JP2016007666A - Circlip fitting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute work for fitting a circlip to a plurality of object members with excellent workability, without requiring to fit the circlip to an insertion tool every time of one-time circlip fitting, by a circlip fitting tool of a simple structure.SOLUTION: A circlip fitting tool is provided with slot opening-closing mechanisms 40 and 44 for opening-closing a slot 38, a circlip storage part 72 for coaxially storing a plurality of circlips R in a layer state to a cylindrical part 34 and a circlip takeout part 76 for releasing the circlips R one by one from the lowest layer from the circlip storage part 72, and a flange part 36 is formed in a structure having an outer diameter Df larger than an inner diameter De of the circlips R of a natural state when the slot 38 exists in an opening state and having an outer diameter Di smaller than an inner diameter De of the circlips R of the natural state when the slot 38 exists in a closed state.

Description

  The present invention relates to a circlip mounting jig, and more particularly to a jig for mounting a circlip in a circumferential groove formed on an inner peripheral surface of a hole.

  Tapered penetration as a circlip mounting jig for mounting a circlip (snap ring) in a circumferential groove formed on the inner peripheral surface of a target hole provided to open on one side of the target member A guide member having a guide hole that forms a hole, and an insertion tool that inserts the circlip into the target hole through the guide hole. The insertion tool is inserted into the guide hole and has a diameter. There is known one constituted by a collet member that is elastically deformable in a direction and has a holding part formed so that one circlip can be engaged and disengaged at a tip part (for example, Patent Document 1).

  As another circlip mounting jig, there is a circlip storage part that stores a plurality of circlips in the upper part, an insertion guide cylinder with a tapered part in the lower part, and rotation inside the insertion guide cylinder Rotation that is provided and has a tapered portion at the bottom, and a feed screw that engages the inner periphery of the circlip is formed on the outer periphery to define an insertion path for the circlip between the inner periphery of the circlip reservoir There is a known circlip mounting jig that loads a circlip into a circumferential groove of a target member while reducing the diameter of the circlip by rotation of the rotating member (for example, Patent Document 1).

Japanese Utility Model Publication No. 60-91369 JP 2014-628 A

  The circlip mounting jig as shown in Patent Document 1 requires that the circlip be attached to the insertion tool every time the circlip is mounted, and the work of mounting the circlip to a plurality of target members is easy. I can't do it well.

  Since the circlip mounting jig as shown in Patent Document 1 has a circlip storage part, it is not necessary to attach the circlip to the insertion tool every time the circlip is mounted. A mechanism for rotating the arranged rotating member is required, and the structure becomes complicated.

  The problem to be solved by the present invention is a circlip mounting jig with a simple structure, and it is not necessary to mount a circlip on an insertion tool every time a circlip is mounted, and the circlip is mounted on a plurality of target members. It is to be able to perform work with good workability.

  The circlip mounting jig (10) according to the present invention has a circumferential groove (110) formed on an inner peripheral surface of a target hole (106) provided in the target member (100) so as to open on one side thereof. And a guide member (20) having a guide hole (22) having a tapered through-hole, and the circlip (R) as a guide hole (22). The guide member (20) has a small-diameter end (22B) of the guide hole (22) at the target hole (106). An inner diameter (Dc) that is equal to or smaller than the inner diameter (Da) of the opening end, and the small-diameter end (22B) is coaxially aligned with the opening end and installed to correspond to the one side, The insertion tool (30) has a cylindrical portion (3 ), A flange portion (36) provided at the lower end of the cylindrical portion (34), a slot (38) extending in the axial direction of the flange portion (36), and the slot (38). A slit opening / closing mechanism (40, 44) for opening and closing and a plurality of circlips (R) are stored coaxially and stacked with respect to the cylindrical portion (36) at the upper end side of the cylindrical portion (34). A circlip storage part (72); and a circlip extraction part (76) for releasing the circlip one by one from the lowermost layer from the circlip storage part (72), and the cylindrical part (34) The outer diameter (Dj) of the circlip (R) is smaller than the inner diameter (De) of the circlip (R), and the flange portion (36) is in a natural state when the slit (38) is in the open state. Outer diameter (D) larger than the inner diameter (De) of ) Has the slit (38) has an internal diameter (De) outer diameter smaller than (Di) of the circlip natural state (R) when in a closed state.

  According to this configuration, it is not necessary to attach the circlip (R) to the insertion tool (30) every time the circlip is mounted, and the work of attaching the circlip (R) to the plurality of target members (100) is performed. It becomes possible to work with good workability. Since the circlip (R) is removed from the circlip storage part 72 by free fall due to gravity, the structure of the insertion tool (30) is not complicated, and the jig for one-handed and one-handed operation is used. As a result, there is no increase in size and weight.

  In the circlip mounting jig according to the present invention, preferably, the cylindrical portion (34) and the flange portion (36) are integrally formed, and a cylindrical inner sleeve (42) is formed on the outer periphery of the cylindrical portion (36). ) Is provided so as to be movable in the axial direction, and when the slit opening / closing mechanism moves the inner sleeve (42) in the axial direction relative to the cylindrical portion (36), the slit (38) Is formed by cam portions (40, 44) formed on the outer surface of the cylindrical portion (34) and the inner surface of the inner sleeve (42) so as to open and close.

  According to this configuration, the slit opening / closing mechanism can be simply configured by the cam portions (40, 44), and the slit opening / closing mechanism does not become complicated with many parts.

  In the circlip mounting jig according to the present invention, preferably, the cam portion (40, 44) closes the slit (38) by pushing down the inner sleeve (42) against the cylindrical portion (36). And a latch mechanism (50, 58) for restricting relative displacement between the inner sleeve (42) and the cylindrical portion (36) and holding the slit (38) in a closed state. It is provided in the insertion tool (30).

  According to this configuration, since the slit (38) is held in the closed state by the action of the latch mechanism (50, 58), the operation of extracting the insertion tool (30) from the target hole (106) and the guide hole (22). Can be performed with good workability.

  In the circlip mounting jig according to the present invention, preferably, a push button mechanism (60) for releasing the latch mechanism (50, 58) is provided on the upper end side of the inner sleeve (42).

  According to this configuration, since the push button mechanism (60) is on the upper end side of the inner sleeve (42), the latch mechanism (50, 58) can be released with good workability.

  In the circlip mounting jig according to the present invention, preferably, the inner sleeve (42) is attached to the cylindrical portion (36) in an upward direction between the inner sleeve (42) and the cylindrical portion (36). A biasing spring (47) is provided.

  According to this configuration, since the inner sleeve (42) is automatically restored with respect to the cylindrical portion (36) by the spring force of the spring (47), workability is improved.

  In the circlip mounting jig according to the present invention, preferably, the circlip extraction part (76) is provided at a lower end part of the circlip storage part (72), and the circlip (R) has a defect opening (A). The circlip (R) is held when the circlip (R) is not aligned, and the circlip (R) is allowed to fall when the circlip (R) is dropped when the circlip (R) is aligned. ) Has a feed member (80) for selectively rotating the defect opening (A) in the lowermost layer to a position aligned with the holding projection (78).

  According to this configuration, the circlip extraction part (76) can be configured simply, and the circlip extraction part (76) does not become complicated with many parts.

  The circlip mounting jig according to the present invention preferably further includes a cylindrical outer sleeve (70) externally displaceable in the circumferential direction of the inner sleeve (42), and the circlip storage part (72). ) Is formed between the outer periphery of the inner sleeve (42) and the inner periphery of the outer sleeve (70), and the feed member is selectively engaged with the defect opening (A) of the circlip (R). The holding projection (78) is provided on one of the inner sleeve (42) and the outer sleeve (70), and the feeding projection (80) is formed on the inner sleeve (70). 42) and the outer sleeve (70).

  According to this configuration, the circlip (R) can be taken out by a simple operation of simply rotating the outer sleeve (70) with respect to the inner sleeve (42).

  According to the circlip mounting jig according to the present invention, it is not necessary to set a circlip to the insertion tool every time a circlip is mounted, so that the work of mounting a plurality of target member circlips can be performed with good workability. Become.

The longitudinal cross-sectional view which shows one Embodiment of the circlip mounting jig by this invention. The side view of the partial cross section of the circlip mounting jig by this embodiment. The longitudinal cross-sectional view of the circlip mounting completion state of the circlip mounting jig by this embodiment. The longitudinal cross-sectional view of the flange part diameter reduction completion state of the circlip mounting jig by this embodiment. The perspective view which shows the initial state of the circlip extraction part of the circlip mounting jig by this embodiment. The perspective view which shows the 90 rotation state of the circlip extraction part of the circlip mounting jig by this embodiment. The perspective view which shows the circlip fall process of the circlip extraction part of the circlip mounting jig by this embodiment. The longitudinal cross-sectional view which shows other embodiment of the circlip mounting jig by this invention.

  Hereinafter, one embodiment of a circlip mounting jig according to the present invention will be described with reference to FIGS.

  First, the target member 100 to which the circlip R is to be attached will be described. The circlip R is a C-shape having a defect opening A (see FIG. 2). The target member 100 is a roller in which a rubber member 104 is vulcanized and bonded to the outer periphery of a metal cylinder 102. The cylindrical body 102 is formed with a central hole (circular hole) 106 that forms a target hole provided so as to pass through the cylindrical body 102 in the axial direction and open on both upper and lower sides of the cylindrical body 102.

  The cylindrical body 102 is formed with a shoulder portion 108 and a circumferential groove 110 located at an intermediate portion in the axial direction of the inner peripheral surface of the center hole 106 with an interval in the axial direction. A ball bearing 112 is disposed in the center hole 106 so as to be sandwiched between the circlip R fitted in the circumferential groove 110 and the shoulder 108 and fixed in the axial direction.

  When the circlip R is mounted on the circumferential groove 110 of the target member 100, the target member 100 is placed on a horizontal surface plate (not shown) in a posture in which the circumferential groove 110 is positioned above the shoulder 108. .

  The circlip R is a C-shape having a defect opening A (see FIG. 2).

  The circlip mounting jig 10 includes a guide member 20 having a guide hole 22 having a tapered through hole, and a circlip R inserted through the guide hole 22 into the center hole 106 as a target hole. Tool 30.

  The large diameter end 22A of the guide hole 22 has an inner diameter Db larger than the inner diameter Da of the upper opening end of the center hole 106, and the small diameter end 22B of the guide hole 22 is equal to or smaller than the inner diameter Da of the opening end of the center hole 106. Has an inner diameter Dc equal to the inner diameter Da. In relation to the circlip R, the inner diameter Db of the large diameter end 22A is larger than the outer diameter Dd of the natural state circlip R, and the inner diameter Dc of the small diameter end 22B is smaller than the outer diameter Dd of the natural state circlip R. .

  The guide member 20 is configured so that the small diameter end 22 </ b> B is coaxially aligned with the upper opening end of the center hole 106 and corresponds to the upper side of the target member 100. That is, the lower bottom surface 22C of the guide member 20 is a flat surface facing the flat upper surface 100A of the target member 100, and the guide member 20 is horizontally placed on the upper surface 100A in a form in which the lower bottom surface 22C is in close contact with the upper surface 100A. .

  The insertion tool 30 has a push core 32. The push core 32 integrally includes a cylindrical portion 34 extending in the vertical direction and a disk-shaped flange portion 36 provided at the lower end portion of the cylindrical portion 34. That is, the cylindrical portion 34 and the flange portion 36 are integrally formed concentrically with each other. The outer diameter Df of the flange portion 36 is smaller than the outer diameter Dd of the natural circlip R and larger than the inner diameter De of the natural circlip R.

  A front end surface (lower end surface) 36A of the flange portion 36 is an annular plane with an outer diameter Df (a plane orthogonal to the axis of the cylindrical portion 34), and abuts on the annular upper surface of the circlip R. Thus, the circlip R is a pushing surface that pushes downward.

  The cylindrical portion 34 and the flange portion 36 are formed with a slit 38 extending in the axial direction. The slits 38 are provided at equal intervals in three to four places around the circumference of the cylindrical portion 34 and the flange portion 36, and each extend in a straight line from the lower end of the flange portion 36 to the vicinity of the upper end of the cylindrical portion 34. ing.

  On the outer periphery (outer surface) in the vicinity of the lower end of the cylindrical portion 34, a core-side cam portion 40 having a larger diameter than other portions is formed.

  A cylindrical inner sleeve 42 is provided concentrically on the radially outer side (outer periphery) of the cylindrical portion 34 so as to be movable only in the axial direction (vertical direction). On the inner periphery (inner surface) of the lower end of the inner sleeve 42, a sleeve-side cam portion 44 that is smaller in diameter than other portions and fits on the outer periphery of the cylindrical portion 34 is formed.

  As shown in FIGS. 1 to 3, when the sleeve-side cam portion 44 is at a position spaced apart from the core-side cam portion 40, the sleeve-side cam portion 44 can elastically deform the cylindrical portion 34 and the flange portion 36 in the direction of diameter reduction. As a natural state, the width of the slit 38 is not reduced. As shown in FIG. 4, the sleeve-side cam portion 44 is engaged with the outer surface of the core-side cam portion 40 when the inner sleeve 42 is pushed down with respect to the cylindrical portion 34, and the cylindrical portion 34 and the flange portion The width of the slit 38 is narrowed under the elastic deformation of 36. In this way, the core-side cam portion 40 and the sleeve-side cam portion 44 form a slit opening / closing mechanism that opens and closes the slit 38.

  Thereafter, as shown in FIG. 4, the state where the width of the slit 38 is narrowed is a closed state, and as shown in FIGS. 1 to 3, the width of the slot 38 is not narrowed. The state is called an open state.

  The outer diameter Dj of the cylindrical portion 34 is smaller than the inner diameter De of the circlip R. The flange portion 36 has an outer diameter Df (see FIG. 1) larger than the inner diameter De of the circlip R in the natural state when the slit 38 is in the open state, and is in the natural state when the slit 38 is in the closed state. The outer diameter Di (see FIG. 4) is smaller than the inner diameter De of the circlip R.

  The inner sleeve 42 has a shape in which the upper opening is closed by the upper end wall 42A. A compression coil spring 47 is provided between the upper end wall 42 </ b> A and the flange portion 34 </ b> A formed at the upper end of the cylindrical portion 34 to urge the inner sleeve 42 upward against the push core 32.

  A concentric center sleeve 46 that extends vertically through the upper end wall 42A is fixedly connected to the inner sleeve 42. The lower end of the center sleeve 46 enters the inside (inside the cylinder) of the cylindrical portion 34, and a guide portion 46A that engages the inner peripheral surface of the cylindrical portion 34 so as to be slidable in the axial direction is formed at the lower end. Yes.

  A cylindrical latch support member 48 is fixed to an intermediate portion of the center sleeve 46 in the axial direction. The latch support member 48 extends in the radial direction of the center sleeve 46, and supports the latch claw 50 so as to be movable in the radial direction (lateral direction) of the center sleeve 46. The latch claw 50 has a projecting portion 52 formed in the latch claw 50 engaged with a long hole 54 formed in the latch support member 48, so that the range of movement relative to the latch support member 48 is restricted, and the latch support member 48. It is urged in a direction protruding radially outward from the center sleeve 46 by the spring force of the compression coil spring 56 provided therein.

  A latch engagement hole 58 is formed in the vicinity of the upper end of the push core 32. The latch claw 50 engages with the latch engagement hole 58 when the inner sleeve 42 moves to the lowered position (slit closed position) shown in FIG. Hold in the closed position. In this manner, the latch pawl 50 and the latch engagement hole 58 constitute a latch mechanism for restricting the relative displacement in the axial direction between the inner sleeve 42 and the push core 32 and holding the slot 38 in the closed state. .

  The latch claw 50 is engaged with the latch engagement hole 58 by the fact that the latch claw 50 is spring-biased by the compression coil spring 56 in the engagement direction with the latch engagement hole 58 and the tip of the latch claw 50 is inclined. When the inner sleeve 42 is positioned at the split closed position, the operation is performed automatically (automatically).

  A push button 60 for releasing the latch is fitted in the opening on the upper end side of the center sleeve 46 so as to be movable in the axial direction. An inclined cam portion 62 is integrally formed on the lower bottom portion of the push button 60. A lever 66 is pivotally attached to the center sleeve 46 by a pivot 64.

  The lever 66 contacts the inclined cam portion 62 at the upper end, contacts the protruding portion 52 of the latch claw 50 at the lower end, and the push button 60 is pushed down against the spring force of the return spring 68, so that FIG. 4, the latch pawl 50 is rotated in the clockwise direction to move the latch pawl 50 in the direction of coming out of the latch engagement hole 58 against the spring force of the compression coil spring 56. The push button mechanism for releasing the latch mechanism in this way is formed in the center sleeve 46 integrated with the inner sleeve 42.

  A cylindrical outer sleeve 70 is provided on the radially outer side (outer periphery) of the inner sleeve 42. The outer sleeve 70 has a shape in which the upper opening is closed by the upper end wall 70A. The upper end wall 70A is sandwiched between the upper end wall 42A of the inner sleeve 42 and the flange portion 46B of the upper end of the center sleeve 46 in the axial direction. A support hole 70B penetratingly formed in the center of the upper end wall 70A is fitted to the outer periphery of the center sleeve 46 so as to be slidable in the circumferential direction, so that the inner sleeve 42 is concentrically arranged with the inner sleeve 42 and only in the circumferential direction. It can be displaced with respect to.

  The outer diameter Dj of the inner sleeve 42 is slightly smaller than the inner diameter De of the circlip R in the natural state. The inner diameter Dk of the outer sleeve 70 is slightly larger than the outer diameter Dd of the circlip R in the natural state. With this dimension setting, a circlip storage portion 72 defined by an annular space is defined between the outer periphery of the inner sleeve 42 and the inner periphery of the outer sleeve 70. The circlip storage part 72 stores a plurality of circlips R in the stacked state coaxially with the cylindrical part 34 and the inner sleeve 42 at the upper end side of the cylindrical part 34.

  An alignment protrusion 74 that is long in the axial direction is formed on the outer periphery of the inner sleeve 42. The alignment protrusion 74 engages with the defect opening A of the circlip R except the lowermost layer laminated on the circlip storage part 72 to align the circumferential position of the defect opening A with one circumferential position. .

  The circlip storage part 72 is open at the bottom, and a circlip take-out part 76 that releases and drops the circlip R of the circlip storage part 72 from the bottom layer one by one at the lower end of the circlip storage part 72 (see FIG. 2, see FIGS. 5 to 7).

  The circlip extraction part 76 includes a holding protrusion 78 provided integrally on the outer periphery of the inner sleeve 42 and a feed protrusion (feeding member) 80 provided integrally on the inner periphery of the outer sleeve 70.

  The holding projection 78 is provided at a position rotated 90 degrees in the circumferential direction with respect to the alignment protrusion 74 and has a circumferential width slightly smaller than the circumferential dimension of the defect opening A of the circlip R. The circlip R stored in the circlip reservoir 72 is held at the lower end of the reservoir 72 and is not aligned with the deficient opening A of the circlip R. When aligned, the circlip R is allowed to fall.

  The feed protrusion 80 is selectively engaged with the defect opening A of the circlip R, that is, detachably engaged with the defect opening A, so that one of the lowermost layers of the circlip R of the circlip storage part 72 is engaged. The circlip R on the lowermost layer is rotated to a position where the defect opening A of the circlip R of the sheet is aligned with the holding projection 78.

  Next, a procedure for using the circlip mounting jig 10 having the above-described configuration will be described.

  First, as shown in FIG. 1 and FIG. 2, the guide member 20 in which the circlip R is loaded in the guide hole 22 in the previous work is placed on the surface plate (not shown) with the large diameter end 22A facing upward. The small diameter end 22B is placed on the upper surface 100A of the upper target member 100 with a positional relationship in which the small diameter end 22B is coaxially aligned with the upper opening end of the center hole 106.

  Next, the flange portion 36 at the distal end (lower end) of the push core 32 is inserted into the guide hole 22 from above, and the distal end surface 36A of the flange portion 36 is pressed against the upper surface of the circlip R in the guide hole 22 to insert the insertion tool 30. Press down. As a result, the circlip R is guided to the inner periphery of the guide hole 22 and descends in the guide hole 22 while being deformed to reduce its diameter, and passes through the guide hole 22 downward as shown in FIG. It enters into the center hole 106 of the target member 100, fits into the circumferential groove 110, and expands and deforms to return to the original natural state in the state of being fitted into the circumferential groove 110. Thereby, the mounting operation of the circlip R to one target member 100 is completed. When the circlip R is pushed in, the slit 38 is in an open state and the flange portion 36 has an outer diameter Df larger than the inner diameter De of the natural circlip R. Therefore, the flange portion 36 is located inside the circlip R. The circlip R is surely pushed in without falling off.

  The operation of pushing down the insertion tool 30 can be performed by grasping the outer periphery of the outer sleeve 70 with a hand. At this time, as shown in FIG. 3, the inner sleeve 42 and the outer sleeve 70 are lowered until the lower end of the inner sleeve 42 abuts against the core side cam portion 40 as shown in FIG. The outer sleeve 70 is lowered against the spring force of the compression coil spring 47.

  Next, the insertion tool 30 is further pushed down by grasping the outer sleeve 70 while the distal end surface 36A is pressed against the upper surface of the circlip R that has been loaded. As a result, as shown in FIG. 4, the inner sleeve 42 and the outer sleeve 70 are further moved downward with respect to the push core 32, and the sleeve side cam portion 44 is engaged with the core side cam portion 40, By this cam engagement, the width of the slit 38 is narrowed, that is, the cylindrical portion 34 and the flange portion 36 of the push core 32 are reduced in diameter while the slit 38 is closed.

  When the second-stage lowering of the inner sleeve 42 and the outer sleeve 70 with respect to the push core 32 proceeds, the latch pawl 50 enters the latch engaging hole 58 as shown in FIG. 4, and the inner sleeve 42, the center sleeve 46, The assembly with the outer sleeve 70 and the push core 32 are connected, and the assembly cannot move in the axial direction with respect to the push core 32. Thereby, the relative displacement in the axial direction between the inner sleeve 42 and the push core 32 is restricted, and the state where the slit 38 is in the closed state is maintained. In this state, the outer diameter Di of the flange portion 36 is slightly smaller than the inner diameter De of the circlip R in the natural state.

  The outer sleeve 70 is rotated 90 degrees with respect to the inner sleeve 42 in a state in which the front end surface 36A is pressed against the end surface of the ball bearing 112. As a result, the feed protrusion 80 is rotationally displaced from the position aligned with the alignment protrusion 74 to the position aligned with the holding protrusion 78 as illustrated in FIG. 6, as illustrated in FIG. To do.

  Since the feed protrusion 80 is fitted in the defect opening A of the lowermost one circlip R in the circlip storage part 72, the lowermost one circlip R is also 90 by the rotational displacement of the feed protrusion 80. The defect opening A is aligned with the holding projection 78. As a result, as shown in FIG. 7, the defect opening A passes through the holding projection 78, and one circlip R spontaneously falls and is loaded into the guide hole 22 for the next operation. . After the circlip R is dropped, the outer sleeve 70 is rotated 90 degrees in the opposite direction with respect to the inner sleeve 42, and the feed protrusion 80 is returned to the position aligned with the alignment protrusion 74 to prepare for the next operation.

  When the circlip R has been dropped, the insertion tool 30 is lifted while holding the outer sleeve 70 and is extracted above the center hole 106 and the guide hole 22. At this time, since the state where the slit 38 is in the closed state is maintained by the latch mechanism, the flange portion 36 whose outer diameter Di is smaller than the inner diameter De of the circlip R in the natural state is formed in the guide hole 22. Can pass through the inside of the circlip R loaded in the upper part of the circlip R without any trouble.

  When the extraction is completed, the push button 60 is pushed, and the latch claw 50 is released from the engagement with the latch engagement hole 58. Accordingly, the assembly of the inner sleeve 42, the center sleeve 46, and the outer sleeve 70 is automatically returned to the original position shown in FIG. 1 by the spring force of the compression coil spring 47. Since the push button 60 is on the upper end side of the inner sleeve 42 and the center sleeve 46, the push button 60 can be pushed with the thumb or the like while the outer sleeve 70 is held by hand, and the release of the latch mechanism is improved. Can be done well. Then, the guide member 20 loaded with the circlip R in the guide hole 22 is placed on the target member 100 for the next operation, and the above-described operation may be repeated.

  Thus, according to the circlip mounting jig 10, it is not necessary to attach the circlip R to the insertion tool 30 every time the circlip is mounted, and the operation of mounting the circlip R to the plurality of target members 100 is performed. It becomes possible to work with good workability. Since the circlip R is removed from the circlip storage part 72 by free fall due to gravity, the structure of the insertion tool 30 is not complicated, and it is increased in size as a jig for one-hand holding and one-handed operation. It becomes an easy-to-use jig without increasing the weight.

  FIG. 8 shows another embodiment of a circlip mounting jig according to the present invention. 8, parts corresponding to those in FIG. 1 are denoted by the same reference numerals as those in FIG. 1, and description thereof is omitted.

  In this embodiment, a centering cylindrical portion 24 concentric with the guide hole 22 is integrally formed at the edge of the guide hole 22 on the small diameter end 22B side. In this embodiment, the centering of the guide hole 22 and the center hole 106 can be performed quickly and reliably only by fitting the centering cylindrical portion 24 into the center hole 106 of the target member 100.

  Although the present invention has been described above with reference to preferred embodiments thereof, the present invention is not limited to such embodiments and can be deviated from the spirit of the present invention, as will be readily understood by those skilled in the art. It is possible to change appropriately within the range not to be.

  For example, the cylindrical portion 34 and the flange portion 36 can be configured by separate members. In this case, the slit opening / closing mechanism that opens and closes the slit 38 is not limited to the cam mechanism that operates by the axial displacement of the push core 32 and the inner sleeve 42, and the flange portion 36 can be restored by opening / closing the slit 38. What is necessary is just to reduce the diameter. Further, the holding protrusion 78 and the alignment protrusion 74 may be provided on the outer sleeve 70, and the feed protrusion 80 may be provided on the inner sleeve 42.

  In addition, all the components shown in the above embodiment are not necessarily essential, and can be appropriately selected without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 Circlip mounting jig 20 Guide member 22 Guide hole 24 Centering cylindrical part 30 Insertion tool 32 Push core 34 Cylindrical part 36 Flange part 38 Slot 40 Core side cam part 42 Inner sleeve 44 Sleeve side cam part 46 Center sleeve 47 Compression Coil spring 48 Latch support member 50 Latch claw 52 Projection part 54 Long hole 58 Latch engagement hole 60 Push button 62 Inclined cam part 64 Axis 66 Lever 70 Outer sleeve 72 Circlip storage part 74 Alignment protrusion 76 Circlip extraction part 78 Holding projection 80 Feeding projection 100 Target member 102 Cylindrical body 104 Rubber member 106 Center hole 108 Shoulder portion 110 Circumferential groove 112 Ball bearing R Circlip A Defect opening

Claims (7)

A jig for attaching a circlip to a circumferential groove formed on an inner circumferential surface of a target hole provided to open on one side of the target member,
A guide member having a guide hole that forms a tapered through hole, and an insertion tool that inserts the circlip into the target hole through the guide hole,
The guide member has a small diameter end of the guide hole having an inner diameter equal to or smaller than an inner diameter of the opening end of the target hole, and the small diameter end is coaxially aligned with the opening end and corresponds to the one side. Configured to install,
The insertion tool includes a cylindrical portion extending in a vertical direction, a flange portion provided at a lower end portion of the cylindrical portion, a slot extending in an axial direction of the flange portion, and a slot for opening and closing the slot. A circlip storage portion for storing a plurality of circlips in a stacked state coaxially with respect to the cylindrical portion at the upper end side of the split opening / closing mechanism; And a circlip extraction part that releases one by one from the lower layer,
An outer diameter of the cylindrical portion is smaller than an inner diameter of the circlip, and the flange portion has an outer diameter larger than an inner diameter of the circlip in a natural state when the slit is in an open state, A circlip mounting jig having an outer diameter smaller than the inner diameter of the circlip in a natural state when in the closed state.   The cylindrical portion and the flange portion are integrally formed, and a cylindrical inner sleeve is provided on the outer periphery of the cylindrical portion so as to be movable in the axial direction, and the slit opening / closing mechanism includes the inner sleeve 2. The servicer according to claim 1, comprising a cam portion formed on an outer surface of the cylindrical portion and an inner surface of the inner sleeve so that the slit is opened and closed when moved in the axial direction with respect to the cylindrical portion. Clip mounting jig.   The cam portion is configured to close the slit by pushing down the inner sleeve with respect to the cylindrical portion, and restricts relative displacement between the inner sleeve and the cylindrical portion to close the slit. The circlip mounting jig according to claim 2, wherein a latch mechanism for holding the circlip is provided in the insertion tool.   The circlip mounting jig according to claim 3, wherein a push button mechanism for releasing the latch mechanism is provided on an upper end side of the inner sleeve.   The circlip attachment treatment according to any one of claims 2 to 4, wherein a spring that urges the inner sleeve upward with respect to the cylindrical portion is provided between the inner sleeve and the cylindrical portion. Ingredients.   The circlip extraction part is provided at the lower end of the circlip storage part and holds the lowermost part of the circlip when not aligned with the circlip defect opening, and the circlip defect opening 6. A holding projection that allows the circlip to fall when aligned with a portion, and a feed member for rotating the defect opening of the lowermost layer of the circlip to a position that aligns with the holding projection. The circlip mounting jig according to any one of the above. Furthermore, the outer sleeve has a cylindrical outer sleeve that is externally displaceable in the circumferential direction.
The circlip reservoir is formed between an outer periphery of the inner sleeve and an inner periphery of the outer sleeve;
The feed member is configured by a feed protrusion that selectively engages with the claw clip opening, the holding protrusion is provided on one of the inner sleeve and the outer sleeve, and the feed protrusion is the inner sleeve. The circlip mounting jig according to claim 6, wherein the circlip mounting jig is provided on one of the sleeve and the outer sleeve.

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