JP6402572B2 - Insertion device - Google Patents

Description

  The present invention relates to an insertion device for inserting an insertion part having a ring shape and having an elastic part that expands in an outer diameter direction into an insertion hole of an outer diameter side insertion part.

  In the insertion device shown in Patent Document 1, the insertion part is sandwiched in the axial direction between the pressing part and the inner diameter side insertion part, and the insertion part is moved in the axial direction with respect to the gripping claw. To reduce the diameter of the inserted part, move the reduced diameter maintaining part in the axial direction and place it on the outer periphery of the inserted part, and move the inserted part together with the reduced diameter maintaining part to the outer diameter side inserted part side in the axial direction. By inserting the end face of the diameter maintaining part into contact with the end face of the outer diameter side inserted part and moving the pressing member to the outer diameter side inserted part side, the insertion part gripped on the inner periphery of the reduced diameter maintaining part is The insertion part is pushed into the insertion hole of the outer diameter side insertion part, and the insertion part is fitted into an annular groove formed in the insertion hole.

Japanese Utility Model Publication No. 3-21869

  As described above, the insertion device of Patent Document 1 requires four operations, the structure is complicated by the number of operations, and the cycle time is increased. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an insertion device with a small number of operations, a simple structure, and a short cycle time.

  The invention according to claim 1 is an insertion device for inserting an insertion part having a ring shape and having an elastic part expanding in an outer diameter direction into an insertion hole of an outer diameter side insertion part, wherein the elastic part A gripping claw that grips the gripping claw from the outer diameter side, a support member that guides and supports the gripping claw so as to be movable in the radial direction, and is arranged between the support member and the gripping claw and biases the gripping claw in the outer diameter direction. A first urging member, a pressing member that is axially movable with respect to the support member, and that presses an end surface of the insertion part, and a cam member that is rotatably disposed on the outer periphery of the support member. The cam member has an escape groove for escaping the gripping claws urged by the first urging member to the outer diameter side, and when the cam member is rotated relative to the support member, Overcoming the biasing force of one biasing member It is characterized in that it has a cam surface for moving the.

  According to the configuration of the first aspect, in order to move the gripping claw in the inner diameter direction, the cam member is relatively rotated with respect to the support member, and the insertion part gripped by the gripping claw is inserted into the outer diameter side inserted part. In order to insert into the hole, there is an operation of moving the pressing member relative to the support member in the axial direction. Since these two operations are sufficient, the number of operations is small, the structure is simple, and an insertion device with a short cycle time is provided. Can be provided.

  According to a second aspect of the present invention, in the first aspect, the support member has a support surface on which the insertion part is fitted and supported.

  According to the configuration of the second aspect, it is possible to provide an insertion device with a small number of operations, a simple structure, and a short cycle time. Furthermore, an insertion part having only one or two elastic parts on the circumference can be held by the gripping claw and the support surface, and can be inserted into the outer diameter side insertion part.

  According to a third aspect of the present invention, in the second aspect, the inner diameter-side inserted component is disposed on the inner peripheral side of the outer-diameter-side inserted component, and the support member contacts the end surface of the inner-diameter-side inserted component. It has the contact surface which can contact | connect, It is characterized by the above-mentioned.

  According to the configuration of the third aspect, it is possible to provide an insertion device with a small number of operations, a simple structure, and a short cycle time. Furthermore, an insertion part having only one or two elastic parts on the circumference can be held by the gripping claw and the support surface, and can be inserted into the outer diameter side insertion part. Furthermore, since the position of the support member in the axial direction with respect to the inner diameter side inserted component is reliably determined, the inserted component can be reliably inserted into the inner diameter side inserted component.

  According to a fourth aspect of the present invention, in the third aspect, an insertion groove is formed in the support member so as to penetrate in the axial direction, and the insertion component supported by the support surface is pushed toward the inner diameter side insertion component side. A part of the pressing member is inserted into the insertion groove so that the insertion groove can be taken out.

  According to the configuration of the fourth aspect, it is possible to provide an insertion device with a small number of operations, a simple structure, and a short cycle time. Furthermore, an insertion part having only one or two elastic parts on the circumference can be held by the gripping claw and the support surface, and can be inserted into the outer diameter side insertion part. Furthermore, since the position of the support member in the axial direction with respect to the inner diameter side inserted component is reliably determined, the inserted component can be reliably inserted into the inner diameter side inserted component. Furthermore, since the support member and the pressing member overlap in the radial direction, an insertion device having a small diameter can be provided.

  According to a fifth aspect of the present invention, in the fourth aspect, a center hole is formed in an end face of the inner diameter side inserted component, and a center member engaged with the center hole is movable relative to the support member in the axial direction. A second urging member is interposed between the center member and the support member to urge the center member toward the inner diameter side inserted component side, and an outer peripheral axis of the inner diameter side inserted component and the support The center hole and the center member are arranged coaxially so that the axis of the surface is coaxial.

  According to the configuration of the fifth aspect, it is possible to provide an insertion device with a small number of operations, a simple structure, and a short cycle time. Furthermore, an insertion part having only one or two elastic parts on the circumference can be held by the gripping claw and the support surface, and can be inserted into the outer diameter side insertion part. Furthermore, since the position of the support member in the axial direction with respect to the inner diameter side inserted component is reliably determined, the inserted component can be reliably inserted into the inner diameter side inserted component. Furthermore, since the support member and the pressing member overlap in the radial direction, an insertion device having a small diameter can be provided. Furthermore, since the outer periphery and the support surface of the inner diameter side inserted component are coaxially arranged by the center hole and the center member, the inserted component can be more reliably inserted into the inner diameter side inserted component.

  The invention of claim 6 is characterized in that, in claim 5, a third urging member for urging the support member and the pressing member in a direction to separate them is inserted. is there.

  According to the configuration of the sixth aspect, it is possible to provide an insertion device with a small number of operations, a simple structure, and a short cycle time. Furthermore, an insertion part having only one or two elastic parts on the circumference can be held by the gripping claw and the support surface, and can be inserted into the outer diameter side insertion part. Furthermore, since the position of the support member in the axial direction with respect to the inner diameter side inserted component is reliably determined, the inserted component can be reliably inserted into the inner diameter side inserted component. Furthermore, since the support member and the pressing member overlap in the radial direction, an insertion device having a small diameter can be provided. Furthermore, since the outer periphery and the support surface of the inner diameter side inserted component are coaxially arranged by the center hole and the center member, the inserted component can be more reliably inserted into the inner diameter side inserted component. Further, the third biasing member functions as a function of separating the support member and the pressing member in the axial direction from each other in order to insert the insertion part into the support surface, and as a function of transmitting the axial pressing of the pressing member to the support member. Since it works, an insertion device with a simpler structure can be provided.

  According to a seventh aspect of the present invention, in the sixth aspect, a housing that supports the support member and the pressing member so as to be movable in the axial direction and the rotational direction is disposed on the outer periphery of the support member and the pressing member. A regulating device that fixes the cam member and regulates the movement of the supporting member relative to the housing is disposed between the housing and the supporting member, and the regulating device moves the gripping claw in the inner diameter direction by the cam surface. The rotation direction groove that allows the support member to rotate in one direction with respect to the housing, and the gripping claw moved to the inner diameter side, the opposite of the inner diameter side inserted component of the support member with respect to the housing And an axial groove that allows axial movement to the side.

  According to the configuration of the seventh aspect, it is possible to provide an insertion device with a small number of operations, a simple structure, and a short cycle time. Furthermore, an insertion part having only one or two elastic parts on the circumference can be held by the gripping claw and the support surface, and can be inserted into the outer diameter side insertion part. Furthermore, since the position of the support member in the axial direction with respect to the inner diameter side inserted component is reliably determined, the inserted component can be reliably inserted into the inner diameter side inserted component. Furthermore, since the support member and the pressing member overlap in the radial direction, an insertion device having a small diameter can be provided. Furthermore, since the outer periphery and the support surface of the inner diameter side inserted component are coaxially arranged by the center hole and the center member, the inserted component can be more reliably inserted into the inner diameter side inserted component. Further, the third biasing member functions as a function of separating the support member and the pressing member in the axial direction from each other in order to insert the insertion part into the support surface, and as a function of transmitting the axial pressing of the pressing member to the support member. Since it works, an insertion device with a simpler structure can be provided. Furthermore, since the support member moves in one direction with respect to the housing, the support member moves relative to the housing in the axial direction to the side opposite to the inner diameter-side inserted component. Can be performed reliably.

  According to the present invention, in order to move the gripping claw in the inner diameter direction, the cam member is relatively rotated with respect to the support member, and the insertion part gripped by the gripping claw is inserted into the insertion hole of the outer diameter side inserted part. Therefore, there is an operation of moving the pressing member relative to the support member in the axial direction. Since these two operations are sufficient, the number of operations is small, the structure is simplified, and an insertion device with a short cycle time is provided. Can do.

Sectional drawing before the elastic part compression of the insertion apparatus concerning one Embodiment of this invention. The AA sectional view taken on the line of FIG. 1 concerning one Embodiment of this invention. The BB sectional view taken on the line of FIG. 1 concerning one Embodiment of this invention. Sectional drawing after the elastic part compression of the insertion apparatus concerning one Embodiment of this invention. The CC sectional view taken on the line of FIG. 4 concerning one Embodiment of this invention. The DD sectional view taken on the line of FIG. 4 concerning one Embodiment of this invention. The EE sectional view taken on the line of FIG. 4 concerning one Embodiment of this invention. Sectional drawing after the to-be-inserted component insertion of the insertion apparatus concerning one Embodiment of this invention. The FF sectional view taken on the line of FIG. 8 concerning one Embodiment of this invention. Sectional drawing of the press component concerning one Embodiment of this invention. The external view of the supporting member concerning one Embodiment of this invention.

  An embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the insertion device 10 inserts a ring-shaped spring component 85 into the insertion hole 82 of the gear housing 80. The gear housing 80 is detachably attached to a workpiece side jig (not shown). The insertion device 10 is used by being attached to a portion that advances and retreats with respect to the gear housing 80 of an unillustrated advance / retreat drive device.

  A worm 91 and a worm wheel 95 are arranged in the gear housing 80 in a state where they are engaged with each other. The gear housing 80 is formed with an internal space 81 in which the worm 91 and the worm wheel 95 can be rotatably accommodated, and an insertion hole 82 that communicates the external and internal space 81 with each other is formed. An extension 83 that is recessed in the outer diameter direction is formed at one place on the circumference of the insertion hole 82. The worm 91 is formed with a worm gear that meshes with the worm wheel gear of the worm wheel 95, and small diameter portions 92 having small diameters are formed on both sides of the worm gear. A ball bearing 90 is fitted to the outer periphery of the small diameter portion 92, and a center hole 93 is formed on the axis. A spring member 85 is inserted between the outer periphery of the insertion hole 82 and the ball bearing 90.

  As shown in FIGS. 1 and 2, the spring member 85 has a ring-shaped ring portion 86 with a notch formed at one place on the circumference, and protrudes from the notch portion in the outer diameter direction, and further extends in the circumferential direction. And an inflatable part. The inflating portion protrudes from the one end of the ring portion 86 in the outer diameter direction, further extends in the counterclockwise direction in the circumferential direction, and protrudes in the outer diameter direction from the other end of the ring portion 86, and further in the circumferential direction. And a second inflating portion 88 extending clockwise. The width of the ring portion 86 is divided in half, the first expansion portion 87 is located at one width, the second expansion portion 88 is located at the other width, and the first expansion in the axial direction is a portion extending in the circumferential direction. The part 87 and the second expansion part 88 are arranged.

  As shown in FIG. 1, the insertion device 10 has a cylindrical housing 30, a cam member 40 fitted and fixed to the inner periphery of the other end of the housing 30, and the housing 30 and the cam member 40 move in the rotational direction and the axial direction. A support member 50 fitted into the support member 50, a gripping claw 60 guided and supported by the support member 50 so as to be movable in the radial direction, and the support claw 60 arranged between the support member 50 and the gripping claw 60. The first urging member 64 for urging, the pressing member 20 for pressing the end surface of the spring component 85, and the supporting member 50 are relatively movable in the axial direction. A center member 66 supported and engaged with the center hole 93; a second biasing member 68 that is interposed between the center member 66 and the support member 50 and biases the center member 66 toward the center hole 93; 50 And interposed between the pressing member 20, and a third biasing member 73 for biasing in a direction away these, and a regulation device for regulating the movement of the support member 50 relative to the housing 30

  The housing 30 is attached to a portion that advances and retreats with respect to the gear housing 80 of an unillustrated advance / retreat drive. More specifically, a rotary drive device (not shown) is attached to a part that advances and retreats, and a housing 30 is attached to a part that rotates the rotary drive device. By the advance / retreat drive device, the insertion device 10 is moved in the axial direction to approach and separate from the insertion hole 82 of the gear housing 80, and the rotation device is adapted to give the insertion device 10 rotation about the axis. A first cylindrical surface 31 is formed on the inner periphery of the housing 30, and a first bush 33 and a second bush 34 are fitted and fixed to one end of the first cylindrical surface 31. A large-diameter large-diameter hole recessed in the outer diameter direction is formed at the other end of the first cylindrical surface 31, and the cam member 40 is fitted and fixed in the large-diameter hole.

  As shown in FIGS. 1 and 3, the cam member 40 is fitted into the large-diameter hole of the housing 30 and is fixed to the housing 30 in a state where the phase is determined by the fixing screw 35. The fixing screw 35 is screwed into the cam member 40 through a radial through hole of the housing 30. A second cylindrical surface 41 having the same diameter and the same diameter as the first cylindrical surface 31 is formed on the inner periphery of the cam member 40, and an escape groove 42 recessed in the outer diameter direction at one location on the circumference of the second cylindrical surface 41. Is formed. The relief groove 42 is formed with a cam surface 44 that contacts the gripping claw 60 and moves the gripping claw 60 toward the inner diameter side. With the maximum diameter of the cam surface 44, the gripping portion 61 of the gripping claw 60 is released to a position where it does not contact the first expansion portion 87 and the second expansion portion 88, and the expansion portion 83 of the gear housing 80 has the minimum diameter of the cam surface 44. The first inflatable portion 87 and the second inflatable portion 88 can be compressed to a size that can be inserted into the first inflatable portion.

  The support member 50 has a cylindrical shape, and is fitted to the first cylindrical surface 31 and the second cylindrical surface 41 so as to be movable in the rotational direction and the axial direction. A guide support hole 51 is formed in the support member 50 in the radial direction, and a gripping claw 60 is fitted in the guide support hole 51 so as to be slidable in the radial direction. At the other end of the support member 50, a small diameter portion smaller than the second cylindrical surface 41 is formed, and the support surface 54 on the outer periphery of the small diameter portion has the same diameter as the outer periphery of the ball bearing 90. The ring portion 86 of the spring member 85 is fitted into the support surface 54. A contact surface 53 capable of contacting the end surface of the ball bearing 90 is formed on the end surface of the small diameter portion.

  A center member 66 is fitted on the support member 50 so as to be movable in the axial direction on the axis, and a second urging force is applied between the center member 66 and the support member 50 to urge the center member 66 toward the center hole 93. A member 68 is inserted. The other end of the center member 66 is fitted in the center hole 93, and a removal prevention bolt 67 for preventing the center member 66 from falling off from the support member 50 is connected to one end of the center member 66. .

  In the support member 50, insertion grooves 55 are penetrated in the axial direction at three locations on the circumference, and are formed in the radial direction. The pressing portion 22 of the pressing member 20 is fitted into the insertion groove 55 so as to be movable in the axial direction.

  The regulating device is provided between the housing 30 and the support member 50 and has a function of regulating the movement of the support member 50 with respect to the housing 30. The restricting device includes a rotational groove 52a, an axial groove 52b, and a pinned bolt 32. A rotation direction groove 52 a is formed in the rotation direction on the outer periphery of the support member 50, and an axial groove 52 b is formed toward the center hole 93 continuously from one end of the rotation direction groove 52 a. The pinned bolt 32 is screwed into the housing 30, and the pin portion of the pinned bolt 32 is engaged with the rotational groove 52a or the axial groove 52b. The guide support hole 51, the rotation direction groove 52a, and the axial direction groove 52b are formed between the pair of insertion grooves 55 (FIG. 11).

  As shown in FIGS. 1 and 2, the gripping claw 60 is fitted in the guide support hole 51 of the support member 50 so as to be slidable in the radial direction. At the other end of the gripping claw 60, a gripping portion 61 is formed on the outer diameter side of the support surface 54. A gripping surface 62 having an arc cross section is formed on the inner periphery of the gripping portion 61. When the gripping claw 60 moves to the inner diameter side, the first expanding portion 87 and the second expanding portion 88 are compressed by the gripping surface 62 in the inner diameter direction.

  A holding hole 63 is formed in the radial direction of the support member 50 on the bottom surface of the gripping claw 60, and a first biasing member 64 is inserted between the bottom surface of the holding hole 63 and the bottom surface of the guide support hole 51, The gripping claw 60 is pressed against the cam surface 44 by the urging force of the urging member 64.

  The pressing member 20 includes a cylindrical cylindrical portion 21 and a pressing portion 22 that extends from the other end of the cylindrical portion 21 toward the center hole 93. The pressing portions 22 are arranged at three locations on the circumference (FIG. 10), and are inserted into the insertion grooves 55 of the support member 50 so as to be movable in the axial direction. On the end surface of the pressing portion 22, a pressing surface 23 that can contact the end surface of the spring member 85 is formed. The cylindrical portion 21 is fitted to the first bush 33 and the second bush 34 so as to be rotatable and movable in the axial direction.

  A cylindrical rotary grip 11 is fitted on the outer periphery of the cylindrical portion 21, and the rotary grip 11 is fixed to the pressing member 20 by a set screw 12 screwed into the rotary grip 11. When the other end of the rotating grip 11 comes into contact with one end of the housing 30, the movement of the pressing member 20 in the other direction in the axial direction is restricted. Further, when the pressing member 20 contacts the second bush 34, movement of the pressing member 20 in one direction in the axial direction is restricted. That is, the pressing member 20 is attached to the housing 30 so as not to move in the axial direction, and only rotation is allowed. The rotary grip 11 is attached to a portion that advances and retreats with respect to the gear housing 80 of an advancing / retreating drive device (not shown). The advancing / retreating drive device allows the pressing member 20 to move in the axial direction so as to approach and separate from the insertion hole 82 of the gear housing 80.

  A through hole is formed in the cylindrical portion 21 so as to penetrate in the axial direction on the axis, and the third bush 25 and the fourth bush 26 are fitted and fixed in the through hole. A connecting shaft 70 is slidably fitted to the third bush 25 and the fourth bush 26, and the other end of the connecting shaft 70 is screwed coaxially to the support member 50. A stop washer 71 is attached to the other end of the connecting shaft 70 via a mounting bolt 72. The stop washer 71 abuts against one end of the pressing member 20 to prevent the support member 50 from coming off the pressing member 20. A third urging member 73 that urges the pressing member 20 and the supporting member 50 in a direction to separate them is inserted.

  Next, the insertion operation of the spring component 85 will be described based on the configuration described above.

  A new gear housing 80 is installed on a workpiece side jig (not shown). The insertion device 10 is in a position separated from the gear housing 80 by an unillustrated advance / retreat drive device. The cam member 40 is rotated clockwise together with the housing 30 by a rotation driving device (not shown), the gripping claw 60 is positioned in the escape groove 42, and the gripping claw 60 is moved to the maximum of the cam surface 44 by the biasing force of the first biasing member 64. It is in the position pressed by the diameter (FIGS. 1, 2, and 3).

  The ring member 86 of the spring member 85 is fitted into the support surface 54, and the phase of the spring member 85 is determined so that the first expanding portion 87 and the second expanding portion 88 correspond to the gripping surface 62.

  The cam member 40 is rotated counterclockwise with respect to the support member 50 together with the housing 30 by a rotation drive device (not shown). As a result, the gripping claw 60 moves toward the inner diameter side against the biasing force of the first biasing member 64 by the cam surface 44, and the first expanding portion 87 and the second expanding portion 88 are compressed in the inner diameter direction by the gripping surface 62. To do. Finally, the gripping claw 60 is at the minimum diameter of the cam surface 44, that is, at a position where it comes into contact with the second cylindrical surface 41 (FIGS. 4, 5, 6, and 7).

  The insertion device 10 is brought close to the gear housing 80 by an advancing / retreating drive device (not shown). As a result, the center member 66 engages with the center hole 93, and the center member 66 moves in the axial direction opposite to the center hole 93 with respect to the support member 50 against the urging force of the second urging member 68. . Subsequently, the gripping part 61 is inserted into the extension part 83, the contact surface 53 comes into contact with the end face of the ball bearing 90, and the support member 50 against the pressing member 20 against the biasing force of the third biasing member 73. And move in the axial direction to the opposite side of the center hole 93. Further, the pressing surface 23 comes into contact with the end surface of the spring member 85, and the ring portion 86 of the spring member 85 located on the support surface 54 is pushed out and inserted into the outer periphery of the insertion hole 82 and the ball bearing 90. The first inflating portion 87 and the second inflating portion 88 positioned on the gripping surface 62 are pushed out and inserted into the expanding portion 83 (FIGS. 8 and 9). When the first inflating portion 87 and the second inflating portion 88 are inserted into the expanding portion 83, the diameter expands in the outer diameter direction.

  The insertion device 10 is separated from the gear housing 80 by an advancing / retreating drive device (not shown). The cam member 40 is rotated clockwise together with the housing 30 by an unillustrated rotational drive device. As a result, the gripping claw 60 moves to the outer diameter side by the biasing force of the first biasing member 64, and the gripping claw 60 contacts the maximum diameter of the cam surface 44.

  The gear housing 80 incorporating the spring member 85 is removed from the unillustrated workpiece side jig.

  The present invention is not limited to these embodiments, and can of course be implemented in various modes without departing from the gist of the present invention.

  In the above-described embodiment, the spring member 85 has a ring portion 86 that is ring-shaped and has a notch formed at one place on the circumference, and an inflating portion that protrudes from the notch portion in the outer diameter direction and further extends in the circumferential direction. The optimum insertion device 10 has been described. As another embodiment, in the case of the spring member 85 in which the inflating portions are arranged at three intervals on the circumference, the gripping claws 60, the relief grooves 42, and the cam surfaces 44 are arranged at three intervals on the circumference. In this case, the support surface 54 can be eliminated.

  In the above-described embodiment, the example in which the housing 30 and the cam member 40 are rotated with respect to the support member 50 has been described. As another embodiment, the support member 50 may be rotated with respect to the housing 30 and the cam member 40. In this case, the support member 50 is rotated clockwise to move the gripping claw 60 in the inner diameter direction. When the support member 50 is rotated clockwise, it is desirable to determine the phase of the insertion device 10 with respect to the gear housing 80 so that the expansion portion of the spring member 85 corresponds to the expansion portion 83 of the gear housing 80.

  10: insertion device, 20: pressing member 20: housing, 40: cam member, 42: relief groove, 44: cam surface, 50: support member, 52a: rotational groove, 52b: axial groove, 53: contact surface 54: support surface, 55: insertion groove, 60: gripping claw, 64: first urging member, 68: second urging member, 73: third urging member, 80: gear housing (outer diameter side inserted) Parts), 82: insertion hole, 83, expansion part, 85: spring member (insertion part), 87: first expansion part (elastic part), 88: second expansion part (elastic part), 90: ball bearing (inner diameter) Side insert parts), 92: center member, 93: center hole

Claims (7)

An insertion device for inserting an insertion part having a ring shape and having an elastic part that expands in an outer diameter direction into an insertion hole of an outer diameter side insertion part, the gripping claw for gripping the elastic part from the outer diameter side A support member that guides and supports the gripping claws so as to be movable in the radial direction, a first biasing member that is disposed between the support member and the gripping claws and biases the gripping claws in the outer diameter direction, A pressing member configured to be relatively movable in the axial direction with respect to the support member and pressing an end surface of the insertion part; and a cam member disposed so as to be relatively rotatable on an outer periphery of the support member. And an escape groove for escaping the gripping claws urged by the first urging member to the outer diameter side, and overcoming the urging force of the first urging member when rotated relative to the support member. And has a cam surface to move the gripping claw to the inner diameter side Insertion and wherein the. The insertion device according to claim 1, wherein the support member has a support surface on which the insertion component is fitted and supported. The inner diameter side inserted component is disposed on the inner peripheral side of the outer diameter side inserted component, and the support member has a contact surface capable of abutting against an end surface of the inner diameter side inserted component. Item 3. The insertion device according to Item 2. An insertion groove is formed through the support member in the axial direction, and a part of the pressing member is inserted into the insertion groove so that the insertion part supported by the support surface can be pushed out to the inner diameter side insertion part side. The insertion device according to claim 3, wherein the insertion device is inserted. A center hole is formed in an end face of the inner diameter side inserted component, and a center member engaged with the center hole is supported by the support member so as to be relatively movable in the axial direction, and the center member is interposed between the center member and the support member. A second urging member for urging the member toward the inner diameter side inserted component side is inserted, and the center hole and the axis of the outer peripheral side of the inner diameter side inserted component and the axis of the support surface are coaxial. The insertion device according to claim 4, wherein the center member is disposed coaxially. The insertion device according to claim 5, wherein a third urging member that urges the supporting member and the pressing member in a direction to separate them is inserted. A housing that supports the support member and the pressing member so as to be movable in the axial direction and the rotation direction is disposed on the outer periphery of the pressing member, the cam member is fixed to the inner periphery of the housing, and the movement of the supporting member with respect to the housing A restricting device is disposed between the housing and the support member, and the restricting device rotates the support member in one direction with respect to the housing so that the gripping claw moves in an inner diameter direction by the cam surface. A rotation-direction groove that allows movement, and an axial groove that allows movement of the support member in the axial direction to the opposite side of the inner-diameter-side inserted component with respect to the housing in a state where the gripping claw has moved toward the inner diameter side. The insertion device according to claim 6, further comprising:

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