JP2018039628A - Transport roller and transport unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transport roller which can prevent accumulation of dust, and to provide a transport unit.SOLUTION: A transport roller includes: a base member 20; a rotation member 30 which is housed in the base member 20 and supported so as to rotate around a first axis L1 relative to the base member 20; and a roller body 40 which is disposed within a roller arrangement part 38 provided at the rotation member 30, is supported by the rotation member 30, and may rotate around a second axis L2 intersecting with a virtual axis C eccentrically arranged relative to the first axis L1. A part of an outer peripheral surface 41 of the roller body 40 protrudes further than the base member 20 and the rotation member 30. The roller arrangement part 38 is formed as a through hole 38a penetrating through the rotation member 30 in a direction along the first axis L1.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a transport roller and a transport unit.

Conventionally, many transport rollers having a rotatable roller body are used in a transport unit such as a roller conveyor.
For example, Patent Document 1 describes a free roller used for a transport operation. The free roller described in Patent Document 1 uses a large number of conveying rollers. A large number of transport rollers include a rotation support base that is rotatably supported around a vertical axis on a base, and a roller body (cylindrical roller) can be freely rotated between a pair of brackets protruding from the rotation support base. It is supported.

JP 2012-96892 A

  However, the conventional conveying roller has a configuration that is difficult to be deposited and discharged on the surface of the rotation support table when dust enters between the rotation support table and the roller body. Further, if dust accumulates between the rotation support base and the roller body, the rotation of the roller body may be hindered.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a transport roller and a transport unit that can prevent dust accumulation.

  In order to solve the above-described problems, a transport roller according to the present invention includes a base member, a rotating member that is accommodated in the base member and is rotatably supported around the first axis with respect to the base member, A roller main body disposed in a roller arrangement portion provided in the rotating member, and rotatable around a second axis that is supported by the rotating member and intersects a virtual axis that is eccentric with respect to the first axis; A part of the outer peripheral surface of the roller body protrudes more than the base member and the rotating member, and the roller arrangement portion is a through-hole penetrating the rotating member in a direction along the first axis. It is characterized by becoming.

  According to the present invention, since the roller body is disposed in the roller arrangement portion of the rotating member and the rotating member is accommodated in the base member, the transport roller is configured in a compact and integrated structure while ensuring strength. it can. Further, since the roller arrangement portion is a through hole that penetrates the rotating member in the direction along the first axis, dust that has entered the gap between the roller body and the rotating member can be easily removed to the outside through the through hole. Discharged. Therefore, it can be set as the conveyance roller which can prevent accumulation of dust.

  The rotating member is housed in a housing portion of the base member, and a support portion of the roller body is disposed in the housing portion.

  According to the present invention, since the support portion of the roller body is disposed in the housing portion of the base member, it is possible to prevent the load applied to the rotating member from the roller body from acting on the base member greatly. Therefore, the base member can stably support the roller body.

  Further, the end of the rotating member is provided so as to overlap with the end of the accommodating portion of the base member when viewed from the axial direction of the first shaft.

  According to this invention, the edge part of the accommodating part in a base member and the edge part of a rotation member can be made into what is called a Rabin rinse structure. Thereby, since the intrusion path | route of the dust formed between a base member and a rotation member can be made into a crank shape, it can prevent that a dust invades between base member rotation members.

  The rotating member is supported by the base member via a thrust bearing rotatable around the first axis.

  According to the present invention, since the rotating member is supported by the base member via the thrust bearing that can rotate around the first axis, a large load is supported while preventing intrusion of dust into the thrust bearing. be able to.

  Further, the roller main body is arranged inside the thrust bearing.

  According to the present invention, if the roller main body arranged eccentric with respect to the first shaft is arranged inside the thrust bearing, loads in various directions loaded on the roller main body at the time of use can be stably stabilized by the thrust bearing. Can be supported. Thereby, the conveyance roller can maintain the turning property of the rotating member in a good state in a state where a load is applied during use.

  In addition, an elastic piece that is detachable by elasticity is provided on an outer periphery of the rotating member, and the rotating member is locked to the base member by the elastic piece.

  According to the present invention, since the turning member is locked to the base member by the elastic piece that can be attached and detached by elasticity, the turning member can be attached and detached easily.

  Further, the outer peripheral surface of the roller body has a top outer peripheral surface centering on the second axis.

  According to the present invention, since the outer peripheral surface of the roller body has the top outer peripheral surface with the second axis as the center, a wide contact area between the conveyed object and the roller body that moves in contact with the roller main body is ensured. be able to. Therefore, it is possible to prevent damage such as scratches and dents from occurring on the conveyed object.

  Further, the outer peripheral surface of the roller body has an inclined outer peripheral surface that is inclined from the top outer peripheral surface to the second shaft side on both sides of the top outer peripheral surface.

  According to the present invention, the object to be conveyed is guided by the inclined outer peripheral surface when it moves relative to the roller body and contacts the top outer peripheral surface. Therefore, it is possible to prevent the conveyed object from being caught by the end of the roller main body and to easily rotate the roller main body.

  The rotating member and the base member may have inclined end surfaces that are inclined toward the other end side of the base member from the roller main body side toward the radially outer side on one end side of the rotating member and the base member.

  According to the present invention, the object to be transported is guided to the outer peripheral surface of the roller body by the inclined end surface by contacting the one end side of the rotating member or the base member when moving, so that the rotating member or the base member Can be prevented from being caught on the periphery.

  Further, the outer peripheral surface of the roller body is a curved surface having a predetermined radius of curvature.

  According to the present invention, since the outer peripheral surface of the roller main body is a curved surface, the dust that has entered the gap between the roller main body and the rotating member moves smoothly without being caught on the outer peripheral surface of the roller main body, It is easily discharged to the outside. Therefore, it can be set as the conveyance roller which can prevent accumulation of dust.

  A transport unit according to the present invention includes a plurality of transport rollers according to any one of claims 1 to 9, and a transport surface is formed by the outer peripheral surfaces of the plurality of roller bodies.

  According to the present invention, a plurality of transport rollers as described above are provided, and the transport surface is formed by the outer peripheral surfaces of the plurality of roller bodies, so that the load on the transported object is distributed and the transported object has scratches, dents, etc. It can be transported while preventing damage. Moreover, since the conveyance roller can secure sufficient strength against the load of the object to be conveyed from the side, it is possible to prevent damage to the roller body and the rotating member. In addition, each transport roller can easily discharge dust that has entered between the roller main body and the rotating member to the outside through the through hole, so that dust accumulates inside the rotating member and obstructs rotation of the roller main body. Can be prevented. Therefore, a transport unit having excellent durability can be provided.

  According to the present invention, since the roller body is disposed in the roller arrangement portion of the rotating member and the rotating member is accommodated in the base member, the transport roller is configured in a compact and integrated structure while ensuring strength. it can. Further, since the roller arrangement portion is a through hole that penetrates the rotating member in the direction along the first axis, dust that has entered the gap between the roller body and the rotating member can be easily removed to the outside through the through hole. Discharged. Therefore, it can be set as the conveyance roller which can prevent accumulation of dust.

It is a perspective view of the conveyance roller which concerns on embodiment. It is sectional drawing containing the 2nd axis | shaft of the conveyance roller which concerns on embodiment. It is sectional drawing orthogonal to the 2nd axis | shaft of the conveyance roller which concerns on embodiment. It is a disassembled perspective view of the conveyance roller which concerns on embodiment. It is a perspective view of the conveyance unit which concerns on embodiment. It is sectional drawing containing the 2nd axis | shaft of the conveyance roller which concerns on the modification of embodiment. It is sectional drawing orthogonal to the 2nd axis | shaft of the conveyance roller which concerns on the modification of embodiment.

  Below, the conveyance roller and conveyance unit which concern on embodiment of this invention are demonstrated. In the following, an example of the transport roller will be described, and then an example of a transport unit using the transport roller will be described.

(Conveyance roller)
1 is a perspective view of a transport roller according to the embodiment, FIG. 2 is a cross-sectional view including a second shaft of the transport roller according to the embodiment, and FIG. 3 is a second view of the transport roller according to the embodiment. FIG. 4 is an exploded perspective view of the transport roller according to the embodiment.
As shown in FIGS. 1 to 4, the transport roller 10 includes a base member 20, a rotating member 30 that is rotatably accommodated in the base member 20, and a roller body that is rotatably accommodated in the rotating member 30. 40.

The base member 20 has a substantially cylindrical shape, and includes a housing portion 21 that penetrates in a direction along the first axis L <b> 1 of the rotating member 30.
The accommodating part 21 is a part which accommodates the rotation member 30 and supports it rotatably. A cross-sectional shape orthogonal to the first axis L1 is formed in a circular shape.
A large-diameter hole portion 22 is provided on one end side of the accommodating portion 21, and a concave portion 23 is provided on the other end side. Further, a flange 24 is provided between the large-diameter hole 22 and the recess 23.

The flange portion 24 constitutes a support portion 25 that rotatably supports the rotation member 30 on the large-diameter hole portion 22 side. The support portion 25 of the present embodiment includes a thrust bearing 26 disposed around the first axis L1 between the flange portion 24 and the rotation member 30.
At a plurality of positions on the outer peripheral side of the base member 20, mounting holes 27 penetrating in the direction of the first axis L1 are provided.

  The rotating member 30 is a member that is accommodated in the accommodating portion 21 of the base member 20 and is rotatable around the first axis L1, and includes a large diameter portion 31 on one end side and a small diameter portion 32 on the other end side. ing. The cross-sectional shapes orthogonal to the first axis L1 of the large diameter part 31 and the small diameter part 32 are both formed in a circular shape centered on the first axis L1.

The large-diameter portion 31 of the rotating member 30 is formed so as to be accommodated in the large-diameter hole portion 22 of the base member 20. The side peripheral surface of the large diameter portion 31 is disposed in close proximity to the inner wall surface of the large diameter hole portion 22 of the base member 20.
The inner end portion 31 b of the large-diameter portion 31 of the rotating member 30 is a portion that is supported by the support portion 25 of the base member 20. A thrust bearing 26 is disposed between the inner end portion 31 b of the large diameter portion 31 of the rotating member 30 and the flange portion 24 of the base member 20. Thereby, the rotation member 30 is supported so as to be rotatable with respect to the base member 20.

  The large-diameter portion 31 of the rotating member 30 of the present embodiment is provided with an outer end portion 31 a that is disposed outside the end portion 20 a on the distal end side of the base member 20. The outer end 31 a of the rotating member 30 is larger than the large-diameter hole 22 of the base member 20. As a result, the outer end 31a of the large-diameter portion 31 of the rotating member 30 is provided so as to overlap the end 20a of the accommodating portion 21 of the base member 20 when viewed from the axial direction of the first axis L1. The outer end 31a of the large-diameter portion 31 of the rotating member 30 and the end 20a of the base member 20 have a so-called rabin rinse structure.

The large-diameter portion 31 is provided with a support portion 33 for the roller body 40. In the present embodiment, the support portion 33 includes an accommodation hole 34 provided in the large diameter portion 31 so that one end is closed and the other end is opened, and a shaft body that is accommodated in the accommodation hole 34 and supports the roller body 40. 35 and a sphere 36 accommodated at the other end in a state where the shaft body 35 is accommodated up to one end of the accommodation hole 34. The accommodation hole 34 is provided so as to intersect with a roller arrangement portion 38 where a roller body 40 described later is arranged. The support portion 33 is disposed in the accommodating portion 21 of the base member 20.
As will be described later, the roller body 40 is rotatably disposed around a second axis L2 that intersects a virtual axis C eccentric with respect to the first axis L1. The accommodation hole 34 and the shaft body 35 of the support portion 33 are provided along the second axis L2.

  The small diameter portion 32 is formed in an outer shape that can be accommodated in the inner periphery of the flange portion 24 of the base member 20. The small diameter part 32 is formed in a substantially constant columnar shape along the first axis L1. The small diameter portion 32 is disposed in the recess 23 with the tip of the small diameter portion 32 beyond the flange portion 24 in a state where the large diameter portion 31 is supported by the flange portion 24 via the thrust bearing 26.

  An elastic piece 37 such as a C-ring that can be attached / detached elastically is fitted on the outer periphery of the small-diameter portion 32 of the rotating member 30 accommodated in the recess 23 of the accommodating portion 21 in a state of being fitted in the groove. Thereby, the rotating member 30 is locked in the direction along the first axis L <b> 1 with respect to the flange portion 24 of the base member 20, and is connected to the base member 20.

Inside the rotating member 30, a roller arrangement portion 38 in which the roller main body 40 is arranged is formed. The roller arrangement portion 38 is a through hole 38a that penetrates the rotation member 30 in the direction along the first axis L1. The through hole 38 a is formed in a constant cross-sectional shape over the entire length of the rotating member 30 between the end surface of the large diameter portion 31 and the end surface of the small diameter portion 32.
The through hole 38a is formed in a size and shape that allows the roller body 40 accommodated in the rotating member 30 to rotate within the through hole 38a. The through hole 38a is provided eccentric to the first axis L1 so as to correspond to the roller body 40.

  The end portion 20a on the distal end side of the base member 20 and the outer end portion 31a of the rotating member 30 are inclined toward the other end portion toward the outer sides in the radial direction and the flat surfaces 20b and 31c orthogonal to the first axis L1, respectively. Inclined end surfaces 20c and 31d are provided.

The roller body 40 is rotatably supported by a shaft body 35 of a support portion 33 provided on the rotation member 30. The roller body 40 is rotatable around a second axis L2 that is orthogonal to the virtual axis C that is eccentric with respect to the first axis L1.
The roller body 40 is accommodated in a through hole 38 a provided in the rotating member 30 in the direction along the first axis L1. A part of the outer peripheral surface 41 of the roller body 40 protrudes outward from the base member 20 and the rotating member 30. The roller body 40 is disposed inside the thrust bearing 26 in a state of being eccentric with respect to the first axis L1.
The outer peripheral surface 41 of the roller body 40 is inclined from the top outer peripheral surface 41a to the second axis L2 side on both sides of the top outer peripheral surface 41a and the top outer peripheral surface 41a centering on the second axis L2 in the cross section along the second axis L2. And an inclined outer peripheral surface 41b.

(Transport unit)
FIG. 5 is a perspective view of the transport unit according to the present embodiment.
The transport unit 50 of this embodiment is a member for transporting a transported object W (illustrated by a two-dot chain line in FIG. 5) such as a package, a container, a tray, or the like that contains industrial products. In FIG. 5, each conveyance roller 10 is arrange | positioned in the bending part so that between the some roller conveyors 51a and 51b arrange | positioned in a mutually different direction may be connected. For the reference numerals of the components of the transport roller 10 in the following description, refer to FIGS.

The transport unit 50 of the present embodiment is configured by mounting a plurality of transport rollers 10 as described above on the base 52 in a vertical and horizontal manner.
Each transport roller 10 is arranged at a predetermined position on the base 52 with the roller body 40 protruding from the base member 20 and the rotating member 30 facing upward. Each transport roller 10 is fixed to the base 52 with bolts or the like using the mounting holes 27. A through hole (not shown) that penetrates the base 52 is provided at a position corresponding to the accommodating portion 21 that is provided through the base member 20 of each transport roller 10.
In the transport unit 50, a transport surface on which the article to be transported W is transported is formed by the outer peripheral surface 41 of the roller body 40 set on the base 52.

  In the transport unit 50, first, the object to be transported W is transported from one roller conveyor 51 a to the transport surface of the transport unit 50. The bottom surface of the article to be conveyed W comes into contact with each conveyance roller 10. In each conveyance roller 10, the second axis L2 of the roller body 40 is disposed in a direction intersecting with the virtual axis C that is eccentric with respect to the first axis L1. Therefore, when the article to be conveyed W comes into contact with the roller body 40, the rotation member 30 is rotated so that the rotation direction of the roller body 40 follows the moving direction of the object to be conveyed W.

  After the article to be conveyed W is placed on the conveyance surface of the conveyance unit 50, for example, an operator applies a force in the direction along the other roller conveyor 51b to the object to be conveyed W, so that the other roller conveyor Move towards 51b. The rotating member 30 is rotated by the force in the direction along the other roller conveyor 51b, and the rotation direction of the roller body 40 is directed to the moving direction of the conveyed object W. And the to-be-conveyed object W is mounted on the other roller conveyor 51b, and flows down downstream.

  According to the transport roller of the present embodiment, the roller main body 40 is disposed in the roller placement portion 38 of the rotating member 30 and the rotating member 30 is accommodated in the base member 20, so that the transport is performed while ensuring strength. The roller 10 can be configured in a compact and integrated structure. Further, since the roller arrangement portion 38 is a through hole 38a that penetrates the rotation member 30 in the direction along the first axis L1, dust that has entered the gap between the roller body 40 and the rotation member 30 penetrates. It is easily discharged to the outside through the hole 38a. Therefore, it can be set as the conveyance roller 10 which can prevent accumulation of dust.

  Further, since the support portion 33 of the roller main body 40 is disposed in the accommodating portion 21 of the base member 20, the load applied to the rotating member 30 from the roller main body 40 acts greatly on the base member 20. Can be prevented. Therefore, the base member 20 can stably support the roller body 40.

  Moreover, according to this embodiment, the edge part 20a of the accommodating part 21 in the base member 20 and the outer side edge part 31a of the rotation member 30 can be made into what is called a rabin rinse structure. As a result, the dust intrusion path formed between the base member 20 and the rotating member 30 can be formed into a crank shape, so that dust can be prevented from entering between the base member 20 and the rotating member 30.

  Further, since the rotating member 30 is supported by the base member 20 via the thrust bearing 26 that can rotate around the first axis L1, a large load is supported while preventing the dust from entering the thrust bearing 26. can do.

  Further, if the roller body 40 arranged eccentrically with respect to the first axis L1 is arranged inside the thrust bearing 26, the thrust bearing 26 stabilizes loads in various directions applied to the roller body 40 during use. Can be supported. Thereby, the conveyance roller 10 can maintain the turning property of the turning member 30 in a good state in a state where a load is applied during use.

  Moreover, since the rotation member 30 is latched with respect to the base member 20 by the elastic piece 37 which can be attached or detached by elasticity, the rotation member 30 can be attached or detached easily.

  Further, since the outer peripheral surface 41 of the roller main body 40 has the top outer peripheral surface 41a centering on the second axis L2, the contact area between the conveyed object W that moves in contact with the roller main body 40 and the roller main body 40 is increased. Widely secured. Therefore, it is possible to prevent damage such as scratches and dents from occurring on the conveyed object W.

  Further, when the conveyed object W moves relative to the roller body 40 and comes into contact with the top outer peripheral surface 41a, it is guided by the inclined outer peripheral surface 41b. Therefore, it is possible to prevent the conveyed object W from being caught on the end of the roller body 40 and to easily rotate the roller body 40.

  Moreover, since the conveyed object W is guided to the outer peripheral surface of the roller main body 40 by the inclined end surfaces 20c and 31d by contacting the one end side of the rotation member 30 or the base member 20 when moving, the rotation member 30 and the base member 20 can be prevented from being caught.

  In addition, according to the transport unit 50 of the present embodiment, a plurality of the transport rollers 10 as described above are provided, and the transport surface is formed by the outer peripheral surfaces 41 of the plurality of roller bodies 40. On the other hand, the transported object W can be transported while preventing damage such as scratches and dents. Moreover, since the conveyance roller 10 can ensure sufficient strength with respect to the load of the article W to be conveyed from the side, damage to the roller body 40 and the rotating member 30 can be prevented. Further, since the dust that has entered between the roller main body 40 and the rotating member 30 can be easily discharged from the through hole 38a to the outside by each conveying roller 10, dust accumulates inside the rotating member 30 and the roller main body 40. It is possible to prevent problems such as obstructing the rotation of the. Therefore, the conveyance unit 50 excellent in durability can be provided.

(Conveying roller according to a modification of the embodiment)
FIG. 6 is a cross-sectional view including the second axis of the conveyance roller according to the modification of the embodiment, and FIG. 7 is a cross-sectional view orthogonal to the second axis of the conveyance roller according to the modification of the embodiment. Hereinafter, a conveyance roller according to a modification of the embodiment will be described.
In the transport roller 10 according to the above-described embodiment, the outer peripheral surface 41 of the roller body 40 has a top outer peripheral surface 41a centering on the second axis L2 in the cross section along the second axis L2, and apexes on both sides of the top outer peripheral surface 41a. It had the inclination outer peripheral surface 41b inclined from the outer peripheral surface 41a to the 2nd axis | shaft L2 side (refer FIG. 2).
On the other hand, the outer peripheral surface 41 of the roller main body 40 may be a curved surface like the conveyance roller 10 which concerns on the modification of embodiment shown in FIG. 6 and FIG.

As shown in FIGS. 6 and 7, the transport roller 10 according to the modification of the embodiment has a rotating member 30. Inside the rotating member 30, a roller arrangement portion 38 in which the roller main body 40 is arranged is formed. The roller arrangement portion 38 is a through hole 38a that penetrates the rotation member 30 in the direction along the first axis L1.
The through hole 38a is formed in a size and shape that allows the roller body 40 accommodated in the rotating member 30 to rotate within the through hole 38a. The through hole 38a is provided eccentric to the first axis L1 so as to correspond to the roller body 40.

The roller body 40 is rotatably supported by a shaft body 35 of a support portion 33 provided on the rotation member 30. The roller body 40 is rotatable around a second axis L2 that is orthogonal to the virtual axis C that is eccentric with respect to the first axis L1.
The roller body 40 is accommodated in a through hole 38 a provided in the rotating member 30 in the direction along the first axis L1.
The outer peripheral surface 41 of the roller body 40 is a curved surface having a predetermined radius of curvature with the intersection of the second axis L2 and the virtual axis C as the center. In the present embodiment, the radius of curvature of the outer peripheral surface 41 of the roller body 40 is constant. A part of the outer peripheral surface 41 of the roller body 40 protrudes outward from the base member 20 and the rotating member 30. Note that the radius of curvature of the outer peripheral surface 41 of the roller body 40 may not be constant.

  According to the modification of the embodiment, since the outer peripheral surface 41 of the roller main body 40 is a curved surface, dust that has entered the gap between the roller main body 40 and the rotating member 30 is caught by the outer peripheral surface 41 of the roller main body 40. It moves smoothly without being discharged easily through the through hole 38a. Therefore, it can be set as the conveyance roller 10 which can prevent accumulation of dust.

The present invention is not limited to the above-described embodiments described with reference to the drawings, and various modifications are conceivable within the technical scope thereof.
For example, in the above embodiment, the plurality of transport rollers 10 are attached to the base 52 in a state where the base end side end 20 b of the base member 20 is in contact with the surface of the base 52. However, a recess or a through opening may be provided at a position corresponding to each transport roller 10 on the surface of the base 52, and the base end side of the base member 20 may be embedded in the through opening of the base 52. In that case, the amount of protrusion of the transport roller 10 from the base 52 can be set as appropriate, and by reducing the amount of protrusion, the strength when receiving an impact load or the like from the side during use can be secured.
Further, in the above, the mounting holes 27 penetrating in the axial direction are provided at a plurality of positions on the outer peripheral side of the base member 20, but the mounting flange portion protruding in the radial direction from the outer peripheral side is provided. May be fixed to the base 52.

DESCRIPTION OF SYMBOLS 10 Conveyance roller 20 Base member 20a End part 20c Inclined end surface 21 Accommodating part 25 Support part 26 Thrust bearing 30 Rotating member 31a Outer end part (end part)
31d Inclined end surface 33 Support portion 37 Elastic piece 38 Roller arrangement portion 38a Through hole 40 Roller body 41 Outer peripheral surface 41a Top outer peripheral surface 41b Inclined outer peripheral surface 50 Conveying unit C Virtual axis L1 First axis L2 Second axis

Claims (11)

A base member;
A rotating member housed in the base member and supported to be rotatable about a first axis with respect to the base member;
A roller main body disposed in a roller arrangement portion provided in the rotating member, and rotatable around a second axis that is supported by the rotating member and intersects a virtual axis that is eccentric with respect to the first axis;
With
A part of the outer peripheral surface of the roller body protrudes from the base member and the rotating member,
The conveyance roller, wherein the roller arrangement portion is a through-hole penetrating the rotating member in a direction along the first axis.   The conveying roller according to claim 1, wherein the rotating member is accommodated in an accommodating portion of the base member, and a support portion of the roller main body is disposed in the accommodating portion.   3. The transport according to claim 2, wherein an end portion of the rotating member is provided so as to overlap an end portion of the housing portion of the base member when viewed from an axial direction of the first shaft. roller.   4. The transport roller according to claim 1, wherein the rotating member is supported by the base member via a thrust bearing that is rotatable around the first axis. 5.   The transport roller according to claim 4, wherein the roller main body is disposed inside the thrust bearing. On the outer periphery of the rotating member, an elastic piece that is detachable by elasticity is provided,
The conveyance roller according to claim 1, wherein the rotating member is locked to the base member by the elastic piece.   The conveying roller according to claim 1, wherein an outer peripheral surface of the roller body has a top outer peripheral surface centering on the second axis.   The conveying roller according to claim 7, wherein the outer peripheral surface of the roller body has inclined outer peripheral surfaces that are inclined from the top outer peripheral surface to the second shaft side on both sides of the top outer peripheral surface.   The one end side of the said rotation member and the said base member has an inclined end surface which inclines toward the other end side of the said base member toward the radial direction outer side from the said roller main body side. The conveyance roller of any one of Claims.   The conveying roller according to claim 1, wherein an outer peripheral surface of the roller body is a curved surface having a predetermined radius of curvature. A plurality of transport rollers according to any one of claims 1 to 10,
A conveyance unit, wherein a conveyance surface is formed by the outer peripheral surfaces of the plurality of roller bodies.

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