JP4185301B2 - Rotation transmission body and removal tool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotation transmission body such as a belt pulley and a rotation gear which is attached to a rotation shaft such as a motor and transmits the rotation, and a tool for removing the rotation transmission body.
[0002]
[Prior art]
Key couplings and mechanical lock couplings have been conventionally used as coupling methods for rotating shafts such as motors and rotation transmission bodies such as belt pulleys and rotating gears that transmit the rotation, and each has a characteristic coupling method.
A configuration example of key combination is shown in FIG. In this method, the rotary body 92 is fixed to the rotary shaft 82 by inserting a key 93 from the key hole 921 of the rotary body 92 into the key groove 821 formed in the rotary shaft 82. Cast iron or steel is used as the rotating body material in order to ensure the strength against local stress concentration in the keyway due to rotation.
[0003]
A structural example of mechanical lock coupling is shown in FIG. A rotating body fixing tool including an inner ring 94, an outer ring 95, and a plurality of bolts 96 is inserted between the boss B4 of the rotating body B and the shaft A, and a plurality of bolts 96 interposed between the collar 941 and the outer ring 95 are inserted. And the rotating body B is fixed to the shaft A by pressing the inner ring 94 to the shaft A and the outer ring 95 to the boss B4 by the taper fitting effect between the outer ring 95 and the inner ring 94.
This method is disclosed in Japanese Examined Patent Publication No. 1-1966.
[0004]
[Problems to be solved by the invention]
However, the above coupling method has the following problems.
(Key join problems)
When the shaft diameter of the rotating shaft changes with the change of the motor, it is necessary to change the rotating body itself.
In addition, the variation between the shaft diameter of the rotating shaft and the inner diameter of the rotating body may directly affect the rotation body, and the rotating body may not be sufficiently fixed to the rotating shaft. For this reason, there are restrictions on the material and thickness of the rotating shaft and rotating body for securing the strength of the key coupling portion, which causes an increase in weight.
[0005]
(Problems of mechanical lock coupling)
When the shaft diameter of the rotating shaft changes with the change of the motor, it is necessary to change all the rotating body fixtures composed of the inner ring, the outer ring, and a plurality of bolts.
Moreover, since the number of parts of the rotating body fixture is large, it has been a cause of weight increase.
[0006]
The present invention has been made in view of the above problems in the prior art,
(1) The change of the shaft diameter due to the change of the motor can be handled by changing some parts.
(2) An object of the present invention is to provide a rotation transmission body that can be reduced in weight by increasing the degree of freedom of material selection and reducing the number of parts, and a tool for removing the rotation transmission body.
[0007]
[Means for Solving the Problems]
The rotation transmission body according to the present invention for solving the above-mentioned problems has a rotation shaft having a shaft end, an inner diameter larger than the outer diameter of the shaft end of the rotation shaft, and from one end toward the other end. The rotating body having a hollow portion that forms an inner taper that reduces the inner diameter, and an inner diameter that is substantially the same as the outer diameter of the shaft end of the rotating shaft, and the maximum outer diameter of the rotating body hollow portion A sleeve having an outer surface taper larger than the maximum inner diameter and having a plurality of axial slits provided uniformly on the outer periphery; and a pulley spacer mounted on the shaft end of the rotating shaft, the rotating body comprising: The hollow portion is inserted into the shaft end of the rotating shaft from the end portion with the small inner diameter of the inner surface taper, and the sleeve is inserted between the inner surface taper of the rotating body hollow portion and the shaft end side surface of the rotating shaft. The end surface on the rotating shaft side of the rotating body is inserted through a pulley spacer. Is pressed against the rotating shaft side, the rotary body is fixed to the shaft end of the rotary shaft, the rotation transmitting member for transmitting the rotational movement from the outside to the rotary shaft while transmitting the rotation operation from the rotary shaft to the outside A thread groove for screwing a thread portion of a removal tool for pulling out the sleeve from between the rotating body and the rotation shaft is formed on the inner surface of the end portion on the maximum outer diameter side of the sleeve .
[0008]
According to the present invention, it is possible to cope with a change in the diameter of the rotary shaft due to a change in the motor or the like only by changing the sleeve. In addition, since there is no local stress concentration, the material of the rotating body can be freely selected without being restricted to cast iron or steel, and light alloys such as aluminum alloys are used in consideration of weight reduction and corrosion resistance. You can also Furthermore, the number of parts can be reduced as compared with the mechanical lock coupling method, and the weight can be further reduced.
Here, the rotating body refers to a belt pulley or a rotating gear.
The change of the motor includes, for example, a change according to the destination of the product, and the shaft diameter is different because the standard is different between the IEC motor for Europe and the motor for Japan. Alternatively, such a case may occur even when the user replaces the motor as the product used is improved.
[0009]
And a disc-shaped washer having an outer diameter larger than the inner diameter on the maximum outer diameter side of the sleeve, and a bolt having a crown passing through the center of the disc of the washer and locking the washer. The washer is fixed to the rotating shaft by being screwed into a screw groove provided on the shaft end surface of the rotating shaft, and the sleeve is fitted between the rotating body of the sleeve and the rotating shaft. Can be.
[0010]
According to the present invention, the parts required for fixing are a sleeve, a plate washer, and one bolt, which has a simple structure as compared with the mechanical lock coupling method, and the number of parts can be reduced.
[0011]
The rotation transmission body removal tool of the present invention has a hollow cylindrical shape, and has an opening at one end of the cylinder and a cylindrical bottom at the other end, and the inner diameter of the opening is the outer diameter on the maximum outer diameter side of the sleeve. A cylindrical cover having a larger cover, a threaded portion, and a top of the head, and is rotatably engaged with the center of the cylindrical bottom of the cover, the threaded portion is included in the cover, and the top of the head is A bolt projecting from the bottom of the cylinder, covering the cover opening on the end surface on the maximum outer diameter side of the sleeve, contacting the end surface of the opening to the side surface of the rotating body, and screwing the screw portion of the bolt to the sleeve The sleeve is pulled out from between the rotating body and the rotating shaft by screwing into a thread groove formed on the inner surface.
[0012]
According to the present invention, the sleeve can be easily and reliably pulled out.
In addition, it is good to provide the groove | channel for slipping prevention in the opening part end surface of the cover contact | abutted to a rotary body side surface.
[0013]
The bolt further includes another screw portion whose thread direction is opposite to that of the screw portion, and a screw in a direction opposite to the screw groove formed on the inner surface of the sleeve at the center of the cylindrical bottom portion of the cover. A screw hole having a groove may be formed, and the other screw part may be screwed into the screw groove of the screw hole of the cover so that the top of the head protrudes from the cylindrical bottom of the cover.
[0014]
In the present invention, the jack effect by the combination of the right screw and the left screw is used. That is, since the screw part of the bolt is screwed into the screw groove of the sleeve and the cover is detached from the bolt by another screw part, the end face of the opening of the cover is strongly pressed against the side surface of the rotating body. As a result, the sliding of the end surface of the opening of the cover that contacts the side surface of the rotating body is prevented, and the sleeve can be pulled out easily and reliably.
In addition, what is necessary is just to select arbitrarily the application of the right-hand thread and the left-hand thread to each thread part .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
1. Rotation transmission body Hereinafter, a configuration of an embodiment of a rotation transmission body according to the present invention will be described with reference to the drawings. Here, the case of a belt pulley as a rotating body is shown.
FIG. 1 is a cross-sectional view showing a configuration in a state where a rotation transmission body according to the present invention is attached to a rotation shaft.
FIG. 2 is a cross-sectional view of each component constituting the rotation transmission body according to the present invention.
FIG. 3 is a perspective view showing a configuration when the rotation transmitting body according to the present invention is attached to the rotation shaft.
[0016]
(1) Structure of rotation transmission body (components)
As shown in FIG. 1, a rotation transmission body 1 according to the present invention includes a pulley 12 that is a cylindrical rotating body having an inner peripheral surface taper, a cylindrical sleeve 14 having an outer peripheral surface taper, and a disk-shaped pulley washer. 161 and a hexagon socket head bolt 162, and a hollow disk-like pulley spacer 18.
(Position relationship with the rotation axis)
The pulley 12 and the sleeve 14 are sequentially mounted in the outer diameter direction around the shaft end 52a so as to surround the shaft end 52a of the rotary shaft 52, and the mounting tool 16 attaches the sleeve 14 to the pulley 12 and the shaft end 52a. The pulley 12 is fixed to the shaft end 52a by being inserted in between.
At this time, the inner peripheral surface taper of the pulley 12 and the outer peripheral surface taper of the sleeve 14 come into contact with each other, and the outer peripheral surface of the pulley 12 and the inner peripheral surface of the sleeve 14 are parallel to the outer peripheral surface of the shaft end 52 a of the rotating shaft 52. It is fixed in a relation (taper coupling).
[0017]
(2) Structure of each part The structure of each part will be described with reference to FIGS.
(I) Rotating shaft 52 (FIG. 2 (a))
The rotary shaft 52 has a shaft end 52a having an outer diameter a to which the pulley 12 is fixed, and a screw hole 52b having a thread groove is provided in the axial center of the end surface of the shaft end 52a.
[0018]
(Ii) Pulley spacer 18 (FIG. 2B)
The pulley spacer 18 has a disk shape, and has a hollow portion having an inner diameter substantially the same as the outer diameter a of the shaft end 52a at the center of the disk.
[0019]
(Iii) Pulley 12 (FIG. 2 (c))
The pulley 12 has a cylindrical shape and has a hollow portion that serves as a center of rotation of the pulley 12. Both inner diameters of the pulley 12 have inner diameters b and c that are larger than the outer diameter a of the shaft end 52a. Furthermore, the inner peripheral surface 12a of the hollow portion has a taper, and the inner diameter of the hollow portion decreases from the end of the shaft end 52a toward the inside thereof.
The outer peripheral surface 12b is a plane parallel to the center of the hollow portion, that is, the shaft center of the shaft end 52a, and a groove for gripping the belt for transmitting rotational power is formed in a direction perpendicular to the circumference.
[0020]
(Iv) Sleeve 14 (FIG. 2 (d))
The sleeve 14 has a cylindrical shape and has a hollow portion serving as a center of rotation of the sleeve 14, and the inner peripheral surface 14 a of the hollow portion is a plane parallel to the center of the hollow portion, that is, the axis of the shaft end 52 a. The inner diameter is substantially the same as the outer diameter a of the shaft end 52a.
The outer peripheral surface 14b has a taper, and the outer diameter decreases from the end of the shaft end 52a toward the inside thereof at the same taper angle as the inner peripheral surface taper of the pulley 12 hollow portion. Further, the minimum diameter d is smaller than the maximum inner diameter c of the pulley 12 hollow portion, and the maximum diameter e is larger than the maximum inner diameter c of the pulley 12 hollow portion.
Further, a thread groove 14c is provided on the inner peripheral surface of the sleeve 14 on the maximum outer diameter side (the outer diameter e side) up to a predetermined distance from the end surface.
Further, a plurality of axial slits 14 s are provided uniformly on the outer circumference of the cylinder on the minimum outer diameter side (the outer diameter d side) of the sleeve 14. The length of the slit 14s is a length that does not reach the screw groove 14c.
[0021]
(V) Installation tool 16 (FIG. 1)
The mounting tool 16 includes a disk-shaped pulley washer 161 and a hexagon socket head bolt 162 that passes through the center of the disk of the pulley washer 161 so as to be rotatable by a screw. The pulley washer 161 may be provided with a cylindrical projection having an outer diameter substantially the same as the inner diameter of the sleeve 14 on the maximum outer diameter e side. This protrusion facilitates mounting on the sleeve 14. Furthermore, the hexagon socket head bolt 162 is composed of a screw portion 162a and a top portion 162b having a hexagonal hole.
[0022]
(3) Attachment method The attachment method of the rotation transmission body of this invention is demonstrated using FIG.
(I) The pulley spacer 18, the pulley 12, and the sleeve 14 are inserted in this order in accordance with the center of the shaft end 52 a so as to surround the shaft end 52 a of the rotating shaft 52. At this time, the pulley 12 is inserted in the taper direction of the inner peripheral surface 12a so that the inner diameter of the hollow portion decreases from the end of the shaft end 52a toward the inside thereof. The sleeve 14 is inserted in the taper direction of the outer peripheral surface 14b so that the outer diameter decreases from the end of the shaft end 52a toward the inner direction.
The sleeve 14 is inserted between the pulley 12 and the shaft end 52a, and the pulley 12 is not fixed to the shaft end 52a.
[0023]
(Ii) As the attachment tool 16, the pulley washer 161 and the bolt 162 are attached in this order from the end surface on the maximum diameter side of the sleeve 14. The pulley washer 161 is mounted with its cylindrical protrusion facing the sleeve 14.
[0024]
(Iii) The bolt 162 is screwed into a screw groove provided in the shaft center of the end surface of the shaft end 52a of the rotary shaft 52, and the pulley 12 is fixed to the shaft end 52a.
[0025]
(Function and effect)
The following effects can be obtained by screwing the bolt 162 of the attachment tool 16 into a screw groove provided in the shaft center of the shaft end 52a of the rotary shaft 52.
(I) The top 162b of the bolt 162 biases the pulley washer 161 toward the rotary shaft 52.
(Ii) The urged pulley washer 161 pushes the sleeve 14 inwardly from the end surface of the shaft end 52 a of the rotating shaft 52 on the plate surface contacting the cylindrical end surface of the sleeve 14.
(Iii) The pushed-in sleeve 14 is inserted by sliding between the inner peripheral surface 12a of the pulley 12 and the outer peripheral surface of the shaft end 52a, and the spring effect of the slit 14s works and the inner peripheral surface 12a of the pulley 12 It is inserted between the outer peripheral surface of the shaft end 52a. Thus, the inner peripheral surface 14a of the sleeve 14 is on the outer peripheral surface of the shaft end 52a, the outer peripheral surface 14b of the sleeve 14 is on the inner peripheral surface 12a of the pulley 12, and the end surface on the rotating shaft 52 side of the pulley 12 is interposed via the pulley spacer 18. The pulley 12 is fixed to the shaft end 52a by being pressed against the side surfaces of the rotation shaft 52.
[0026]
2. Removal Tool Next, a configuration of an embodiment of a rotation transmission body removal tool according to the present invention will be described with reference to the drawings.
FIG. 4 is a cross-sectional view showing a configuration of an embodiment of a rotation transmission body removal tool according to the present invention.
FIG. 5 is a cross-sectional view showing the configuration of another embodiment of the tool for removing a rotation transmitting body according to the present invention.
[0027]
(1) Removal tool 1
(A) Configuration As shown in FIG. 4, the removal tool 20 includes a cylindrical hollow extraction cover 24 and a columnar extraction bolt 22 having a screw portion 22 a and a crown portion 22 b.
[0028]
(I) Extraction cover 24
The cover 24 has an opening 241 at one end of the cylinder and a cylindrical bottom 242 at the other end. The inner diameter of the opening 241 is larger than the outer diameter on the maximum outer diameter side of the sleeve 14. A center hole 24 a is formed in 242.
Further, an anti-skid groove is formed on the end surface 24b of the opening 241 that contacts the side end surface 12c of the pulley 12 when the rotation transmission body 1 is detached. This groove may be provided in the side end surface 12 c of the pulley 12.
[0029]
(Ii) Extraction bolt 22
The bolt 22 passes through a central hole 24a provided in the cylindrical bottom 242 of the extraction cover 24, and is engaged with the hole 24a so as to be screw-rotatable. At both ends of the bolt 22, a screw portion 22 a is formed on one side and a top portion 22 b is formed on the other side. The screw portion 22 a is included in the extraction cover 24, and the top portion 22 b extends from the cylindrical bottom portion 242 of the cover 24. It protrudes.
The screw portion 22a is formed with a screw thread corresponding to the screw groove 14c provided on the inner peripheral surface of the sleeve 14.
[0030]
(B) Removal method (Fig. 4)
Removal using the removal tool 1 is performed as follows. In addition, among the rotation transmission bodies 1 in FIG. 1, the attachment tool 16 is used in a removed state.
(I) The opening 241 of the extraction cover 24 of the removal tool 1 is put on the end surface on the maximum outer diameter side of the sleeve 14.
(Ii) The screw portion 22a of the extraction bolt 22 is screwed into the screw groove 14c provided on the inner peripheral surface of the sleeve 14 by rotating the crown portion 22b. This screwing can be done manually.
(Iii) With the above screwing, the extraction cover 24 also advances inward from the end of the shaft end 52a, and the end surface 24b of the opening 241 contacts the side end surface 12c of the pulley 12 (FIG. 4B).
(Iv) Since the end surface 24b of the opening 241 is gripped by the side end surface 12c of the pulley 12, the sleeve 14 is pulled out from the end of the shaft end 52a toward the outer side as the screw portion 22a is screwed into the screw groove 14c. Power works.
(V) The sleeve 14 is disengaged between the inner peripheral surface 12a of the pulley 12 and the outer peripheral surface of the shaft end 52a, so that the rotation transmitting body 1 can be removed.
[0031]
(2) Removal tool 2
(A) Configuration As shown in FIG. 5, the removal tool 30 is a cylindrical hollow cover having an extraction cover 34, a screw portion 32 a similar to the screw portion 22 a , another screw portion 32 c, and a top portion 32 b. It consists of a shape extraction bolt 32.
[0032]
(I) Extraction cover 34
The cover 34 has an opening 341 at one end of the cylinder and a cylindrical bottom 342 at the other end. The inner diameter of the opening 341 is larger than the outer diameter on the maximum outer diameter side of the sleeve 14. A screw hole 34 a is formed at the center of 342. The thread groove is opposite to the thread groove 14 c provided on the inner peripheral surface of the sleeve 14.
Further, with respect to the opening 341 of the cover 34, a sufficient grip force can be obtained between the cover 12 and the pulley 12 without special processing on the end surface 34 b that contacts the side end surface 12 c of the pulley 12 when the rotation transmission body 1 is removed. However, if the anti-slip groove is formed, the grip force may be further increased. This groove may be provided in the side end surface 12 c of the pulley 12.
[0033]
(Ii) Extraction bolt 32
At both ends of the bolt 32, a screw part 32a is formed on one side and a top part 32b is formed on the other side, and another screw part 32c is provided between them. Moreover, the thread of the thread part 32a and the other thread part 32c is formed so that it may become a mutually reverse direction. When the bolt 32 is to be removed, the bolt 32 passes through the cylindrical bottom portion 342 of the extraction cover 34 with the other screw portion 32c screwed into the screw hole 34a of the extraction cover 34 and screwed. The portion 32 a is included in the extraction cover 34, and the crown portion 32 b protrudes from the cylindrical bottom portion 342 of the cover 34 .
Further, the thread portion 32 a is formed with a thread corresponding to the thread groove 14 c provided on the inner peripheral surface of the sleeve 14.
[0034]
(B) Removal method (Fig. 5)
Removal using the removal tool 2 is performed as follows. In addition, among the rotation transmission bodies 1 in FIG. 1, the attachment tool 16 is used in a removed state.
(I) The opening 341 of the extraction cover 34 of the removal tool 2 is put on the end surface on the maximum outer diameter side of the sleeve 14.
(Ii) The screw portion 32a of the extraction bolt 32 is screwed into the screw groove 14c provided on the inner peripheral surface of the sleeve 14 by rotating the head top portion 32b. This screwing can be done manually.
(Iii) With the above screwing, the extraction cover 34 also advances inward from the end of the shaft end 52a, and the end face 34b of the opening 341 contacts the side end face 12c of the pulley 12 (FIG. 5B).
(Iv) When the threaded portion 32a is further screwed into the thread groove 14c while the end surface 34b of the opening 341 is gripped by the side end surface 12c of the pulley 12, the other threaded portion 32c rotates in the direction in which the threaded hole 34a is removed. Therefore, the force that is pressed against the pulley 12 side acts on the extraction cover 34. Due to the pressing force, the end surface 34b of the opening 341 is further gripped by the side end surface 12c of the pulley 12, and the screw portion 32a can be screwed into the screw groove 14c more stably.
(V) As the screw portion 32a is screwed into the screw groove 14c, a force to pull the sleeve 14 outward from the end of the shaft end 52a is applied.
(Vi) The sleeve 14 is disengaged between the inner peripheral surface 12a of the pulley 12 and the outer peripheral surface of the shaft end 52a, so that the rotation transmitting body 1 can be removed.
[0035]
(Example)
Examples in which the present invention is applied to a drill unit will be described below.
FIG. 6 is a cross-sectional view of a drill unit that is an embodiment of the rotation transmission body according to the present invention.
The rotation transmission body 10 according to the present invention is fixed to the rotation shaft of the body 110 of the drill, and the rotation transmission body 60 according to the present invention is fixed to the rotation shaft of the motor 120 which is a power source. Power is transmitted to the pulley of the rotation transmission body 10 and the pulley of the rotation transmission body 60 via a belt 80.
With the rotation transmission bodies 10 and 60 according to the present invention, the respective pulleys can be easily fixed to the rotation shafts of the body 110 and the motor 120.
In addition, even if the shaft diameter of the rotating shaft changes due to the change to a different standard product, the rotation transmission bodies 10 and 60 can be easily removed with a removal tool, and it is possible to deal with a different standard product by simply replacing the sleeve. Can now also.
Furthermore, since it is fastening by taper coupling, it can be coupled with a uniform surface pressure, so it is possible to apply an aluminum alloy to the pulley and achieve weight reduction.
[0036]
【The invention's effect】
According to the present invention, it is possible to cope with a change in the diameter of the rotary shaft due to a change in the motor or the like only by changing the sleeve. In addition, since there is no local stress concentration, the material of the rotating body can be freely selected without being restricted to cast iron or steel, and light alloys such as aluminum alloys are used in consideration of weight reduction and corrosion resistance. You can also Furthermore, the number of parts can be reduced as compared with the mechanical lock coupling method, and the weight can be further reduced.
According to the present invention, the parts required for fixing are a sleeve, a plate washer, and one bolt, which has a simple structure as compared with the mechanical lock coupling method, and the number of parts can be reduced.
[0037]
The removal tool of the present invention allows the sleeve to be pulled out easily and reliably.
Furthermore, according to the removal tool of the present invention, by utilizing the jack effect by the combination of the right screw and the left screw, the screw portion of the bolt is screwed into the screw groove of the sleeve, and at the same time, the cover is covered by the other screw portion. Accordingly, the end surface of the opening of the cover is strongly pressed against the side surface of the rotating body. As a result, the sliding of the end surface of the opening of the cover that contacts the side surface of the rotating body is prevented, and the sleeve can be pulled out easily and reliably.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration in a state where a rotation transmission body according to the present invention is attached to a rotation shaft.
FIG. 2 is a cross-sectional view of each component constituting the rotation transmission body according to the present invention.
FIG. 3 is a perspective view showing a configuration when a rotation transmission body according to the present invention is attached to a rotation shaft.
FIG. 4 is a cross-sectional view showing the configuration of an embodiment of a rotation transmission body removal tool according to the present invention.
FIG. 5 is a cross-sectional view showing a configuration of another embodiment of a tool for removing a rotation transmitting body according to the present invention.
FIG. 6 is a cross-sectional view of a drill unit that is an embodiment of a rotation transmission body according to the present invention.
FIG. 7 is a cross-sectional view showing key coupling in a configuration example of a conventional rotation transmission body.
FIG. 8 is a cross-sectional view showing mechanical lock coupling in a configuration example of a conventional rotation transmission body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 10, 60 ... Rotation transmission body 12 ... Pulley 12a, 14a ... Inner peripheral surface 12b, 14b ... Outer peripheral surface 12c ... Side end surface 14 ... Sleeve 14c ... Screw groove 14s ... Slit 16 ... Installation tool 161 ... Pulley washer 162 ... Hexagon Bolts with holes 162a ... Screw parts 162b ... Head part 18 ... Pulley spacers 20, 30 ... Removal tools 22, 32 ... Extraction bolts 22a ... Screw parts 32a ... Screw parts 32c ... Other screw parts 22b and 32b ... Head parts 24, 34 ... Extraction covers 241, 341 ... Openings 242, 342 ... Cylindrical bottom 24a ... Center holes 24b, 34b ... Opening end face 34a ... Screw hole 52 ... Rotating shaft 52a ... Shaft end 52b ... Screw hole 80 ... Belt 82 ... Rotation Shaft 821 ... Key groove 92 ... Rotating body 921 ... Key hole 3 ... key 94 ... inner ring 941 ... flange 95 ... outer ring 100 ... drill unit 110 ... Body 120 ... motor A ... axis B ... rotator B4 ... Boss

Claims (4)

A rotating shaft with a shaft end;
A rotating body having an inner diameter that is larger than the outer diameter of the shaft end of the rotating shaft, and a hollow portion that forms an inner taper that decreases from the one end toward the other end;
The rotating shaft has an inner diameter that is substantially the same as the outer diameter of the shaft end, and has an outer surface taper in which the maximum outer diameter is larger than the maximum inner diameter of the rotating body hollow portion, and a plurality of axial slits are provided. A sleeve evenly provided on the outer periphery;
A pulley spacer attached to the shaft end of the rotating shaft;
With
The rotating body is inserted into the shaft end of the rotating shaft from an end portion where the inner diameter taper of the hollow portion is small, and the sleeve is interposed between the inner surface taper of the rotating body hollow portion and the shaft end side surface of the rotating shaft. The rotating shaft side end face of the rotating body is inserted into pressure contact with the side surface of the rotating shaft via a pulley spacer, the rotating body is fixed to the shaft end of the rotating shaft, and the rotating operation from the rotating shaft is transmitted to the outside. In the rotation transmission body that transmits the rotation operation from the outside to the rotation shaft ,
A rotation transmitting body, wherein a thread groove for screwing a thread portion of a removal tool for pulling out the sleeve from between the rotating body and a rotating shaft is formed on the inner surface of the end portion on the maximum outer diameter side of the sleeve. A disc-shaped washer having an outer diameter larger than the inner diameter on the maximum outer diameter side of the sleeve;
A bolt having a crown passing through the disc center of the washer and locking the washer;
The washer is fixed to the rotating shaft by screwing the bolt into a screw groove provided at the shaft end face of the rotating shaft, and the sleeve is fitted between the rotating body and the rotating shaft of the sleeve. The rotation transmission body according to claim 1, wherein: In the rotation transmission body fixed to the rotation shaft, transmitting the rotation operation from the rotation shaft to the outside and transmitting the rotation operation from the outside to the rotation shaft,
The rotating shaft has a shaft end;
A rotating body having an inner diameter that is larger than the outer diameter of the shaft end of the rotating shaft, and a hollow portion that forms an inner taper that decreases from the one end toward the other end;
The rotating shaft has an inner diameter that is substantially the same as the outer diameter of the shaft end, and has an outer surface taper in which the maximum outer diameter is larger than the maximum inner diameter of the rotating body hollow portion, and a plurality of axial slits are provided. A sleeve evenly provided on the outer periphery;
A pulley spacer attached to the shaft end of the rotating shaft;
With
The rotating body is inserted into the shaft end of the rotating shaft from an end portion where the inner diameter taper of the hollow portion is small, and the sleeve is interposed between the inner surface taper of the rotating body hollow portion and the shaft end side surface of the rotating shaft. A rotation transmission body removal tool that is inserted and the end surface of the rotating body on the rotating shaft side is pressed against the side surface of the rotating shaft via a pulley spacer, and the rotating body is fixed to the shaft end of the rotating shaft ,
A hollow cylindrical shape having an opening at one end of the cylinder and a cylindrical bottom at the other end, the cover having an inner diameter that is larger than the outer diameter on the maximum outer diameter side of the sleeve;
A cylindrical shape having a screw portion and a top portion, and rotatably engaged with the center of the cylindrical bottom portion of the cover. The screw portion is included in the cover, and the top portion protrudes from the cylindrical bottom portion of the cover. Consisting of bolts,
By covering the cover opening on the end surface on the maximum outer diameter side of the sleeve, bringing the end surface of the opening into contact with the side surface of the rotating body, and screwing the screw portion of the bolt into the screw groove formed on the inner surface of the sleeve A tool for removing the rotation transmitting body, wherein the sleeve is pulled out from between the rotating body and the rotating shaft.   The bolt includes another thread portion whose thread direction is opposite to the thread portion, and a thread groove in a direction opposite to the thread groove formed on the inner surface of the sleeve at the center of the cylindrical bottom portion of the cover. 4. The rotation transmission body according to claim 3, wherein a screw hole is formed, and the other screw part is screwed into a screw groove of the screw hole of the cover so that the top of the screw protrudes from the cylindrical bottom part of the cover. Removal tool.

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