JPH04122851U - power transmission mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] Rotation of the rotation axis 1 in a direction perpendicular to the rotation axis 1 (perpendicular to the page) on a plane parallel to the rotation axis 1 (plane on line II-II). Convert it into exercise. [Structure] A bearing 2 is inserted into an eccentric recess 1b of a rotating shaft 1, and a connecting link 3 is made to move in a sliding motion. The vertical motion of this sliding gear movement is absorbed by the pivot pin 4 and is not transmitted to the rotating member 5, and only the motion in the direction perpendicular to the plane of the paper is transmitted. The rotating shaft 6 has bearings 11 and 12
It is rotatably supported by. The saw plate 9 is sandwiched between the rotating plate 5 and the holding plate 7, and the rotating shaft 6 is tightened to fix the saw plate 9. When the rotating shaft 1 is rotated, the saw teeth 9 reciprocate in a direction perpendicular to the plane of the paper.

Description

[Detailed explanation of the idea]

0001

【Technical field】

The present invention provides a power transmission mechanism, more specifically, the rotation of a rotating shaft parallel to the rotating shaft. Regarding a mechanism for converting a reciprocating rotational motion in a direction perpendicular to the rotational axis on a plane. Ru.

0002

[Prior art]

In dental treatment, microengines are used to rotate teeth at high speed, etc. is being carried out. However, recently, medical technology has become segmented and specialized, for example, There are also specialists who only treat the hands or only the feet. Therefore, these methods Treatment of bones and feet only requires bone cutting, cutting, etc., but conventionally, this However, there were no cutting tools suitable for treating bones in the hands and feet, which was extremely inconvenient.

0003

【the purpose】

This invention was developed in view of the above-mentioned circumstances, and is particularly designed to treat the fine bones of the hands and feet. Made for the purpose of providing cutting tools suitable for cutting or cutting. It is.

0004

【composition】

In order to achieve the above object, the present invention rotates the rotation axis 1 parallel to the rotation axis 1. A motion for converting into a reciprocating motion in a direction perpendicular to the rotation axis 1 on a plane. A force transmission mechanism, the power transmission mechanism is eccentrically installed at the tip 1a of the rotating shaft 1. The outer race 3a is swingably disposed within the recessed portion 1b and the recessed portion 1b. a bearing 2, and a rib connected to and extending from the inner race 3b of the bearing. a rotating plate connected to a pin 4 at the tip of the link 3; a support mechanism that rotatably supports the plate 5 on a shaft 6 perpendicular to the rotating shaft 1 and the pin shaft 4; It is characterized by consisting of 10. The following is an explanation based on examples of the present invention. I will clarify.

[0005] 1 and 2 are cross sections for explaining one embodiment of the power transmission mechanism according to the present invention. 1 is a cross-sectional view taken along the line I-I in FIG. 2, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. is a rotating shaft, and the rotating shaft 1 is, for example, a micro engine well known in dental treatment. This is a rotating shaft connected to a rotating shaft rotated by. Note that the present invention preferably In particular, the power part of motor handpieces currently on the market as dental treatment instruments, It is used by attaching it in place of the well-known grip part used during dental treatment.

[0006] An eccentric recess 1b is provided at the tip 1a of the rotating shaft 1. A single-seal bearing 2 is swingably engaged within b. That is, Bearin The outer race 2 of the gear 2 is swingably mounted in the recess 1b, and the inner A connecting ring 3 is fixed to the base 2b. Therefore, when the rotating shaft 1 rotates, The recess 1b rotates eccentrically, and the connecting ring 3 has the inner race 2b as one end point. Do the Surikogi exercise.

[0007] The other end of the connecting ring 3 is connected to a rotating plate 5 by a pin 4, and this rotating plate 5 is attached to the rotation shaft 6 so as to rotate integrally therewith. 7 is ri A holding plate 8 is connected to the tip of the link 3 so as to swing integrally with the link 3. The fixed nut member 9 is a saw plate, and has saw teeth 9a at its tip. Head of rotation shaft 6 A driver groove 6a for rotating the rotating shaft 6 is provided in the lower part, and a driver groove 6a for fixing the rotating shaft 6 is provided in the lower part. A screw 6b for screwing into the fixing nut member 8 is provided, and the fixing nut part A protrusion 8a is provided on the upper part of the member 8, and this protrusion 8a is provided on the lower part of the rotating plate 5. The fixing nut member 8 is engaged in the cut groove, thereby making the fixing nut member 8 non-rotatable. Ru. Therefore, if a hard rod is inserted into the groove 6a and the rotation shaft 6 is rotated in one direction, , the shaft 6 and the fixing nut member 8 move upward and move between the rotating plate 5 and the holding plate 7. To tighten the saw plate 9, insert the saw plate 9 between them. It can be fixed between the moving plate 5 and the holding plate 7. Next, rotate the rotation shaft 6 in the opposite direction. When the saw plate 9 is rotated in the direction, the distance between the rotating plate 5 and the holding plate 7 increases, making it impossible to remove the saw plate 9. I can do that.

[0008] According to the present invention, the rotating shaft 1, the pin shaft 5, and the rotating shaft 6 are orthogonal to each other. The swing plate 5 can be moved in the vertical direction (direction A in FIG. 1) by the rotation shaft 6. However, this is because the pin shaft 4 pivots the rocking plate 5 and the connecting link 3. Since they are movably connected, this direction (direction A) due to eccentric movement of the connecting link 3 can absorb the movement of

[0009] On the other hand, the movement in the direction perpendicular to the plane of the paper, that is, the movement in the B direction in FIG. Therefore, it cannot be absorbed and is transmitted to the rotating plate 5 as it is. However, this time The moving plate 5 is connected to the support portion 10 by ball bearings 11 and 12, and is aligned with the rotating shaft 6. The saw plate 9 rotates around the rotation axis 6.

0010

【effect】

As described above, according to the present invention, the rotation of the rotation axis is performed in a plane parallel to the rotation axis. , can be reciprocated in a direction perpendicular to the rotation axis, and therefore has saw teeth at the tip. When you attach the saw board that comes with it, you can move it as if you were holding a pencil and drawing a vertical line. It is possible to cut or cut bones etc. by Note that the sawtooth 9 is shown in FIG. As shown, it can be mounted at any desired angle.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a main part (cross-sectional view taken along line II in FIG. 2) for explaining one embodiment of a power transmission mechanism according to the present invention.

FIG. 2 is a sectional view of a main part (a sectional view taken along the line II-II in FIG. 2) for explaining an embodiment of the power transmission mechanism according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Bearing, 3... Connecting link, 4... Pin, 5... Rotating plate, 6... Rotating shaft, 7... Holding plate, 8... Fixing nut member, 9... Saw plate, 10... Support Members, 11, 12...
bearing.

Claims (1)

[Scope of utility model registration request] 1. A power transmission mechanism for converting the rotation of a rotating shaft into a reciprocating motion in a direction perpendicular to the rotating shaft on a plane parallel to the rotating shaft, the power transmitting mechanism comprising: A recess provided eccentrically at the tip of the rotating shaft, a bearing having an outer race swingably disposed within the recess, a link connected to and extending from the inner race of the bearing, and the link. A power transmission mechanism comprising: a rotating plate connected with a pin at a distal end thereof; and a support mechanism that rotatably supports the rotating plate on an axis orthogonal to the rotating shaft and the pin axis.