JP2003025247A - Snap ring fitting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability in fitting a snap ring by simply positioning the snap ring to a shaft fitting groove without disturbing the holding state of the snap ring in a manually operated snap rig fitting tool adapted to clamp the shaft fitting groove from above and below to fit the snap ring. SOLUTION: This tool 1 is provided with an upper frame 2 to which a snap ring holding part 21 holding the snap ring is fitted, a lower frame 3 rotatably journaled to the upper frame 2 and fitted with a pressing part 31 for pressing a shaft to the snap ring hold in the snap ring holding part 21, and a lever 4 rotatably journaled to the upper frame 2 and turned from the lower frame 3 toward the upper frame 2. The pressing part 31 is provided with a projection 312 positioned opposite to the snap ring held in the snap ring holding part 21, and the projection 312 is fitted in the fitting groove of the shaft to thereby position the snap ring to the fitting groove.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for attaching a snap ring to a snap ring mounting groove formed in a shaft body.

[0002]

2. Description of the Related Art Inside an image forming apparatus or the like, in order to prevent parts attached to a shaft from coming off or to fix the shaft itself inside the device, the shaft is stopped in a fitting groove formed in the shaft. The wheel is press-fitted and fixed. As this retaining ring, for example, there is an E type retaining ring (JIS standard etc.)
As a tool for attaching the die retaining ring, there are a simple type tool for manually inserting the E type retaining ring in a single shot, and a type of tool in which the E type retaining ring can be repeatedly inserted into the shaft body by an actuator.

However, in the case of the above-mentioned simple type tool, since the E-shaped retaining ring is mounted in the shaft-fitting groove from the direction perpendicular to the shaft body, there is a large work space around the shaft body when the E-shaped retaining ring is mounted. Will be needed. Moreover, since a considerable amount of pressure is required to attach the E-shaped retaining ring to the fitting groove of the shaft body, the burden on the operator is large. Further, a deformation preventing receiving jig is required in order to prevent deformation of the shaft body and the like due to the pressing force at the time of mounting.

In the case of the above-mentioned continuous insertion type tool, in addition to these problems, the structure of the actuator section is complicated, so that the tool is large and heavy, and the cost is high. The wire that conveys to the retaining ring
The electric type has a problem that the electric wire for powering is obstructive and the operability at the time of attaching the E type retaining ring is deteriorated.

Therefore, in order to solve the above-mentioned problems, as shown in Japanese Patent Laid-Open No. 8-257931, a tool is applied along the axial direction to a shaft body to which an E-shaped retaining ring is attached, and manually. E by sandwiching the shaft from above and below
A small snap ring tool for attaching a die snap ring to a shaft has been proposed. This snap ring tool has a grip portion, a lever portion rotatably attached to the grip portion, and a vertical movement by the rotation of the lever portion to sandwich the shaft body and press fit an E-shaped snap ring into the shaft body. And a head section that
By inserting the shaft body into the head portion from the axial direction, gripping the grip portion and the lever portion, rotating the lever portion to move the head portion up and down, and by sandwiching the shaft body fitting groove, a small amount of force E The die retaining ring can be pressed into the fitting groove.

[0006]

However, when the E-shaped snap ring is attached to the shaft body by the above-mentioned manual snap ring tool, the E-shaped snap ring is aligned with the fitting groove of the shaft body inserted in the head portion. Requires laborious work.
That is, the positioning of the E-shaped retaining ring with respect to the shaft-fitting groove is performed by moving the tool in the axial direction of the shaft body while the E-shaped retaining ring held by the head portion is in direct contact with the shaft body. However, it is necessary to carefully search for the fitting groove so that the holding state of the E-shaped snap ring in the head portion does not shift at this time, so the work of positioning the E-shaped snap ring in the fitting groove is troublesome. Of.

The present invention solves the above-mentioned problems, and in a manual type snap ring mounting tool for mounting a snap ring by sandwiching a shaft fitting groove from above and below, without disturbing the holding state of the snap ring. The purpose of the present invention is to enable easy positioning in the shaft fitting groove and to improve the operability when attaching the retaining ring.

[0008]

In order to achieve the above object, the present invention is a tool for attaching a retaining ring to a shaft having a fitting groove for attaching the retaining ring, which retains the retaining ring. An upper frame to which a retaining ring holding portion is attached, and a lower frame which is rotatably supported by the upper frame and to which a pressing portion for pressing the shaft body is attached to a retaining ring held by the retaining ring holding portion. And a lever that is rotatably supported by the upper frame and presses the lower frame toward the upper frame by rotating the upper frame, and the pressing ring attached to the lower frame includes the retaining ring. A protrusion fitted into the fitting groove of the shaft body is formed at a position facing the retaining ring held by the holding portion.

According to this structure, when the shaft body is inserted between the upper frame and the lower frame and the retaining ring is positioned with respect to the fitting groove of the shaft body, the protrusion formed on the pressing portion of the lower frame. The retaining ring can be applied to the fitting groove by moving the tool in the axial direction of the shaft body with the part in contact with the shaft body and fitting the protrusion into the fitting groove. This allows the snap ring held by the snap ring holding portion to be positioned in the fitting groove without contacting the shaft body. It is possible to prevent problems such as falling off from the stopper holding portion.

Further, when the upper frame and the lower frame are formed so that the shaft body can axially penetrate between the both frames, only the fitting groove formed near the end portion of the shaft body is used. In addition, the retaining ring can be easily attached to the fitting groove formed near the center of the shaft.

The retaining ring holding portion includes a magnet portion,
If the retaining ring is attracted and held by the magnetic force, the retaining ring holding portion can increase the retaining force of the retaining ring. In particular, since the holding force in the axial direction of the shaft can be increased, when positioning the retaining ring in the shaft fitting groove,
Even if the retaining ring comes into contact with the shaft body when the tool is moved in the axial direction of the shaft body, it is difficult for the retaining ring to come off the retaining ring holding portion.

If the retaining ring holding portion attached to the upper frame is formed with a recess corresponding to the shape of the upper portion of the retaining ring, the upper portion of the retaining ring is fitted into the recess to form a shaft body. Grip stability is improved when the snap ring is pressed into the fitting groove.

If the retaining ring holding portion is provided with a retaining ring holding portion for holding the retaining ring by urging the retaining ring from both sides, the retaining ring holding portion By gripping the retaining ring from the side, grip stability is improved when the retaining ring is press-fitted into the shaft fitting groove, and the elasticity of the retaining ring gripping part allows the retaining ring gripping part to fit the size of the retaining ring. Since it bends and bends, it can be held corresponding to retaining rings of multiple sizes.

If the pressing portion is provided with a retaining ring pressing portion for adjusting the height of the lower end portion of the retaining ring, the lever is rotated to move the lower end portion of the retaining ring by the retaining ring pressing portion. By pressing, the posture of the retaining ring held by the retaining ring holding portion can be easily corrected to the proper posture.

In addition, the upper frame and the lower frame,
When the shaft inserted between the two frames is formed so as to be visible, the positioning of the retaining ring with respect to the fitting groove of the shaft inserted between the upper frame and the lower frame can be performed visually. Therefore, the operability during the positioning work is improved.

Further, when the retaining ring holding portion and the pressing portion are substantially L-shaped in a side view, it becomes easy to visually recognize the state in which the retaining ring is fitted in the shaft body fitting groove. The property is further improved.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION A snap ring mounting tool according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 (a) is a side view showing a snap ring mounting tool according to the present invention, and FIG. 1 (b) is a view showing a spring mechanism between a lower frame and a lever in the same figure. FIG. 2 is a front view of the snap ring mounting tool. Further, FIG. 3A is a side view showing the retaining ring attaching tool in a state in which the upper frame and the lower frame are closed by rotating the lever, and FIG.
In the figure, the spring mechanism between the lower frame and the lever is illustrated. FIG. 4 is a front view of the retaining ring mounting tool with the upper frame and the lower frame closed. Further, FIG. 5 is a front view showing a state in which an E ring is loaded on the snap ring mounting tool.

A snap ring mounting tool (hereinafter simply referred to as a tool) 1 according to an embodiment of the present invention is for mounting an E-shaped snap ring (hereinafter referred to as an E ring) in a fitting groove formed in a shaft body. Used for the retaining ring holding portion 21.
Is attached to the upper frame 2, a lower frame 3 is rotatably supported by the upper frame 2, and a lower frame 3 is rotatably supported by the upper frame 2 so that the lower frame 3 can be rotated. And a lever 4 for rotating it to the side.

The upper frame 2 has a retaining ring holding portion 21 which is substantially L-shaped in a side view and is attached to a tip portion thereof. At the rear end of the upper frame 2, a rotary support shaft 51 is formed in a direction orthogonal to the axial direction.
Is attached, and the lower frame 3 is rotatably supported on the rotation supporting shaft 51 as a fulcrum. The rotation support shaft 51 is provided below the upper frame 2 so that the shaft P can be inserted into the upper frame 2 and the lower frame 3. The upper frame 2 is formed by bending a flat iron plate or the like, and the E ring 1 is formed inside the upper frame 2.
The shaft body P to which 0 is attached can be inserted and inserted.

Like the upper frame 2, the lower frame 3 is also formed by bending a flat iron plate or the like, and the shaft P can be inserted therein. As a result, it is possible to insert the shaft body P, to which the E-ring 10 is attached, in the axial direction between the upper frame 2 and the lower frame 3. The lower frame 3 is provided at the tip of the lower frame 3 at a position facing the retaining ring holding portion 21.
Further, a pressing portion 31 for pressing the shaft P inserted between the lower frame 3 and the retaining ring holding portion 21 side of the upper frame 2 is attached. A rear end portion of the lower frame 3 is pivotally supported on the upper frame 2 by a pivot shaft 51.

The lever 4 is rotatably supported on the upper frame 2 with a rotation support shaft 52 as a fulcrum, and the rotation support shaft 52 regulates the lower frame 3 to rotate within a predetermined range. Has been done. The long hole 41 formed on the side surface of the lever 4 has a bearing 3 attached to the lower frame 3.
2 is movably fitted. This lever 4 is
When the lower frame 3 is rotated in the direction of the arrow, the lower frame 3 is pushed up via the long hole 41 of the lever 4 and the bearing 32, and the lower frame 3 is rotated toward the upper frame 2 side. In this way, by rotating the lower frame 3 to the upper frame 2 side by the link of the lever 4, the lower frame 3 is moved upward with a smaller amount of force than when the lower frame 3 is directly rotated to the upper frame 2 side. It can be pressed to the frame 2 side. The lever 4 is provided with a notch 43 so as not to interfere with the rotation support shaft 51 when the lever 4 is rotated toward the lower frame 3.

Further, between the lever 4 and the lower surface of the lower frame 3, there is provided a pushing spring 7 composed of a compression coil spring or the like. The lower portion of the lower frame 3 comes into contact with the rotation support shaft 52, and the lever 4 is pushed down from the lower frame 3 by the push spring 7, so that the lower frame 3 and the lever 4 in the stationary state are as shown in FIG. 4, the rear end portion 4 is lowered, the space between the upper frame 2 and the lower frame 3 is opened, and a space sufficient for passing the shaft P through the retaining ring holding portion 21 and the pressing portion 31 is formed. .

The retaining ring holding portion 21 holds the E ring 10 press-fitted into the shaft fitting hole, and holds the loading portion 211 into which the E ring 10 is loaded and the side portion of the E ring 10. And a grip portion 212. The loading portion 211 is made of a magnetic material and holds the E ring 10 by magnetic force. The loading portion 211 has a shape extending downward from the upper frame 2, and has a substantially inverted U-shape in which a lower portion is cut away from approximately the center so that the shaft P can be inserted below the loading portion 211. There is. This notch portion is provided when the E-ring 10 is loaded on the loading portion 211.
The protrusions 10a, 10b, 10c (see FIG. 5) are set so as to protrude into the cutout portions. In addition, a concave portion 211 a corresponding to the upper shape of the E ring 10 is formed on the upper portion of the loading portion 211. E in this recess 211a
By fitting the upper part of the ring 10 into the shaft fitting groove, when the E ring 10 is press-fitted into the shaft fitting groove, the movement of the E ring 10 in the press-fitting direction is restricted, and the grip stability of the E ring 10 is improved. There is.

The grip portion 212 is made of a thin elastic material so as to have elasticity. Grip 21
2 are attached to both side surface portions of the upper frame 2, and are bent to the front surface side of the loading portion 211, as shown in FIG. The grip portion 212 contacts the side portion of the E ring 10 loaded in the loading portion 211.
The contact portion 212a of the grip portion 212 with the E-ring 10
Is shaped to spread outward from the upper part to the lower part in FIG. As a result, the E-ring 10 is attached to the grip portion 2
It is easy to insert from below 12. When the E-ring 10 is loaded on the gripping unit 212 in the loading unit 211, the gripping unit 212 expands in the lateral direction of the E-ring 10 according to the size of the E-ring 10 and grips the E-ring 10 due to its elastic force. A contact pressure is generated on the ring 10. At this time, if the upper portion of the E ring 10 is pushed up until it is fitted into the recess 211a, the E ring 1
In the loading section 211, 0 is fixed at its upper and side portions.

The mounting part 211 and the grip part 212 are
It is detachably attached to the upper surface of the upper frame 2 with screws 61 and 62.
The loading section 211 and the grip section 212 can be exchanged / attached according to the size of the ring 10 (shaft P).
Further, the grip portion 212 can be adjusted so as to obtain a desired elastic force by changing the length n in the side view.

The pressing portion 31 attached to the lower frame 3 is substantially L-shaped in a side view and is formed so as to extend from the lower frame 3 to the upper frame 2 side. The pressing portion 31 has a shaft pressing portion 311 that presses the shaft P inserted between the upper frame 2 and the lower frame 3, and a protrusion 312 that is fitted into a fitting groove of the shaft P. Further, it has a retaining ring pressing portion 313 that presses the lower portion of the E ring 10 loaded in the loading portion 211.

The protrusion 312 and the retaining ring pressing portion 313 are provided at positions facing the E-ring 10 in the state where they are loaded in the loading portion 211, and the retaining ring pressing portion 313 rotates the lever 4 to move it downward. When the frame 3 is pushed up to the upper frame 2 side, the retaining ring pressing portion 313 comes into contact with the lower portion of the E ring 10. The retaining ring pressing portion 313 is E
In order to make the heights of the lower ends of the rings 10 uniform (to correct the deviation of the E ring 10 loaded in the loading unit 211), as shown in FIG. The lower end is pressed at the same height. When the E-ring 10 is loaded in the loading portion 211, the lever 4 is rotated to rotate the retaining ring pressing portion 313 in a state where the shaft P is not inserted between the upper frame 2 and the lower frame 3.
When the lower part of the E-ring 10 is pressed by
Is pushed upward, and the upper part of the E-ring 10 is loaded into the loading section 2
The lower end of the E-ring 10 is fitted in the recess 211a of the groove 11 so that the heights of the lower ends thereof are even.

After the E-ring 10 is loaded in the loading section 211, the shaft P is inserted between the upper frame 2 and the lower frame 3 so that the protrusion 312 (the shaft pressing portion 311) is brought into contact with the shaft P. The tool 1 in the axial direction of the shaft P while
By fitting the protrusions 312 into the shaft fitting groove, the position of the fitting groove in the shaft P can be easily found. As described above, since the protrusion 312 is formed at a position facing the E ring 10 loaded in the loading unit 211, the E loaded in the loading unit 211 in the state where the protrusion 312 is fitted in the fitting groove. The ring 10 will be positioned with respect to the shaft fitting groove.

As shown in FIG. 1, both sides of the upper frame 2 and the lower frame 3 have both sides around the periphery of the upper frame 2 and the lower frame 3 where the retaining ring holding portion 21 and the pressing portion 31 are attached. The shaft P inserted between them is cut out so as to be visible, and the retaining ring holding portion 21 is provided.
It is possible to press fit the E-ring 10 into the fitting groove while observing the E-ring 10 and the shaft-fitting groove that are loaded in the eye with the naked eye. Further, the retaining ring holding portion 21 and the pressing portion 3
1 is formed to have a substantially L-shape when viewed from the side, and the visibility of the E-ring 10 and the fitting groove is further improved.

Next, the E ring 10 is attached to the retaining ring holding portion 21.
The attachment will be described. In its natural state, tool 1
Is a retaining ring holding portion 21 and a pressing portion 31 as shown in FIG.
There is a space between and. In this state, the E-ring 10 is inserted from below the loading section 211 and the grip section 212. Both sides of the E-ring 10 are gripping portions 2
Upon contact with 12, the E-ring 10 is gripped by the gripping portion 212 with a contact pressure. As described above, the grip 21
Since 2 has a shape that spreads downward in a front view, the E-ring 10 can be easily inserted from below. Further push the E-ring 10 and push the upper part of the E-ring 10 to the loading section 211
It is fitted in the concave portion 211a. As a result, the loading unit 211
The loading of the E-ring 10 on the inside is completed. Also, E-ring 1
In a state in which 0 is gripped by the grip portion 212 to some extent, the upper frame 2 and the lever 4 are gripped to rotate the lever 4 toward the upper frame 2 side, and the E ring 10 is pressed by the snap ring pressing portion 313.
If the lower part of the E-ring 10 is pushed up, the E-ring 10 can be accurately fitted into the concave portion 211a, and the heights of the lower parts of the loaded E-rings 10 can be made uniform. You can be proper.

Next, the work of press-fitting the E-ring 10 into the shaft fitting groove by the tool 1 will be described. The tool 1 in which the E ring 10 is attached to the retaining ring holding portion 21 as described above.
Is applied to the end portion of the shaft body P to which the E ring 10 is to be attached, and as shown in FIG. 6, the shaft body P is inserted between the upper frame 2 and the lower frame 3 of the tool 1. Then, the projection 312 (the shaft pressing portion 311) is brought into contact with the peripheral surface of the shaft P, the tool 1 is moved in the axial direction of the shaft P, and the projection 312 is fitted into the fitting groove of the shaft P. Find the whole position. At this time, as described above, the upper frame 2 and the lower frame 3
The state in which the protrusion 312 is applied to the fitting groove can be visually confirmed from the notch on the side surface.

When the projection 312 fits in the fitting groove, the E ring 10 is positioned in the fitting groove. At this point, the upper frame 2 and the lever 4 are gripped and the lower frame 3 is held.
Is rotated to the upper frame 2 side, the shaft body P is sandwiched between the retaining ring holding portion 21 and the pressing portion 31, and the fitting groove is formed in the E ring 1
Press 0. The E-ring 10 has three protrusions 10 a, 10 b, 10 of the E-ring 10 in the loading section 211.
Since c projects into the void portion of the loading portion 211, each of these protrusions fits into the fitting groove. When the E-ring 10 is fitted into the fitting groove, the E-ring 10 is pressed in the outer peripheral direction by the fitting groove, so that the E-ring 10 spreads in the outer peripheral direction. However, as described above, the side portion of the E-ring 10 is gripped. Since the grip portion 212 has elasticity in the lateral direction of the E-ring 10, it is possible to deal with the expansion of the E-ring 10 at this time.

After the E-ring 10 is fitted into the fitting groove in this way, the lever 4 is released to return to the initial position, and the upper frame 2 and the lower frame 3 are separated from the shaft P, and fitted into the fitting groove. The E-ring 10 is separated from the retaining ring holding portion 21 and remains on the shaft P side. Then, the tool 1 is pulled out from the shaft body P in the axial direction. With the above, the attachment of the E-ring 10 is completed.

As described above, according to the tool 1 of this embodiment, when the E ring 10 is positioned with respect to the fitting groove of the shaft P, the protrusion 312 of the pressing portion 31 causes the retaining ring holding portion 21 to move. The E ring 10 can be positioned in the fitting groove without bringing the held E ring 10 into contact with the shaft P. As a result, it is possible to prevent problems such as the E ring 10 falling off from the retaining ring holding portion 21 during the positioning work of the E ring 10. Moreover, since the press-fitted state of the E-ring 10 into the fitting groove can be visually confirmed, the workability is further improved.

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made. For example, in the above-described embodiment, the tool 1 is configured such that the shaft P can penetrate axially between the upper frame 2 and the lower frame 3, but the retaining ring holding portion 21 and the pressing portion 31 are provided. The shaft body P may be inserted only in a part.

Further, in the above embodiment, the loading portion 211 is formed with the concave portion 211a corresponding to the shape of the upper portion of the E ring 10, but the loading portion 211 may not have the concave portion 211a. . Further, in the above embodiment, the retaining ring holding portion 21 is provided with the grip portion 212, but the grip portion 212 may not be provided and the E ring 10 may be held only by the magnetic force of the loading portion 211. Further, in the above embodiment, the upper frame 2 and the lower frame 3
Although a part of the side surface is notched so that the shaft P can be visually recognized, the notch may be omitted.

In the above embodiment, the tool 1 is used for attaching the E ring, but for attaching rings of other shapes such as a crescent type retaining ring, a U type retaining ring and a K type retaining ring. It is also possible to use.

[0038]

As described above, according to the present invention, when the shaft body is inserted between the upper frame and the lower frame and the retaining ring is positioned with respect to the fitting groove of the shaft body, the pressing portion of the lower frame is used. By using the protrusion formed in the, it is possible to perform positioning with respect to the fitting groove without bringing the retaining ring held by the retaining ring holding portion into contact with the shaft body. As a result, it is possible to easily perform positioning with respect to the shaft body fitting groove without disturbing the holding state of the snap ring by the tool, and it is possible to improve the operability when the snap ring is attached.

Further, when the upper frame and the lower frame are formed so that the shaft body can axially penetrate between the both frames, only the fitting groove formed near the end portion of the shaft body is used. In addition, the retaining ring can be easily attached to the fitting groove formed near the center of the shaft in the longitudinal direction.

Further, the retaining ring holding portion includes a magnet portion,
If the retaining ring is attracted and held by the magnetic force, the retaining ring holding portion can increase the retaining force of the retaining ring. In particular, since the holding force in the axial direction of the shaft can be increased, when positioning the retaining ring in the shaft fitting groove,
Even if the retaining ring comes into contact with the shaft body when the tool is moved in the axial direction of the shaft body, it is difficult for the retaining ring to come off the retaining ring holding portion.

If the retaining ring holding portion attached to the upper frame is provided with a recess corresponding to the shape of the upper portion of the retaining ring, the retaining ring upper portion is fitted into the recess so that the shaft is fitted. Grip stability is improved when the snap ring is pressed into the dowel groove.

If the retaining ring holding portion is provided with a retaining ring holding portion for holding the retaining ring by energizing the retaining ring from both sides, the retaining ring holding portion By gripping the retaining ring from the side, grip stability is improved when the retaining ring is press-fitted into the shaft fitting groove, and the elasticity of the retaining ring gripping part allows the retaining ring gripping part to fit the size of the retaining ring. Since it bends and bends, it can be held corresponding to retaining rings of multiple sizes.

If the pressing portion is provided with a retaining ring pressing portion for adjusting the height of the lower end portion of the retaining ring, the lever is rotated to move the lower end portion of the retaining ring by the retaining ring pressing portion. By pressing, the posture of the retaining ring held by the retaining ring holding portion can be easily corrected to the proper posture.

Further, when the upper frame and the lower frame are formed so that the shaft body inserted between the both frames can be visually recognized, the shaft body inserted between the upper frame and the lower frame is fixed to the fitting groove. Since the positioning of the ring can be performed with the naked eye, the operability during the positioning work is improved.

When the retaining ring holding portion and the pressing portion are substantially L-shaped when viewed from the side, it is easy to visually recognize the state where the retaining ring is fitted in the shaft body fitting groove, so that the operability during the positioning work is improved. Is further improved.

[Brief description of drawings]

FIG. 1 (a) is a side view showing a snap ring mounting tool according to the present invention, and FIG. 1 (b) is a view showing a spring mechanism between a lower frame and a lever in the same figure.

FIG. 2 is a front view of the snap ring mounting tool.

FIG. 3 (a) is a side view showing a snap ring mounting tool in a state where an upper frame and a lower frame are closed by rotating a lever, and FIG. 3 (b) shows a spring mechanism between the lower frame and the lever in the same figure. It is the one illustrated.

FIG. 4 is a front view of a retaining ring mounting tool with an upper frame and a lower frame closed.

FIG. 5 is a front view showing a state in which an E ring is loaded on the snap ring mounting tool.

FIG. 6 is a side view showing a state in which a shaft body is inserted into the snap ring mounting tool.

[Explanation of symbols]

1 Retaining ring installation tool 2 upper frame 21 retaining ring holder 211 Loading section 211a recess 212 grip 3 lower frame 31 Pressing part 311 Shaft body pressing part 312 protrusions 313 Retaining ring pressing part 4 levers 10 E-ring P shaft

Claims (8)

[Claims] 1. A tool for attaching a retaining ring to a retaining groove mounting fitting groove formed on a shaft body, the upper frame having a retaining ring holding portion for retaining the retaining ring attached, A lower frame rotatably supported by an upper frame, and a lower frame having a pressing portion for pressing the shaft body attached to a retaining ring held by the retaining ring holding portion; and a lower frame rotatably supported by the upper frame. A lever for rotating the lower frame to the upper frame side by rotating, the pressing portion attached to the lower frame being located at a position facing the retaining ring held by the retaining ring holding portion. A retaining ring mounting tool, characterized in that a projection to be fitted into the fitting groove of the shaft is formed on the. 2. The retaining ring attachment according to claim 1, wherein the upper frame and the lower frame are formed so that the shaft body can axially penetrate between the both frames. Tools. 3. The snap ring mounting tool according to claim 1, wherein the snap ring holding portion includes a magnet portion, and the snap ring is attracted and held by magnetic force. 4. The tool for attaching a snap ring according to claim 1, wherein the snap ring holding portion is formed with a recess corresponding to the shape of the snap ring upper portion. . 5. The retaining ring holding portion is provided with a retaining ring gripping portion that grips the retaining ring by urging the retaining ring so as to sandwich the retaining ring from both sides. The snap ring mounting tool according to claim 4. 6. The stopper according to claim 1, wherein the pressing portion is provided with a stopper ring pressing portion for aligning the heights of the lower ends of the stopper rings. Wheel mounting tool. 7. The side surface portion of the upper frame and the lower frame is formed so that a shaft body inserted between the two frames can be visually recognized. A tool for attaching a snap ring. 8. The snap ring mounting tool according to claim 1, wherein the snap ring holding portion and the pressing portion are substantially L-shaped in a side view.