JP2020079583A - Lifter - Google Patents

Abstract

To provide a lifter capable of being manufactured easily and improving a noise vibration characteristic.SOLUTION: A roller lifter 20 comprises a cylindrical lifter body 30 that reciprocates in a slide hole 12 of a lifter housing 11. In the roller lifter 20, a lubricant holding space S for holding lubricant L is formed between the lifter body 30 and the lifter housing 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lifter device.

  The roller lifter disclosed in Patent Document 1 includes a lifter main body housed in a cylinder and a roller rotatably supported by the lifter main body via a shaft support pin. The lifter main body slides back and forth in the cylinder in response to the rotation of the roller in conjunction with the cam. The roller is rotatably supported by the lifter body via a shaft support pin that is caulked and fixed to a pair of support portions of the lifter body.

JP 2012-2115 A

  In the roller lifter as disclosed in Patent Document 1, when the lifter main body is tilted when it is moved and hits the lifter housing at a corner, a tapping sound is generated. Conventionally, by setting the clearance between the lifter body and the lifter housing to an optimum size, deterioration of noise vibration characteristics due to the generation of a tapping sound is suppressed. However, when resetting the clearance again based on the evaluation after manufacturing, there is no choice but to reduce the clearance. In that case, since the outer shape of the lifter body may change when the roller bearing is caulked, it is difficult to narrow the tolerance range. Therefore, the lubricating oil between the lifter body and the lifter housing falls, and an oil film cannot be formed between them. Therefore, there is a demand for a roller lifter that is easy to manufacture and that can improve noise vibration characteristics without depending on such a tolerance range of components.

  The present invention was completed in view of the above circumstances, and an object of the present invention is to provide a lifter device that is easy to manufacture and that can improve noise vibration characteristics.

  A lifter device of the present invention includes a tubular lifter body that reciprocates in a sliding hole of a lifter housing, and a lubricating oil holding space for holding lubricating oil is formed between the lifter body and the lifter housing. There is.

  In the lifter device of the present invention, a lubricating oil holding space for holding lubricating oil is formed between the lifter body and the lifter housing. Therefore, the lifter device can maintain a state in which the lubricating oil is sufficiently held between the lifter body and the lifter housing by supplying the lubricating oil to the lubricating oil holding space. As a result, even if the lifter main body tilts with respect to the moving direction during the reciprocating movement, the collision with the sliding hole of the lifter housing is mitigated by the sufficient oil film generated between the lifter body and the lifter housing. For this reason, the lifter device can suppress the generation of a tapping sound when the lifter body comes into contact with the sliding hole of the lifter housing. By providing the lubricating oil holding space between the lifter main body and the lifter housing, the lifter device can have a large tolerance range of parts and can be easily manufactured. Therefore, the lifter device can be easily manufactured and the noise vibration characteristic can be improved.

1 is a cross-sectional view in a front view illustrating a part of a fuel supply device including a roller lifter according to a first embodiment of the present invention. It is sectional drawing of the front view of a roller lifter. It is a side view of a roller lifter. It is a top view of a holding part. It is sectional drawing of the front view of the roller lifter which concerns on Example 2 of this invention.

Preferred forms of the present invention are shown below.
In the lifter device, a holding portion that is held between the lifter body and the lifter housing below the lubricating oil holding space and that prevents the lubricating oil from falling from the lubricating oil holding space is provided. Good. This makes it easier for the lifter device to hold sufficient lubricating oil between the lifter body and the lifter housing.

  In the lifter device, a holding portion, which is held between the lifter body and the lifter housing, is provided on the upper side of the lubricating oil holding space and prevents the lubricating oil from flowing out from the inside of the lubricating oil holding space to the upper side. Good. As a result, the lifter device can hold more sufficient lubricating oil between the lifter body and the lifter housing.

  In the lifter device, the lifter body may have a groove on an outer surface. The holding portion may be attached to the groove so as to be deformable by reducing the diameter. Accordingly, when the lifter main body tilts with respect to the moving direction during the reciprocating movement, the holding portion can come into contact with the sliding hole of the lifter housing in a reduced diameter deformed state. Therefore, the oil film of the lubricating oil can be prevented from running out between the lifter body and the sliding hole of the lifter housing.

  In the lifter device, the lifter main body may have a retreat portion that is inclined in a direction away from the inner surface of the sliding hole in at least one of an upper end portion and a lower end portion. As a result, when the lifter body comes into contact with the sliding hole of the lifter housing, the retreat portion retracts from the sliding hole, so that the groove can be brought closer to the sliding hole as compared with the configuration in which the retreat portion is not provided. it can. Therefore, the holding portion attached to the groove easily contacts the sliding hole, and the oil film of the lubricating oil between the lifter body and the sliding hole can be reliably prevented from running out.

  The lifter device includes a roller that is rotatably arranged with respect to the lifter body via a shaft member and is in contact with a cam, and the holding portion has a cutout portion cut out at a predetermined position in the circumferential direction. It may be a ring-shaped body having an end, and the notch may be arranged in the direction of the rotation axis of the cam. The lifter main body tilts in a direction intersecting with the cam rotation axis direction (a vertical direction and a direction orthogonal to the cam rotation axis direction) and collides with the lifter housing. Therefore, the holding portion is a ring-shaped body having an end, and the notch portion is configured to face the rotation axis direction of the cam. Therefore, the lifter body does not collide with the lifter housing on the side where the notch is arranged. As a result, in the lifter device, the holding portion is not easily deformed, and the collision with the lifter housing can be alleviated in a state where sufficient lubricating oil is held in the lubricating oil holding space.

  In the lifter device, the lifter housing may have an oil passage for supplying lubricating oil to the lubricating oil holding space. As a result, the lifter device is supplied with the lubricating oil through the oil passage of the lifter housing. Therefore, the lifter device can reciprocate with sufficient lubricating oil held in the lubricating oil holding space.

<Example 1>
Example 1 of the present invention will be described with reference to FIGS. The roller lifter 20 according to the first embodiment is configured as a pump lifter used in the fuel supply device 10 of the internal combustion engine shown in FIG. 1, for example. The roller lifter 20 corresponds to an example of the "lifter device" of the present invention. Although not shown in detail, the fuel supply device 10 supplies the fuel adjusted to a high pressure by the roller lifter 20 to a combustion chamber of an engine (not shown). The roller lifter 20 is incorporated in the lifter housing 11 of the cylinder head.

  As shown in FIG. 1, the lifter housing 11 has a sliding hole 12 extending in the vertical direction and having a substantially circular cross section. A roller lifter 20 is inserted in the sliding hole 12 so as to be capable of reciprocating sliding in the vertical direction (reciprocating direction).

  As shown in FIG. 1, the upper end of the sliding hole 12 is provided with a through hole 13 penetrating in the vertical direction and having a circular cross section with a diameter smaller than that of the sliding hole 12. A plunger 14 is inserted into the through hole 13 so as to be vertically slidable. The upper end of the plunger 14 is arranged so as to be able to move forward and backward in a pressure chamber (not shown) that communicates with the upper end of the through hole 13. The fuel in the pressure chamber is pressurized by the upper end of the plunger 14 entering the pressure chamber.

  The lifter housing 11 is formed with a guide groove 15 extending vertically along the sliding hole 12. The lower end of the guide groove 15 is open. A detent portion 35, which will be described later, is inserted into the guide groove 15 so as to be vertically movable.

  As shown in FIG. 1, the lifter housing 11 is provided with an oil passage 16 for supplying lubricating oil to a lubricating oil holding space S described later. For example, one end (the left end in FIG. 1) of the oil passage 16 communicates with the sliding hole 12 and extends along the radial direction of the sliding hole 12 (the direction orthogonal to the vertical direction).

  As shown in FIGS. 2 and 3, the roller lifter 20 includes a lifter body 30, a roller 40, a lower holding portion 51, and an upper holding portion 52. The lower holding part 51 and the upper holding part 52 are features that correspond to the "holding part" according to this invention. The lifter body 30 has a tubular shape and is configured to reciprocate in the sliding hole 12 of the lifter housing 11. The lifter body 30 supports the roller 40 and reciprocates in the vertical direction in response to the rotation of the cam 70 as described later. The lifter body 30 includes a peripheral wall 31, a pair of opposing walls 32, a partition wall 33, a pair of connecting walls 34, and a rotation stopping portion 35. The peripheral wall 31 constitutes an outer shell of the upper portion of the lifter body 30, and has a substantially cylindrical shape substantially along the up-down direction. The outer peripheral surface of the peripheral wall 31 is arranged along the inner peripheral surface of the sliding hole 12, and is slidable in the sliding hole 12.

  The pair of opposing walls 32 protrude from both ends (left and right ends in FIG. 3) of the lower end portion of the peripheral wall 31 in a radial direction (a direction orthogonal to the vertical direction), and are provided substantially parallel to each other. The opposing wall 32 has an upper portion having a substantially quadrangular shape, and a lower portion has a substantially semicircular shape extending downward from the center of the upper portion in the left-right direction. Both ends of the shaft member 41 are supported by the opposite walls 32 by caulking or the like. As shown in FIG. 2, a cylindrical roller 40 is rotatably supported on the shaft member 41 via, for example, a needle bearing 42.

  The roller 40 is arranged so that the outer peripheral surface thereof contacts the cam 70. The cam 70 has a substantially rectangular shape and is provided on the cam shaft 71. The cam shaft 71 is rotatably supported by a pair of support walls (not shown), and its rotation shaft is held at a fixed position. The shaft member 41 and the camshaft 71 are arranged along a direction orthogonal to the reciprocating direction of the lifter body 30 and are arranged to be parallel to each other.

  The pair of connecting walls 34 are provided to face each other at both ends (left and right ends in FIG. 2) of the lower end of the peripheral wall 31 in the radial direction (direction orthogonal to the vertical direction). As shown in FIG. 2, the pair of connecting walls 34 are formed so as to connect the upper portions of the pair of opposing walls 32, respectively.

  As shown in FIG. 2, the partition wall 33 has a flat plate shape extending in the radial direction inside the peripheral wall 31. The outer periphery of the partition wall 33 is integrally connected to the inner peripheral surface of the peripheral wall 31 near the lower end thereof. Therefore, the lifter main body 30 has a structure in which the lifter main body 30 is divided into upper and lower parts via the partition wall 33. Below the partition wall 33 of the lifter main body 30, a roller 40 disposed between the opposing walls 32 is housed. As shown in FIG. 3, the lower end of the roller 40 is visible through the lower part of the connecting wall 34.

  As shown in FIGS. 2 and 3, the rotation stopping portion 35 is a portion that projects from the lower end of one of the opposing walls 32 (the opposing wall 32 on the left side in FIG. 2). The rotation stopping portion 35 functions to prevent rotation of the lifter body 30 with respect to the lifter housing 11. The rotation stopping portion 35 projects laterally from the central portion (the central portion in the left-right direction in FIG. 3) at the lower end portion of the one opposing wall 32 (the direction away from the other opposing wall 32). The rotation stopping portion 35 has a strip plate shape, is integrally formed with the one opposing wall 32, and is formed by bending an extending piece protruding downward from the one opposing wall 32. As shown in FIG. 1, the detent portion 35 enters the guide groove 15.

  As shown in FIGS. 2 and 3, the lifter body 30 has retracted portions 36A and 36B formed at the lower end and the upper end, respectively. The retracting portions 36A and 36B are portions that are inclined in a direction away from the inner surface of the sliding hole 12. The retreat portion 36A is provided at the lower end portion of the connecting wall 34. The retracting portion 36A has a tapered shape in which the outer diameter becomes smaller as it goes downward. The retreat portion 36B is provided at the upper end portion of the peripheral wall 31. The evacuation portion 36B has a tapered shape in which the outer diameter becomes smaller as it goes upward.

  As shown in FIGS. 2 and 3, the lifter body 30 has grooves 37A and 37B on its outer surface. The grooves 37A and 37B are portions to which a lower holding portion 51 and an upper holding portion 52, which will be described later, are attached, respectively. The groove 37A is provided slightly above the lower end of the lifter body 30 (in the vicinity of the upper end of the connecting wall 34 and slightly above the retreat part 36A). The groove 37A is a dent having a quadrangular cross section along the outer periphery of the lifter body 30. The groove 37B is provided slightly below the upper end of the lifter body 30 (at a position intersecting with the retracting portion 36B so as to be continuous with the lower end of the retracting portion 36B). The groove 37B is a recess having a quadrangular cross section along the outer periphery of the lifter body 30.

  The lower holding part 51 is a separate body from the lifter body 30, and as shown in FIGS. 2 to 4, is a closed-end annular body having a cutout part 51B cut out at a predetermined position in the circumferential direction. The lower holding portion 51 is made of, for example, a metal material or a resin material, and is elastically deformable. As shown in FIG. 4, the lower holding portion 51 is configured by a main body portion 51A having an arc shape (substantially C-shaped) formed of a single long member. The main body 51A has a rectangular cross section. Both ends of the main body portion 51A are configured as cutout portions 51B. As shown in FIGS. 2 and 3, the lower holding portion 51 is attached to the groove 37A via a notch portion 51B so as to be capable of reducing the diameter thereof in the direction in which the notch portion 51B is contracted. The lower holding portion 51 fits in the groove 37A along the outer periphery of the lifter body 30. The cutout portion 51B is arranged so as to open in the rotation axis direction of the roller 40 (direction intersecting with the tilt direction of the lifter body 30). That is, when the roller 40 and the lower holding portion 51 are projected on a predetermined horizontal plane, the notch portion 51B is arranged at a position where they overlap on the rotation axis of the roller 40 (a position on the back side of the paper surface in FIGS. 1 and 2). Has been done. Since the upper holding portion 52 has the same configuration as the lower holding portion 51 (a configuration including a main body portion 52A having the same configuration as the main body portion 51A and a cutout portion 52B having the same configuration as the cutout portion 51B), description will be made. Is omitted.

  The lifter body 30 is extended in the vertical direction as much as possible within a range that deviates from the rotation locus of the cam 70 located below. That is, the sliding length of the peripheral wall 31 in the vertical direction is sufficiently long, and the lifter main body 30 is less likely to tilt in the sliding hole 12.

  The lower end of the plunger 14, the retainer 61, and the urging member 62 are housed above the partition wall 33 in the lifter body 30. The retainer 61 has a disk shape extending in the radial direction, and the lower end of the plunger 14 is locked and fixed to the center of the retainer 61. The urging member 62 is a spring material composed of a compression coil spring, the lower end of which is supported by contacting the upper surface of the retainer 61, and the upper end of which is supported by contacting the lifter housing 11, and elastically in the vertical direction. It is expandable. The biasing member 62 has a biasing force that biases the lifter body 30 toward the cam 70 and pushes the roller 40 against the cam 70. The roller lifter 20 is inserted into the sliding hole 12 of the lifter housing 11, and is assembled to the cylinder head with the roller 40 in contact with the cam 70.

  With the roller lifter 20 inserted in the lifter housing 11, the notch 51B of the lower holding part 51 is arranged so as to open toward the rotational axis direction of the cam 70. That is, the cutout portion 51B overlaps the rotation axis of the shaft member 41 and the rotation axis of the cam 70 when the cam 70 and the lower holding portion 51 are projected on a predetermined horizontal plane (in FIG. Side position). Similarly, the notch 52B of the upper holding portion 52 is also arranged so as to open toward the rotational axis direction of the cam 70.

  As shown in FIG. 1, a lubricating oil holding space S for holding the lubricating oil L supplied from the oil passage 16 is formed between the lifter body 30 and the lifter housing 11. The lubricating oil holding space S is a space that surrounds the outer periphery of the lifter body 30 in a tubular shape. The lubricating oil holding space S has an inner side closed by the outer surface of the lifter body 30 and an outer side closed by the sliding hole 12 of the lifter housing 11. The lubricating oil holding space S is closed on the upper side by an upper holding section 52 provided on the upper side and is closed on the lower side by a lower holding section 51 provided on the lower side. The lubricating oil holding space S is filled with the lubricating oil L supplied via the oil passage 16. Therefore, the roller lifter 20 can reciprocate in a state where sufficient lubricating oil L is held in the lubricating oil holding space S. The lower holding portion 51 prevents the lubricating oil L from dropping from the lubricating oil holding space S. The upper holding portion 52 prevents the lubricating oil L from flowing out from the inside of the lubricating oil holding space S to the upper side.

Next, the operation of the roller lifter 20 will be described.
In the fuel suction process, the roller lifter 20 is pressed by the urging force of the urging member 62 to slide downward in the slide hole 12, and the plunger 14 also slides downward, so that the upper end portion of the plunger 14 moves. Evacuate from the pressure chamber. On the other hand, in the fuel discharge process, the roller lifter 20 slides upward in the slide hole 12 against the urging force of the urging member 62, and the plunger 14 also slides upward. Part enters the pressure chamber. Thus, the fuel in the pressure chamber is pressurized by the reciprocating movement of the roller lifter 20 in the vertical direction.

  The lifter body 30 tilts in a direction intersecting with the rotation axis direction of the cam 70 (a vertical direction and a direction orthogonal to the rotation axis direction of the cam 70, the left-right direction in FIG. 1) and collides with the sliding hole 12 of the lifter housing 11. Will be done. However, in the roller lifter 20, a lubricating oil holding space S that holds the lubricating oil L is formed between the lifter body 30 and the lifter housing 11. The lower holding portion 51 prevents the lubricating oil L from dropping from the lubricating oil holding space S. The upper holding portion 52 prevents the lubricating oil L from flowing out from the lubricating oil holding space S to the upper side. Therefore, the roller lifter 20 can maintain the oil film formation state in which the lubricating oil L is sufficiently held between the lifter body 30 and the lifter housing 11. As a result, even if the lifter main body 30 tilts with respect to the moving direction during the reciprocating movement, the collision with the sliding hole 12 of the lifter housing 11 is mitigated by the sufficient oil film generated between the lifter main body 30 and the lifter housing 11. become. Therefore, the roller lifter 20 can suppress the generation of tapping sound when the lifter body 30 contacts the sliding hole 12 of the lifter housing 11.

  The lower holding portion 51 and the upper holding portion 52 come into contact with the sliding hole 12 of the lifter housing 11 in a reduced-diameter deformed state when the lifter body 30 tilts with respect to the moving direction during reciprocating movement, and the sliding hole The contact state with the inner surface of 12 is maintained. Therefore, the oil film of the lubricating oil L can be prevented from running out between the lifter body 30 and the sliding hole 12 of the lifter housing 11.

  When the lifter main body 30 comes into contact with the sliding hole 12 of the lifter housing 11, the retreat portions 36A and 36B retreat from the sliding hole 12, so that the groove 37A is not provided as compared with the configuration in which the retreat portions 36A and 36B are not provided. , 37B can be brought closer to the sliding hole 12. Therefore, the lower holding portion 51 and the upper holding portion 52 attached to the grooves 37A and 37B easily come into contact with the sliding hole 12, and the oil film of the lubricating oil L between the lifter body 30 and the sliding hole 12 is formed. It is possible to reliably prevent breakage.

  The lower holding part 51 and the upper holding part 52 are end-shaped annular bodies, and the notches 51B and 52B are configured to face the rotation axis direction of the cam 70. Therefore, the lifter body 30 does not collide with the lifter housing 11 on the side where the cutouts 51B and 52B are arranged. As a result, in the roller lifter 20, the lower holding portion 51 and the upper holding portion 52 are less likely to be deformed, and the collision with the lifter housing 11 can be alleviated in a state where sufficient lubricating oil L is held in the lubricating oil holding space S. it can.

  The roller lifter 20 can suppress the generation of tapping sound by providing the lubricating oil holding space S between the lifter body 30 and the lifter housing 11 (providing the lower holding portion 51 and the upper holding portion 52). Therefore, unlike the related art, it is not necessary to set the clearance between the lifter main body 30 and the lifter housing 11 to an optimum size to suppress the generation of tapping sound, and it is possible to set a wide tolerance range of parts. Manufacturing becomes easy. Therefore, the roller lifter 20 can be easily manufactured and the noise vibration characteristic can be improved.

<Example 2>
FIG. 5 shows a second embodiment of the present invention. The roller lifter of the second embodiment corresponds to an example of the “lifter device” of the present invention and is applied to the valve lifter of the valve gear. In the second embodiment, the same structures as those in the first embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

  As shown in FIG. 5, the roller lifter 120 is arranged between the valve 170, which is an engaging member that constitutes the valve gear 110, and the cam 170, and has a role of transmitting the driving force of the cam 70 to the valve 80. ing. The roller lifter 120 has a structure similar to that of the first embodiment, and includes a lifter body 30 and a roller 40. The lifter body 30 includes a peripheral wall 31, a pair of opposing walls 32, a partition wall 33, and a pair of connecting walls 34. The roller 40 is rotatably supported by a shaft member 41 supported by the pair of opposing walls 32. Further, the lower end of the valve 80, the retainer 161, and the biasing member 162 are accommodated below the partition wall 33 of the lifter body 30.

  In the case of the second embodiment, contrary to the first embodiment, since the cam 170 provided on the cam shaft 171 is located above the lifter housing 111, the roller lifter 120 is vertically reversed from the roller lifter 20 of the first embodiment. It is arranged in a posture.

  The valve 80 includes a valve stem 81 and a valve body portion 82 that projects radially from a lower end portion of the valve stem 81. The valve body 82 faces the intake port or the exhaust port 17 of the lifter housing 111, and can open and close the intake port or the exhaust port 17. The valve stem 81 is slidably inserted in the stem guide 18 assembled to the lifter housing 111.

  The upper end of the valve stem 81 projects upward from the stem guide 18 and is inserted into the engaging member side space 163 of the lifter body 30 from below in a state of being connected and fixed to the retainer 161. The upper end of the valve stem 81 is in contact with the lower surface of the partition wall 33 of the lifter body 30. A biasing member 162 that biases the lifter body 30 toward the cam 170 is interposed between the wall surface of the lifter housing 111 and the retainer 161.

  Further, a slide hole 112 is provided in the lifter housing 111 so as to pass therethrough in the vertical direction. Similar to the first embodiment, the roller lifter 120 is inserted into the sliding hole 112 of the lifter housing 111 so as to be vertically reciprocally movable.

  When the cam 170 rotates and the lifter main body 30 is pressed downward via the roller 40, the lifter main body 30 moves downward against the urging force of the urging member 162, and the valve 80 also moves downward. Then, the valve body 82 opens the intake port or the exhaust port 17. When the cam 170 further rotates and the pressing force from the side of the cam 170 decreases, the lifter main body 30 moves upward due to the urging force of the urging member 162, and the valve 80 also moves upward and the valve main body 82 Closes the intake or exhaust port 17.

  The roller lifter 120 of the second embodiment configured as described above has the same effect as the roller lifter 20 of the first embodiment.

<Other Examples>
The present invention is not limited to the embodiments described with reference to the above description and drawings, and the following embodiments are also included in the technical scope of the present invention.
(1) In Examples 1 and 2 above, the roller lifter was provided with two holding portions (the lower holding portion 51 and the upper holding portion 52), but one or more including at least the lower side of the lubricating oil holding space S or You may provide with three or more holding|maintenance parts.
(2) In the first and second embodiments, the lower holding portion 51 and the upper holding portion 52 have the cutout portions 51B and 52B arranged in the direction of the rotation axis of the roller 40, respectively, and the rear side of the paper surface of FIGS. Was located in. However, at least one of the lower holding portion 51 and the upper holding portion 52 may be arranged in the rotation axis direction of the roller 40 and may be located on the front side of the paper surface of FIGS.
(3) In the first and second embodiments, the roller lifter includes the rotation stopping portion 35, but the rotation lifter 35 may not be provided. Further, although the lifter main body 30 is formed with the retreat portions 36A and 36B, the retreat portions 36A and 36B may not be formed.
(4) In Examples 1 and 2 above, the lower holding portion 51 and the upper holding portion 52 were formed of a metal material or a resin material, but may be formed of other materials. Further, the lower holding portion 51 and the upper holding portion 52 are in the form of an endless annular body having a cutout portion, but may be an endless annular body having no cutout portion.
(5) In the first and second embodiments, the main body 51A of the lower holding part 51 and the main body 52A of the upper holding part 52 have a quadrangular cross section, but may have other shapes such as a circular cross section. ..
(6) The roller lifter of the present invention may be configured as a roller tappet used in a valve mechanism of an internal combustion engine.

11... Lifter housing 12, 112... Sliding hole 16... Oil passage 20, 120... Roller lifter (lifter device)
30... Lifter body 36A, 36B... Retreat part 37A, 37B... Groove 40... Roller 41... Shaft member 51... Lower holding part (holding part)
51B... Notch part 52... Upper side holding part (holding part)
52B... Notch 70, 170... Cam L... Lubricating oil S... Lubricating oil holding space

Claims (7)

Equipped with a cylindrical lifter body that reciprocates through the sliding hole of the lifter housing,
A lifter device in which a lubricating oil holding space for holding lubricating oil is formed between the lifter body and the lifter housing.   The holding part, which is held between the lifter body and the lifter housing, is provided below the lubricating oil holding space to prevent the lubricating oil from falling from the lubricating oil holding space. Lifter device.   The holding part, which is held between the lifter body and the lifter housing, is provided on the upper side of the lubricating oil holding space and prevents the lubricating oil from flowing out from the inside of the lubricating oil holding space to the upper side. Lifter device. The lifter body has a groove on the outer surface,
The lifter device according to claim 2 or 3, wherein the holding portion is attached to the groove so as to be capable of being reduced in diameter.   The lifter device according to claim 4, wherein the lifter main body has a retreat portion that is inclined in a direction away from the inner surface of the sliding hole at at least one of an upper end portion and a lower end portion. A roller arranged to be rotatable with respect to the lifter body via a shaft member, the roller being in contact with the cam;
6. The holding portion is an endless annular body having a cutout portion cut out at a predetermined position in the circumferential direction, and the cutout portion is arranged in the rotational axis direction of the cam. The lifter device according to item 1.   The lifter device according to claim 1, wherein the lifter housing has an oil passage for supplying a lubricating oil to the lubricating oil holding space.

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