JP2022030329A - Attachment tool of fastener - Google Patents

Abstract

To provide an attachment tool of a fastener which enables fastener attachment work to be performed smoothly even when a fitting groove is formed at a position away from an end part of a shaft body.SOLUTION: An attachment tool of a fastener includes: a push-in mechanism part 3 which pushes a fastener into a fitting groove S1 of a shaft body S; a supply part 4 which supplies the fastener to a push-in start position where the mechanism part 3 starts pushing the fastener; a first frame 2 in which the supply part 4 is stored; and a holding part which holds the shaft body S by its tip part being inserted into the fitting groove S1 of the shaft body S at the downstream side in a direction in which the fastener is pushed in by the mechanism part 3. The holding part holds the shaft body at the outside of the first frame.SELECTED DRAWING: Figure 1

Description

The present invention relates to a mounting tool for attaching a stopper to a shaft body.

The stopper attached to the fitting groove formed on the outer periphery of the shaft body has an opening at one end of the outer shape, and is pressed to receive the shaft body from the opening to attach to the fitting groove. Will be.
The mounting tools used for this mounting work are a housing with accommodating parts that hold them in a row in a stacked state, a push plate that pushes the leading retaining ring upward at the front end of the housing, and a push. It is provided with a lever-shaped lever that imparts an pushing operation to the plate, and a guide piece that holds the shaft body so as to face upward at the front end portion of the housing with respect to the pushing position of the retaining ring by the pushing plate.
Then, the guide piece is inserted into the fitting groove of the shaft body to position the shaft body, and by rotating the lever in the direction approaching the housing side, the retaining ring is pushed out toward the shaft body and the fitting groove is formed. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 63-86980

Since the guide piece is provided at the front end portion of the housing, the mounting tool is fitted with the retaining ring with the shaft body facing the front end portion of the housing.
In this case, the work can be smoothly performed when the fitting groove is formed at the tip of the shaft, but when the fitting groove is formed at a position away from the tip of the shaft. It is necessary to insert the shaft body from the front end of the housing to the back to position the fitting groove of the shaft body on the guide piece, and the work is complicated because the work of inserting and removing the shaft body is involved.
In addition, a space for inserting a shaft body is required in the housing, which causes a problem that the housing becomes large.

An object of the present invention is to smoothly attach a stopper even when a fitting groove is formed at a position away from the end of the shaft body.

In order to achieve the above object, the fastener mounting tool of the present invention supplies the stopper to a mechanism portion for pushing the stopper into the fitting groove of the shaft body and a position where the stopper is pushed by the mechanism portion. The tip portion is inserted into the fitting groove of the shaft body and held by the supply unit, the first frame accommodating the supply unit, and the downstream side of the mechanism unit in the pushing direction of the stopper from the pushing start position. The holding portion is characterized in that the shaft body is held outside the first frame.

Further, the holding portion may be configured to have an entrance / exit of the shaft body that is open in any direction around the holding position of the shaft body by the holding portion.
Further, the longitudinal direction of the shaft body held by the holding portion and the longitudinal direction of the first frame may be parallel to each other.
Further, a second frame that supports the mechanism portion may be provided, and the second frame may be connected to the first frame in a direction intersecting the first frame.
Further, the pushing portion that moves to the fitting groove side of the shaft body together with the stopper at the pushing start position may be supported by the first frame.
Further, a configuration in which a moving operation is imparted to the pushing portion may be supported by the second frame.
Further, it may be configured to have a base portion that fixedly supports the first frame and the second frame.
Further, the mechanism unit is provided with an input lever for inputting the pushing operation of the stopper, and the input lever is configured to perform the pushing operation of the stopper by rotating the input lever toward the base side. good.
Further, the holding portion has the entrance / exit in one of the directions intersecting both the pushing direction by the mechanism portion and the longitudinal direction of the shaft body held by the holding portion, and the other of the intersecting directions. It may be configured to have a regulation part for restricting the movement of the shaft body.
Further, the width of the doorway may be smaller than the outer diameter of the shaft body.
Further, the tip end portion of the holding portion may have a concave shape in which the inner bottom portion of the fitting groove of the shaft body is fitted.
Further, the stopper may be an E-shaped retaining ring.

As described above, according to the present invention, it is possible to smoothly attach the fastener.

It is a perspective view of the mounting tool which is the 1st Embodiment of this invention. It is a partial front view which looked at the upper part of the mounting tool from the front. It is sectional drawing of the 1st frame. It is sectional drawing along the YZ plane around the upper part of the front end of the 1st frame. It is a perspective view of the supply part taken out from the storage area of the 1st frame. It is sectional drawing around the supply part along the VV line of FIG. It is sectional drawing of the supply unit along the WW line of FIG. It is a perspective view which showed the structure of the mechanism part inside the 2nd frame. It is a front view around the holding part at the time of work which sets a shaft body in a holding part. It is a front view around the holding part at the time of work which sets the shaft body following FIG. 9 in the holding part. It is a front view around the holding part at the time of work which sets the shaft body following FIG. 10 in the holding part. It is a front view around the holding part at the time of work which sets the shaft body following FIG. 11 in the holding part. It is a side view which shows an example of the usage mode of a shaft body and an E type retaining ring. It is a perspective view of the mounting tool which is a 2nd Embodiment. It is a perspective view of the mounting tool which omitted the illustration of the 2nd frame. It is a partially cutout front view which shows the example which provided the position adjustment structure of the extension part to the regulation plate. 17 (A) and 17 (B) are front views showing other examples of fasteners.

[First Embodiment]
Hereinafter, the first embodiment of the invention will be described with reference to the drawings. FIG. 1 is a perspective view of the mounting tool 1 according to the first embodiment, and FIG. 2 is a partial front view of the upper portion of the mounting tool 1 as viewed from the front.
The mounting tool 1 is a tool for fitting the stopper into the fitting groove S1 formed in the shaft body S which is the mounting object. Further, in this embodiment, the E-type stop ring R is exemplified as a stopper to be attached by the attachment tool 1, and the round bar-shaped shaft body S is exemplified as a target to which the E-type stop ring R is attached.

As shown in FIGS. 1 and 2, the mounting tool 1 has a mechanism portion 3 for pushing the E-type retaining ring R into the fitting groove of the shaft body S, and a stopper at a position where the mechanism portion 3 starts pushing the E-type retaining ring R. The supply unit 4, the first frame 2 accommodating the supply unit 4, the second frame 5 supporting the mechanism unit 3, and the downstream side of the pushing operation range of the E-shaped retaining ring R by the mechanism unit 3 in the pushing direction. A holding portion 23A for inserting and holding the tip portion into the fitting groove S1 of the shaft body S is provided, and the first frame 2 and the second frame 5 are connected in a state where their longitudinal directions are orthogonal to each other. There is.
In the following description, the direction of each part of the mounting tool 1 will be described by the triaxial directions of X, Y, and Z orthogonal to each other. The X-axis direction indicates the left-right direction of the mounting tool 1, the Y-axis direction indicates the front-rear direction of the mounting tool 1, and the Z-axis direction indicates the vertical direction of the mounting tool 1.
Further, in the mounting tool 1, the supply unit 4, which will be described later, supplies the E-shaped retaining ring R "front", the opposite direction is "rear", and the mounting tool 1 moves the E-shaped retaining ring R toward the shaft body S. The pushing direction is defined as "up", the opposite direction is defined as "down", and the left hand side is defined as "left" of the mounting tool 1 and the right hand side is defined as "right" while facing "front".

[E-shaped retaining ring]
As shown in FIG. 2, the E-shaped retaining ring R is a flat plate such as a substantially annular metal or hard resin from which a part of the circumference has been removed, and both ends in the circumferential direction (the portion where the circumference has been removed). Three claws R1 are formed on both sides) and the middle portion so as to be convex toward the center. The tips of the three claws R1 are cut out in an arc shape having an inner diameter substantially equal to or slightly smaller than the outer diameter of the inner bottom surface of the fitting groove S1 of the E-shaped retaining ring R.
Further, the opening R2 from which a part of the circumference is removed has a shape that is widened toward the outside in the radial direction. As a result, by pressing the opening R2 against the shaft body S, the opening is expanded and can be easily received in the center of the E-shaped retaining ring R. When the E-shaped retaining ring R is pushed into the fitting groove S1 of the shaft body S, the three claws R1 hold the inner bottom surface of the fitting groove S1 from three sides and restrain the E-shaped retaining ring R in the fitting groove S1. be able to.

[First frame]
FIG. 3 is a cross-sectional view of the first frame 2. The first frame 2 stores and holds the supply unit 4 and supports a part of the configuration of the mechanism unit 3. The supply unit 20 of the E-shaped retaining ring R is configured by the configuration stored or supported in the first frame 2 and the first frame 2.

As shown in FIGS. 1 to 3, the first frame 2 has a longitudinal direction extending along the Y-axis direction in a plan view. The first frame 2 includes an outer frame 21 and an inner frame 22 that are long in the Y-axis direction, and the inner frame 22 is attached to the inner upper portion of the outer frame 21 in a retracted state.
In both the outer frame 21 and the inner frame 22, a metal flat plate such as a chromeless steel plate is bent into a U-shaped cross section to form an open cross-sectional shape, and the openings thereof are directed downward.

The outer frame 21 and the inner frame 22 are formed with three flat surfaces, that is, the upper surface portions 211,221, the left side surface portions 212,222, and the right side surface portions 213,223.
The upper surface portion 211 of the outer frame 21 is parallel to the XY plane and has a rectangular shape extending along the Y-axis direction.
The left side surface portion 212 of the outer frame 21 is bent downward from the left end portion of the upper surface portion 211 and is parallel to the YZ plane. The left side surface portion 212 has a long rectangular shape as a whole in the Y-axis direction when viewed from the X-axis direction, and the front end portion extends downward to widen the width in the Z-axis direction.
The right side surface portion 213 is bent downward from the right end portion of the upper surface portion 211 and is parallel to the YY plane. The right side surface portion 213 has the same shape as the left side surface portion 212 when viewed from the X-axis direction, and faces the left side surface portion 212 in parallel.

The upper surface portion 221 of the inner frame 22 is parallel to the XY plane and has a rectangular shape extending along the Y-axis direction.
The left side surface portion 222 of the inner frame 22 is bent downward from the left end portion of the upper surface portion 221 and is parallel to the YZ plane. The left side surface portion 222 has a constant vertical width over the entire length in the Y-axis direction, except that a lower portion on the front side thereof is partially cut out.
The right side surface portion 223 is bent downward from the right end portion of the upper surface portion 221 and is parallel to the YY plane. The right side surface portion 223 has the same shape as the left side surface portion 222 when viewed from the X-axis direction, and faces the left side surface portion 222 in parallel.
The outer frame is provided by the shaft member 216 with the lower ends of the left side surface portion 222 and the right side surface portion 223 of the inner frame 22 aligned with the lower ends of the left side surface portion 212 and the right side surface portion 213 of the outer frame 21. The inner frame 22 is fixedly stored and held inside the 21.
A gap is formed vertically at regular intervals over the entire length between the upper surface portion 211 of the outer frame 21 and the upper surface portion 221 of the inner frame 22, and this gap space serves as a storage area for the supply unit 4.

FIG. 4 is a cross-sectional view taken along the YY plane around the upper part of the front end of the first frame 2. As shown in FIG. 4, a thin plate-shaped abutting plate 24 is fixedly mounted on the upper front end of the outer frame 21 of the first frame 2. The abutting plate 24 has a flat plate portion along the XZ plane and is arranged so as to face the front end portion of the supply portion 4 stored in the storage area.
The supply unit 4 includes a guide shaft 41 (described later) that holds a plurality of E-shaped retaining rings R, each of which is in a state along the XZ plane, in a state of being arranged side by side in the Y-axis direction, and has an E-shaped retaining ring at the head. Supply is performed forward so that the ring R is abutted against the rear surface of the abutting plate 24.

The abutting plate 24 has a slot L formed on the rear surface side thereof, which is a gap through which one E-shaped retaining ring R can pass through the front ends of the outer frame 21 and the guide shaft 41 of the supply unit 4. The slot L is formed along the Z-axis direction. The gap width of the slot L is set to be equal to or larger than the thickness of one of the E-shaped retaining rings R and less than the thickness of two. Here, a case where the thickness of the E-shaped retaining ring R is 0.8 [mm] and a case where the gap width of the slot L is 0.9 [mm] is illustrated.
The mechanism portion 3 has an extrusion plate 311 inserted from the lower side of the slot L, pushes up the leading E-shaped retaining ring R upward, and press-fits it into the fitting groove S1 of the shaft body S. The extrusion plate 311 is set to the thickness of one E-shaped retaining ring R so that it can slide up and down in the slot L. It may be thinner than the E-shaped retaining ring R.
The position on the rear surface side of the abutting plate 24 facing the front end portion of the supply portion 4 is set as the pushing start position of the E-shaped retaining ring R by the mechanism portion 3.

[Supply]
FIG. 5 is a perspective view of the supply unit 4 taken out from the storage area of the first frame 2, and FIG. 6 is a cross-sectional view of the periphery of the supply unit 4 along the VV line of FIG.
As shown in FIGS. 3, 5, and 6, the supply unit 4 is a guide shaft 41 as a guide unit that supports a plurality of E-shaped retaining rings R so as to be able to supply to the pushing start position in a state where the orientations are aligned. A pressing spring 42 and a pressing member 43 as a pressing portion for pressing the E-shaped retaining ring R supported by the guide shaft 41 toward the pushing start position, and a pressing member 43 provided at the tip of the guide shaft 41, are provided on the guide shaft 41. It is provided with a stopper 48 for restricting the movement of the supported E-shaped retaining ring R to the pushing start position, and a connecting tool 49 for connecting the supply unit 4 to the first frame 2.

The guide shaft 41 is a rod-shaped body extending in the center of the supply unit 4 along the Y-axis direction over almost the entire length. The guide shaft 41 penetrates the center of a plurality of E-shaped retaining rings R (for example, about 200) arranged rearward from the front end portion thereof to support the guide shaft 41. Thereby, a plurality of E-shaped retaining rings R can be held side by side along the Y-axis direction.
The guide shaft 41 has a shape in which a part of the upper side of the outer circumference is flatly cut with respect to a rod-shaped body having a uniform cross section from the front end portion to the vicinity of the rear end portion, and is a rectangular long flat plate-shaped guide plate. The 412 is fixedly equipped by screwing. The guide plate 412 can align the directions of the plurality of E-shaped retaining rings R through which the guide shaft 41 is passed so that the opening R2 faces upward, and prevents the rotation of each E-shaped retaining ring R. Can be done. Further, the guide plate 412 is formed with a uniform width over the entire length in the Y-axis direction, and does not hinder the movement of each E-shaped retaining ring R along the Y-axis direction, and is supplied by smooth movement. Is possible.

A connecting tool 49 is fixedly attached to the rear end of the guide shaft 41 by screwing. A pressing spring 42 made of a coil spring is provided on the outer periphery of the rear end portion of the guide shaft 41 with the rear end portion in contact with the connector 49.
Further, a pressing member 43 is provided on the outer periphery of the guide shaft 41 on the front side of the pressing spring 42 so that the rear end thereof can abut on the pressing spring 42.

The pressing member 43 has a through hole in the center thereof through which the guide shaft 41 can be inserted. This through hole substantially matches the cross-sectional shape of the guide shaft 41 with the guide plate 412 attached along the XZ plane, and the pressing member 43 can slide along the guide shaft 41. ..
As shown in FIG. 2, pin-shaped retaining members 414 protruding from both the left and right sides are provided in the lower portion near the front end portion of the guide shaft 41, and the pressing member 43 does not fall out from the front end portion of the guide shaft 41. It has become like. The retaining ring 414 is arranged so as to avoid the E-shaped retaining ring R, and does not interfere with the loading of the E-shaped retaining ring R from the front end portion of the guide shaft 41 to the pushing start position.

The stopper 48 is attached to the front end portion of the guide shaft 41 so that the replenished E-type retaining ring R does not fall forward from the guide shaft 41 when the guide shaft 41 is replenished with a plurality of E-type retaining rings R. To. The stopper 48 can be detached upward with respect to the guide shaft 41, and is discharged upward by the extrusion plate 311 that pushes up the E-shaped retaining ring R while the supply unit 4 is stored in the storage area of the first frame 2. You can do it.

As shown in FIG. 3, the connector 49 is a tubular body having a closed rear end surface, and the rear end portion of the outer frame 21 can be inserted from the front. A pair of locking claws 491 and 491 that can be inserted inside the left side surface portion 212 and the right side surface portion 213 of the outer frame 21 are provided on the left and right inside of the connector 49. All of these locking claws 491 have elasticity and fit into the connecting holes 214 and 215 provided at the rear ends of the left side surface portion 212 and the right side surface portion 213. Each locking claw 491 is locked so that the connector 49 does not come out rearward from the rear end portion of the outer frame 21 due to this fitting state. Each locking claw 491 is provided with a knob 492 for pushing the locking claw 491 inward. By pushing in each knob 492, the fitting state of the connecting holes 214 and 215 is released from each locking claw 491, and the supply unit 4 can be taken out rearward from the first frame 2.

[Second frame]
As shown in FIG. 1, the second frame 5 supports the configuration of the mechanism unit 3. The drive unit 50 of the E-shaped retaining ring R is configured by the configuration supported by the second frame 5 and the second frame 5.

In the second frame 5, the longitudinal direction in a plan view extends along the X-axis direction. In the second frame 5, a metal flat plate such as a chromeless steel plate is bent into a U-shaped cross section to form an open cross-sectional shape, and the opening is directed downward.

The second frame 5 is formed with three flat surfaces of an upper surface portion 51, a front surface portion 52, and a rear surface portion 53.
The upper surface portion 51 is parallel to the XY plane and has a rectangular shape extending along the X-axis direction.
The front surface portion 52 is bent downward from the front end portion of the upper surface portion 51 so as to be parallel to the XX plane. The right half of the front surface portion 52 has a pentagonal shape in which the lower left corner of the rectangle when viewed from the Y-axis direction is cut off diagonally. The left half of the front surface portion 52 has a narrower vertical width than the right half, and extends to the left with a uniform vertical width.
The rear surface portion 53 is bent downward from the rear end portion of the upper surface portion 51 so as to be parallel to the XX plane. The rear surface portion 53 has the same shape as the front surface portion 52 when viewed from the Y-axis direction, and faces the front surface portion 52 in parallel.

The height of the tip end portion (right end portion) of the second frame 5 is set to be equal to that of the front end portion of the first frame 2. The tip of the second frame 5 is connected by the bracket 54 in a state of being in vertical contact with the front end of the left side surface portion 212 of the outer frame 21 of the first frame 2. As described above, since the longitudinal direction of the first frame 2 is parallel to the Y-axis direction and the longitudinal direction of the second frame 5 is parallel to the X-axis direction, the first frame is viewed from the Z-axis direction. The second frame 5 is arranged so as to be orthogonal to 2.

[Mechanical part]
FIG. 7 is a cross-sectional view of the supply unit 20 along the WW line of FIG. 1, and FIG. 8 is a perspective view showing the configuration of the mechanism portion 3 inside the second frame 5.
As shown in FIG. 8, the mechanism portion 3 faces the direction of pushing the E-shaped retaining ring R into the fitting groove S1 of the shaft body S together with the E-shaped retaining ring R at the pushing start position on the rear side of the abutting plate 24. It has a push-in portion 31 that moves with the push-in portion 31 and a configuration that imparts an ascending / descending operation along the Z-axis direction to the push-in portion 31.
The pushing portion 31 of the mechanism portion 3 is supported on the first frame 2 side, and the configuration for imparting the elevating operation is supported on the second frame 5 side.

As shown in FIG. 7, the push-in portion 31 includes the above-mentioned push plate 311 (see FIG. 8), a slide plate 312 that supports the push plate 311 and a pair of upper and lower slide shafts that penetrate the slide plate 312 in the X-axis direction. It includes a 313 and a support block 315 connected to the upper and lower slide shafts 313 by screws 314. These work together to move up and down.

The extrusion plate 311 has a substantially crank shape when viewed from the X-axis direction, and the upper end portion and the lower end portion have a flat plate shape along the XX plane.
As shown in FIG. 4, the upper end portion of the extrusion plate 311 is inserted from below into the slot L between the abutting plate 24 and the front end portion of the outer frame 21 of the first frame 2, and moves upward. As a result, the E-shaped retaining ring R supplied from the supply unit 4 to the push-in start position in the slot L is pushed up and fitted into the fitting groove S1 of the shaft body S.
The lower end of the extrusion plate 311 is fixedly supported on the front surface of the slide plate 312.

The slide plate 312 is made of a metal plate bent in a U-shape in a plan view consisting of a front portion and left and right side surface portions (the front portion is not shown in FIG. 7), and the lower end portion of the extruded plate 311 is on the front portion thereof. Is fixed by fastening screws or the like.
The left and right side surfaces of the slide plate 312 are equipped with slide shafts 313 penetrating at two places, upper and lower. As a result, the slide plate 312 and the upper and lower slide shafts 313 are integrally raised and lowered.

The upper and lower slide shafts 313 are all parallel to the X-axis direction and are arranged so as to be aligned in the Z-axis direction. Each slide shaft 313 has a cylindrical shape, and a screw 314 connecting each slide shaft 313 to the support block 315 is inserted.
Each of the slide shafts 313 is inserted into the left and right slide guides 316 and 317 provided on the left side surface portion 212 and the right side surface portion 213 of the outer frame 21 of the first frame 2.
The slide guides 316 and 317 are frame bodies provided so as to penetrate the left side surface portion 212 and the right side surface portion 213, respectively, and a long hole-shaped guide hole along the Z-axis direction penetrates the inside thereof in the X-axis direction. It is formed in a state. The slide guides 316 and 317 are arranged so that the positions of the guide holes coincide with each of the left side surface portion 212 and the right side surface portion 213 when viewed from the X-axis direction.
The slide shafts 313 are arranged so as to be inserted across the left and right slide guides 316 and 317. Further, each slide shaft 313 is provided with a flange portion 313a on the left end portion side thereof, and a washer 318 is attached on the right end portion side. As a result, each slide shaft 313 is prevented from moving or rattling in the X-axis direction with respect to the left and right slide guides 316 and 317.
The support block 315 is arranged on the left outer side of the left side surface portion 212 of the outer frame 21 of the first frame 2, and moves up and down together with other configurations of the pushing portion 31 on the left outer side of the first frame 2. Rack teeth 315a arranged in the vertical direction are formed on the left end surface of the support block 315.

In the second frame 5, the configuration for imparting an ascending / descending motion to the pushing portion 31 includes a transmission gear 34 that meshes with the rack teeth 315a provided on the support block 315 and a large gear 35 having arc teeth that mesh with the transmission gear 34. It is provided with an input lever 36 that rotates integrally with the large gear 35, and a return spring 37 that applies a return force to the input lever 36 against the pushing operation direction of the E-shaped retaining ring R.

The transmission gear 34 is composed of a circular spur gear and is arranged on the left side of the support block 315. The transmission gear 34 is rotatably supported around the Y axis by the front surface portion 52 and the rear surface portion 53 of the second frame 5. Then, the transmission gear 34 meshes with the rack teeth 315a formed along the left end surface of the support block 315 by connecting the second frame 5 to the first frame 2. At this time, for example, when the modules of the teeth of the mutual gears are set to 1 [mm], the position accuracy of the transmission gear 34 with respect to the rack teeth 315a may be a predetermined value of about 0 / + 0.5 [mm].

The large gear 35 is a gear having a larger pitch diameter than the transmission gear 34, and teeth are formed only in a part in the circumferential direction. The large gear 35 is arranged on the left side of the transmission gear 34 and is rotatably supported around the Y axis by the front surface portion 52 and the rear surface portion 53 of the second frame 5.

The input lever 36 is connected to the large gear 35 and rotates concentrically and integrally. The input lever 36 extends downward to the left, and by pulling it toward the second frame 5, the support block 315 and the extrusion plate 311 are moved via the large gear 35, the transmission gear 34, and the rack teeth 315a of the support block 315. It can be moved upwards.
The return spring 37 is a so-called torsion coil spring, and one end thereof is arranged so as to abut on the input lever 36, and the input lever 36 is urged in a direction away from the second frame 5.

[Holding part]
9 to 12 are front views of the periphery of the holding portion 23A, and show the work of setting the shaft body S on the holding portion 23A in order.
An outlet of the slot L is provided at the upper portion of the front end surface of the upper surface portion 211 of the outer frame 21 of the first frame 2. A holding portion 23A is provided on the outside of the first frame 2 at the exit of the slot L.
The holding portion 23A includes a shaft body holding member 23 provided so as to face the outlet of the slot L from above, a shaft guide plate 26 as a guide for positioning the shaft body S on the shaft body holding member 23, and a shaft. The body holding member 23 is provided with a regulating plate 25 as a regulating portion for suppressing a positional deviation when positioning the shaft body S.

At the exit of the slot L, the holding portion 23A has the shaft body holding member 23 on the upper side, the regulation plate 25 on the left side, and the shaft guide plate 26 on the lower side, and the positions where the shaft body S is properly held by these are three-way. Surrounded by. The holding portion 23A is open from the right side, and this open portion serves as an entrance / exit 230A of the shaft body S when the shaft body S is relatively arranged on the shaft body holding member 23.

The shaft body holding member 23 positions the shaft body S in the Y-axis direction so that the fitting groove S1 is directly above the slot L, and also pushes the shaft body S to the E-shaped retaining ring R so as not to escape upward. Restrain S from above.
Therefore, the shaft body holding member 23 includes a positioning plate 231 inserted from above into the fitting groove S1 of the shaft body S at a position directly above the slot L, and a support arm 232 that supports the positioning plate 231. ..

The support arm 232 is supported by the upper end portion of the regulation plate 25.
The positioning plate 231 is a flat plate along the XX plane, and the positions of the positioning plate 231 coincide with each other in the Y-axis direction. The tip portion thereof extends downward, and a concave portion 231a having an inner diameter that substantially matches the outer diameter of the inner bottom surface of the fitting groove S1 of the shaft body S is formed. As a result, the tip of the positioning plate 231 fits into the inner bottom surface of the fitting groove S1 of the shaft body S, and the shaft body S can be positioned in the X-axis direction as well.
Further, the shaft body S in which the positioning plate 231 is fitted into the fitting groove S1 is held in a state where the longitudinal direction of the shaft body S is parallel to the longitudinal direction of the first frame 2.

A regulation plate 25 and a shaft guide plate 26 arranged on the upper surface of the front end portion of the upper surface portion 211 are provided at the front end portion of the upper surface portion 211 of the outer frame 21.
The shaft body holding member 23 has a limited width in the X-axis direction in order to avoid interference with the E-shaped retaining ring R in the fitting groove S1, and as a result, a sufficient depth of the recess 231a can be secured. Since it is difficult, the shaft body S may be displaced from side to side.
Therefore, a regulation plate 25 for positioning in the X-axis direction with respect to the shaft body S is provided on the lower left side of the shaft body holding member 23.
The regulating plate 25 has a base portion 251 fixed by a set screw near the corners of the upper surface portion 211 and the left side surface portion 212 of the outer frame 21, and an extending portion 252 extending upward from the base portion 251 in an upright state. I have. The extending portion 252 is erected in a state parallel to the YY plane.
Further, the extension portion 252 has a shaft body holding member 23 attached to the upper end portion thereof.

The right surface of the extending portion 252 of the regulation plate 25 should be separated from the outer circumference of the shaft body S properly positioned on the positioning plate 231 within a slight interval (for example, about 0.1 to 0.5 [mm]). Is located in. It may be narrower than the above range (including 0).
As a result, when the shaft body S and the positioning plate 231 are positioned in the X-axis direction, the shaft body S is arranged so as to be in contact with or close to the right surface of the extending portion 252, thereby minimizing the positional deviation. Therefore, it can be positioned at an almost appropriate position in the X-axis direction.
Further, it is preferable that the extending portion 252 of the regulation plate 25 is higher than the center of the shaft body S properly positioned on the positioning plate 231.
As a result, when the shaft body S comes into contact with the regulation plate 25 when positioning the shaft body S, it is possible to suppress the amount of positional deviation in the X-axis direction.

The shaft guide plate 26 is a regulation plate in a state where the base portion 261 fixed by a set screw near the corners of the upper surface portion 211 and the right side surface portion 213 of the outer frame 21 and the base portion 261 abuts on the upper surface of the upper surface portion 211. It is provided with a guide portion 262 extending to the left to the vicinity of the lower end portion of the extending portion 252 of the 25.

The guide portion 262 of the shaft guide plate 26 is a flat surface whose upper surface is parallel to the XY plane. The guide portion 262 functions as a spacer for positioning the shaft body S and the positioning plate 231 so that the shaft body S does not greatly separate from the positioning plate 231 in the Z-axis direction.
The distance from the upper surface of the guide portion 262 to the lower end portion of the positioning plate 231 coincides with the width in the Z-axis direction of the entrance / exit 230A of the shaft body S in the holding portion 23A (hereinafter, referred to as “width of the entrance / exit 230A”). The width of the doorway 230A is set to be smaller than the outer diameter Sd of the shaft body S and larger than the value obtained by subtracting the depth of the fitting groove S1 from the outer diameter Sd of the shaft body S.

[Installation work of E-shaped retaining ring with installation tool]
A plurality of E-shaped retaining rings R are filled in the supply portion 4 of the mounting tool 1 and mounted on the rear portion of the first frame 2.

Next, the shaft body S and the mounting tool 1 are positioned. Here, a case where the shaft body S is attached to a main body device (not shown) and the mounting tool 1 is positioned with respect to the shaft body S will be described as an example.

When aligning the positioning plate 231 with respect to the shaft body S, first, as shown in FIG. 9, the upper surface of the guide portion 262 of the shaft guide plate 26 is brought into contact with the outer circumference of the shaft body S.
Then, as shown in FIG. 10, the fitting groove S1 of the shaft body S and the positioning plate 231 are positioned in the Y-axis direction, and the lower end portion of the positioning plate 231 is inserted into the fitting groove S1 of the shaft body S to some extent. It is assumed that the state has been set.
In this state, as shown in FIG. 11, the mounting tool 1 is moved to the right so that the shaft body S enters the holding portion 23A from the doorway 230A. When the regulating plate 25 approaches or comes into contact with the shaft body S, the mounting tool 1 can be substantially aligned with the shaft body S in the X-axis direction.
Then, as shown in FIG. 12, the mounting tool 1 is moved downward so that the inner bottom surface of the fitting groove S1 of the shaft body S is in contact with the recess 231a of the positioning plate 231. At this time, the shaft body S and the mounting tool 1 are arranged at appropriate positions by being accurately aligned in the X-axis direction by the alignment effect of the recess 231a of the positioning plate 231.

Before setting the shaft body S, the stopper 48 is discharged from the slot L to the outside of the first frame 2 by operating the input lever 36 in the direction of pulling the input lever 36 toward the second frame 5 side in advance. As a result, the leading E-shaped retaining ring R in the supply unit 4 is pushed forward and supplied to the pushing start position.
Then, when the input lever 36 is operated toward the second frame 5 after the shaft body S is set, the E-shaped retaining ring R is pushed up in the slot L. Then, the E-shaped retaining ring R extruded from the upper end portion of the slot L is inserted into the fitting groove S1 of the shaft body S and can be properly fitted.

[Technical effect of the embodiment]
As described above, since the mounting tool 1 has a structure in which the holding portion 23A holds the shaft body S outside the first frame 2, there is a fitting groove S1 at a position away from the end portion of the shaft body S. In this case, it is not necessary to secure a space for inserting the shaft body S in the first frame 2, and it is possible to reduce the size of the mounting tool 1.

Further, since the holding portion 23A has an entrance / exit 230A of the shaft body S whose right side is open around the shaft body S held by the holding portion 23A, the holding portion 23A is fitted at a position away from the end portion of the shaft body S. Even if there is a mating groove S1, it is possible to align the position with the holding portion 23A from the side of the fitting groove S1.
Therefore, it is not necessary to perform the insertion / removal work along the longitudinal direction of the shaft body S from the end portion of the shaft body S to the position of the fitting groove S1, and it is possible to improve the workability.

Further, the mounting tool 1 has a structure in which the longitudinal direction of the shaft body S held by the holding portion 23A and the longitudinal direction of the first frame are parallel to each other. Since the supply unit 4 supplies the E-shaped retaining ring R in the first frame 2 along the longitudinal direction of the first frame 2, the supply unit 4 is held by the orientation of the supplied E-type retaining ring R and the holding unit 23A. The orientation of the fitting groove S1 of the shaft body S can be matched. Therefore, it is possible to simplify the structure for supplying the E-shaped retaining ring R in the mounting tool 1 and the movement path.

Further, the mounting tool 1 connects the second frame 5 that supports the mechanical portion 3 to the first frame 2 in a direction orthogonal to the first frame 2.
As described above, the shaft body S is held by the holding portion 23A in the direction along the first frame 2, but for example, when the fitting groove S1 is located at a position away from the end portion of the shaft body S, the shaft body S is held. S will be held in a state of being overlapped with the first frame 2. In such a case, if the mechanism portion 3 is provided on the first frame 2 side, the shaft body S becomes an obstacle and the operability is deteriorated.
However, since the mounting tool 1 is provided with the mechanism unit 3 in the second frame 5 orthogonal to the first frame 2, it can be operated from the direction orthogonal to the shaft body S, so that high operability is maintained. It is possible.

Further, in the mounting tool 1, a pushing portion 31 for pushing the E-shaped retaining ring R into the fitting groove S1 of the shaft body S is supported by the first frame 2.
The extrusion plate 311 of the push-in portion 31 moves up and down in the same slot L as the E-type retaining ring R supplied from the supply unit 4, and the slot L has a gap width corresponding to the thickness of the E-type retaining ring R. It is set (for example, the thickness of the E-shaped retaining ring R is 0.8 [mm], and the gap width of the slot L is 0.9 [mm]). Therefore, high accuracy is required for assembling the push-in portion 31 to the slot L. In this case, if the slot L to which the E-shaped retaining ring R is supplied and the pushing portion 31 are separately supported by the first frame 2 and the second frame 5, respectively, the first frame 2 and the second frame, which are large members, are supported. Since high-precision assembly with the two frames 5 is required, the difficulty is dramatically increased.
However, in this mounting tool 1, since the push-in portion 31 is supported by the first frame 2, such a highly difficult assembly becomes unnecessary, and the mounting tool 1 can be easily manufactured.

Further, in the mounting tool 1, a configuration in which an elevating operation is given to the pushing portion 31 is supported by the second frame 5.
Therefore, the shaft body S held in parallel with the first frame 2 can be operated from a direction orthogonal to the shaft body S, so that high operability can be obtained.

Further, the holding portion 23A of the mounting tool 1 intersects both the Z-axis direction, which is the pushing direction by the mechanism portion 3, and the Y-axis direction, which is the longitudinal direction of the shaft body S held by the holding portion 23A. It has an entrance / exit 230A on one side in the axial direction and a regulation plate 25 on the other side.
Since the shaft body S has a structure that enters from the entrance / exit 230A to the left relative to the holding portion 23A, the restricting plate 25 is located to the left, so that the shaft body S that enters moves to the left. Proper positioning is possible without causing a large displacement.

Further, in the mounting tool 1, the width of the doorway 230A of the holding portion 23A in the Z-axis direction is set to be smaller than the outer diameter of the shaft body S.
As a result, the axis S is positioned in the Y-axis direction, and positioning in the X-axis direction can be performed while being constrained in the Y-axis direction. Therefore, positioning in the X-axis direction and positioning in the Y-axis direction are more accurate. It will be possible to do.

Further, since the tip of the positioning plate 231 of the holding portion 23A has a structure having a recess 231a into which the inner bottom portion of the fitting groove S1 of the shaft body S is fitted, the shaft body S is positioned more accurately in the X-axis direction. It is possible to do. Further, when a minute deviation occurs, the shaft body S can be adjusted to a more appropriate position due to the alignment effect of the recess 231a.

[Second Embodiment]
Hereinafter, the second embodiment of the invention will be described with reference to the drawings. FIG. 13 is a side view showing an example of the usage mode of the shaft body S and the E-shaped retaining ring R, FIG. 14 is a perspective view of the mounting tool 1B which is the second embodiment, and FIG. It is a perspective view.

For example, as shown in FIG. 13, the E-shaped retaining ring R is attached to the fitting grooves S1 formed at both ends of the roller P when the shaft body S is equipped with a rotating body such as the roller P.
When the E-shaped retaining ring R is attached to such a shaft body S, it is normal that the shaft body S is not attached to another device, so that it is in a fixed state as in the first embodiment. Instead of aligning the mounting tool 1 with the shaft body S and mounting the E-shaped retaining ring R, align the shaft body S with the mounting tool 1B and mount the E-shaped retaining ring R. It is possible to do.
The second embodiment exemplifies a stationary mounting tool 1B suitable for mounting the E-shaped retaining ring R by aligning the shaft body S with the mounting tool 1B.
In the following description, the same components as the mounting tool 1 described above with respect to the configuration of the mounting tool 1B are designated by the same reference numerals, and duplicate description will be omitted.

The mounting tool 1B is characterized by having a base 6B that fixedly supports the first frame 2B and the second frame 5B.
The base 6B is a rectangular flat plate-like structure along the XY plane. Although it is formed into a hollow flat plate by press molding of a metal flat plate, it may be formed from a solid metal flat plate having the same shape.

The first frame 2B is substantially the same as the first frame 2, but is provided with a leg portion 201B hanging downward at its rear end. The leg portion 201B is erected with the lower end portion fixed to the rear portion of the right side surface of the base portion 6B.
Further, the first frame 2B supports the push-in portion 31 of the supply portion 4 and the mechanism portion 3B, and is supported by the first frame 2B and the first frame 2B, so that the supply unit 20B of the E-shaped retaining ring R is supported. Is configured.

As shown in FIG. 14, the second frame 5B supports a configuration in which the pushing portion 31 in the mechanism portion 3B is provided with an elevating operation along the Z-axis direction, similarly to the second frame 5. The drive unit 50B of the E-shaped retaining ring R is configured by the configuration supported by the second frame 5B and the second frame 5B.

In the second frame 5B, the longitudinal direction in a plan view extends along the X-axis direction. The second frame 5B is formed with three flat surfaces, an upper surface portion 51B, a front surface portion 52B, and a rear surface portion 53B.
The upper surface portion 51B is parallel to the XY plane and has a rectangular shape extending along the X-axis direction.
The front surface portion 52B is bent downward from the front end portion of the upper surface portion 51B so as to be parallel to the XX plane. The front surface portion 52 has an overall rectangular shape when viewed from the Y-axis direction.
The rear surface portion 53B is bent downward from the rear end portion of the upper surface portion 51B so as to be parallel to the XX plane. The rear surface portion 53B has an overall rectangular shape when viewed from the Y-axis direction.
The front surface portion 52B and the rear surface portion 53B are erected in a state where the lower end portion is fixed to the front right end portion of the base portion 6B.

As shown in FIG. 15, the mechanism portion 3B has a configuration for imparting an ascending / descending operation to the pushing portion 31 supported by the first frame 2B and the pushing portion 31 supported by the second frame 5B.
The configuration for imparting an ascending / descending motion to the pushing portion 31 is a large gear 35B having arc teeth that mesh with the rack teeth 315a provided on the support block 315, an input lever 36B that rotates integrally with the large gear 35B, and an input. It is provided with a return spring 37B that applies a return force to the lever 36B against the pushing operation direction of the E-shaped retaining ring R.

Unlike the large gear 35 of the mechanism unit 3, the large gear 35B meshes with the rack teeth 315a provided on the support block 315 without passing through the transmission gear 34, so that the input rotates integrally with the large gear 35B. In the lever 36B, the pushing operation direction of the E-shaped retaining ring R is opposite to that of the input lever 36 described above. That is, when the E-shaped retaining ring R is pushed in, the input lever 36B is operated in the direction of pushing down the rotating end portion toward the base portion 6B. In the case of the stationary mounting tool 1B, it is easier to put the weight on the device and apply force by operating the input lever 36B so as to push down the rotating end portion, and the operability is good.
Since the operation of pushing down from above is applied in this way, the rotation end portion of the input lever 36B extends to the left of the left end portion of the second frame 5B.
Further, since the pushing operation direction of the input lever 36B is opposite to that of the input lever 36 described above, the return spring 37B is urged in the direction of pushing up the rotating end portion of the input lever 36B.

As described above, since the mounting tool 1B includes the base 6B, it functions as a stationary type, and the shaft body S can be aligned with the holding portion 23A of the mounting tool 1B to perform the mounting work of the E-shaped retaining ring R. can.
As described above, when the shaft body S can be easily carried to the mounting tool 1B, the mounting tool 1B can easily perform the mounting work and can improve the work efficiency. be.

Further, the mechanical portion 3B of the mounting tool 1B is configured to be pushed in by rotating the input lever 36B toward the base 6B side. Therefore, in the case of the stationary type, when working. It is easy to apply force to the machine, and it is possible to improve workability.

[others]
The description in each of the above embodiments is an example of the mounting tool according to the present invention, and is not limited thereto. The detailed configuration and detailed operation of each part constituting the mounting tool can be appropriately changed without departing from the spirit of the present invention.

For example, the case where the recess 231a of the positioning plate 231 of the shaft body holding member 23 of the holding portion 23A has an arc shape is illustrated, but if the shaft body S can be positioned in the X-axis direction, the positioning plate 231 has another shape. A recess may be formed. For example, a V-shaped recess that opens downward may be formed. In this case, the outer periphery of the inner bottom surface of the fitting groove S1 of the shaft body S contacts the recess at two points, and the shaft body S is positioned in the X-axis direction.

Further, in each of the above embodiments, the regulation plate 25 exemplifies the case where the base portion 251 and the extending portion 252 are integrally formed, but the present invention is not limited to this. FIG. 16 is a partially cutaway front view showing an example in which the position adjusting structure of the extending portion 252 is provided on the regulation plate 25.
As shown in FIG. 16, the regulation plate 25 is composed of a separate member of the base portion 251 and the extending portion 252, and a long hole 253 along the X-axis direction is provided on the extending portion 252 side through the long hole 253. The extension portion 252 may be fixed to the base portion 251 with screws 254. In this case, by loosening the screw 254, the position of the extending portion 252 can be adjusted in the X-axis direction along the elongated hole 253.
As a result, even if the outer diameter of the shaft body S is different, the position of the extending portion 252 of the regulating plate 25 in the X-axis direction can be adjusted to an appropriate position corresponding to the outer diameter of the shaft body S. The E-shaped retaining ring R can be satisfactorily attached to the shaft body S of the above.

Further, although the E-shaped retaining ring R is exemplified as the stopper to be attached by the attachment tools 1 and 1B, the attachment tool having the characteristics of the present invention can be applied to the attachment of other fasteners. be.
Here, examples of other fasteners are illustrated in FIGS. 17 (A) to 17 (B).

The stopper RA of FIG. 17A is a circular plate-shaped stopper similar to the E-shaped retaining ring R. Since this stopper RA also has an opening RA2, it can be attached by pressing the stopper RA toward the shaft body S so as to receive the shaft body S from here. Further, since it has a penetrating portion in the center, it can be held by the supply portion 4 by utilizing this portion.

The stopper RB of FIG. 17B is a circular shape like the E-shaped retaining ring R, and is a stopper configured in a shape imitating a circular plate shape by a steel wire. Since this stopper RB also has an opening RB2, it can be attached by pressing the stopper RB toward the shaft body S so as to receive the shaft body S from here. Further, since it has a penetrating portion in the center, it can be held by the supply portion 4 by utilizing this portion.

1,1B Mounting tool 2,2B First frame 20,20B Supply unit 201B Leg 23 Shaft holding member 230A Doorway 23A Holding part 231 Positioning plate 231a Recess 25 Restriction plate 26 Shaft guide plate 3, 3B Mechanism part 31 Pushing part 311 Extruded plate 315 Support block 34 Transmission gear 35,35B Large gear 36,36B Input lever 4 Supply part 5,5B Second frame 50,50B Drive unit 6B Base L slot RE type retaining ring (stopper)
RA, RB Stopper S Shaft S1 Fitting groove

Claims (12)

A mechanism that pushes the stopper into the fitting groove of the shaft body,
A supply unit that supplies the stopper to the position where the mechanism unit pushes the stopper, and a supply unit.
The first frame accommodating the supply unit and
It is provided with a holding portion for inserting and holding the tip portion into the fitting groove of the shaft body on the downstream side in the pushing direction of the stopper by the mechanism portion from the pushing start position.
The holding portion is a tool for attaching a stopper, which is characterized by holding the shaft body outside the first frame. The tool for attaching a stopper according to claim 1, wherein the holding portion has an entrance / exit of the shaft body that is open in any direction around a holding position of the shaft body by the holding portion. The fastener mounting tool according to claim 2, wherein the longitudinal direction of the shaft body held by the holding portion is parallel to the longitudinal direction of the first frame. A second frame for supporting the mechanism is provided.
The fastener mounting tool according to claim 3, wherein the second frame is connected to the first frame in a direction intersecting the first frame. The attachment of the stopper according to claim 4, wherein the pushing portion that moves to the fitting groove side of the shaft body together with the stopper at the pushing start position is supported by the first frame. tool. The fastener mounting tool according to claim 5, wherein a configuration for imparting a moving motion to the pushing portion is supported by the second frame. The fastener mounting tool according to any one of claims 4 to 6, further comprising a base for fixing and supporting the first frame and the second frame. The mechanism unit includes an input lever for inputting the pushing operation of the stopper.
The tool for attaching a stopper according to claim 7, wherein the input lever is rotated toward the base side to push the stopper. The holding portion has the entrance / exit in one of the directions intersecting both the pushing direction by the mechanism portion and the longitudinal direction of the shaft body held by the holding portion, and the shaft in the other of the intersecting directions. The fastener mounting tool according to any one of claims 2 to 8, further comprising a regulatory unit that regulates the movement of the body. The fastener mounting tool according to any one of claims 2 to 9, wherein the width of the doorway is smaller than the outer diameter of the shaft body. The tool for attaching a stopper according to any one of claims 2 to 10, wherein the tip portion of the holding portion has a concave shape into which the inner bottom portion of the fitting groove of the shaft body is fitted. The tool for attaching a fastener according to any one of claims 1 to 11, wherein the stopper is an E-shaped retaining ring.

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