the upper wall of the base stand on the movable table side, a rotating member for rotating the locking shaft around the axis, a first screw-engaging screw part to be screw-engaged with the first screw part on the movable table side, and a second screw-engaging screw part to be screw-engaged with the second screw part. The second screw-engaging screw part is disposed on the base stand side at a position where the screw-engagement with the second screw part is released when the movable table is fixed. The locking shaft is fed out to the movable table side by the second screw-engaging screw part by the rotating operation, the first screw part is screw-engaged with the first screw-engaging screw part before the disengagement of the second screw part, and the upper wall of the base stand is pressed to the movable table side by the flange. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、患者眼の検査等を行う眼科装置に関する。   The present invention relates to an ophthalmologic apparatus for examining a patient's eye.

眼科装置には、眼の検査や治療を行うスリットランプ、患者眼の屈折力を他覚的に測定する他覚眼屈折力測定装置や、眼底を撮影する眼底カメラなど様々な装置がある。患者眼のアライメントを行うために、これらの装置には検査、観察、測定等を行うための光学系が収められた光学系収納部(移動台)を基台上で水平方向に移動できるように水平移動機構が設けられている。そして、装置を使用しないとき、装置を移動するとき、検眼車に装置を搭載して移動するとき等には、光学系収納部が移動しないように光学系収納部を基台に固定する固定機構が設けられている(例えば、特許文献1参照)。
特開2001−46337号公報
There are various types of ophthalmologic apparatuses such as a slit lamp that performs eye examination and treatment, an objective eye refractive power measurement apparatus that objectively measures the refractive power of a patient's eye, and a fundus camera that photographs the fundus. In order to align the patient's eyes, these devices can move the optical system storage unit (moving table) containing the optical system for inspection, observation, measurement, etc. in the horizontal direction on the base. A horizontal movement mechanism is provided. When the device is not used, when the device is moved, or when the device is mounted on the optometer, the fixing mechanism that fixes the optical system storage unit to the base so that the optical system storage unit does not move. (For example, refer to Patent Document 1).
JP 2001-46337 A

しかしながら、特許文献1のような固定機構では、基台下部にネジ式の回転ノブが取り付けられ、光学系収納部には回転ノブのネジ部と螺合する部材が設けられており、光学系収納部を固定する場合には、回転ノブを上方に押し上げながら回す必要があり、押し上げと回転の2つの操作が伴うために、固定が上手くできない問題があった。   However, in the fixing mechanism as in Patent Document 1, a screw-type rotary knob is attached to the lower part of the base, and the optical system storage part is provided with a member that is screwed with the screw part of the rotary knob. In the case of fixing the part, it is necessary to rotate the rotary knob while pushing it up, and there are two operations, ie, pushing up and rotating.

本発明は、上記従来技術の問題点に鑑み、簡単な操作で移動台を基台に対して固定できる眼科装置を提供することを技術課題とする。   An object of the present invention is to provide an ophthalmologic apparatus capable of fixing a movable table to a base with a simple operation in view of the problems of the conventional technology.

上記課題を解決するために、本発明は以下のような構成を備えることを特徴とする。
(1) 被検眼の検査等を行うための光学系収納部が搭載され、基台上を水平方向に移動可能な移動台と、前記基台に対して前記移動台を固定するための固定機構と、を備える眼科装置において、前記固定機構は、
前記基台の上部壁に形成された開口を通して前記移動台との間で上下移動可能に配置されたロック軸であって、上端に形成された第1ネジ部と該第1ネジ部より下側に形成された第2ネジ部とを有し、且つ前記基台の上部壁を前記移動台側に押さえ付けるフランジを持つロック軸と、
該ロック軸をその軸回りに回転させる回転部材と、
前記移動台側に配置され、前記第1ネジ部に螺合する第1螺合ネジ部と、
前記第2ネジ部に螺合する第2螺合ネジ部であって、固定時に前記第2ネジ部との螺合が外れる位置で前記基台側に配置された第2螺合ネジ部と、を備え、
前記回転部材の回転操作により、前記第2螺合ネジ部に螺合した前記第2ネジ部によってロック軸が移動台側に送り出され、前記第2螺合ネジ部から第2ネジ部が外れる前に前記第1螺合ネジ部に前記第1ネジ部が螺合し、前記フランジが前記基台の上部壁を移動台側に押さえ付ける構成としたことを特徴とする。
(2) 被検眼の検査等を行うための光学系収納部が搭載され、基台上を水平方向に移動可能な移動台と、前記基台に対して前記移動台を固定するための固定機構と、を備える眼科装置において、前記固定機構は、
前記基台の上部壁に形成された開口を通して前記移動台との間で上下移動可能に配置されたロック軸であって、上端に形成された嵌合部と該嵌合部より下側に形成されたネジ部とを有するロック軸と、
該ロック軸をその軸回りに回転させる回転部材と、
前記移動台側に配置され、前記嵌合に嵌め合わされる嵌合受け部と、
前記ネジ部に螺合する螺合ネジ部と、を備え、
前記回転部材の回転操作により、前記螺合ネジ部に螺合した前記ネジ部によってロック軸が移動台側に送り出され、ロック軸の前記嵌合部が移動台側の前記嵌合受け部に嵌合される構成としたことを特徴とする。
In order to solve the above problems, the present invention is characterized by having the following configuration.
(1) An optical system storage unit for inspecting an eye to be examined and the like, a movable table that can move in the horizontal direction on the base, and a fixing mechanism for fixing the movable table to the base An ophthalmologic apparatus comprising:
A lock shaft arranged to be movable up and down through an opening formed in an upper wall of the base, and a first screw part formed at an upper end and a lower side than the first screw part And a lock shaft having a flange that presses the upper wall of the base against the movable base,
A rotating member for rotating the lock shaft around the shaft;
A first threaded screw portion disposed on the movable table side and threadedly engaged with the first threaded portion;
A second screwing screw part screwed into the second screw part, the second screwing screw part arranged on the base side at a position where the screwing with the second screw part is released when fixed; With
By rotating the rotary member, the lock shaft is sent out to the moving base by the second screw portion screwed to the second screw portion, and before the second screw portion is detached from the second screw portion. The first screw part is screwed to the first screw part, and the flange presses the upper wall of the base to the moving base side.
(2) An optical system storage unit for inspecting an eye to be examined and the like, a moving table that can move horizontally on the base, and a fixing mechanism for fixing the moving base to the base An ophthalmologic apparatus comprising:
A lock shaft that is arranged to be movable up and down through the opening formed in the upper wall of the base and is formed below the fitting portion and a fitting portion formed at the upper end. A lock shaft having a threaded portion;
A rotating member for rotating the lock shaft around the shaft;
A fitting receiving portion disposed on the movable table side and fitted into the fitting;
A screwing screw part screwed into the screw part,
By the rotation operation of the rotating member, the lock shaft is sent out to the moving table side by the screw portion screwed to the screwing screw portion, and the fitting portion of the lock shaft is fitted into the fitting receiving portion on the moving table side. It is the structure which was united.

本発明によれば、簡単な操作で光学系収納部を持つ移動台を基台に対して固定できる。   According to the present invention, it is possible to fix the movable table having the optical system storage unit with respect to the base by a simple operation.

以下、本発明の実施の形態を図面に基づいて説明する。図1は本発明の実施の形態の眼科装置の模式的側部断面図である。1は他覚眼屈折力測定装置や眼底カメラ等の患者眼の検査、観察、測定等を行う光学器械の光学系が収められた光学系収納部である。2はジョイスティックで、その下端には鋼球2aが固着されている。4は光学系収納部1を搭載した移動台であり、内部には水平方向に移動させる水平移動機構部3及び光学系収納部1を上下方向に移動させる上下移動機構部61が組み込まれている。移動台4は、基台5上を水平方向に移動可能に搭載され、ジョイスティック2の水平方向の操作により移動される。また、ノブ2bを回転操作すると、上下移動機構部61によって光学系収納部1が上下方向に移動される。基台5の内部には、水平移動機構部3の水平シャフト6、案内管7、鋼球8、ラック9が配置されている。鋼球8が転がることにより移動台4が移動するが、案内管7の部分にベアリングを組み合わせて配置してもよい。基台5の被検者側には患者の顔を固定するための顔支持ユニット62が固定されている。基台5及び移動台4の検者側には、基台5に対して移動台4を固定するための固定機構10が配置されている。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic sectional side view of an ophthalmologic apparatus according to an embodiment of the present invention. Reference numeral 1 denotes an optical system storage unit that stores an optical system of an optical instrument that performs examination, observation, measurement, and the like of a patient's eye such as an objective eye refractive power measurement device and a fundus camera. A joystick 2 has a steel ball 2a fixed to the lower end thereof. Reference numeral 4 denotes a moving table on which the optical system storage unit 1 is mounted, and a horizontal movement mechanism unit 3 that moves in the horizontal direction and a vertical movement mechanism unit 61 that moves the optical system storage unit 1 in the vertical direction are incorporated therein. . The movable table 4 is mounted on the base 5 so as to be movable in the horizontal direction, and is moved by operating the joystick 2 in the horizontal direction. When the knob 2b is rotated, the optical system storage unit 1 is moved in the vertical direction by the vertical movement mechanism unit 61. Inside the base 5, a horizontal shaft 6, a guide tube 7, a steel ball 8, and a rack 9 of the horizontal movement mechanism unit 3 are arranged. Although the moving table 4 moves when the steel ball 8 rolls, a bearing may be combined with the portion of the guide tube 7. A face support unit 62 for fixing the patient's face is fixed to the subject side of the base 5. A fixing mechanism 10 for fixing the moving table 4 to the base 5 is arranged on the examiner side of the base 5 and the moving table 4.

固定機構10の構成を、図2、3を基に説明する。図2は、固定機構10を説明するための側方から見た断面図であり、図2(a)は、基台5に対する移動台4の固定が解除されている状態の図であり、図2(b)は基台5に対して移動台4が固定された状態の図である。   The configuration of the fixing mechanism 10 will be described with reference to FIGS. FIG. 2 is a cross-sectional view seen from the side for explaining the fixing mechanism 10, and FIG. 2A is a diagram showing a state in which the fixing of the movable table 4 to the base 5 is released. FIG. 2B is a diagram showing a state in which the movable table 4 is fixed with respect to the base 5.

基台5の上部壁5aには開口40が形成され、その開口を通ってロック軸11が基台5と移動台4との間で上下移動可能に配置されている。ロック軸11の上端には第1のネジ部12が形成され、移動台4側にはネジ部12に螺合する螺合ネジ部としてのナット部52が固定部材51にて固定されている。一方、ネジ部12より下に位置するロック軸11の下端には第2のネジ部13が形成されている。基台5の内部には、ネジ部13に螺合する螺合ネジ部としてのナット部43が固定されている。詳細な図示は略したが、ネジ部12、13及びナット部43,52には互いに嵌め合うネジ山が形成されている。ネジ部12とネジ部13との位置関係は、ロック軸11の回転により、ネジ部13がナット部43から外れ、ネジ部12がナット部52に噛み合う関係とされている。ネジ部12の上端、13の下端にはそれぞれ面取り加工が施され、ナット部52,43への螺合がし易くなっている。   An opening 40 is formed in the upper wall 5 a of the base 5, and the lock shaft 11 is disposed so as to be movable up and down between the base 5 and the moving base 4 through the opening. A first screw portion 12 is formed at the upper end of the lock shaft 11, and a nut portion 52 as a screwing screw portion that is screwed to the screw portion 12 is fixed to the movable table 4 side by a fixing member 51. On the other hand, a second screw portion 13 is formed at the lower end of the lock shaft 11 located below the screw portion 12. Inside the base 5, a nut portion 43 as a screwing screw portion that is screwed into the screw portion 13 is fixed. Although detailed illustration is omitted, the screw portions 12 and 13 and the nut portions 43 and 52 are formed with screw threads that fit with each other. The positional relationship between the screw portion 12 and the screw portion 13 is such that the screw portion 13 is detached from the nut portion 43 and the screw portion 12 is engaged with the nut portion 52 by the rotation of the lock shaft 11. The upper end of the screw portion 12 and the lower end of the screw portion 13 are chamfered so that the nut portions 52 and 43 can be easily screwed together.

基台5には、ロック軸11を回転させるための操作部材としての回転ノブ20が、ロック軸11の軸回りに回転可能に配置されている。回転ノブ20は、胴体部21と胴体部21の下に形成された鍔部22とを持つハット状の形状である。鍔22の縁部は、基台5の検者側の壁5bに形成された開口部42から突出するように配置されている。回転ノブ20の内部は中空に形成されている。ロック軸11の中心付近にはフランジ14が一体的に形成され、フランジ14は回転ノブ20の内部は中空に位置するように配置されている。   A rotation knob 20 as an operation member for rotating the lock shaft 11 is disposed on the base 5 so as to be rotatable around the axis of the lock shaft 11. The rotary knob 20 has a hat shape having a body part 21 and a flange part 22 formed below the body part 21. The edge of the ridge 22 is disposed so as to protrude from the opening 42 formed in the wall 5 b on the examiner side of the base 5. The inside of the rotary knob 20 is formed hollow. A flange 14 is integrally formed in the vicinity of the center of the lock shaft 11, and the flange 14 is disposed so that the inside of the rotary knob 20 is positioned hollow.

フランジ14の上面14aは、ナット部52に第1ネジ部12を噛み合わせてロック軸11を締め付けるときに、その締め付けで回転ノブ20が持つ胴体部21の上部を介して基台5の上部壁5aを移動台4側に押え付けるストッパ面となる。   When the lock shaft 11 is tightened by engaging the first screw portion 12 with the nut portion 52, the upper surface 14a of the flange 14 is connected to the upper wall of the base 5 via the upper portion of the body portion 21 of the rotary knob 20 by the tightening. It becomes a stopper surface which presses 5a to the movable stand 4 side.

図3は、回転ノブ20の回転操作によりロック軸11を回転させる回転伝達機構を説明する図であり、図3(a)は、回転ノブ20及びロック軸11を下方向から見た斜視図である。図3(b)はロック軸11と回転ノブ20が組み合せられた状態を示す図である。   FIG. 3 is a diagram for explaining a rotation transmission mechanism that rotates the lock shaft 11 by rotating the rotary knob 20. FIG. 3A is a perspective view of the rotary knob 20 and the lock shaft 11 as viewed from below. is there. FIG. 3B is a view showing a state in which the lock shaft 11 and the rotary knob 20 are combined.

回転ノブ20の胴体部21の上部には、ロック軸11を通す穴23が開けられている。フランジ14には、ピン30を係合させるための略半円状の切り欠き15が2箇所に形成されている。一方、回転ノブ20の胴体部21の内側壁にも、切り欠き15に対応し、ピン30に係合する略半円状の窪み25が2箇所に形成されている。胴体部21の上部にはピン30の先端30aを通すピン穴24が形成されている。組み付け時には、ロック軸11を穴23に収め、2箇所の切り欠き15と窪み25とにより形成される穴部にピン30を通す。このような構成により、回転ノブ20を回転させると、その回転は窪み25、ピン30及び切り欠き15を介してロック軸11に伝達される。また、ロック軸11はピン30にガイドされて、回転ノブ20の胴体部21の内部で上下方向に自由にスライドすることができる。   A hole 23 through which the lock shaft 11 is passed is formed in the upper portion of the body portion 21 of the rotary knob 20. The flange 14 is formed with two substantially semicircular cutouts 15 for engaging the pin 30 at two locations. On the other hand, two substantially semicircular recesses 25 corresponding to the notches 15 and engaging with the pins 30 are also formed in the inner wall of the body portion 21 of the rotary knob 20. A pin hole 24 through which the tip 30 a of the pin 30 passes is formed in the upper portion of the body portion 21. At the time of assembly, the lock shaft 11 is stored in the hole 23, and the pin 30 is passed through the hole formed by the two notches 15 and the recess 25. With this configuration, when the rotary knob 20 is rotated, the rotation is transmitted to the lock shaft 11 via the recess 25, the pin 30 and the notch 15. The lock shaft 11 is guided by the pin 30 and can slide freely in the vertical direction inside the body portion 21 of the rotary knob 20.

なお、以上の説明では、窪み25を胴体部21の内側壁に形成したが、これに限るものではない。フランジ14が胴体部21、ピン30から伝達される回転力を受ける構成ならばよい。フランジ14の切り欠き15を大きめに形成し、窪み25を胴体部21に形成せずに、フランジ14をピン30にて胴体部21に固定する構成としてもよい。   In addition, in the above description, although the hollow 25 was formed in the inner side wall of the trunk | drum 21, it is not restricted to this. The flange 14 may be configured to receive the rotational force transmitted from the body portion 21 and the pin 30. The notch 15 of the flange 14 may be formed larger, and the flange 14 may be fixed to the body portion 21 with the pin 30 without forming the recess 25 in the body portion 21.

次に、上記のような固定機構10による基台5に対する移動台4の固定を説明する。回転ノブ20を右回転させると、ピン30等による回転伝達機構によりロック軸11が回転され、ナット部43と第2ネジ部13とによりロック軸11が上側(移動台4側)に送り出される。すなわち、回転ノブ20の高さ位置を変えることなく、その回転操作のみで、ロック軸11を上側に送り出すことができる。ロック軸11を数回転させると、ネジ部13がナット部43から外れるようになるが、ネジ部13がナット部43から外れる前に(又はネジ部13がナット部43から外れた後の1回転の間に)、ロック軸11の上部のネジ部12が移動台4に設けられたナット部52に螺合され、ロック軸11が移動台4側に引き込まれる(上側へ送られる)。さらに、回転ノブ20を回転させると、図2(b)に示すように、フランジ14の上面14aが回転ノブ20の胴体部21上部に当接し、基台5の上部壁5aを押さえつけるようになり、基台5に対する移動台4の水平移動及び上下移動が固定される。なお、フランジ14の上面14aが基台5の上部壁5aを直接押さえつける構造でも良い。   Next, the fixing of the movable table 4 to the base 5 by the fixing mechanism 10 as described above will be described. When the rotary knob 20 is rotated to the right, the lock shaft 11 is rotated by the rotation transmission mechanism using the pin 30 or the like, and the lock shaft 11 is sent to the upper side (moving table 4 side) by the nut portion 43 and the second screw portion 13. That is, without changing the height position of the rotary knob 20, the lock shaft 11 can be sent upward only by the rotation operation. When the lock shaft 11 is rotated several times, the screw part 13 comes off from the nut part 43, but before the screw part 13 comes off from the nut part 43 (or one rotation after the screw part 13 comes off from the nut part 43). In the meantime, the screw portion 12 at the upper part of the lock shaft 11 is screwed into the nut portion 52 provided on the movable table 4, and the lock shaft 11 is pulled toward the movable table 4 (sent upward). Further, when the rotary knob 20 is rotated, as shown in FIG. 2B, the upper surface 14a of the flange 14 comes into contact with the upper portion of the body portion 21 of the rotary knob 20, and the upper wall 5a of the base 5 is pressed down. The horizontal movement and the vertical movement of the movable table 4 with respect to the base 5 are fixed. Note that the upper surface 14 a of the flange 14 may directly press the upper wall 5 a of the base 5.

移動台4の固定を解除するときは、回転ノブ20を先程の方向と逆方向(左方向)に回転させることで、ネジ部12とナット部52で逆回転が起こり、ロック軸11が下方へと送られる。先に説明した上昇の場合と逆の順番でネジ部12がナット部52から外れ、ネジ部13がナット部43に螺合することにより、ロック軸11が基台5側へ引き込まれる。ネジ部12がナット部52の最下方に引き込まれたところで、回転ノブ20の回転が止まり、ロック軸11の上端が上部壁5aの開口40内に収まり、ロックが解除される。   When releasing the fixation of the movable table 4, by rotating the rotary knob 20 in the opposite direction (left direction) to the previous direction, reverse rotation occurs in the screw portion 12 and the nut portion 52, and the lock shaft 11 moves downward. Sent. The screw portion 12 is detached from the nut portion 52 in the reverse order to the above-described ascending case, and the screw portion 13 is screwed into the nut portion 43, whereby the lock shaft 11 is drawn to the base 5 side. When the screw portion 12 is drawn to the lowermost part of the nut portion 52, the rotation knob 20 stops rotating, the upper end of the lock shaft 11 is accommodated in the opening 40 of the upper wall 5a, and the lock is released.

なお、移動台4を基台5に固定するときは、図3に示すように、基台5側の開口40と移動台4側のナット部52の中心を水平方向で同じ位置とする。図示は略すが、移動台4と基台5には固定する際の位置決めをし易くするマーク等がそれぞれ付されており、作業者はそのマークに基づいて水平方向の位置合せを行う。なお、位置合せは厳密に行わなくてもよい。先に説明したように、ネジ部12の上部は面取り加工をしているため、ナット部52に対して水平方向の位置合せに多少のズレ、例えば1mm程度、があっても、螺合できる。   When the movable table 4 is fixed to the base 5, as shown in FIG. 3, the center of the opening 40 on the side of the base 5 and the center of the nut portion 52 on the side of the movable table 4 are set to the same position in the horizontal direction. Although illustration is omitted, the movable table 4 and the base 5 are each provided with a mark or the like for easy positioning when fixed, and the operator performs horizontal alignment based on the mark. Note that the alignment may not be strictly performed. As described above, since the upper portion of the screw portion 12 is chamfered, it can be screwed even if there is a slight misalignment in the horizontal alignment with the nut portion 52, for example, about 1 mm.

このようにして、移動台4の移動の固定・固定解除が、回転ノブ20を一方向へと回転させることでできる。さらに、移動台4の固定時において、ネジ部13がナット部43から外れ、ネジ部12とナット部52との一方のネジ締めで行われることで、ロック軸11や移動台4等に掛かる負荷が低減される。   In this way, the movement of the movable table 4 can be fixed and released by rotating the rotary knob 20 in one direction. Further, when the moving base 4 is fixed, the screw portion 13 is detached from the nut portion 43 and is tightened by one screw of the screw portion 12 and the nut portion 52, so that the load applied to the lock shaft 11, the moving base 4 and the like. Is reduced.

仮に、固定時にロック軸11の両端のネジ部12,13が共にナット部43,52に螺合したままの構成とすると、移動固定をするために、回転ノブ20を回しても、ロック軸11上端のネジ部12がナット部52に螺合しにくくなる惧れがある。また、この構成で固定が行われると、ロック軸11のネジ部12,13とこれらに螺合するナット部43,52に過度の負荷が掛かる惧れがある。   If the screw parts 12 and 13 at both ends of the lock shaft 11 are screwed together with the nut parts 43 and 52 at the time of fixing, the lock shaft 11 can be moved even if the rotary knob 20 is turned to fix the movement. There is a possibility that the screw portion 12 at the upper end is difficult to screw into the nut portion 52. Further, when the fixing is performed in this configuration, there is a possibility that an excessive load is applied to the screw portions 12 and 13 of the lock shaft 11 and the nut portions 43 and 52 screwed to these.

なお、ナット部43とナット部52の距離は、ネジ部13とナット部43の螺合が外れる前に、ネジ部12がナット部52と螺合する程度の距離としているが、これに限るものではない。ネジ部13がナット部43から外れた後に、ネジ部12がナット部52と螺合する程度の距離であってもよい。この場合は、ネジ部13がナット部43から外れたときに、ネジ部12がナット部52に当接していることが条件となる。この状態で、ロック軸11が1回転空回りしている間にネジ部12のネジ山がナット部52のネジ山に掛かることで、ネジ部12とナット部52の螺合が始まる。   The distance between the nut portion 43 and the nut portion 52 is set to such a distance that the screw portion 12 can be screwed with the nut portion 52 before the screw portion 13 and the nut portion 43 are unscrewed. is not. The distance may be such that the screw portion 12 is screwed with the nut portion 52 after the screw portion 13 is detached from the nut portion 43. In this case, the condition is that the screw portion 12 is in contact with the nut portion 52 when the screw portion 13 is detached from the nut portion 43. In this state, the threaded portion of the threaded portion 12 is engaged with the threaded portion of the nut portion 52 while the lock shaft 11 is idled one rotation, whereby the threaded portion 12 and the nut portion 52 are screwed together.

なお、上記では第1のネジ部12と第2のネジ部13を別々に形成したが、第1のネジ部12が第2のネジ部13を兼ねる構成とすることもできる。この場合、ナット部43を基台5の上部壁5aの下に設け、ロック軸11のフランジ14をナット部43の下に位置するように形成する。   In the above description, the first screw portion 12 and the second screw portion 13 are separately formed. However, the first screw portion 12 can also serve as the second screw portion 13. In this case, the nut portion 43 is provided below the upper wall 5 a of the base 5, and the flange 14 of the lock shaft 11 is formed so as to be positioned below the nut portion 43.

また、本実施形態では、回転ノブ20の胴体内21をフランジ14がスライドすることで、回転ノブの位置(高さ)が変わらず、ロック軸11を上下動させる構成としたが、これに限るものではない。ロック軸11の上昇に伴って、フランジ14の上面14aが胴体部21の上面に接した後に回転ノブ20も共に上昇する構成としてもよい。この場合は、開口部42が回転ノブ20の上昇を邪魔しない程度の形成される。また、フランジ14を設けない構成としてもよい。例えば、ロック軸11の中央部に一体的に回転ノブを形成してもよい。このような場合は、ロック軸の上下動と一緒に回転ノブも上下動するが、作業者は回転ノブに一方向の力を加えるだけで、移動台4の固定、固定解除ができる。   In the present embodiment, the flange 14 slides on the body 21 of the rotary knob 20 so that the position (height) of the rotary knob does not change and the lock shaft 11 is moved up and down. It is not a thing. As the lock shaft 11 is raised, the rotary knob 20 may be raised together after the upper surface 14a of the flange 14 is in contact with the upper surface of the body portion 21. In this case, the opening 42 is formed so as not to disturb the ascent of the rotary knob 20. Moreover, it is good also as a structure which does not provide the flange 14. FIG. For example, a rotation knob may be formed integrally with the central portion of the lock shaft 11. In such a case, the rotary knob moves up and down together with the vertical movement of the lock shaft, but the operator can fix and release the movable base 4 only by applying a force in one direction to the rotary knob.

次に、本発明の変容例を図4を用いて説明する。以下の説明では、前述の構成と同じものは同じ部材を用い説明は省略する。先に説明した実施形態では、移動台4の移動固定時にロック軸11の一方だけのネジ部12とナット部52で固定される構成としたが、これに限るものではない。図4(a)、(b)に示すように、ロック軸11aの下端に設けられたネジ部13aとネジ部13aに螺合するナット部43は、ロック軸11aが回転上昇しても外れない構成となっている。図4(a)では、ナット部52の上面に弾性体60を設け、固定部材51で移動台4に固定する構成としている。このような構成では、ネジ部12がナット部52に当接して、先の述べた理由からうまく螺合しない場合、弾性体60が、ネジ部12の上昇力を吸収することで、ネジ部12とナット部52が上端まで螺合(嵌合)する。このように、弾性体60が螺合時の負荷を吸収することにより、移動台4の固定状態でも、ネジ部12、13a、ロック軸11、ナット部43a、52、移動台4、基台5等への負荷が低減される。   Next, a modified example of the present invention will be described with reference to FIG. In the following description, the same components as those described above are used and the description thereof is omitted. In the above-described embodiment, the moving base 4 is fixed with only one screw portion 12 and the nut portion 52 of the lock shaft 11 when the moving table 4 is fixed. However, the present invention is not limited to this. As shown in FIGS. 4A and 4B, the screw portion 13a provided at the lower end of the lock shaft 11a and the nut portion 43 screwed to the screw portion 13a do not come off even when the lock shaft 11a rotates and rises. It has a configuration. In FIG. 4A, an elastic body 60 is provided on the upper surface of the nut portion 52 and is fixed to the movable table 4 by the fixing member 51. In such a configuration, when the screw portion 12 abuts on the nut portion 52 and does not screw well for the above-described reason, the elastic body 60 absorbs the upward force of the screw portion 12, thereby the screw portion 12. And the nut portion 52 are screwed (fitted) to the upper end. In this way, the elastic body 60 absorbs the load at the time of screwing, so that the screw parts 12 and 13a, the lock shaft 11, the nut parts 43a and 52, the moving base 4 and the base 5 can be obtained even when the moving base 4 is fixed. Etc. is reduced.

また、第二の変容例としては、図4(b)に示すラッチ機構を用いたものでもよい。ラッチ機構の嵌合受け部となるケース70とアーム71及びスイッチ72が設けられ、ケース70が固定部材51により移動台4に取り付けられる。基台5側にはラッチ機構の嵌合部となる玉軸73が、ロック軸11bの上端に設けられる。玉軸73は球体状に形成されるため、ロック軸11によってどのように回転しても、アーム71に収まる。   Further, as a second modification example, a latch mechanism shown in FIG. 4B may be used. A case 70 serving as a fitting receiving portion of the latch mechanism, an arm 71, and a switch 72 are provided, and the case 70 is attached to the movable table 4 by the fixing member 51. A ball shaft 73 serving as a fitting portion of the latch mechanism is provided on the upper side of the lock shaft 11b on the base 5 side. Since the ball shaft 73 is formed in a spherical shape, it can be accommodated in the arm 71 no matter how the lock shaft 11 rotates.

回転ノブ20の回転によりロック軸11bが上昇し、玉軸73がアーム71の内側に収まる。さらに玉軸73が上昇しスイッチ72を押すことで、アーム71が玉軸73を挟み込んで保持する。これにより、ラッチ機構の嵌合が起こり、移動台4の移動が固定される。固定の解除は回転ノブ20を逆に回転することで、玉軸73が下方に下がる。さらに、玉軸73が降下し、スイッチ72を押さなくなることで、アーム71の玉軸73保持が解除される。ロック軸11bが基台5に収まることで、移動台4の固定が解除される。   The lock shaft 11 b is raised by the rotation of the rotary knob 20, and the ball shaft 73 is accommodated inside the arm 71. When the ball shaft 73 is further raised and the switch 72 is pressed, the arm 71 sandwiches and holds the ball shaft 73. As a result, the latch mechanism is fitted, and the movement of the movable table 4 is fixed. To release the fixation, the rotation of the rotary knob 20 reverses the ball shaft 73 downward. Furthermore, when the ball shaft 73 is lowered and the switch 72 is not pressed, the holding of the ball shaft 73 of the arm 71 is released. When the lock shaft 11b is accommodated in the base 5, the fixing of the movable base 4 is released.

なお、嵌合部と嵌合受け部はラッチ機構で構成するものに限らない。ネジとナットを用いる比較的嵌合の誤差が厳密なものでなければよい。例えば、一般的に知られているチャック機構等であってもよい。   In addition, a fitting part and a fitting receiving part are not restricted to what comprises a latch mechanism. It is sufficient that the fitting error using screws and nuts is not strict. For example, a generally known chuck mechanism may be used.

本発明の眼科装置の側部断面図である。It is side part sectional drawing of the ophthalmic apparatus of this invention. 固定機構10の模式的断面図である。3 is a schematic cross-sectional view of the fixing mechanism 10. FIG. 回転ノブの回転操作によりロック軸を回転させる回転伝達機構を説明する図である。It is a figure explaining the rotation transmission mechanism which rotates a lock shaft by rotation operation of a rotation knob. 本発明の実施形態の変容例を説明する図である。It is a figure explaining the modification of embodiment of this invention.

符号の説明Explanation of symbols

1 光学系収納部
3 水平移動機構部
4 移動台
5 基台
10 固定機構
11 ロック軸
12、13 ネジ部
20 回転ノブ
43、52 ナット部



DESCRIPTION OF SYMBOLS 1 Optical system storage part 3 Horizontal movement mechanism part 4 Movement stand 5 Base 10 Fixing mechanism 11 Lock shaft 12, 13 Screw part 20 Rotation knob 43, 52 Nut part



Claims (2)

被検眼の検査等を行うための光学系収納部が搭載され、基台上を水平方向に移動可能な移動台と、前記基台に対して前記移動台を固定するための固定機構と、を備える眼科装置において、前記固定機構は、
前記基台の上部壁に形成された開口を通して前記移動台との間で上下移動可能に配置されたロック軸であって、上端に形成された第1ネジ部と該第1ネジ部より下側に形成された第2ネジ部とを有し、且つ前記基台の上部壁を前記移動台側に押さえ付けるフランジを持つロック軸と、
該ロック軸をその軸回りに回転させる回転部材と、
前記移動台側に配置され、前記第1ネジ部に螺合する第1螺合ネジ部と、
前記第2ネジ部に螺合する第2螺合ネジ部であって、固定時に前記第2ネジ部との螺合が外れる位置で前記基台側に配置された第2螺合ネジ部と、を備え、
前記回転部材の回転操作により、前記第2螺合ネジ部に螺合した前記第2ネジ部によってロック軸が移動台側に送り出され、前記第2螺合ネジ部から第2ネジ部が外れる前に前記第1螺合ネジ部に前記第1ネジ部が螺合し、前記フランジが前記基台の上部壁を移動台側に押さえ付ける構成としたことを特徴とする眼科装置。
An optical system storage unit for inspecting an eye to be examined is mounted, and a movable table that can move horizontally on a base, and a fixing mechanism for fixing the movable table to the base. In the ophthalmic apparatus provided with the fixing mechanism,
A lock shaft arranged to be movable up and down through an opening formed in an upper wall of the base, and a first screw part formed at an upper end and a lower side than the first screw part And a lock shaft having a flange that presses the upper wall of the base against the movable base,
A rotating member for rotating the lock shaft around the shaft;
A first threaded screw portion disposed on the movable table side and threadedly engaged with the first threaded portion;
A second screwing screw part screwed into the second screw part, the second screwing screw part arranged on the base side at a position where the screwing with the second screw part is released when fixed; With
By rotating the rotary member, the lock shaft is sent out to the moving base by the second screw portion screwed to the second screw portion, and before the second screw portion is detached from the second screw portion. The ophthalmic apparatus is characterized in that the first screw part is screwed to the first screw part, and the flange presses the upper wall of the base to the moving base side.
被検眼の検査等を行うための光学系収納部が搭載され、基台上を水平方向に移動可能な移動台と、前記基台に対して前記移動台を固定するための固定機構と、を備える眼科装置において、前記固定機構は、
前記基台の上部壁に形成された開口を通して前記移動台との間で上下移動可能に配置されたロック軸であって、上端に形成された嵌合部と該嵌合部より下側に形成されたネジ部とを有するロック軸と、
該ロック軸をその軸回りに回転させる回転部材と、
前記移動台側に配置され、前記嵌合に嵌め合わされる嵌合受け部と、
前記ネジ部に螺合する螺合ネジ部と、を備え、
前記回転部材の回転操作により、前記螺合ネジ部に螺合した前記ネジ部によってロック軸が移動台側に送り出され、ロック軸の前記嵌合部が移動台側の前記嵌合受け部に嵌合される構成としたことを特徴とする眼科装置。


An optical system storage unit for inspecting an eye to be examined is mounted, and a movable table that can move horizontally on a base, and a fixing mechanism for fixing the movable table to the base. In the ophthalmic apparatus provided with the fixing mechanism,
A lock shaft that is arranged to be movable up and down through the opening formed in the upper wall of the base and is formed below the fitting portion and a fitting portion formed at the upper end. A lock shaft having a threaded portion;
A rotating member for rotating the lock shaft around the shaft;
A fitting receiving portion disposed on the movable table side and fitted into the fitting;
A screwing screw part screwed into the screw part,
By the rotation operation of the rotating member, the lock shaft is sent out to the moving table side by the screw portion screwed to the screwing screw portion, and the fitting portion of the lock shaft is fitted into the fitting receiving portion on the moving table side. An ophthalmic apparatus characterized by having a combined configuration.


JP2006084266A 2006-03-24 2006-03-24 Ophthalmic equipment Expired - Fee Related JP4841283B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014210006A (en) * 2013-04-18 2014-11-13 株式会社トーメーコーポレーション Ophthalmologic apparatus

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Publication number Priority date Publication date Assignee Title
JPH0418502A (en) * 1990-05-14 1992-01-22 Seiko Epson Corp Production of color filter
JPH06181886A (en) * 1992-12-18 1994-07-05 Canon Inc Ophthalmologic device
JPH07255668A (en) * 1994-03-22 1995-10-09 Canon Inc Control mechanism of ophthalmologic instrument
JP2001046337A (en) * 1999-08-12 2001-02-20 Ryusyo Industrial Co Ltd Ophthalmologic measurement device
JP2005224257A (en) * 2004-02-10 2005-08-25 Nidek Co Ltd Ophthalmologic apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0418502A (en) * 1990-05-14 1992-01-22 Seiko Epson Corp Production of color filter
JPH06181886A (en) * 1992-12-18 1994-07-05 Canon Inc Ophthalmologic device
JPH07255668A (en) * 1994-03-22 1995-10-09 Canon Inc Control mechanism of ophthalmologic instrument
JP2001046337A (en) * 1999-08-12 2001-02-20 Ryusyo Industrial Co Ltd Ophthalmologic measurement device
JP2005224257A (en) * 2004-02-10 2005-08-25 Nidek Co Ltd Ophthalmologic apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014210006A (en) * 2013-04-18 2014-11-13 株式会社トーメーコーポレーション Ophthalmologic apparatus

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