JP4007695B2 - Cam follower with roller - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a pair of support walls arranged in parallel so as to sandwich the roller between them is formed integrally with the cam follower body, and a roller shaft for rotatably supporting the roller in a through hole formed in each of the support walls. The present invention relates to a cam follower with a roller that supports the outer periphery of both ends.
[0002]
[Prior art]
The cam follower with a roller is designed to enhance the slidability and followability of the cam follower with respect to the cam by a roller in contact with the cam, and has been widely used in a valve operating apparatus for an internal combustion engine.
[0003]
By the way, in the conventional cam follower with a roller, as a method of fixing a roller shaft, for example, as shown in Japanese Patent Application Laid-Open No. 5-321999, the both end surfaces of the shaft are squeezed with a squeezing punch, or As shown in Japanese Utility Model Laid-Open No. 57-98350, a bolt-shaped roller shaft is used, and its shaft end is fastened and fixed by a nut outside a support wall.
[0004]
[Problems to be solved by the invention]
However, the fixing by caulking has a problem that the caulking processing equipment is specially required and the cost is increased. In particular, when a hollow roller shaft is used, the roller shaft is likely to be deformed or distorted due to caulking. For this reason, the roller rolling surface may become unsmooth, and there may be inconveniences such as the roller being unable to rotate smoothly on the rolling surface.
[0005]
On the other hand, the fixing with the bolts and nuts has a problem that the heads and nuts of the bolts protrude from the outer surface of the support wall, and the width of the cam follower (the maximum dimension in the direction along the roller shaft) becomes larger than necessary.
[0006]
The present invention has been made in view of such circumstances, and an object thereof is to provide a cam follower with a roller that can solve the above-described problems and disadvantages of conventional ones.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is characterized in that a pair of support walls arranged in parallel so as to sandwich the roller therebetween are formed integrally with the cam follower body, and the through holes formed in the both support walls respectively. In a cam follower with a roller, in which the outer periphery of both ends of a roller shaft that rotatably supports the roller is fitted and supported, a C-shape extending along the circumferential direction is formed on the inner peripheral surface of the through hole of one support wall. And a second C-shaped groove corresponding to the first groove is formed on the outer peripheral surface of one end of the roller shaft, and is formed between the first and second grooves. The C-shaped hollow portion is attached with a C-shaped elastic stopper whose lengthwise both ends can be engaged across the inner surfaces of the first and second grooves, and the roller shaft and the support wall It is characterized by preventing relative movement and relative rotation in the axial direction. According to this feature, the C-shaped elastic stopper disposed between the fitting surfaces of the roller shaft and the support wall through hole (the C-shaped hollow portion) is relatively slid in the axial direction with respect to the support wall through hole of the roller shaft. Therefore, the roller shaft can be easily fixed to the support wall without using any special caulking equipment, and the roller shaft is fixed to the outer surface of the support wall. Therefore, the cam follower can be reduced in width.
[0008]
The invention of claim 2 is characterized in that, in addition to the features of the invention of claim 1, the roller shaft is formed hollow, thereby reducing the weight of the roller shaft and thus the cam follower (reducing the inertial mass). ) Is planned. Even if the roller shaft is hollow in this way, there is no risk of deformation or distortion of the roller shaft as in the case of caulking, so that the roller rolling surface is formed smoothly, The roller can always rotate smoothly.
[0009]
Further, the invention of claim 3 is characterized in that, in addition to the features of the invention of claim 1 or 2, both end surfaces in the length direction of the stopper are respectively formed as flat surfaces, while both the inside of the hollow portion facing each other are formed. The end surfaces are formed on flat surfaces parallel to both end surfaces of the stopper. According to this feature, the end face in the length direction of the stopper and the inner end face of the hollow portion facing the flat face are parallel to each other, and can be brought into surface contact with each other with a relatively wide contact area. In addition, a sufficient anti-rotation effect is exerted by accurately engaging each other, and the contact surface pressure between them is reduced, so that the contact portions (that is, the end surfaces of the stopper, the first and second grooves) The wear of the inner end face is reduced.
[0010]
Furthermore, the invention of claim 4 is characterized in that, in addition to the features of the invention of claim 1, 2, or 3, the cross-sectional shape of both ends in the radial direction of the elastic stopper is transverse to the bottom of the corresponding first and second grooves. Each of the surface shapes is the same, and both side surfaces of the elastic stopper and both inner side surfaces of the corresponding grooves are formed flat and are in surface contact with each other. According to this feature, since both ends in the radial direction of the elastic stopper can contact with the corresponding groove bottom portions, they can be in close contact with a wide contact area, so that the contact surface pressure can be reduced and wear of the contact surface can be prevented. It is effective and can prevent the elastic stopper from rattling. In addition, since both side surfaces of the elastic stopper and both inner side surfaces of each groove can be engaged with each other with a wide contact area, the engagement is performed accurately and the axial movement of the roller shaft is reliably prevented.
[0011]
In addition to the features of the invention of claim 1, 2, 3 or 4, the invention of claim 5 is characterized in that the radial width of the elastic stopper is equal to or smaller than the groove depth of the second groove. In addition, the depth is set to be greater than the depth of the first groove. Thereby, if one end of the roller shaft is inserted into the through hole of one support wall in a temporarily assembled state in which the elastic stopper is elastically contracted and deformed in the radial direction and submerged in the second groove of the roller shaft, When the elastic stopper comes to a position corresponding to the first groove, the elastic stopper is expanded and deformed to the first groove side by its own elastic restoring force, and automatically moves to the proper assembly position. Therefore, the elastic stopper can be easily assembled by simply pushing the roller shaft into the through hole of the support wall while maintaining the temporarily assembled state.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below based on the embodiments of the present invention illustrated in the accompanying drawings.
[0013]
In the accompanying drawings, FIG. 1 is a cross-sectional view of a principal part showing an example of a valve gear for an internal combustion engine incorporating a roller-equipped cam follower according to a first embodiment, and FIG. 2 is an enlarged cross-sectional view taken along line 2-2 of FIG. 3 is a sectional view taken along line 3-3 in FIG. 2 and a partially enlarged view thereof, FIG. 4 is an exploded perspective view of the cam follower with roller according to the first embodiment, and FIG. 5 is a simplified process of forming the first groove in the cam follower body. FIG. 6 is a view corresponding to FIG. 2 showing the cam follower with roller according to the second embodiment and a partially enlarged view thereof, and FIG. 7 is a view showing the cam follower with roller according to the third embodiment. 2 is a corresponding diagram and a partially enlarged view thereof.
[0014]
First, a first embodiment in which the cam follower with roller of the present invention is implemented in a valve operating device of a four-cycle internal combustion engine will be described with reference to FIGS.
[0015]
In FIG. 1, a rocker arm body 2 of a rocker arm 1 as a cam follower has a shaft hole 2 a formed in an intermediate portion in the longitudinal direction, and a rocker shaft 3 fixed to an engine body E of an internal combustion engine is formed in the shaft hole 2 a. It penetrates through relative rotation. An adjustment bolt 4 is screwed into the base of the rocker arm main body 2, and the screwed position is fixed by a lock nut 5. An upper end of an engine valve V (for example, an intake valve or an exhaust valve) supported by the engine body E so as to be vertically slidable is in contact with the lower end of the adjustment bolt 4. The valve is always urged in the valve closing direction (direction in contact with the adjusting bolt 4) by the generated force.
[0016]
A roller R is rotatably attached to the tip of the rocker arm body 2 via a roller shaft 7. The outer peripheral surface of the roller R is in pressure contact with a valve cam C as a cam based on the elastic force of the valve spring 6, and the valve cam C is supported by the engine body E and is a crankshaft (not shown). 1) is integrally formed on the outer periphery of the valve camshaft 8 that rotates together. Thus, when the valve cam C rotates, the rocker arm main body 2 that contacts the cam C via the roller R swings up and down around the rocker shaft 3 so that the engine valve V can be opened and closed.
[0017]
Next, the mounting structure of the roller R and the roller shaft 7 will be specifically described with reference to FIGS. A fork-shaped roller holding portion H having first and second support walls Wa and Wb that are arranged in parallel at an interval so as to sandwich the roller R therebetween is integrally formed at the tip of the rocker arm body 2. The support walls Wa and Wb are formed with through holes 9a and 9b on the same axis, and the outer circumferences of both ends in the axial direction of the roller shaft 7 are fitted in the through holes 9a and 9b, respectively. Supported.
[0018]
The roller shaft 7 is formed in a hollow cylindrical shape having both ends open and having the same diameter over the entire length, and the inner periphery of the roller R is arranged on the outer periphery of the longitudinal center portion 7m. N is rotatably supported through N. Further, both outer end surfaces of the roller shaft 7 are formed so as not to protrude from both outer surfaces of both support walls Wa and Wb (particularly, in the illustrated example, they are flush with both outer surfaces). On the other hand, the through holes 9a and 9b of the respective support walls Wa and Wb are formed as arc holes having the same inner diameter over the entire width, and the inner diameter is set to be substantially the same as the outer diameter of the roller shaft 7, The two ends 7a and 7b are closely fitted (that is, slidable but not loose).
[0019]
(In the illustrated example the second support wall Wb) one support wall in the through hole 9b in the circumferential surface of the first groove g ₁ of C-shaped cross section extending in the circumferential direction is formed. The roller shaft 7, the outer peripheral surface of the end portion 7b corresponding to the second support wall Wb, C-shaped cross section of the second groove g ₂ extending in a circumferential direction corresponding to the first groove g ₁ is formed Is done. Thus, a C-shaped hollow portion G is formed between the first and second grooves g ₁ and g ₂ between the fitting surfaces of the through hole 9b and the one end portion 7b of the roller shaft 7. A metal circlip L formed in a C shape substantially the same shape as the hollow portion G is mounted there, and this circlip L constitutes the elastic stopper of the present invention.
[0020]
In the set state in the hollow portion G, the circlip L has one end surface in the length direction straddling the inner surface of one end portion of the grooves g ₁ and g ₂ , and the other end surface is the both grooves g _1. , G _{2 so} as to straddle the inner surface of the other end portion to prevent relative rotation between the roller shaft 7 and the supporting walls Wa and Wb, and one side surface of the circlip L is The other side faces the inner surface of the other side part of the grooves g ₁ and g ₂ so as to straddle the inner surface of the one side part of the grooves g ₁ and g _{2 over} the entire circumference. As described above, the roller shaft 7 and the supporting walls Wa and Wb can be prevented from moving in the axial direction by contacting each other.
[0021]
Further, as clearly shown in FIG. 3, both end faces Lf of the circlip L are formed flat on the whole surface, while both inner end faces Gf (that is, the first and second grooves g) of the hollow portion G facing them are formed. Both inner end surfaces ₁ and g ₂ are formed on flat surfaces parallel to both end surfaces Lf of the circlip L, respectively. In this embodiment, the flat end surface Lf of the circlip L (and thus the flat inner end surface Gf of the hollow portion G) is on a virtual plane D extending radially from the axis O of the roller shaft 7 toward the end of the circlip L. It is formed along. Thus, each end face Lf of the circlip L and each inner end face Gf of the hollow portion G facing in parallel with each other can be brought into surface contact with a relatively wide contact area. In combination, a sufficient anti-rotation effect is exhibited, the contact surface pressure between them is reduced, and wear of the contact portions (that is, the circlip end surface Lf and the inner end surface Gf of the hollow portion G) is reduced. .
[0022]
Moreover, each inner end face Gf of the hollow part G extends longer to the outer side in the radial direction than the outer peripheral side edge part Lfe of the end face Lf of the circlip L facing the hollow part G, and the extended end is formed in the first groove. It smoothly continues to the edge of the arc groove r formed by being recessed in the bottom of the end of g ₁ .
[0023]
Circlip L is also in its free state, the outside diameter of the roller shaft 7 (therefore through-hole 9a, the inner diameter of 9b) is formed to have a larger diameter than, the first groove g ₁ having an inner diameter, thus The outer peripheral surface of the circlip L is pressed against the inner bottom surface of the first groove g ₁ based on the elastic restoring force of the circlip L itself in the set state in the hollow portion G. Further, the second groove g ₂ of the roller shaft 7 is inserted until the circlip L fitted therein is immersed in the second groove g ₂ (that is, the outer diameter of the circlip L is equal to or smaller than the outer diameter of the roller shaft 7). The groove depth is set so that the first jig (not shown) can be forcibly elastically shrunk and deformed. Thus, when the radial width of the circlip L is t, the groove depth of the first groove g ₁ is d ₁ , and the groove depth of the second groove g ₂ is d ₂ , d ₁ <t ≦ d ₂ The circlip L and the grooves g ₁ and g ₂ are formed so that It should be noted that between the both ends of the circlip L and the inner ends of the C-shaped hollow portion G, the clip can be easily allowed to be elastically deformed in the radial direction when the circlip L is assembled. Some play is set in the circumferential direction.
[0024]
In manufacturing the rocker arm 1 having the above structure, first, the rocker arm main body 2 is manufactured, and then the first groove g ₁ is cut in the through hole 9b of the second support wall Wb in the roller holding portion H. When processing the first groove g ₁ , first, as shown in FIG. 5 (a), the groove cutting cutter Cg is sent in an arc shape along the inner periphery of the through hole 9 b, so that the inner peripheral surface of the through hole 9 b is formed. The main portion of the first groove g ₁ is cut, and then both inner end faces Gf of the groove g ₁ become flat faces along the substantially diameter direction of the through-hole 9b as shown in FIG. Cutting is performed with another cutter (not shown) such as an end mill that is fed in the same direction so as to extend longer outward in the radial direction than the outer edge Lfe of Lf.
[0025]
On the other hand, the roller shaft 7 is manufactured by a process different from the manufacturing process of the rocker arm main body 2, and then the second groove g ₂ is cut on the outer periphery of the one end portion 7 b of the shaft 7. Insert the circlip L into ₂ .
[0026]
Next, the roller R temporarily assembled with a large number of needles N on the inner periphery is inserted into the gap between the first and second support walls Wa, Wb of the rocker arm body 2, and the roller R is inserted into the through holes 9a, The second jig (not shown) is inserted and held so as to be coaxial with 9b, and the roller shaft 7 is held in this holding state with the other end 7a first and the first and second grooves g. ₁ and ₂ are sequentially inserted into the through-hole 9b and the roller R of the second support wall Wa so that the phases of ₁ and g2 coincide with each other, and at the same time, one end 7b thereof is inserted into the through-hole 9b of the second support wall Wb. insert. At the time of the insertion, the circlip L is forcibly held in the elastic contraction state in which it is immersed in the second groove g ₂ in advance by the first jig (not shown). Its circlip L, when it reaches the through hole 9b due to the insertion, sliding inside the through hole 9b is released from the first jig, and come to a position corresponding to the first groove g ₁ It expands and deforms into the first groove g ₁ by its own elastic restoring force and becomes a normal set state. As a result, the roller shaft 7 can be integrally fixed to the second support wall Wb (therefore, the rocker arm body 2).
[0027]
The axial relative movement between the roller shaft 7 and the support walls Wa and Wb is thus achieved by the C-shaped elastic circlip L that can be engaged across the inner surfaces of the first and second grooves g ₁ and g _2. Since the relative rotation is prevented, the roller shaft 7 can be easily fixed to the rocker arm main body 2 without specially requiring caulking processing equipment, and the cost saving is achieved accordingly. In addition, there are no overhangs for fixing the roller shaft on the outer surfaces of the support walls Wa and Wb, and the width of the rocker arm 1 (maximum dimension in the roller shaft direction) can be reduced accordingly, thereby reducing the size of the rocker arm 1. It is done.
[0028]
In the illustrated example, the roller shaft 7 is formed hollow in order to reduce the weight of the rocker arm 1. However, even in such a hollow structure, the roller shaft 7 is deformed or distorted as in the case of caulking. There is no fear, and since the roller rolling surface (the outer peripheral surface of the central portion 7m) can be formed smoothly, the roller R can always rotate smoothly on the rolling surface.
[0029]
By the way, the roller shaft 7 receives a large struck load from the cam C, and in particular, the portion corresponding to the boundary between each support wall Wa, Wb and the roller R (needle N) of the roller shaft 7 is maximum due to the struck load. but in which shear force acts, in this embodiment, since the second groove g ₂ is spaced apart in the axial direction than the boundary counterparts, the boundary corresponding portion accompanying the special of the groove g ₂ The strength reduction (specifically, deformation and breakage) can be effectively suppressed.
[0030]
Next, a second embodiment of the present invention will be described with reference to FIG. In this embodiment, only the cross-sectional shape of the circlip L as an elastic stopper is different from the first embodiment. That is, as clearly shown in the partially enlarged view of FIG. 6, the cross-sectional shapes of the radial end portions e ₁ and e ₂ of the circlip L of the present embodiment, and the corresponding first and second grooves g ₁ , The cross-sectional shape of the bottom part of g ₂ (both radially inner ends of the hollow part G) is formed in the same linear shape. In addition, both side surfaces s, s of the circlip L and the corresponding inner surfaces of the grooves g ₁ , g ₂ (both inner surfaces of the hollow portion G) are formed as flat surfaces and are in surface contact with each other. is doing.
[0031]
According to such a configuration, when the radial end portions e ₁ and e _{2 of the} circlip L hit the corresponding grooves g ₁ and g ₂ bottom portions, they can come into close contact with each other with a wide contact area, thereby reducing the contact surface pressure. Thus, it is effective for preventing wear of the abutting surface, and is also effective for preventing rattling of the clip L. Moreover, since both side surfaces s, s of the circlip L and both inner surfaces of the grooves g ₁ , g ₂ can be accurately engaged with each other with a wide contact area, the axial movement of the roller shaft 7 is reliably prevented. Can be expected to have a sufficient retaining effect.
[0032]
Other configurations and operations are the same as those in the first embodiment, and the constituent elements corresponding to those in the first embodiment are denoted by the same reference numerals.
[0033]
Next, a third embodiment of the present invention will be described with reference to FIG. In this embodiment, the cross-sectional shape of both ends e ₁ and e ₂ in the radial direction of the circlip L and the bottoms of the _first and second grooves g ₁ and g ₂ (both radial inner ends of the hollow portion G) Only the cross-sectional shape of this embodiment is different from that of the second embodiment, that is, as shown in the partially enlarged view of FIG. 7, the cross-sectional shapes of the radial ends e ₁ and e ₂ of the circlip L of this embodiment are shown. When first the corresponding, the cross-sectional shape of the second groove g _1, g ₂ of the bottom portion is formed in a semicircular arc shape having the same shape. Moreover, both side surfaces s, s of the circlip L and both inner side surfaces of the corresponding grooves g ₁ , g ₂ are formed on a flat surface and are in surface contact with each other as in the second embodiment. With such a configuration, the same effect as that of the second embodiment can be expected.
[0034]
Other configurations and operations are the same as those in the first embodiment, and the constituent elements corresponding to those in the first embodiment are denoted by the same reference numerals.
[0035]
As mentioned above, although the Example of this invention was described, this invention is not limited to the Example, A various Example is possible within the scope of the present invention. For example, in the above embodiment, the roller shaft 7 is formed in a hollow cylindrical shape, but in the present invention (Claims 1, 3 and 4), the roller shaft 7 may be formed in a solid columnar shape.
[0036]
In the above embodiment, by inserting the roller shaft 7 in the through hole 9b of the support wall Wb in circlip state L and the elastically contracted and deformed into the second groove g ₂ in the roller shaft 7 as an elastic stop showed that so as to expanding engaged with the circlip L to the first groove g ₁ side of the through-hole 9b, the present invention (claim 1 to 3), C-shaped resilient circlip L in a state of being elastically expanded deformed into the first groove g ₁ in the through hole 9b of the support wall Wb, by inserting the roller shaft 7 in the through hole 9b of the support walls Wb, the roller shaft the circlip L 7 the second groove g ₂ side may be engaged shrinkage engagement.
[0037]
【The invention's effect】
As described above, according to the first aspect of the present invention, in the cam follower with a roller, the C-shaped first groove formed on the inner peripheral surface of the through hole of one of the support walls and the outer peripheral surface of one end of the roller shaft are formed. A C-shaped hollow portion formed between the C-shaped second groove and a C-shaped hollow portion that can be engaged across the inner surfaces of the first and second grooves at both longitudinal ends. Equipped with an elastic stopper to prevent relative movement and relative rotation between the roller shaft and the support wall, so that the roller shaft can be easily fixed to the support wall without using any special caulking equipment. In addition, there is no overhanging portion for fixing the roller shaft on the outer surface of the support wall, and the width of the cam follower can be reduced accordingly.
[0038]
In particular, according to the second aspect of the present invention, the roller shaft, and thus the cam follower, can be reduced in weight (reduced inertia mass) by forming the roller shaft hollow. Even if the roller shaft is hollow in this way, when the roller shaft is fixed, there is no risk of deformation or distortion of the roller shaft as in the case of caulking, and the roller rolling surface can be formed smoothly. Can always rotate smoothly.
[0039]
In particular, according to the invention of claim 3, both end surfaces in the length direction of the stopper are respectively formed as flat surfaces, while both inner end surfaces of the C-shaped hollow portion facing them are connected to both end surfaces of the stopper. Since they are formed on parallel flat surfaces, the end surface in the longitudinal direction of the stopper and the inner end surface of the hollow portion facing the stopper can be brought into surface contact with a relatively wide contact area. By engaging, the roller shaft can be reliably prevented from rotating, and the contact surface pressure between the stopper end surface and the inner end surface of the hollow portion (each groove) can be reduced, and wear of the contact portion can be reduced.
[0040]
In particular, according to the invention of claim 4, the cross-sectional shape of the both ends in the radial direction of the elastic stopper is the same as the cross-sectional shape of the bottom of the corresponding first and second grooves, and the elastic stopper. Since both the side surfaces of each of the grooves and the inner surfaces of each of the corresponding grooves are formed flat so as to be in surface contact with each other, wide contact is made when both radial ends of the elastic stopper hit the corresponding groove bottoms. The contact surface can be closely contacted with each other, and therefore, the contact surface pressure can be reduced, which is effective in preventing wear of the contact surface, and is also effective in preventing rattling of the elastic stopper. Moreover, since both side surfaces of the elastic stopper and both inner side surfaces of each groove can be engaged with each other with a wide contact area, the engagement is performed accurately, and the axial movement of the roller shaft is surely prevented and sufficient. Can be expected.
[0041]
In particular, according to the invention of claim 5, the radial width of the elastic stopper is set to be equal to or smaller than the groove depth of the second groove, and is set to be larger than the groove depth of the first groove. By simply pushing the roller shaft into the through-hole of the support wall in the temporarily assembled state in which the elastic stopper is elastically contracted and deformed in the radial direction and submerged in the second groove of the roller shaft, Can be automatically placed at the assembly position, and the assembly work is easy.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part showing an example of a valve gear for an internal combustion engine incorporating a roller-equipped cam follower according to a first embodiment. FIG. 2 is an enlarged cross-sectional view taken along line 2-2 of FIG. FIG. 4 is an exploded perspective view of the cam follower with roller according to the first embodiment. FIG. 5 is a diagram for briefly explaining the process of forming the first groove in the cam follower body. FIG. 6 is a view corresponding to FIG. 2 showing the cam follower with roller according to the second embodiment and a partially enlarged view thereof. FIG. 7 is a view corresponding to FIG. 2 showing the cam follower with roller according to the third embodiment. Enlarged view [Explanation of symbols]
e _1, e ₂ · · inner end surface g ₁ · · · first groove in the radial direction end portions G · · · · hollow portion Gf · · · hollow portion of the elastic fastener g ₂ · · · second groove L · · ..Circlip Lf as elastic stopper ... Both ends R in the longitudinal direction of elastic stopper ... Roller s ... Side face V of elastic stopper ... Engine valve Wa ... Support Second support wall Wb as a wall ... First support wall 1 as one support wall ... Rocker arm 2 as cam follower ... Rocker arm body 7 as cam follower body ... Roller shaft 7a ..Other end 7b... One end 9a, 9b ..Through hole

Claims (5)

A pair of support walls (Wa, Wb) arranged in parallel so as to sandwich the roller (R) between them is formed integrally with the cam follower body (2), and through holes (Wa, Wb) respectively formed in the both support walls (Wa, Wb) ( 9a, 9b), a roller-equipped cam follower in which the outer circumferences of both end portions (7a, 7b) of the roller shaft (7) for rotatably supporting the roller (R) are respectively fitted and supported.
A C-shaped first groove (g ₁ ) extending along the circumferential direction is formed on the inner peripheral surface of the through hole (9b) of one support wall (Wb), and one end (7b) of the roller shaft (7). ) A C-shaped second groove (g ₂ ) corresponding to the first groove (g ₁ ) is formed on the outer peripheral surface, and the first and second grooves (g ₁ , g ₂ ) C-shaped elasticity that can be engaged across the inner surfaces of the first and second grooves (g ₁ , g ₂ ) in the C-shaped hollow portion (G) formed in A cam follower with a roller, wherein a stopper (L) is attached to prevent relative movement and relative rotation between the roller shaft (7) and the support walls (Wa, Wb) in the axial direction. The cam follower with a roller according to claim 1, wherein the roller shaft (7) is formed hollow. Both end surfaces (Lf) in the length direction of the stopper (L) are formed as flat surfaces, while both inner end surfaces (Gf) of the hollow portion (G) facing the stopper (L) are the stopper (L). 3. The cam follower with a roller according to claim 1, wherein the cam follower is formed on a flat surface parallel to each of both end faces (Lf) of the roller. The cross-sectional shape of both ends (e ₁ , e ₂ ) in the radial direction of the elastic stopper (L) is the same as the cross-sectional shape of the bottom of the corresponding first and second grooves (g ₁ , g ₂ ). In addition, both side surfaces (s, s) of the elastic stopper (L) and both inner side surfaces of the corresponding grooves (g ₁ , g ₂ ) are formed flat and are in surface contact with each other. The cam follower with a roller according to claim 1, 2, or 3. A radial width (t) of the elastic stopper (L) is set to be equal to or smaller than a groove depth (d ₂ ) of the second groove (g ₂ ), and the first groove (g characterized in that it is set larger than the groove depth of ₁₎ (d _1), cam follower with roller according to claim 1, 2, 3 or 4.

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