JP4838176B2 - Slide bearing - Google Patents

Description

  The present invention relates to a slide bearing for slidably supporting a slide shaft that moves linearly used in, for example, a machine tool or an FA machine.

  For example, the workpiece mounting table of a machine tool (milling machine, etc.) and the movable parts of various automatic machines for FA (factory automation) are supported by a slide shaft via a slide bearing, and linearly move along the slide shaft. It is supposed to be. In this way, if the slide bearing repeatedly moves linearly along the slide shaft for a long period of time, there is a disadvantage that frictional heat and wear occur. Therefore, in general, there is lubricating oil between the slide bearing and the slide shaft. It comes to be supplied.

For example, Patent Document 1 below includes a slide shaft, a cylindrical body that is externally fitted so as to be linearly movable with respect to the slide shaft, and a retainer that is provided on the outer periphery of the slide shaft and includes a large number of rolling elements. In the lubricant supply tool used in the linear motion mechanism, an annular cover is externally fitted and fixed to the tip of the cylindrical body, and is held within the annular cover and is externally fitted to the outer periphery of the retainer. There has been disclosed a lubricant supply tool provided with a lubricant holding pad for supplying a lubricant to the surface. The lubricant holding pad is formed of a sponge or the like and is impregnated with lubricating oil.
Japanese Patent Laid-Open No. 11-82882

  In the case of the above-mentioned Patent Document 1, when the lubricant holding pad is used in an inclined state or a horizontal direction, for example, when the cylindrical body is disposed obliquely or horizontally, the lubricating oil impregnated in the lubricant holding pad is reduced by gravity. May be biased downward. In this case, a predetermined amount of lubricating oil can be supplied from the lower part of the lubricant holding pad, but the lubricating oil cannot be supplied satisfactorily from the upper part of the pad. As a result, there has been a problem that the lubricating oil cannot be evenly supplied to the outer periphery of the retainer mounted on the outer periphery of the slide shaft.

  Accordingly, an object of the present invention is to provide a slide bearing capable of supplying a lubricant evenly to the outer periphery of the slide shaft.

In order to achieve the above object, a slide bearing of the present invention includes a cylindrical body that slidably supports a slide shaft, and a lubricant supply that is attached to an end of the cylindrical body and supplies a lubricant to the outer periphery of the slide shaft. A rolling element on which the outer periphery of the slide shaft is in rolling contact is mounted on the inner periphery of the cylindrical body, and the lubricant supply member has a frame shape having an inner space, and the inner space is formed in the inner space. A plurality of housing recesses are defined through a plurality of partition walls, and a case in which a notch groove communicating with each housing recess is formed on the inner periphery thereof, and a lubricant is impregnated to each housing of the case And a plurality of lubricant supply pads that are protruded from the inner periphery of the case through the notch groove and formed with protrusions that contact the outer periphery of the slide shaft. The case has an outer peripheral wall. And an inner peripheral wall and a bottom wall A frame body having one end face opened and an annular cover attached to the opening of the frame body. A plurality of slits along the circumferential direction are formed at predetermined intervals on the outer peripheral wall of the frame body. The outer periphery of the cover is fitted into the slit, and a rib that engages with the outer peripheral edge of the cover that fits into the slit projects into the inner periphery of the opening of the frame. It is provided .

  According to the above invention, since the lubricant is supplied from the protrusion of the lubricant supply pad that comes into contact with the outer periphery of the slide shaft, the outer periphery of the slide shaft is coated with the lubricant and can be maintained in a lubrication state. The slide bearing can be moved smoothly with respect to the shaft over a long period of time. Further, the lubricant applied to the slide shaft is transferred to the rolling element, and further transferred from the rolling element to the inner periphery of the cylinder. As a result, the lubricant transferred to the slide shaft and the inner periphery of the cylinder reduces the frictional force between the slide shaft and the inner periphery of the cylinder and the rolling element, and the guide groove of the rolling element formed on the outer periphery of the slide shaft and the inner periphery of the cylinder. Can be effectively prevented.

  And since the inside of the case is partitioned by a partition wall, the lubricant supply member can prevent the lubricant filled in one housing recess from moving to another housing recess, and the slide bearing Whatever the orientation, the lubricant can be prevented from moving to the lower part in the case due to gravity and biased, and the lubricant can be supplied evenly to the outer periphery of the slide shaft.

Furthermore , since the slit along the circumferential direction is formed in the outer peripheral wall of the frame body, the cover can be fitted relatively easily while the outer peripheral wall of the frame body is bent, and workability can be improved. it can. In addition, since the outer periphery of the cover is fitted into the slit provided on the outer peripheral wall of the frame body, it is possible to prevent the outer periphery of the cover from protruding from the outer peripheral wall of the case and to be easily attached to the mounting hole of the slide shaft. It can be shaped. Further, since the outer periphery of the annular cover is fitted and fitted in a slit along the circumferential direction formed on the outer peripheral wall of the frame body, the outer periphery wall of the frame body is evenly engaged with a good balance. The cover can be attached to the frame by reducing the axial deviation of the center of the cover relative to the center of the frame.

  Further, in the slide bearing of the present invention, the cover is composed of an annular plate material and an elastic seal material that is also annular and is attached to at least one surface of the plate material, and the elastic seal material is It is preferable that the inner periphery protrudes inward from the inner periphery of the plate member and is elastically in contact with the outer periphery of the slide shaft.

  According to this, since the elastic seal material elastically contacts the outer periphery of the slide shaft, when the slide shaft moves in the axial direction, the lubricant covered on the outer periphery of the slide shaft by the elastic seal material is scraped off. Since the amount of the lubricant flowing out from the case is reduced, the decrease in the lubricant can be suppressed. In addition, when the outer periphery of the cover is fitted into the slit of the outer peripheral wall, that is, when the outer periphery of the cover is fitted into the slit, the elastic sealing material is elastically in close contact with the edge of the slit to reduce the gap. The lubricant can be prevented from flowing out of the slit.

Another slide bearing of the present invention includes a cylindrical body that slidably supports a slide shaft, and a lubricant supply member that is attached to an end of the cylindrical body and supplies a lubricant to the outer periphery of the slide shaft. A rolling element on which the outer periphery of the slide shaft rolls and contacts is provided on the inner periphery of the cylindrical body, and the lubricant supply member has a frame shape having an internal space, and a plurality of partition walls are provided in the internal space. A plurality of recesses are defined through the case, a case in which a notch groove communicating with each recess is formed on the inner periphery thereof, and a lubricant is impregnated, and the recesses are accommodated in the recesses of the case. And a plurality of lubricant supply pads that are protruded from the inner periphery of the case through the notch groove and formed with protrusions that come into contact with the outer periphery of the slide shaft . Annular ring that extends in the axial direction and opens on one side Are formed, and a plurality of the rolling elements are inserted into each annular groove, and they are configured to circulate in sliding contact with the outer periphery of the slide shaft. The lubricant supply member is attached to the end of the cylinder so that the annular groove formed on the periphery of the cylinder is aligned with one side where the annular grooves are opened .

  According to this, the lubricant supply member protrudes from each cutout groove of the case so that the lubricant supply member is positioned substantially aligned with the open side of the plurality of annular grooves formed on the periphery of the cylinder. Since it is attached to the end of the cylinder, the lubricant can be efficiently supplied to the rolling elements that are inserted into the respective annular grooves and circulate, and the slide movement of the slide bearing using the slide shaft as a guide is performed. It becomes smoother. Furthermore, the lubricant is supplied into the annular groove via the rolling elements, the frictional force between the cylinder and the rolling elements is reduced, and wear around the cylinder body can be effectively prevented.

Further, in the slide bearing of the present invention, the lubricant supply pad is inserted into a main body portion inserted into a portion deeper than the cutout groove of the receiving recess and a depth portion where the cutout groove of the receiving recess is provided. And an adherent portion having the protrusion protruding inward from the notch groove,
Each of the main body and the adherend is formed of a fibrous material having a predetermined fiber density or a porous material having a predetermined porosity, and the material of the adherent is more than the material of the main body. A high fiber density or a low porosity is preferable.

  According to this, since the fiber density of the adherend is higher or the porosity is lower than the fiber density or porosity of the main body, the main body is impregnated with a large amount of lubricant. At the same time, excessive supply of the lubricant is prevented at the adherend, and as a result, the lubricant can be supplied to the outer periphery of the slide shaft over a long period of time.

  According to the slide bearing of the present invention, the lubricant is supplied from the protrusion of the lubricant supply pad, and the outer periphery of the slide shaft can be coated with the lubricant to maintain the lubrication state. The slide of the slide bearing with respect to the slide shaft The movement can be performed smoothly over a long period of time. Since the inside of the case is partitioned by the partition wall, the lubricant in one housing recess can be prevented from moving to another housing recess, and no matter what direction the slide bearing is arranged, lubrication It is possible to prevent the agent from moving to the lower part in the case due to gravity and being biased, and to supply the lubricant evenly to the outer periphery of the slide shaft. As a result, the lubricant applied to the slide shaft is transferred to the inner periphery of the cylinder through the rolling element, and the wear of the rolling element, the outer periphery of the slide shaft and the inner periphery of the cylinder is prevented, and the life of the slide bearing is increased. Can do.

  Hereinafter, an embodiment of a slide bearing of the present invention will be described with reference to the drawings.

  This slide bearing 1 is used when, for example, a slide shaft used for reciprocating linear movement of a work placement table provided in a machine tool such as a milling machine or a movable part of an FA automatic machine is linearly moved. A slide shaft 5 that moves linearly, such as a slide shaft in a press working die set, which is configured so that two or more plates can be brought close to and away from each other via the slide shaft (see FIG. 3). As shown in FIG. 1, a cylinder 10 that slidably supports the slide shaft 5, and both ends of the cylinder 10 are attached to the outer periphery of the slide shaft 5. And a lubricant supply member 20 for supplying the same. Note that as the lubricant in the present invention, lubricating oil or other liquid lubricants are used.

  2 and 3 together, the cylindrical body 10 has a cylindrical outer cylinder 11 made of a metal such as bearing steel (SUJ) and extending a predetermined length. The inner circumference of both ends of the outer cylinder 11 is expanded through an annular step 12 (see FIGS. 1 and 3). Further, an engaging wall 13 projects in an annular shape on the inner periphery of the end surface of the enlarged diameter portion, and an engaging claw 55 of the frame body 40 described later engages between the stepped portion 12 and the engaging wall 13. Then, the lubricant supply members 20 and 20 are attached to both ends of the cylindrical body 10. A synthetic resin or metal cage 15 is press-fitted and attached to the inner periphery of the outer cylinder 11. The length of the cage 15 is set so that both end surfaces of the cage 15 are the same end surfaces as the both step portions 12 and 12 of the outer cylinder 11.

  A plurality of annular grooves 16 are formed on the portion of the retainer 15 facing the outer cylinder 11 at equal intervals in the circumferential direction (four in this embodiment). The annular groove 16 has an annular shape composed of a pair of long grooves 16a and 16a extending along the longitudinal direction of the cage 15, and short grooves 16b and 16b respectively connected to both ends of the long grooves 16a and 16a. As shown in FIG. 5, one side of the long groove 16a opens in the form of a slit in the inner periphery of the cage 15, and the other side has a shape that sinks into the cage 15. A plurality of spherical rolling elements 18, which are made of metal such as bearing steel and are in rolling contact with the outer periphery of the slide shaft 5, are fitted in the annular groove 16. The plurality of rolling elements 18 protrude from the opening of the slit of the cage 15 and are in contact with the outer periphery of the slide shaft 5, and circulate in the annular groove 16 while being in sliding contact with the outer periphery of the slide shaft 5 during the sliding movement. It is supposed to move.

  The lubricant supply member 20 attached to the end of the cylindrical body 10 includes a case 30 including a frame body 40 and a cover 60 attached thereto, and a plurality of lubricant supply pads 70 accommodated in the case 30. It consists of and.

  4 to 7, the frame 40 constituting the case 30 will be described. The frame 40 is formed from a synthetic resin such as POM (polyoxymethylene) and has an internal space. It has a frame shape with an opening. That is, the frame body 40 includes an annular bottom wall 41, an outer peripheral wall 43 erected at a predetermined height from the outer peripheral edge of the bottom wall 41, and an outer peripheral wall 43 from the front inner peripheral edge of the bottom wall 41. And an inner peripheral wall 44 extending from the rear inner peripheral edge of the bottom wall 41 with a predetermined length (see FIG. 5), and having a double cylindrical shape, It has an internal space 45 surrounded by the walls 41, 43, 44.

  Further, as shown in FIG. 4, in the internal space 45 of the frame body 40, a plurality of receiving recesses 48 are defined via a plurality of radially arranged partition walls 47. Referring to FIG. 4, the partition wall 47 extends radially outward of the frame body 40 from the outer periphery of the inner peripheral wall 44, and is connected to the outer peripheral wall 43. A plurality are formed at equal intervals along the circumferential direction. In this embodiment, four partition walls 47 are formed at an opening angle of 90 degrees on the inner periphery of the frame body 40, and the inner space 45 of the frame body 40 is divided into four by these four partition walls 47, and is substantially fan-shaped. Four receiving recesses 48 are defined. In the plurality of housing recesses 48, portions other than a main body 71 of a lubricant supply pad 70 and a projection 75 of the adherend 73 described later are housed and arranged.

  Further, the inner peripheral wall 44 of the frame body 40 is formed with a notch groove 50 that communicates with each housing recess 48 and serves as a portion into which a protrusion 75 of a lubricant supply pad 70 described later is inserted. That is, as shown in FIG. 4, four notch grooves 50 are respectively formed in the inner peripheral wall 44 so as to be positioned in the middle in the circumferential direction of the four accommodating recesses 48. Each notch groove 50 is formed at a depth slightly shorter than the thickness of the protrusion 75 from the end face of the inner peripheral wall 44 so as to fit the protrusion 75 of the lubricant supply pad 70. The depth does not reach the bottom wall 41 (see FIG. 3).

  In addition, a plurality of slits 51 (eight in this embodiment) are formed on the periphery of the opening side end portion of the outer peripheral wall 43 of the frame body 40 at equal intervals along the circumferential direction. The plurality of slits 51 are configured such that the periphery of a cover 60 described later is fitted therein, whereby the cover 60 is attached to the opening of the frame body 40. Further, as shown in FIG. 4, a plurality of ribs 52 project from the inner periphery of the end face of the outer peripheral wall 43 at a predetermined height from a position aligned with the plurality of slits 51. In this embodiment, eight ribs 52 are provided so that when the frame body 40 is viewed in the axial direction, the inner periphery of the outer peripheral wall 43 has a substantially polygonal shape with the rib 52 as a side ( (See FIG. 4). Each of these ribs 52 is a portion that engages with the outer peripheral edge of the cover 60 fitted in the slit 51 (see FIG. 2).

  Next, the back side shape of the bottom wall 41 of the frame 40 will be described. As described above, the inner peripheral wall 44 extends from the inner peripheral edge on the back side of the bottom wall 41 with a predetermined length, and the bottom wall is concentric with the outer periphery of the inner peripheral wall 44 at a predetermined interval. An annular wall 54 projects from the back side of 41. Further, from the outer periphery of the tip end portion of the annular wall 54, the engaging claw 55 fitted between the step portion 12 of the cylindrical body 10 and the engaging wall 13 is even along the circumferential direction of the annular wall 54. A plurality of protrusions are provided at intervals (four in this embodiment). A taper surface 55a that gradually increases in height toward the bottom wall 41 side is formed on the outer surface of the engaging claw 55, and the workability of attaching the lubricant supply member 20 to the cylinder 10 is improved. (See FIG. 5). Moreover, as shown in FIG. 7, the inner peripheral wall 44 located on the back side of the bottom wall 41 and the annular wall 54 are connected by a plurality of reinforcing pieces 56, and the rigidity of both is enhanced.

  8 and 9 together, a cover 60 that is a component of the case 30 and that is attached to the opening of the frame body 40 is formed of a metal such as stainless steel and has an annular plate material 61. In the same manner, it is formed of an elastic sealing material 63 which is annularly attached to the surface side of the plate material 61. The annular plate member 61 is formed with a thickness that substantially matches the notch height of the slit 51 of the frame 40, and the outer periphery thereof is fitted into the slit 51.

  The elastic sealing material 63 is formed of a rubber material such as NBR (nitrile rubber) and has an outer diameter slightly smaller than the outer diameter of the plate member 61. Therefore, when the plate material 61 is fitted into the slit 51, the outer periphery of the elastic seal material 63 is elastically brought into contact with the outer edge of the slit 51 (see FIG. 3). Furthermore, the inner circumference of the annular elastic sealing material 63 protrudes in a direction opposite to the plate material 61 at a predetermined height to form a sealing portion 65. Further, the seal portion 65 protrudes so that the inner periphery gradually decreases in diameter, and as a result, the inner periphery of the seal portion 65 protrudes inward from the inner periphery of the plate member 61 as shown in FIG. 9. Is configured to do. Thereby, the inner circumference of the seal portion 65 is elastically brought into contact with the outer circumference of the slide shaft 5.

  Next, the lubricant supply pad 70 that is a member accommodated in the frame 40 constituting the case 30 and impregnated with a lubricant such as lubricating oil will be described. Referring also to FIG. 10, the lubricant supply pad 70 has a substantially fan-shaped shape and is inserted into a portion deeper than the cutout groove 50 of the housing recess 48. It has substantially the same fan shape and has an attachment portion 73 attached to the main body portion 71.

  The adherend portion 73 is formed thinner than the main body portion 71 and is inserted into a depth portion where the cutout groove 50 of the receiving recess 48 is provided, and has a protrusion 75 protruding from the cutout groove 50 to the inner periphery of the frame body 40. Have. That is, the protrusion 75 protrudes from the intermediate position of the inner periphery of the adherend 73 and is inserted into the notch groove 50 of the frame body 40 and from the inner peripheral wall 44 of the frame body 40 through the notch groove 50. It protrudes and extends with a length that contacts the outer periphery of the slide shaft 5. The protrusion 75 can supply the lubricant to the outer periphery of the slide shaft 5.

  The lubricant supply pad 70 is made of, for example, felt having a predetermined fiber density, sponge having a predetermined porosity, or other material that can be impregnated with liquid. In this embodiment, both the main body portion 71 and the adherend portion 73 are formed of felt. Furthermore, although the main body 71 and the adherend 73 are made of the same material, they are formed to have different densities. That is, it is formed so that the fiber density of the adherend portion 73 made of felt is higher than the fiber density of the main body portion 71 made of felt. As a result, the main body 71 can be impregnated with a large amount of lubricant, and excessive supply of the lubricant can be prevented at the adherent portion 73, and the lubricant can be applied to the outer periphery of the slide shaft 5 over a long period of time. Can be supplied. In the case where the lubricant supply pad 70 is formed of a porous material such as sponge, it is formed so that the porosity of the adherend is lower than the porosity of the main body 71. As described above, the main body 71 is impregnated with more lubricant than the adherend 73.

  Next, a method of using the slide bearing 1 of the present invention having the above configuration will be described.

  First, a method for assembling each component will be described. That is, the protrusions 75 of the plurality of lubricant supply pads 70 impregnated with a lubricant such as lubricating oil are inserted into the notch grooves 50, and the portions other than the protrusions 75 of the main body 71 and the adherend 73 are It accommodates in the accommodation recessed part 48 (refer FIG. 1).

  In this state, when the cover 60 is pushed into the opening of the frame body 40, the rib 52 is pressed against the outer periphery of the plate member 61, the outer peripheral wall 43 of the frame member 40 is bent outward, and the plate member 61 is slit. 51, the outer peripheral wall 43 is elastically restored, the outer periphery of the plate member 61 is fitted into the slit 51, the rib 52 is engaged with the outer peripheral edge of the plate member 61, and the cover 60 is formed at the opening of the frame body 40. The lubricant supply member 20 can be assembled by being mounted in a retaining state (see FIGS. 2 and 3).

  Thus, by providing the slit 51 in the outer peripheral wall 43, the cover 60 can be relatively easily moved with a light pressing force while the outer peripheral wall 43 is bent by a simple operation of pushing the cover 60 into the frame body 40. Therefore, the workability of attaching the cover 60 can be improved.

  Further, since the outer periphery of the cover 60 is fitted and pressed evenly in the slit 51, the axial displacement of the center of the cover 60 is reduced with respect to the center of the frame body 40, and the cover 60 is attached to the frame body 40. be able to. Further, when the outer periphery of the plate material 61 is fitted into the slit 51, the elastic sealing material 63 attached to the plate material 61 is elastically in close contact with the edge of the slit 51 to reduce the gap as shown in FIG. Therefore, the lubricant can be prevented from flowing out of the slit 51.

  Then, the protrusions 75 protruding from the notch grooves 50 of the lubricant supply member 20 are aligned with the long grooves 16a exposed from the inner periphery of the retainer 15 of the annular groove 16 of the cylindrical body 10, and in this state, the cylindrical body 10 The lubricant supply members 20 and 20 are pushed into both ends. That is, the end face of the annular wall 54 of the lubricant supply member 20 is pushed in until it hits the stepped portion 12 of the cylindrical body 10. Then, the taper surface 55a is pressed against the engagement wall 13 of the outer cylinder 11, the engagement claw 55 bends inward, and when the engagement claw 55 gets over the engagement wall 13, the engagement claw 55 is elastically restored. The lubricant supply members 20 and 20 can be fitted to both ends of the cylindrical body 10 by fitting between the step portion 12 and the engagement wall 13 (see FIGS. 2 and 3).

  As shown in FIG. 3, the slide bearing 1 configured as described above can be mounted on a machine tool or the like and mounted on the outer periphery of the slide shaft 5 to slide the machine tool or the like via the slide shaft 5. Can be supported. When the slide bearing 1 moves linearly with respect to the slide shaft 5, the lubricant is supplied from the protrusion 75 of the lubricant supply pad 70 that is in contact with the outer periphery of the slide shaft 5. The outer periphery of 5 is coated with a lubricant and can be maintained in a lubricating state. The lubricant applied to the outer periphery of the slide shaft 5 is transferred to the inner periphery of the outer cylinder 11 and the retainer 15 via the rolling element 18. As a result, the sliding movement of the slide bearing 10 with respect to the slide shaft 5 can be performed smoothly, and wear between the slide shaft 5 and the rolling element 18 and wear between the rolling element 18 and the outer cylinder 11 and the cage 15 are caused. Effectively suppressed. In particular, at both ends in the longitudinal direction of the annular groove 16 of the cage 15, wear on the inner periphery of the outer cylinder 11 caused by contact between the rolling element 18 and the outer cylinder 11 is effectively suppressed. For this reason, the durability of the slide bearing 10 can be dramatically improved.

  Even if the slide bearing 1 is arranged obliquely or horizontally by the arrangement of the slide shaft 5, the lubricant is evenly applied to the outer periphery of the slide shaft 5 by using the slide bearing 1. Can do. That is, each accommodating recess 48 of the slide bearing 1 is filled with the lubricant impregnated in the lubricant supply pad 70. In the slide bearing 1 of the present invention, the case 30 is partitioned by the partition wall 47. Therefore, the lubricant filled in one accommodation recess 48 can be prevented from moving to another accommodation recess 48. As a result, no matter what direction the slide bearing 1 is arranged, the lubricant is prevented from moving to the lower part in the case 30 due to gravity and biased, and the entire circumference of the slide shaft 5 is lubricated evenly. An agent can be supplied.

  In this embodiment, since the seal portion 65 of the elastic seal material 63 constituting the cover 60 is in elastic contact with the outer periphery of the slide shaft 5, when the slide shaft 5 slides, the seal The lubricant covered on the outer periphery of the slide shaft 5 by the portion 65 is scraped off. Thereby, since the quantity which a lubricant flows out from case 30 is decreased, reduction of a lubricant can be controlled.

  Further, in this embodiment, as described above, the projection 75 of each lubricant supply member 20 is aligned with the long groove 16a exposed from the inner periphery of the retainer 15 of the annular groove 16, and Since the lubricant supply members 20 and 20 are mounted at both ends, the lubricant can be efficiently supplied to the plurality of rolling elements 18 that circulate in the annular groove 16, and the slide shaft 5 is guided. The sliding movement of the slide bearing 1 can be performed more smoothly.

It is a disassembled perspective view which shows one Embodiment of the slide bearing of this invention. It is a perspective view which cut | disconnects and shows the slide bearing to an axial direction. It is sectional drawing of the slide bearing. It is a front view of the frame which comprises the slide bearing. It is sectional drawing in the AA arrow line of FIG. It is a right view of the frame which comprises the slide bearing. It is a perspective view of the back side of the frame which constitutes the slide bearing. It is a front view of the cover which comprises the slide bearing. It is sectional drawing of the cover which comprises the slide bearing. It is a disassembled perspective view of the lubricant supply pad which comprises the slide bearing.

Explanation of symbols

1 slide bearing 5 slide shaft 10 cylinder 11 outer cylinder 15 cage 16 annular groove 18 rolling element 20 lubricant supply member 30 case 40 frame 41 bottom wall 43 outer peripheral wall 44 inner peripheral wall 45 inner space 47 partition wall 48 accommodating recess 50 notch Groove 51 Slit 52 Rib 60 Cover 61 Plate material 63 Elastic seal material 70 Lubricant supply pad 75 Projection

Claims (4)

A cylindrical body that slidably supports the slide shaft, and a lubricant supply member that is attached to an end of the cylindrical body and supplies a lubricant to the outer periphery of the slide shaft,
On the inner periphery of the cylindrical body, a rolling element that is in contact with the outer periphery of the slide shaft is mounted,
The lubricant supply member has a frame shape having an internal space, and a plurality of receiving recesses are defined in the internal space via a plurality of partition walls, and a notch groove communicating with each receiving recess on the inner periphery thereof Each formed with a case,
A plurality of lubricant supply pads that are impregnated with a lubricant and are housed in the respective housing recesses of the case, protrude from the inner periphery of the case through the notch groove, and have protrusions that contact the outer periphery of the slide shaft; a has,
The case has an outer peripheral wall, an inner peripheral wall, and a bottom wall, and includes a frame body having one end face opened, and an annular cover attached to the opening of the frame body.
A plurality of slits along the circumferential direction are formed at a predetermined interval on the outer peripheral wall of the frame body, and the outer periphery of the cover is fitted into the slit and attached.
Furthermore, the slide bearing characterized by the rib which engages with the outer periphery of the said cover fitted in the said slit projectingly provided in the inner periphery of the opening part of the said frame . The cover includes an annular plate material and an elastic seal material that is also annular and is attached to at least one surface of the plate material, and the inner circumference of the elastic seal material is the inner circumference of the plate material. The slide bearing according to claim 1 , wherein the slide bearing is configured to protrude further inwardly and elastically contact the outer periphery of the slide shaft. A cylindrical body that slidably supports the slide shaft, and a lubricant supply member that is attached to an end of the cylindrical body and supplies a lubricant to the outer periphery of the slide shaft,
On the inner periphery of the cylindrical body, a rolling element that is in contact with the outer periphery of the slide shaft is mounted,
The lubricant supply member has a frame shape having an internal space, and a plurality of receiving recesses are defined in the internal space via a plurality of partition walls, and a notch groove communicating with each receiving recess on the inner periphery thereof Each formed with a case,
A plurality of lubricant supply pads that are impregnated with a lubricant and are housed in the respective housing recesses of the case, protrude from the inner periphery of the case through the notch groove, and have protrusions that contact the outer periphery of the slide shaft; Have
A plurality of annular grooves that are elongated in the axial direction and open on one side are formed on the inner periphery of the cylindrical body, and a plurality of the rolling elements are fitted into each annular groove, and these slide on the outer periphery of the slide shaft. It is configured to circulate in contact,
The lubricant supply member is attached to the end of the cylindrical body so that the cutout grooves of the case are substantially aligned with the open side of a plurality of annular grooves formed around the cylindrical body. A slide bearing characterized by that . The lubricant supply pad is inserted into a main body portion inserted into a portion deeper than the cutout groove of the receiving recess, and inserted into a depth portion of the receiving recess with the cutout groove, and protrudes from the cutout groove to the inner periphery. It is composed of an adherent portion having the protrusion,
Each of the main body and the adherend is formed of a fibrous material having a predetermined fiber density or a porous material having a predetermined porosity, and the material of the adherent is more than the material of the main body. slide bearing according to any one of claims 1 to 3, which is a higher fiber density or low porosity.

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