JP2007064434A - Tapered roller bearing and retainer of tapered roller bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tapered roller bearing with excellent productivity and assemblable easily and a retainer of the tapered roller bearing used for the bearing. <P>SOLUTION: A spacer 11 comprises guide surfaces 12a, 12b having curved surfaces along the rolling surfaces of tapered rollers when disposed between the adjacent tapered rollers. The guide surfaces 12a, 12b guide the tapered rollers. When the spacer is disposed between the adjacent tapered rollers, a peripheral interval between the guide surface 12a and the guide surface 12b which are the surfaces in contact with the tapered rollers adjacent to each other on the pitch circle diameter of the rollers is gradually increased from the small diameter side end face 13 toward the large diameter side end face 14 thereof. A spacer type retainer comprises a plurality of spacers 11 installed separately from each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a tapered roller bearing and a cage for a tapered roller bearing, and in particular, a tapered roller bearing that has good productivity and can easily incorporate a member constituting the tapered roller bearing, and is used for such a tapered roller bearing. The present invention relates to a tapered roller bearing retainer.

  The tapered roller bearing includes an outer ring, an inner ring, a tapered roller disposed between the outer ring and the inner ring, and a cage that holds the interval between the tapered rollers. There are multiple types of cages, such as press cages, molded cages, pinch cages, pin type cages, etc., taking advantage of their characteristics, depending on the intended use, productivity, ease of installation, etc. The type of cage used for the tapered roller bearing is selected.

  Here, a configuration and an assembling method of the tapered roller bearing using a press cage and a pin type cage as the cage will be described.

  FIG. 10 is a schematic diagram showing the press holder 105. Referring to FIG. 10, press retainer 105 is disposed on the small-diameter side annular portion 106 that is disposed on the small collar side of the inner ring when incorporated in the inner ring, and is disposed on the large collar side of the inner ring when incorporated in the inner ring. The large-diameter-side annular portion 107 and a plurality of column portions 109 that connect the small-diameter-side annular portion 106 and the large-diameter-side annular portion 107 so as to form a pocket 108 for accommodating the tapered rollers. The column portion 109 holds the interval between the tapered rollers 103 accommodated in the pockets 108. Here, the diameter of the small-diameter side annular portion 106 is configured to be smaller than the diameter of the large-diameter side annular portion 107 so that the press cage 105 is incorporated along the shape of the inner ring. In addition, although the manufacturing method, material, etc. differ also about the above-mentioned shaping | molding holder | retainer and a grind holder, it is the same as a shape.

  Next, the configuration of the tapered roller bearing 101 including the above-described press cage 105 will be described. FIG. 11 is a cross-sectional view of the tapered roller bearing 101 including the press cage 105. Referring to FIG. 11, tapered roller bearing 101 has an inner ring 102, an outer ring 104, a plurality of tapered rollers 103 disposed between inner ring 102 and outer ring 104, and a press holding unit that maintains a gap between tapered rollers 103. And a container 105. The tapered roller bearing 101 has a plurality of tapered rollers 103 in the circumferential direction, and the interval between the tapered rollers 103 is held by a press cage 105, specifically, a column portion of the press cage 105.

  Here, a method for incorporating the tapered roller bearing 101 will be described. First, a method of incorporating the inner ring 102, the tapered roller 103, and the press cage 105 among the members constituting the tapered roller bearing 101 will be described. The diameter of the small-diameter-side annular portion 106 of the press cage 105 is determined by pressing and expanding. Magnify with a mold for use. Next, the tapered rollers 103 are inserted into the pockets 108 of the press cage 105 in which the diameter of the small-diameter side annular portion 106 is enlarged. After inserting the tapered roller 103, the press cage 105 holding the tapered roller 103 is attached to the inner ring 102 such that the large end surface of the tapered roller 103 is in contact with the large collar of the inner ring 102. Thereafter, the diameter of the enlarged small-diameter-side annular portion 106 of the press cage 105 is caulked using a pressing and caulking die, so that the original shape, that is, the diameter of the small-diameter-side annular portion 106 is enlarged. Return to the previous diameter. In this way, the inner ring 102, the tapered roller 103, and the press cage 105 are incorporated. Thereafter, the assembled inner ring 102, tapered roller 103, press retainer 105 assembly, and outer ring 104 are assembled.

  Next, a configuration and a mounting method of the tapered roller bearing using the pin type cage will be described. FIG. 12 is a cross-sectional view of the tapered roller bearing 111 including the pin type cage 115. Referring to FIG. 12, the tapered roller bearing 111 includes an inner ring 112, an outer ring 114, a tapered roller 113 disposed between the inner ring 112 and the outer ring 114, and a pin-type cage that holds the interval between the tapered rollers 113. 115. The pin type retainer 115 includes a pin 116 that is inserted into a through-hole penetrating from the small end surface provided on the tapered roller 113 to the large end surface, and a small diameter side plate that holds a small diameter side end portion of the pin 116 protruding to the small end surface side. 117 and a large-diameter side plate 118 that holds the large-diameter side end portion of the pin 116 protruding to the large end surface side.

Here, a method of incorporating the tapered roller bearing 111 will be described. First, the tapered roller 113, the small-diameter side plate 117, and the large-diameter side plate 118 are arranged at predetermined positions on the inner ring 112. Thereafter, the pin 116 is inserted from the small end face side of the tapered roller 113 where the small diameter side plate 117 is located, and is inserted through the through hole provided in the small diameter side plate 117 and the through hole provided in the tapered roller 113. After the insertion, the large-diameter side end of the pin 116 and the screw hole provided in the large-diameter side plate 118 are screwed together and held. Thereafter, the pin 116 is fixed and held by welding the small diameter side end portion of the pin 116 protruding to the small end surface side and the through hole provided in the small diameter side plate 117.
Thereafter, the assembled inner ring 112, tapered roller 113, pin-type cage 115, and outer ring 114 are assembled. In addition, when welding the small diameter side edge part of the pin 116 and fixing to the small diameter side plate 117, from a viewpoint of improving workability, the welding surface, that is, the small end surface side is set to the upper side and a parallel surface. There is a need.
Japanese Utility Model Publication No. 5-92537 (paragraph number 0007, FIG. 1)

  As described above, when a press cage is used as a cage for a tapered roller bearing, a press or mold for expanding the diameter of the small-diameter side annular portion or caulking is required at the time of assembly. The equipment at the time becomes large. In particular, when it is used for a large tapered roller bearing, it is necessary to make the press and the mold large, which is problematic.

  Further, when using a pin type cage, at least parts such as a pin, a small diameter side plate, and a large diameter side plate must be arranged, which increases the number of components. Also, in the assembling method, since a welding process and a screwing process are also required, it cannot be easily assembled.

  Furthermore, the molded cage has a complicated shape such as the number of pockets corresponding to the number of tapered rollers to be held, so that the productivity is poor. Further, the kneading cage is also low in productivity because it is produced by processing the complicated shape described above one by one with a lathe or drilling machine.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a tapered roller bearing that has good productivity and can be easily incorporated, and a tapered roller bearing retainer used for such a tapered roller bearing.

  The tapered roller bearing according to the present invention includes an outer ring, an inner ring, a plurality of tapered rollers disposed between the outer ring and the inner ring, and a tapered roller disposed between the adjacent tapered rollers and adjacent in the roller pitch circle diameter. Including a plurality of spacers whose intervals between the surfaces abutting on the tapered rollers gradually increase from the small-diameter side end surface toward the large-diameter side end surface, and the plurality of spacers are provided separately from each other. A die holder and a movement restricting means for restricting movement of each spacer in the roller length direction are provided.

  With this configuration, the plurality of spacers included in the spacer type cage are separated from each other, so that the tapered roller bearing can be easily assembled.

  Here, in order for the tapered roller bearing to obtain a high load capacity without changing its size, it is necessary to increase the number of tapered rollers included in the tapered roller bearing. In this case, in the tapered roller bearing including the press cage, it is necessary to make the column portion of the press cage as thin as possible. Then, the strength of the column portion is reduced, and the end portion of the column portion is fixed to the small-diameter side annular portion and the large-diameter side annular portion, so that the column portion is broken due to stress concentration, and the press cage may be destroyed. There is. However, even in such a case, since the end portion of the spacer is not fixed, stress is not concentrated locally, and even if the width of the spacer is reduced, there is a risk of destruction. Few.

  Furthermore, when inserting a spacer into a tapered roller bearing, it is only necessary to insert the spacer between adjacent tapered rollers. Therefore, as with a tapered roller bearing including a press cage, It can be easily assembled without using a mold. Further, unlike a tapered roller bearing including a pin-type cage, it can be easily assembled without requiring a welding process and a screwing process when assembled.

  In addition, when each spacer is disposed between adjacent tapered rollers, the tapered roller bearing is provided with movement restricting means for restricting movement of each spacer in the roller length direction. The movement in the roller length direction is restricted, and the rollers are stably disposed between adjacent tapered rollers, and the interval between the tapered rollers can be maintained.

  In addition, although it is not a tapered roller bearing, the technique regarding the ball bearing including such a separation type spacer is described in the above-mentioned Japanese Utility Model Laid-Open No. 5-92537 (Patent Document 1). However, since the separation type spacer described in Patent Document 1 is used for a ball bearing, the technique described above cannot be simply applied to a tapered roller bearing. In the case of the tapered roller bearing, the separation type spacer is disposed between the tapered rollers having a tapered shape, and therefore, for example, a force to move the tapered roller to the larger diameter side by rotating the shaft or the like is generated. The spacer moves to the larger diameter side in the roller length direction. In such a case, by providing the movement restricting means for restricting the movement of the spacers in the roller length direction, the spacers can be stably disposed between the adjacent tapered rollers.

  Further, in the spacer described above, the interval between the surfaces contacting the adjacent tapered rollers in the roller pitch circle diameter is gradually increased from the small-diameter side end surface to the large-diameter side end surface of the tapered roller. When it arrange | positions between, it can arrange | position so that the rolling surface of a tapered roller may be followed, and the space | interval of the roller length direction of a tapered roller and a spacer can be kept constant.

  Preferably, the movement restricting means includes a protruding portion provided in each spacer so as to be able to come into contact with the end surface on the small diameter side of the tapered roller. By doing so, even if each spacer is about to move toward the large end face side of the tapered roller in the roller length direction, the protrusion provided on the small diameter side end face of the spacer is on the small end face of the adjacent tapered roller. It is possible to restrict the spacer from moving toward the large end face by contacting and catching. As a result, it is possible to prevent the spacer from falling off to the large end face side.

  More preferably, the movement restricting means includes a protruding portion provided in each spacer so as to be able to contact the large diameter side end surface of the tapered roller. By doing so, even if each spacer is about to move toward the small end face side of the tapered roller in the roller length direction, the protruding portion provided on the large diameter side end face of the spacer is the large end face of the adjacent tapered roller. It is possible to restrict the spacer from moving to the small end face side by being brought into contact with the hook. As a result, it is possible to prevent the spacer from falling off to the small end face side.

  More preferably, the movement restricting means includes means for bringing the large collar surface of the inner ring into contact with the end surface of each spacer facing the large collar surface. With this configuration, the large collar surface of the inner ring and the end face of the spacer come into contact with each other, and each spacer moves in the roller length direction, specifically, toward the large end face side of the tapered roller. Can be regulated.

  The movement restricting means may include means for fixing the positional relationship between the end face of the outer ring and the end face of each spacer. By doing so, the position of the end face of the spacer is fixed by the end face of the outer ring, and the movement of each spacer in the roller length direction can be restricted.

  More preferably, the spacer includes a lubricant holding means for holding the lubricant. With this configuration, the spacer itself can hold the lubricant, and the lubricant held on the rolling surfaces of the adjacent tapered rollers can be supplied. Further, the lubricant can be supplied not only to the adjacent tapered roller but also to the inner ring and the outer ring that guide the tapered roller via the rolling surface, thereby improving the lubricity of the members constituting the tapered roller bearing. be able to. Therefore, the labor for supplying the lubricant can be saved and the maintainability can be improved.

  More preferably, the spacer includes holes for holding the lubricant. By configuring in this way, the spacer can hold the lubricant in the hole, and can hold the lubricant without greatly deforming the outer shape.

  The spacer includes a lubricant holding means on a guide surface that guides the rolling surface of the tapered roller. By doing so, for example, the lubricant can be sealed or stored in the recess provided in the guide surface, and the lubricant sealed in the recess can be appropriately supplied to the guide surface.

  In another aspect of the present invention, the retainers of the tapered roller bearings are each independently disposed between adjacent tapered rollers, and the interval between the surfaces contacting the adjacent tapered rollers in the roller pitch circle diameter is tapered rollers. A plurality of spacers gradually increasing from the small-diameter side end face toward the large-diameter side end face.

  In such a tapered roller bearing retainer, the interval between the surfaces contacting the adjacent tapered rollers in the roller pitch circle diameter is gradually increased from the small diameter side end surface to the large diameter side end surface of the tapered roller. Since it has a seat, when each spacer is placed between adjacent tapered rollers, it can be placed along the rolling surface of the tapered roller, and the distance between the tapered rollers and the spacer in the roller length direction Can be kept constant.

  Preferably, the retainer of the tapered roller bearing includes a protruding portion provided so as to be able to contact the end face of the tapered roller. In this way, when the cage of the tapered roller bearing is incorporated in the tapered roller bearing, even if the spacer is about to move in the length direction of the roller, the retainer contacts the end surface of the tapered roller. Therefore, movement in the roller length direction is restricted. Therefore, it arrange | positions between adjacent tapered rollers stably, and can maintain the space | interval of adjacent tapered rollers.

  According to the present invention, since the plurality of spacers included in the spacer type cage are separated from each other, the shape is simpler than that of the integrated type cage, and the productivity of the spacer is reduced. The productivity of the tapered roller bearing can be improved. Further, when the spacer type cage is incorporated into the tapered roller bearing, the spacer can be easily incorporated because it is only necessary to insert the spacer between the adjacent tapered rollers. Further, since the movement restricting means in the roller length direction is provided, the spacer is stably disposed between the adjacent tapered rollers, and the interval between the tapered rollers can be maintained.

  In addition, each is arranged independently between the adjacent tapered rollers, and the interval between the surfaces contacting the adjacent tapered rollers in the roller pitch circle diameter is gradually increased from the small-diameter side end surface of the tapered roller toward the large-diameter side end surface. The cage of the tapered roller bearing having a plurality of spacers can be arranged along the rolling surface of the tapered roller when each spacer is arranged between adjacent tapered rollers. The distance between the roller and the spacer in the roller length direction can be kept constant.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a spacer 11 included in a spacer type retainer according to an embodiment of the present invention. Referring to FIG. 1, the spacer 11 includes guide surfaces 12 a and 12 b having curved surfaces along the rolling surfaces of the tapered rollers when arranged between adjacent tapered rollers, and the guide surfaces 12 a and 12 b. Guides the tapered rollers. Further, when arranged between the adjacent tapered rollers, the circumferential interval between the guide surface 12a and the guide surface 12b, which is a surface in contact with the adjacent tapered rollers in the roller pitch circle diameter, is from the small-diameter side end surface 13. It gradually increases toward the large-diameter side end face 14. By doing so, when the spacer 11 is arranged between the adjacent tapered rollers, the spacer 11 can be arranged along the rolling surface of the tapered roller, and the distance between the tapered roller and the spacer in the roller length direction is set. Can be kept constant.

  The spacer type retainer has a plurality of spacers 11 provided separately from each other.

  Since the shape of the spacer 11 described above has a simple structure as compared with an integrated cage, productivity can be improved. Furthermore, since it has a simple shape, it is possible to reduce variations in the shape of each spacer, and when arranged between adjacent tapered rollers, the intervals between the tapered rollers can be kept uniform.

  The distance between the small-diameter side end face 13 and the large-diameter side end face 14 is preferably as long as possible in order to increase the holding force for maintaining the distance between the adjacent tapered rollers.

  Further, in order to restrict the radial movement of the tapered rollers, the distance between the upper surface 15 which is a surface located on the outer ring side and the lower surface 16 which is a surface located on the inner ring side when arranged between adjacent tapered rollers. It is preferable to widen as much as possible and to increase the number of radial hooks with the tapered rollers.

  FIG. 2 is a cross-sectional view of the tapered roller bearing 21 including the spacer type cage including the spacer 11 shown in FIG. 3 shows the tapered roller 23b provided in the tapered roller bearing 21 shown in FIG. 2, the tapered roller 23a adjacent to the tapered roller 23b, and the spacer 11 as viewed from the small end face side of the tapered rollers 23a and 23b. FIG. 2 and 3, a tapered roller bearing 21 includes an inner ring 22, an outer ring 24, a plurality of tapered rollers 23a and 23b disposed between the inner ring 22 and the outer ring 24, and adjacent tapered rollers 23a, And a spacer type retainer including a spacer 11 for maintaining a distance of 23b. The spacer 11 is disposed between the tapered rollers 23a and the tapered rollers 23b so that the guide surfaces 12a and 12b face the rolling surfaces of the tapered rollers 23a and 23b, respectively.

  Here, as a movement restricting means for restricting the movement of the spacer 11 in the roller length direction, it is arranged between the large collar surface 25 of the inner ring 22 that guides the large end surfaces of the tapered rollers 23a and 23b and the tapered rollers 23a and 23b. The large-diameter side end surface 14 of the spacer 11 that faces when the contact is made is brought into a contact state. 4 is an enlarged view showing a contact state between the large collar surface 25 and the large-diameter side end surface 14 indicated by IV in FIG. Referring to FIG. 4, in order to make large collar surface 25 and large diameter side end surface 14 come into contact with each other, for example, lower surface 16 of spacer 11 is made to track surface 27 as much as possible within a range that does not interfere with track surface 27 of inner ring 22. Or the diameter of the outer diameter surface 26 of the large bowl is increased, and the outer ring 24 is moved closer to the outer ring 24 than the lower surface 16.

  By configuring in this way, the large-diameter side end face 14 has a large flange surface even when it receives a force to push out from the adjacent tapered rollers 23a, 23b to the large-diameter side of the roller and moves toward the large-diameter side of the roller. 25, the spacer 11 cannot move any further, and the movement of the spacer 11 in the roller length direction, specifically, the roller large diameter side direction is restricted. Therefore, the spacer 11 is appropriately disposed between the tapered rollers 23a and 23b, and the interval between the tapered rollers 23a and 23b can be maintained. Further, the maximum outer diameter of the gavel of the inner ring 22 may be larger than the lower surface 16 of the spacer 11. By doing so, even if the spacer 11 tries to move in the direction of the small roller diameter, the small diameter side end surface 13 of the spacer 11 contacts the small flange surface that guides the small end surfaces of the tapered rollers 23a, 23b. The spacer 11 cannot move, and the movement of the spacer 11 in the roller length direction, specifically, the roller small diameter side direction is restricted.

  In addition, as a means for restricting the movement of the spacer in the roller length direction, the shape of the spacer or the inner ring is changed. However, the present invention is not limited to this, and an outer ring that forms a tapered roller bearing is used. The movement in the length direction may be restricted.

  FIG. 5 is a sectional view of the tapered roller bearing 31 in which the side plate 37 is attached to the outer ring 34 so as to restrict the movement of the spacer 35 in the roller length direction. Referring to FIG. 5, the tapered roller bearing 31 includes an inner ring 32, an outer ring 34, a tapered roller 33 disposed between the inner ring 32 and the outer ring 34, and a spacer disposed between the plurality of tapered rollers 33. 35 and a side plate 37 attached to the end face 39 of the outer ring 34 located on the large end face side of the tapered roller 33. A side surface 38 of the side plate 37 facing the large end surface of the tapered roller 33 abuts on the large diameter side end surface 36 of the spacer 35. With this configuration, the positional relationship between the side surface 38 of the side plate 37 and the large-diameter side end surface 36 of the spacer 35 is fixed, so that the movement in the roller length direction is restricted.

  The spacers 11 and 35 are not limited to the shapes described above, and may have the following shapes. 6A, 6B, and 6C are cross-sectional views of spacers 41, 43, and 46 whose cross-sectional shapes are changed. With reference to FIG. 6 (A), as for spacer 41, guide surface 42a, 42b may be comprised by the some plane instead of a curved surface. In this case, in order to restrict the radial movement of the tapered roller, the position where the guide surfaces 42a and 42b are closest is preferably close to the center of the guide surfaces 42a and 42b. Furthermore, the guide surfaces 42a and 42b may not be configured only by a plane, but may be configured by a curved surface and a plane. Referring to FIG. 6B, the spacer 43 may have a configuration in which the circumferential width of the lower surface 45 is shorter than the circumferential width of the upper surface 44. FIG. With reference to C), the spacer 46 may be configured such that the width of the upper surface 47 is shorter than the width of the lower surface 48 in the circumferential direction.

  As a means for restricting the movement of the spacer in the roller length direction, the spacer may include a protrusion that can contact the end surface of the tapered roller. FIG. 7 is a diagram illustrating a state in which the spacer 51 including the protruding portion is disposed between the adjacent tapered rollers 55a and 55b. Referring to FIG. 7, a small-diameter side end surface 53 of the spacer 51 is provided with a protruding portion 54 that protrudes toward the adjacent tapered rollers 55 a and 55 b. Similarly, the large-diameter side end face 56 is provided with a protrusion 57. When the spacer 51 is disposed between the adjacent tapered rollers 55a and 55b, the contact surface 52a of the projecting portion 54 faces the small end surfaces 58a and 58b of the tapered rollers 55a and 55b, and the contact surface 52b of the projecting portion 57. Faces the large end surfaces 59a, 59b of the tapered rollers 55a, 55b.

  By doing so, even if the spacer 51 tries to move to the large end face side of the tapered rollers 55a and 55b in the roller length direction, the contact surface 52a of the protruding portion 54 provided on the small diameter side end face 53 of the spacer 51. However, it is possible to restrict the spacer 51 from moving toward the large end surface side by being brought into contact with the small end surfaces 58a and 58b of the tapered rollers 55a and 55b, thereby preventing the spacer 51 from coming out to the large end surface side. can do. In particular, the spacer 51 has a circumferential interval that gradually increases from the small-diameter side end surface 53 toward the large-diameter side end surface, so that the spacer 51 received from the tapered rollers 55a and 55b is pushed out to the large end surface side. However, by providing such a projection 54, the spacer 51 does not escape from the large end surface side.

  Further, even if the spacer 51 tries to move to the small end face side of the tapered rollers 55a and 55b in the roller length direction, the contact surface 52b of the protruding portion 57 provided on the large diameter side end face 56 of the spacer 51 is: It is possible to restrict the spacer 51 from moving toward the small end face side by being brought into contact with the large end faces 59a and 59b of the tapered rollers 55a and 55b and to prevent the spacer from coming out to the small end face side. it can. In particular, a certain gap is provided between the adjacent tapered rollers 55a and 55b and the spacer 51. When the spacer 51 is shifted to one tapered roller side, the gap is maximized, and the small end face side is provided. There is a risk of falling out. However, by providing such a protrusion 57, the spacer 51 does not slip out from the small end face side.

  Here, a method for incorporating a tapered roller bearing according to an embodiment of the present invention will be described. First, a method for incorporating a spacer and a tapered roller into the inner ring will be described. FIG. 8 is a diagram illustrating a state in which a plurality of spacers provided with protrusions on the small diameter side end surface and the large diameter side end surface and a plurality of tapered rollers are incorporated in the inner ring. Referring to FIG. 8, first, tapered rollers 67 are arranged on inner ring 66 at substantially equal intervals. Next, the spacer 61 is inserted between the tapered rollers 67. Thereafter, the last spacer 61 is inserted between the tapered rollers 67 and incorporated so as to restrict the radial movement of the plurality of spacers 61 and the plurality of tapered rollers 67 arranged in the circumferential direction. In this way, the spacer 61 and the tapered roller 67 are incorporated into the inner ring 66. Thereafter, an assembly in which the inner ring 66, the spacer 61, and the tapered roller 67 are assembled, and the outer ring are assembled.

  By incorporating the tapered roller bearing in this way, when the tapered roller bearing is assembled, there is no need for a press or mold for expanding the bottom or caulking, as in the case of a press cage, and a pin type cage. Thus, the tapered roller bearing can be easily assembled without going through the screwing process and the welding process.

  Here, since the spacers 61 are independent of each other, the movement thereof is not restricted, and if the inner ring 66 is inclined, the arrangement may be lost or the inner ring 66 may fall off. In such a case, in order to restrict the movement of the spacer 61, the side wheel 68 that restricts the movement is hooked and fixed to the protruding portion 63 of the large-diameter side end surface provided in the spacer 61. By doing so, the movement of the spacer 61 at the time of assembling, particularly the movement in the radial direction can be restricted, and assembling can be performed more easily. Further, the protruding portion 62 on the small diameter side end surface may be fixed using the side wheel 68.

  Note that the spacer described above may include a lubricant holding means for holding the lubricant. FIGS. 9A and 9B are views showing an example in which a lubricant holding portion for holding the lubricant is provided on the guide surface of the spacer. Referring to FIG. 9A, the spacer 71 has a plurality of groove-shaped lubricant holding portions 73 that are continuous from the upper surface 74 to the lower surface 75 on the left and right guide surfaces 72a and 72b. Lubricant is enclosed and held in the lubricant holding portion 73. By providing the lubricant holding portion 73 on the guide surfaces 72a and 72b of the spacer 71, the held lubricant can be efficiently supplied to the guide surfaces 72a and 72b. Further, the lubricant holding part 73 may have a recessed shape, that is, a shape recessed from the guide surfaces 72a and 72b. By doing so, the lubricant can be accumulated and held in the recess, and the lubricant held on the guide surfaces 72a and 72b can be supplied. Further, as shown in FIG. 9B, the lubricant holding portion 78 provided on the left and right guide surfaces 77 a and 77 b of the spacer 76 has a groove shape that continues from the small diameter side end surface 79 to the large diameter side end surface 80. There may be.

  Further, as shown in FIG. 9C, a lubricant holding portion 83 may be provided on the upper surface 84 and the lower surface 85 of the spacer 81. With this configuration, since the end of the lubricant holding portion 83 is on the guide surfaces 82a and 82b, the held lubricant can be supplied from the end of the lubricant holding portion 83 to the guide surfaces 82a and 82b. it can. Further, as shown in FIG. 9D, a lubricant holding portion 88 may be provided on the small diameter side end surface 89 and the large diameter side end surface 90 of the spacer 86. By configuring in this way, the end of the lubricant holding portion 88 is located on the guide surfaces 87a and 87b as in the spacer 81 shown in FIG. 9C, so that the held lubricant is transferred to the lubricant holding portion. The guide surfaces 87a and 87b can be supplied from the end of 88.

  Further, as a means for holding the lubricant, a hole for holding the lubricant may be included in the spacer. In this case, for example, the spacer having holes is immersed in the lubricant, the lubricant is contained in the holes, and this is sintered, so that the lubricant is impregnated in the spacer and the lubricant is held in the holes. To do. By doing so, it is possible to hold the lubricant in the spacer without changing the outer shape.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The tapered roller bearing and the tapered roller bearing retainer according to the present invention have good productivity, can be easily incorporated, and are less likely to break even if the spacer width is reduced. It can be effectively used for tapered roller bearings, tapered roller bearings that require a high load capacity, and cages used in such tapered roller bearings.

It is a figure which shows the spacer 11 contained in the spacer type | mold retainer with which the tapered roller bearing which concerns on one Embodiment of this invention is equipped. It is sectional drawing which shows the tapered roller bearing 21 provided with the spacer type | mold retainer containing the spacer 11 shown in FIG. It is the figure which looked at the tapered rollers 23a and 23b and the spacer 11 from the small end surface side. It is an enlarged view which shows the contact state of the large collar surface 25 and the large diameter side end surface 14. FIG. It is sectional drawing of the tapered roller bearing 31 which attached the side plate 37 to the outer ring | wheel 34 based on other Embodiment of this invention. It is sectional drawing of spacer 41,43,46 which changed cross-sectional shape. It is a figure showing the state which has arrange | positioned the spacer 51 which contains the protrusion part 54 in the small diameter side end surface and the large diameter side end surface between the adjacent tapered rollers 55a and 55b. It is a figure showing the state which incorporated the spacer 61 which provided the protrusion parts 62 and 63 in the small diameter side end surface, and the large diameter side end surface, and the several tapered roller 67 in the inner ring | wheel 66. FIG. It is a figure which shows the example of the various spacers which provided the lubricant holding part, (A) And (B) is the figure which provided the lubricant holding part in the guide surface of the spacer, (C) is a spacer. The figure which provided the lubricant holding part in the end surface of this, (D) is the figure which provided the lubricant holding part in the upper surface and lower surface of a spacer. It is an illustration schematic diagram of the conventional press holder 105. It is sectional drawing showing the tapered roller bearing 101 containing the press retainer 105 in the past. It is sectional drawing showing the tapered roller bearing 111 containing the pin type holder | retainer 115 in the past.

Explanation of symbols

  11, 35, 41, 43, 46, 51, 61, 71, 76, 81, 86 Spacer, 12a, 12b, 42a, 42b, 72a, 72b, 77a, 77b, 82a, 82b, 87a, 87b Guide surface, 13, 53, 79, 89 Small-diameter side end surface, 14, 36, 56, 80, 90 Large-diameter side end surface, 15, 44, 47, 74, 84 Upper surface, 16, 45, 48, 75, 85 Lower surface, 21, 31 Tapered roller bearing, 22, 32, 66 inner ring, 23a, 23b, 33, 55a, 55b, 67 tapered roller, 24, 34 outer ring, 25 large flange surface, 26 outer diameter surface, 27 raceway surface, 37 side plate, 38 side surface, 39 End face, 52a, 52b Contact face, 54, 57, 62, 63 Protruding part, 58a, 58b Small end face, 59a, 59b Large end face, 68 Side wheel, 73, 78, 83, 88 Lubricant holding part.

Claims (10)

Outer ring,
Inner ring,
A plurality of tapered rollers disposed between the outer ring and the inner ring;
A plurality of tapered rollers arranged between adjacent tapered rollers, wherein the interval between the surfaces contacting the adjacent tapered rollers in the roller pitch circle diameter gradually increases from the small diameter side end surface to the large diameter side end surface of the tapered rollers. A spacer type retainer including a plurality of spacers, wherein the plurality of spacers are provided separately from each other;
A tapered roller bearing comprising: a movement regulating means for regulating movement of each spacer in the roller length direction. 2. The tapered roller bearing according to claim 1, wherein the movement restricting means includes a protruding portion provided in each spacer so as to be able to come into contact with a small diameter side end surface of the tapered roller. The tapered roller bearing according to claim 2, wherein the movement restricting means includes a protruding portion provided in each spacer so as to be able to abut on a large-diameter side end surface of the tapered roller. The tapered roller according to any one of claims 1 to 3, wherein the movement restricting means includes means for bringing a large collar surface of the inner ring into contact with an end surface of each spacer facing the large collar surface. bearing. The tapered roller bearing according to any one of claims 1 to 3, wherein the movement restricting means includes means for fixing a positional relationship between an end face of the outer ring and an end face of each spacer. The tapered roller bearing according to claim 1, wherein the spacer includes a lubricant holding unit that holds a lubricant. The tapered roller bearing according to claim 6, wherein the spacer includes a hole for holding a lubricant. The tapered roller bearing according to claim 6 or 7, wherein the spacer includes the lubricant retaining means on a guide surface that guides a rolling surface of the tapered roller. Each is arranged independently between adjacent tapered rollers, and in the roller pitch circle diameter, the distance between the surfaces contacting the adjacent tapered rollers gradually increases from the small diameter side end surface to the large diameter side end surface of the tapered roller. A cage for a tapered roller bearing, comprising a plurality of spacers. The retainer of the tapered roller bearing according to claim 9, wherein the spacer includes a projecting portion provided so as to be in contact with an end surface of the tapered roller.

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