TW201712240A - Thrust roller bearing - Google Patents
Thrust roller bearing Download PDFInfo
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- TW201712240A TW201712240A TW105124763A TW105124763A TW201712240A TW 201712240 A TW201712240 A TW 201712240A TW 105124763 A TW105124763 A TW 105124763A TW 105124763 A TW105124763 A TW 105124763A TW 201712240 A TW201712240 A TW 201712240A
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- roller
- radiation direction
- retainer
- thrust
- rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
本發明係關於轉動在軌道面的複數個滾柱係藉保持器保持成輻射狀而構成的推力滾柱軸承。 The present invention relates to a thrust roller bearing constructed by a plurality of rollers that are rotated on a raceway surface and held in a radial shape by a retainer.
承受推力負載的推力滾柱軸承具備有以輻射狀配置的複數個滾柱(轉動體),其係在例如車輛的變速器或風車裝置中介設於非旋轉構件與旋轉構件之間,為了一邊承受旋轉軸向的推力一邊使旋轉構件順暢旋轉而使用者。推力滾柱軸承具備有例如以輻射狀排列於軌道面的複數個滾柱、及具有收容滾柱之滾柱槽的保持器(參佐專利文獻1)。 The thrust roller bearing that receives the thrust load is provided with a plurality of rollers (rotating bodies) arranged in a radial shape, which are interposed between the non-rotating member and the rotating member, for example, in a transmission or a windmill device of the vehicle, in order to withstand rotation The axial thrust causes the rotating member to smoothly rotate while the user. The thrust roller bearing includes, for example, a plurality of rollers arranged radially on the raceway surface, and a retainer having a roller groove for accommodating the rollers (Patent Document 1).
專利文獻1 日本特開2010-281406號公報 Patent Document 1 Japanese Patent Laid-Open Publication No. 2010-281406
推力滾柱軸承中,使用時,在軌道輪的內周側與外周側之間會產生圓周速率的差異(圓周速率差),因此,會有在外周側於軌道輪與滾柱間產生打滑的特性。若產生打滑,會發生因滑動摩擦而使軌道輪與滾 柱間的旋轉阻力增加、或者滾柱或軌道輪在外周側的磨損增多的缺失。 In the thrust roller bearing, when used, a difference in circumferential speed (circumferential speed difference) occurs between the inner circumferential side and the outer circumferential side of the rail wheel, and therefore, there is a slippage between the rail wheel and the roller on the outer peripheral side. characteristic. If slippage occurs, the track wheel and roll will occur due to sliding friction. The rotational resistance between the columns is increased, or the wear of the roller or the orbital wheel on the outer peripheral side is increased.
本發明之目的為提供一種可將因滾柱打滑而發生的各種缺失加以抑制的推力滾柱軸承。 SUMMARY OF THE INVENTION An object of the present invention is to provide a thrust roller bearing which can suppress various types of defects caused by roller slippage.
本發明係關於一種至少承受推力負載的推力滾柱軸承,具備:滾柱群,由輻射狀排列在軌道面的複數滾柱所構成,且在前述滾柱的輻射方向排列有複數列;及保持器,具有收容構成前述滾柱群的前述滾柱之複數列滾柱槽,而構成前述輻射方向外側的前述滾柱群的前述滾柱之個數係多於構成前述輻射方向內側的前述滾柱群的前述滾柱之個數。 The present invention relates to a thrust roller bearing that is at least subjected to a thrust load, comprising: a roller group composed of a plurality of rollers radially arranged on a raceway surface, and a plurality of columns arranged in a radial direction of the roller; and maintaining a plurality of roller grooves for accommodating the rollers constituting the roller group, and the number of the rollers constituting the roller group outside the radiation direction is larger than the number of rollers constituting the inner side in the radiation direction The number of the aforementioned rollers of the group.
再者,前述保持器係由排列在前述輻射方向的複數個保持器組件所構成,前述保持器組件也可具有和1列前述滾柱群對應的1列前述滾柱槽。 Further, the retainer is composed of a plurality of retainer assemblies arranged in the radiation direction, and the retainer assembly may have one row of the roller grooves corresponding to one row of the roller groups.
再者,前述複數個保持器組件也可在前述輻射方向自由連結或分離。 Furthermore, the plurality of retainer assemblies can also be freely coupled or separated in the aforementioned direction of radiation.
再者,前述複數個保持器組件也可不在前述輻射方向連結。 Furthermore, the plurality of retainer assemblies may not be coupled in the aforementioned radiation direction.
再者,前述滾柱槽係延伸於前述輻射方向,而在前述輻射方向的外側呈開放狀,且在前述輻射方向的內側呈封閉狀,而且,在前述保持器的厚度方向呈開放狀,在前述滾柱收容於前述滾柱槽的狀態中,前述滾柱係經由前述滾柱槽的前述保持器厚度方向開放部,朝前述保持器的厚度方向突出前述保持器,前述滾柱槽也 可限制前述滾柱從前述滾柱槽的前述保持器厚度方向開放部脫出。 Further, the roller groove extends in the radiation direction, and has an open shape on the outer side in the radiation direction, and is closed inside the radiation direction, and is open in the thickness direction of the retainer. In a state in which the roller is accommodated in the roller groove, the roller protrudes in the thickness direction of the retainer through the opening portion of the roller groove in the thickness direction of the retainer, and the roller groove is also The roller can be restricted from coming out of the opening portion of the roller groove in the thickness direction of the retainer.
再者,前述輻射方向內側的前述保持器組件的前述滾柱槽中,前述輻射方向外側的開放端部,也可藉前述輻射方向外側的前述保持器組件予以封塞,而限制收容於前述輻射方向內側的前述保持器組件的前述滾柱槽的前述滾柱朝前述輻射方向外側脫出。 Further, in the roller groove of the holder assembly on the inner side in the radiation direction, the open end portion on the outer side in the radiation direction may be blocked by the holder assembly on the outer side in the radiation direction to restrict accommodation in the radiation The aforementioned roller of the aforementioned roller groove of the aforementioned retainer assembly in the direction of the direction is outwardly displaced toward the radiation direction.
本發明係關於一種至少承受推力負載的推力滾柱軸承,具備:滾柱群,由輻射狀排列在軌道面的複數個滾柱所構成;及保持器,具有滾柱槽藉以收容構成前述滾柱群的前述滾柱,前述滾柱槽係延伸於前述輻射方向,而在前述輻射方向的外側呈開放狀,在前述輻射方向的內側呈封閉狀,此外,前述滾柱槽係朝前述保持器的厚度方向呈開放狀,而在前述滾柱收容於前述滾柱槽的狀態中,前述滾柱係經由前述滾柱槽的前述保持器厚度方向開放部,朝前述保持器的厚度方向突出前述保持器,前述滾柱槽可限制前述滾柱從前述滾柱槽的前述保持器厚度方向開放部脫出。 The present invention relates to a thrust roller bearing that is at least subjected to a thrust load, comprising: a roller group composed of a plurality of rollers radially arranged on a raceway surface; and a retainer having a roller groove for accommodating the aforementioned roller The roller of the group, the roller groove extends in the radiation direction, and has an open shape on the outer side in the radiation direction, and is closed inside the radiation direction, and the roller groove is toward the retainer. In a state in which the thickness direction is open, the roller is protruded in the thickness direction of the retainer through the retainer thickness direction opening portion of the roller groove in a state in which the roller is accommodated in the roller groove. The roller groove can restrict the roller from coming out of the opening portion of the roller groove in the thickness direction of the retainer.
再者,推力滾柱軸承為承受推力負載及徑向負載的推力滾柱軸承,前述軌道面可為圓錐狀。 Furthermore, the thrust roller bearing is a thrust roller bearing that is subjected to a thrust load and a radial load, and the raceway surface may have a conical shape.
再者,前述滾柱可具有朝前述滾柱的輻射方向內側變窄的大致圓錐形狀。 Further, the roller may have a substantially conical shape that is narrowed toward the inner side in the radiation direction of the roller.
再者,前述滾柱及/或前述保持器可用氟樹脂形成。 Further, the roller and/or the holder may be formed of a fluororesin.
若依本發明,可提供得以抑制因滾柱打滑所引起的各種缺失的推力滾柱軸承。 According to the present invention, a thrust roller bearing capable of suppressing various defects caused by roller slip can be provided.
1、1A、101、201‧‧‧推力滾柱軸承 1, 1A, 101, 201‧‧‧ thrust roller bearings
2、2A、2B、102、202、202A、202B‧‧‧滾柱群 2, 2A, 2B, 102, 202, 202A, 202B‧‧‧ roller group
3、103、203‧‧‧保持器 3, 103, 203‧‧‧ retainers
22、22A、22B、122、222、222A、222B‧‧‧滾柱 22, 22A, 22B, 122, 222, 222A, 222B‧‧ ‧ rollers
32、32A、32B、132、232、232A、232B‧‧‧滾柱槽 32, 32A, 32B, 132, 232, 232A, 232B‧‧‧roller slots
33、33A、33B、233、233A、233B‧‧‧保持器組件 33, 33A, 33B, 233, 233A, 233B‧‧‧ keeper assembly
41、141、241‧‧‧外側開放端部(外側的開放狀端部) 41, 141, 241‧‧‧ outside open end (outer open end)
43、143、243‧‧‧厚度方向開放部(厚度方向的開放部) 43, 143, 243 ‧ ‧ thickness opening section (opening section in thickness direction)
61a、71a、161a、171a、261a、271a‧‧‧軌道面 61a, 71a, 161a, 171a, 261a, 271a‧‧‧ track surface
DD‧‧‧輻射方向 DD‧‧‧radiation direction
DT‧‧‧保持器的厚度方向 Thickness direction of DT‧‧‧ retainer
圖1A為以省略軌道輪之狀態顯示本發明第1實施形態的推力滾柱軸承1的俯視圖。 Fig. 1A is a plan view showing a thrust roller bearing 1 according to a first embodiment of the present invention in a state in which a rail wheel is omitted.
圖1B為圖1A的仰視圖。 Figure 1B is a bottom view of Figure 1A.
圖2A為圖1A的前視圖。 2A is a front view of FIG. 1A.
圖2B為圖1A的A-B-C線的剖面圖。 Fig. 2B is a cross-sectional view taken along line A-B-C of Fig. 1A.
圖3A為內側保持器組件33A的俯視圖。 FIG. 3A is a top plan view of the inner retainer assembly 33A.
圖3B為圖3A的前視圖。 Fig. 3B is a front view of Fig. 3A.
圖3C為改變圖3B的方向的圖示。 Fig. 3C is a diagram for changing the direction of Fig. 3B.
圖4A為顯示假設從滾柱槽32A取出滾柱22A的狀態,屬於圖3A的對應圖。 Fig. 4A is a view showing a state in which the roller 22A is taken out from the roller groove 32A, and corresponds to Fig. 3A.
圖4B為顯示假設從滾柱槽32A取出滾柱22A的狀態,屬於圖3C的對應圖。 Fig. 4B is a view showing a state in which the roller 22A is taken out from the roller groove 32A, and corresponds to Fig. 3C.
圖5A為外側保持器組件33B的仰視圖。 FIG. 5A is a bottom view of the outer retainer assembly 33B.
圖5B為圖5A的前視圖。 Figure 5B is a front view of Figure 5A.
圖5C為改變圖5B的方向的圖示。 Fig. 5C is a diagram for changing the direction of Fig. 5B.
圖6A為顯示假設從滾柱槽32B取出滾柱22B的狀態,屬於圖5A的對應圖。 Fig. 6A is a view showing a state in which the roller 22B is taken out from the roller groove 32B, and corresponds to Fig. 5A.
圖6B為顯示假設從滾柱槽32B取出滾柱22B的狀態,屬於圖5C的對應圖。 Fig. 6B is a view showing a state in which the roller 22B is taken out from the roller groove 32B, and corresponds to Fig. 5C.
圖7A為圖2B的分解剖面圖,係顯示外側保持器組件33B的圖示。 Figure 7A is an exploded cross-sectional view of Figure 2B showing an illustration of the outer retainer assembly 33B.
圖7B為圖2B的分解剖面圖,係顯示內側保持器組件33A的圖示。 Figure 7B is an exploded cross-sectional view of Figure 2B showing an illustration of the inner retainer assembly 33A.
圖8A為以包含軌道輪6、7的狀態顯示本發明第1實施形態的推力滾柱軸承1的圖示,屬於圖2A的對應圖。 FIG. 8A is a view showing the thrust roller bearing 1 according to the first embodiment of the present invention in a state including the rail wheels 6, 7, and corresponds to the corresponding diagram of FIG. 2A.
圖8B為以包含軌道輪6、7的狀態顯示本發明第1實施形態的推力滾柱軸承1的圖示,屬於圖2B的對應圖。 8B is a view showing the thrust roller bearing 1 according to the first embodiment of the present invention in a state including the rail wheels 6, 7, and corresponds to the corresponding diagram of FIG. 2B.
圖9為以省略軌道輪的狀態顯示本發明第2實施形態的推力滾柱軸承1A的俯視圖。 FIG. 9 is a plan view showing the thrust roller bearing 1A according to the second embodiment of the present invention in a state in which the rail wheel is omitted.
圖10A為以省略軌道輪的狀態顯示本發明第3實施形態的推力滾柱軸承101的前視圖。 Fig. 10A is a front elevational view showing the thrust roller bearing 101 according to the third embodiment of the present invention in a state in which the rail wheel is omitted.
圖10B為圖10A的俯視圖。 Figure 10B is a plan view of Figure 10A.
圖11為顯示假設從滾柱槽132取出滾柱122的狀態,屬於圖10B的對應圖。 Fig. 11 is a view showing a state in which the roller 122 is taken out from the roller groove 132, and corresponds to Fig. 10B.
圖12為以包含軌道輪106、107的狀態顯示本發明第3實施形態的推力滾柱軸承101的剖面圖。 Fig. 12 is a cross-sectional view showing the thrust roller bearing 101 according to the third embodiment of the present invention in a state including the rail wheels 106 and 107.
圖13為從圖12所示的狀態省略了軌道輪106、107及滾柱122之狀態的剖面圖。 Fig. 13 is a cross-sectional view showing a state in which the rail wheels 106, 107 and the rollers 122 are omitted from the state shown in Fig. 12.
圖14A為以省略軌道輪的狀態顯示本發明第4實施形態的推力滾柱軸承201的前視圖。 Fig. 14A is a front elevational view showing the thrust roller bearing 201 according to the fourth embodiment of the present invention in a state in which the rail wheel is omitted.
圖14B為圖14A的俯視圖。 Figure 14B is a plan view of Figure 14A.
圖15A為假設從滾柱槽232B取出滾柱222B之狀態的圖示,屬於外側保持器組件233B的俯視圖。 Fig. 15A is a view showing a state in which the roller 222B is taken out from the roller groove 232B, and is a plan view of the outer holder assembly 233B.
圖15B為假設從滾柱槽232A取出滾柱222A之狀態的圖示,屬於內側保持器組件233A的俯視圖。 Fig. 15B is a view showing a state in which the roller 222A is taken out from the roller groove 232A, and is a plan view of the inner holder assembly 233A.
圖16A為以包含軌道輪206、207的狀態顯示本發明第4實施形態的推力滾柱軸承201的剖面圖。 Fig. 16A is a cross-sectional view showing the thrust roller bearing 201 according to the fourth embodiment of the present invention in a state including the rail wheels 206 and 207.
圖16B為圖16A的展開剖面圖。 Figure 16B is an expanded cross-sectional view of Figure 16A.
圖17為從圖16B所示狀態省略了軌道輪206、207及滾柱222A、222B之狀態的剖面圖。 Fig. 17 is a cross-sectional view showing a state in which the rail wheels 206 and 207 and the rollers 222A and 222B are omitted from the state shown in Fig. 16B.
圖18A為第1變形例的立體圖,係顯示外座圈6A。 Fig. 18A is a perspective view showing a first modification, showing the outer race 6A.
圖18B為第1變形例的立體圖,係顯示內座圈7A。 Fig. 18B is a perspective view showing a first modification, showing the inner race 7A.
圖19為第1變形例的剖面圖,屬於圖8B的對應圖。 Fig. 19 is a cross-sectional view showing a first modification and belonging to the corresponding diagram of Fig. 8B.
圖20為第2變形例的俯視圖,屬於圖1A的對應圖。 Fig. 20 is a plan view showing a second modification, and corresponds to the corresponding diagram of Fig. 1A.
茲參佐附圖說明有關本發明第1實施形態的推力滾柱軸承1。圖1A係為以省略軌道輪的狀態顯示本發明第1實施形態的推力滾柱軸承1的俯視圖。圖1B為圖1A的仰視圖。圖2A為圖1A的前視圖。圖2B為圖1A的A-B-C線剖面圖。圖3A為內側保持器組件33A的俯視圖。圖3B為圖3A的前視圖。圖3C為改變圖3B的方向的圖示。圖4A係顯示假設從滾柱槽(pocket)32A取出滾柱22A的狀態,屬於圖3A的對應圖。圖4B係顯示假設從滾柱槽32A取出滾柱22A的狀態,屬於圖3C的對應圖。圖5A為外側保持器組件33B的仰視圖。圖5B為圖 5A的前視圖。圖5C係改變圖5B的方向的圖示。圖6A係顯示假設從滾柱槽32B取出滾柱22B的狀態,屬於圖5A的對應圖。圖6B為顯示假設從滾柱槽32B取出滾柱22B的狀態,屬於圖5C的對應圖。圖7A為圖2B的分解剖面圖,屬於顯示外側保持器組件33B的圖。圖7B為圖2B的分解剖面圖,屬於顯示內側保持器組件33A的圖。圖8A係以包含軌道輪6、7的狀態顯示本發明第1實施形態的推力滾柱軸承1,屬於圖2A的對應圖。圖8B係以包含軌道輪6、7的狀態顯示本發明第1實施形態的推力滾柱軸承1,屬於圖2B的對應圖。 The thrust roller bearing 1 according to the first embodiment of the present invention will be described with reference to the drawings. Fig. 1A is a plan view showing the thrust roller bearing 1 according to the first embodiment of the present invention in a state in which the rail wheels are omitted. Figure 1B is a bottom view of Figure 1A. 2A is a front view of FIG. 1A. Fig. 2B is a cross-sectional view taken along line A-B-C of Fig. 1A. FIG. 3A is a top plan view of the inner retainer assembly 33A. Fig. 3B is a front view of Fig. 3A. Fig. 3C is a diagram for changing the direction of Fig. 3B. Fig. 4A shows a state in which the roller 22A is taken out from the roller pocket 32A, and corresponds to the corresponding diagram of Fig. 3A. Fig. 4B shows a state in which the roller 22A is taken out from the roller groove 32A, and corresponds to the corresponding diagram of Fig. 3C. FIG. 5A is a bottom view of the outer retainer assembly 33B. Figure 5B is a diagram Front view of the 5A. Fig. 5C is a diagram for changing the direction of Fig. 5B. Fig. 6A shows a state in which the roller 22B is taken out from the roller groove 32B, and corresponds to the corresponding diagram of Fig. 5A. Fig. 6B is a view showing a state in which the roller 22B is taken out from the roller groove 32B, and corresponds to Fig. 5C. Fig. 7A is an exploded cross-sectional view of Fig. 2B, showing a view showing the outer holder assembly 33B. Fig. 7B is an exploded cross-sectional view of Fig. 2B, showing a view showing the inner holder assembly 33A. Fig. 8A shows the thrust roller bearing 1 according to the first embodiment of the present invention in a state including the rail wheels 6, 7, and corresponds to the corresponding diagram of Fig. 2A. Fig. 8B shows the thrust roller bearing 1 according to the first embodiment of the present invention in a state including the rail wheels 6, 7, and corresponds to the corresponding diagram of Fig. 2B.
第1實施形態的推力滾柱軸承1係為實質上只承受推力負載的推力滾柱軸承。如圖1A至圖8B所示,第1實施形態的推力滾柱軸承1具備:滾柱群2、保持器3、作為外側軌道輪(外輪)的外座圈6(參佐圖8A、圖8B)、及作為內側軌道輪(內輪)的內座圈7(參佐圖8A、圖8B)。 The thrust roller bearing 1 of the first embodiment is a thrust roller bearing that substantially receives only a thrust load. As shown in FIG. 1A to FIG. 8B, the thrust roller bearing 1 of the first embodiment includes a roller group 2, a retainer 3, and an outer race 6 as an outer rail wheel (outer wheel) (see FIGS. 8A and 8B). And the inner race 7 as the inner orbital wheel (inner wheel) (see Fig. 8A, Fig. 8B).
如圖8A、圖8B所示,保持器3係配置於外座圈6與內座圈7之間。如圖1A至圖6B所示,構成滾柱群2的複數個滾柱22係以可轉動方式保持在形成於保持器3的滾柱槽32中。 As shown in FIGS. 8A and 8B, the retainer 3 is disposed between the outer race 6 and the inner race 7. As shown in FIGS. 1A to 6B, a plurality of rollers 22 constituting the roller group 2 are rotatably held in the roller grooves 32 formed in the holder 3.
推力滾柱軸承1係使用於例如車輛的變速器或風車裝置,如圖8A、圖8B所示,其係介設於穿通內座圈7內周側的帶有階差的軸狀旋轉構件75與面向外座圈6的殼體65之間。藉由保持在保持器3的複數個滾柱22的轉動,推力滾柱軸承1即得以一邊承受旋轉構件75的軸向推力一邊順暢地支持旋轉構件75的旋轉。 The thrust roller bearing 1 is used, for example, in a transmission or a windmill device of a vehicle, as shown in FIGS. 8A and 8B, and is disposed on a shaft-shaped rotating member 75 with a stepped step on the inner circumferential side of the inner race 7 and Facing between the housings 65 of the outer race 6. By the rotation of the plurality of rollers 22 held by the holder 3, the thrust roller bearing 1 can smoothly support the rotation of the rotating member 75 while receiving the axial thrust of the rotating member 75.
外座圈6以一體形態具有:環狀的軌道部61,形成有供複數個滾柱22轉動的軌道面61a;及短圓筒狀外周壁部62,從軌道部61的外周端以和軌道面61a正交的方式延伸。軌道面61a係位於和旋轉軸J1正交的平面上,且和內座圈7的軌道面71a相對配置。 The outer race 6 has an annular rail portion 61 formed with a raceway surface 61a for rotating a plurality of rollers 22, and a short cylindrical outer peripheral wall portion 62 from the outer peripheral end of the rail portion 61 and the rail. The faces 61a extend in an orthogonal manner. The raceway surface 61a is located on a plane orthogonal to the rotation axis J1, and is disposed to face the raceway surface 71a of the inner race 7.
內座圈7以一體形態具有:環狀的軌道部71,形成有供複數個滾柱22轉動的軌道面71a;及短圓筒狀的內周壁部72,以和軌道面71a正交的方式從軌道部71的內周端延伸。軌道面71a係以和外座圈6的軌道面61a平行的方式相對配置。 The inner race 7 has an annular rail portion 71 integrally formed with a raceway surface 71a for rotating a plurality of rollers 22, and a short cylindrical inner peripheral wall portion 72 orthogonal to the raceway surface 71a. It extends from the inner peripheral end of the rail portion 71. The raceway surface 71a is opposed to each other so as to be parallel to the raceway surface 61a of the outer race 6.
帶有階差的軸狀旋轉構件75係以其階差部跨設並碰到內座圈7的軌道部71與內周壁部72而壓入。 The shaft-shaped rotating member 75 having a step is pushed in by the step portion 71 and the inner peripheral wall portion 72 of the inner race 7 so as to straddle the step portion.
如圖1A至圖8B所示,滾柱群2係由輻射狀延伸於軌道面61a、71a且沿圓周方向DR以保持間隔方式配設的複數個滾柱22所構成。滾柱群2(2A、2B)在滾柱22的輻射方向DD排列有複數列(在本實施形態中為2列)。滾柱22係為外周呈圓筒狀的圓筒滾柱。 As shown in FIGS. 1A to 8B, the roller group 2 is composed of a plurality of rollers 22 that radially extend on the raceway surfaces 61a and 71a and are disposed at intervals in the circumferential direction DR. The roller group 2 (2A, 2B) has a plurality of rows (two rows in the present embodiment) arranged in the radiation direction DD of the roller 22. The roller 22 is a cylindrical roller having a cylindrical outer circumference.
從俯視看來,保持器3係呈圓環板狀。外座圈6的外周壁部62微大於保持器3的外周。因此,配置於外座圈6的軌道部61的保持器3可在外周壁部62的內側順暢旋轉。 The retainer 3 is in the shape of a circular plate from a plan view. The outer peripheral wall portion 62 of the outer race 6 is slightly larger than the outer circumference of the retainer 3. Therefore, the holder 3 disposed on the rail portion 61 of the outer race 6 can smoothly rotate inside the outer peripheral wall portion 62.
保持器3具有複數列滾柱槽群31用以收容構成滾柱群2的滾柱22。滾柱槽群31係由在圓周方向DR保持間隔地排列的複數個滾柱槽32所構成。滾柱槽群31(31A、31B)在滾柱22的輻射方向DD排列有複數列 (在本實施形態中為2列)。滾柱槽32係以將輻射狀配置的複數個滾柱22保持成可轉動方式,且呈輻射狀設有和複數個滾柱22相同的數量。 The holder 3 has a plurality of rows of roller grooves 31 for accommodating the rollers 22 constituting the roller group 2. The roller groove group 31 is composed of a plurality of roller grooves 32 which are arranged at intervals in the circumferential direction DR. The roller groove group 31 (31A, 31B) has a plurality of columns arranged in the radiation direction DD of the roller 22. (In the present embodiment, it is two columns). The roller grooves 32 are rotatably held in a plurality of rollers 22 arranged in a radial shape, and are provided in the same number as the plurality of rollers 22 in a radial shape.
保持器3係由朝輻射方向DD排列的複數個保持器組件33所構成。本實施形態中,保持器3係由輻射方向DD內側的(第1)保持器組件33A(參佐圖3A、圖4A)、及輻射方向DD外側的(第2)保持器組件33B(參佐圖5A、圖6A)所構成。保持器組件33(33A、33B)具有分別和1列滾柱群2對應的1列滾柱槽群31(滾柱槽32)。具體而言,內側的第1保持器組件33A具有和內側的第1滾柱群2A對應的內側滾柱槽群31A(滾柱槽32A)。外側的第2保持器組件33B具有和外側的第2滾柱群2B對應的外側滾柱槽群31B(滾柱槽32B)。 The holder 3 is constituted by a plurality of holder assemblies 33 arranged in the radiation direction DD. In the present embodiment, the retainer 3 is the (first) retainer assembly 33A (see FIG. 3A, FIG. 4A) inside the radiation direction DD, and the (second) retainer assembly 33B outside the radiation direction DD. 5A and 6A). The holder assembly 33 (33A, 33B) has a row of roller groove groups 31 (roller grooves 32) corresponding to one row of roller groups 2, respectively. Specifically, the inner first retainer unit 33A has an inner roller groove group 31A (roller groove 32A) corresponding to the inner first roller group 2A. The outer second retainer unit 33B has an outer roller groove group 31B (roller groove 32B) corresponding to the outer second roller group 2B.
滾柱槽32具有和圓筒狀滾柱22的外周形狀對應而可收容滾柱22的圓筒狀內周形狀。各保持器組件33中,滾柱槽32係延伸於輻射方向DD,且在輻射方向DD外側的外側開放端部41呈開放狀。滾柱槽32在輻射方向DD的內側具有底部42而呈封閉狀。各保持器組件33中,滾柱22係在收容於滾柱槽32的狀態下,不會突出於滾柱槽32的外側開放端部41朝輻射方向DD的外側,或者大致保持在同一平面。 The roller groove 32 has a cylindrical inner circumferential shape that can accommodate the roller 22 in accordance with the outer circumferential shape of the cylindrical roller 22 . In each of the holder assemblies 33, the roller grooves 32 extend in the radiation direction DD, and the outer open end portions 41 outside the radiation direction DD are open. The roller groove 32 has a bottom portion 42 inside the radiation direction DD and is closed. In each of the holder assemblies 33, the rollers 22 are not housed in the outer side of the outer open end portion 41 of the roller groove 32 in the radiation direction DD, or substantially in the same plane, in a state of being accommodated in the roller groove 32.
在保持器3的厚度方向DT兩側,滾柱槽32在厚度方向開放部43、43係呈開放狀。在滾柱22收容於滾柱槽32的狀態下,滾柱22會經由滾柱槽32的厚度方向開放部43,比保持器3更朝保持器3的厚度方向突出。 On both sides of the thickness direction DT of the retainer 3, the roller grooves 32 are open in the thickness direction opening portions 43, 43. In a state in which the roller 22 is housed in the roller groove 32, the roller 22 protrudes in the thickness direction of the retainer 3 from the retainer 3 via the thickness direction opening portion 43 of the roller groove 32.
滾柱槽32會限制滾柱22從滾柱槽32的厚度方向開放部43脫出。詳細而言,如圖3C及圖5C所示,從延伸方向(輻射方向DD)看滾柱槽32及滾柱22時,厚度方向開放部43係較圓筒狀滾柱22的寬度(直徑)狹窄。因此,滾柱22不會從滾柱槽32的厚度方向開放部43脫出。 The roller groove 32 restricts the roller 22 from coming out of the opening portion 43 in the thickness direction of the roller groove 32. Specifically, as shown in FIG. 3C and FIG. 5C, when the roller groove 32 and the roller 22 are viewed from the extending direction (radiation direction DD), the thickness direction opening portion 43 is larger than the width (diameter) of the cylindrical roller 22. narrow. Therefore, the roller 22 does not come out from the opening portion 43 in the thickness direction of the roller groove 32.
再者,如前所述,各保持器組件33中,滾柱槽32係在輻射方向DD外側的外側開放端部41呈開放狀,而且輻射方向的內側具有底部42而呈封閉狀。因此,各保持器組件33中,滾柱22(只)可經由外側開放端部41朝輻射方向DD的內側插入滾柱槽32,而且插入於滾柱槽32的滾柱22則(只)可經由外側開放端部41朝輻射方向DD的外側脫出。 Further, as described above, in each of the holder assemblies 33, the roller groove 32 has an open outer end portion 41 which is outside the radiation direction DD, and has a bottom portion 42 in the radiation direction and is closed. Therefore, in each of the holder assemblies 33, the roller 22 (only) can be inserted into the roller groove 32 via the outer open end portion 41 toward the inner side in the radiation direction DD, and the roller 22 inserted into the roller groove 32 can be (only) The outer open end portion 41 is detached toward the outer side in the radiation direction DD.
鄰接在輻射方向DD的複數個保持器組件33係藉連結扣合部35自由地朝輻射方向DD連結或分離。本實施形態中,連結扣合部35具備第1扣合部35A及第2扣合部35B。內側的(第1)保持器組件33A的外周部沿圓周方向DR分開地設有複數個第1扣合部35A。輻射方向DD外側的(第2)保持器組件33B的內周部沿圓周方向DR分開地設有複數個第2扣合部35B。第1扣合部35A與第2扣合部35B係配置於可互相扣合的位置,且可互相扣合。在第1扣合部35A和第2扣合部35B相扣合的狀態下,內側的(第1)保持器組件33A可與外側的(第2)保持器組件33B連結。 A plurality of holder assemblies 33 adjacent to the radiation direction DD are freely coupled or separated in the radiation direction DD by the joint fastening portions 35. In the present embodiment, the connection engagement portion 35 includes the first engagement portion 35A and the second engagement portion 35B. The outer peripheral portion of the inner (first) retainer unit 33A is provided with a plurality of first engaging portions 35A apart in the circumferential direction DR. The inner peripheral portion of the (second) holder assembly 33B outside the radiation direction DD is provided with a plurality of second engaging portions 35B separately in the circumferential direction DR. The first engaging portion 35A and the second engaging portion 35B are disposed at positions that can be engaged with each other, and can be engaged with each other. The inner (first) retainer unit 33A is connectable to the outer (second) retainer unit 33B in a state in which the first engaging portion 35A and the second engaging portion 35B are engaged with each other.
於鄰接在輻射方向DD的保持器組件33(33A、33B)已連結的狀態下,輻射方向DD內側的保持器組件33A的滾柱槽32A中的輻射方向DD外側的開放端部41係藉輻射方向DD外側的保持器組件33B的內周部予以封塞。藉此方式,收容於輻射方向DD內側的保持器組件33A的滾柱槽32A的滾柱22即受到限制而不會朝輻射方向DD的外側脫出。 In a state in which the holder assembly 33 (33A, 33B) adjacent to the radiation direction DD is joined, the open end portion 41 outside the radiation direction DD in the roller groove 32A of the holder assembly 33A inside the radiation direction DD is radiated. The inner peripheral portion of the retainer assembly 33B outside the direction DD is sealed. By this means, the roller 22 of the roller groove 32A of the holder assembly 33A accommodated inside the radiation direction DD is restricted from coming out to the outside in the radiation direction DD.
構成輻射方向DD外側的滾柱群2B的滾柱22B個數(在本實施形態中為12個)係多於構成輻射方向DD內側的滾柱群2A的滾柱22A個數(在本實施形態中為8個)。鄰接在輻射方向DD的保持器組件33中,構成滾柱群2的滾柱22的個數差為例如2至10個,較佳為3至8個。 The number of rollers 22B (12 in the present embodiment) constituting the roller group 2B outside the radiation direction DD is larger than the number of rollers 22A constituting the roller group 2A inside the radiation direction DD (in the present embodiment) 8 in the middle). In the holder assembly 33 adjacent to the radiation direction DD, the difference in the number of the rollers 22 constituting the roller group 2 is, for example, 2 to 10, preferably 3 to 8.
本實施形態中,滾柱22、保持器3、外座圈6及內座圈7係由氟樹脂形成。氟樹脂可例示有PTFE、PFA、FEP。氟樹脂在耐化學藥品性、電絕緣性、耐熱性、低摩擦性(自潤滑性)、切削加工性等各種特性上很優異,和金屬或一般的樹脂相比,適於用作推力軸承的滾柱等。另外,形成滾柱等的樹脂也可為氟樹脂之外的樹脂。再者,滾柱等也可使用金屬形成。 In the present embodiment, the roller 22, the retainer 3, the outer race 6, and the inner race 7 are formed of a fluororesin. The fluororesin may, for example, be PTFE, PFA or FEP. The fluororesin is excellent in various properties such as chemical resistance, electrical insulation, heat resistance, low friction (self-lubricating property), and machinability, and is suitable as a thrust bearing as compared with metal or general resin. Roller, etc. Further, the resin forming the roller or the like may be a resin other than the fluororesin. Further, the roller or the like can also be formed using a metal.
若依第1實施形態的推力滾柱軸承1,可以達到例如以下的效果。 According to the thrust roller bearing 1 of the first embodiment, for example, the following effects can be achieved.
第1實施形態的推力滾柱軸承1具備:滾柱群2,由輻射狀排列於軌道面61a、71a的複數個滾柱22構成,且在滾柱22的輻射方向DD排列複數列;及保持器3, 具有用以收容構成滾柱群2之滾柱22的複數列滾柱槽32。再者,構成輻射方向DD外側的滾柱群2B的滾柱22B個數係多於構成輻射方向DD內側的滾柱群2A的滾柱22A個數。 The thrust roller bearing 1 of the first embodiment includes a roller group 2 composed of a plurality of rollers 22 radially arranged on the raceway surfaces 61a and 71a, and a plurality of rows arranged in the radiation direction DD of the rollers 22; 3, There are a plurality of rows of roller grooves 32 for accommodating the rollers 22 constituting the roller group 2. Further, the number of rollers 22B constituting the roller group 2B outside the radiation direction DD is larger than the number of rollers 22A constituting the roller group 2A inside the radiation direction DD.
因此,若依第1實施形態,相較於在1列滾柱群中使用長滾柱的情況,可以縮短滾柱22的長度,又可縮小輻射方向DD的滾柱22的圓周速率差,且可減少滾柱22的打滑。結果,可以抑制因滾柱22打滑所引起的各種缺失(因滑動摩擦而使軌道面61a、71a與滾柱22間的旋轉阻力增加、或使滾柱22或軌道面61a、71a在外周側的摩損增加等)。 Therefore, according to the first embodiment, the length of the roller 22 can be shortened and the circumferential speed difference of the roller 22 in the radiation direction DD can be reduced as compared with the case where the long roller is used in the one-row roller group. The slip of the roller 22 can be reduced. As a result, various kinds of defects caused by the slip of the roller 22 can be suppressed (the rotational resistance between the raceway surfaces 61a, 71a and the roller 22 is increased by the sliding friction, or the roller 22 or the raceway surfaces 61a, 71a are on the outer peripheral side. Increase in wear and tear, etc.).
此外,在各滾柱群2中,可使圓周方向DR的滾柱22間隔均一化,亦可使1個滾柱22所承受的負載大小均一化。因此,可抑制因負載集中所造成的滾柱22的變形。 Further, in each of the roller groups 2, the rollers 22 in the circumferential direction DR can be made uniform in interval, and the load on one roller 22 can be made uniform. Therefore, deformation of the roller 22 due to load concentration can be suppressed.
第1實施形態中,保持器3係由輻射方向DD可自由連結或分離的複數保持器組件33構成。保持器組件33具有和1列滾柱群2對應的1列滾柱槽32。 In the first embodiment, the retainer 3 is constituted by a plurality of retainer assemblies 33 that can be freely coupled or separated in the radiation direction DD. The holder assembly 33 has a row of roller grooves 32 corresponding to one row of roller groups 2.
因此,若依第1實施形態,藉由將具有和1列滾柱群2對應的1列滾柱槽32的保持器組件33相連結,即可容易形成收容複數列滾柱群2的複數列滾柱槽群31。 Therefore, according to the first embodiment, by connecting the holder unit 33 having one row of the roller grooves 32 corresponding to the row of the roller groups 2, it is possible to easily form the plural column in which the plurality of column groups 2 are accommodated. Roller groove group 31.
第1實施形態中,在各保持器組件33之中,滾柱槽32係延伸於輻射方向DD,且朝輻射方向DD外側開放,又在輻射方向DD內側封閉,且朝保持器3的厚度方向DT開放。在滾柱22收容於滾柱槽32的狀態 下,滾柱22會經由滾柱槽32的保持器3厚度方向DT的開放部43,朝保持器3的厚度方向DT突出保持器3。滾柱槽32得以限制滾柱22不會從滾柱槽32的保持器3厚度方向DT的開放部43脫出。 In the first embodiment, among the respective holder assemblies 33, the roller grooves 32 extend in the radiation direction DD, are open to the outside in the radiation direction DD, and are closed inside the radiation direction DD, and toward the thickness direction of the holder 3. DT is open. The state in which the roller 22 is housed in the roller groove 32 Next, the roller 22 protrudes from the opening portion 43 in the thickness direction DT of the retainer 3 of the roller groove 32 toward the holder 3 in the thickness direction DT of the retainer 3. The roller groove 32 restricts the roller 22 from coming out of the opening portion 43 in the thickness direction DT of the holder 3 of the roller groove 32.
因此,若依第1實施形態,具有滾柱槽32的保持器3(保持器組件33)可容易藉由切削加工(例如,端銑加工(end milling)或射出成型來形成。 Therefore, according to the first embodiment, the holder 3 (holder assembly 33) having the roller grooves 32 can be easily formed by cutting (for example, end milling or injection molding).
第1實施形態中,在已連接了鄰接於輻射方向DD的保持器組件33的狀態中,輻射方向DD內側的保持器組件33的滾柱槽32的輻射方向DD外側的開放端部41會被輻射方向DD外側保持器組件33封塞,使收容於輻射方向DD內側的保持器組件33的滾柱槽32的滾柱22向輻射方向DD外側脫出的情形受到限制。 In the first embodiment, in a state in which the holder assembly 33 adjacent to the radiation direction DD is connected, the open end portion 41 outside the radiation direction DD of the roller groove 32 of the holder assembly 33 inside the radiation direction DD is The radiation direction DD outer holder assembly 33 is closed, and the roller 22 of the roller groove 32 of the holder assembly 33 accommodated inside the radiation direction DD is restricted from being displaced outward in the radiation direction DD.
因此,若依第1實施形態,不需要另外設置用以封塞輻射方向DD內側的保持器組件33A的滾柱槽32A的開放端部41的構成,只要將相鄰接的保持器組件33A、33B連結,即可將滾柱槽32的開放端部41封塞。 Therefore, according to the first embodiment, it is not necessary to separately provide a configuration for closing the open end portion 41 of the roller groove 32A of the retainer assembly 33A inside the radiation direction DD, as long as the adjacent retainer assembly 33A, When the 33B is connected, the open end portion 41 of the roller groove 32 can be closed.
第1實施形態中,滾柱22及保持器3係以氟樹脂形成。特別是滾柱22、保持器3、外座圈6及內座圈7係以氟樹脂形成。 In the first embodiment, the roller 22 and the holder 3 are formed of a fluororesin. In particular, the roller 22, the retainer 3, the outer race 6 and the inner race 7 are formed of a fluororesin.
因此,若依第1實施形態,滾柱22相對於保持器3的旋轉、或滾柱22相對於外座圈6及內座圈7的轉動均可順暢進行。相較於金屬製滾柱等,因在旋轉部分不會生鏽,所以設置在非常用設備等的推力滾柱軸承,即使長時間一直處在未使用狀態卻要在緊急情況使用時,滾柱22等也可順暢轉動。 Therefore, according to the first embodiment, the rotation of the roller 22 with respect to the retainer 3 or the rotation of the roller 22 with respect to the outer race 6 and the inner race 7 can be smoothly performed. Compared with a metal roller or the like, since it does not rust in a rotating portion, it is provided in a thrust roller bearing such as a very useful device, and is used in an emergency even when it is left unused for a long time. 22 can also smoothly rotate.
接著,參佐圖9就第2實施形態的推力滾柱軸承1A加以說明。圖9為以省略軌道輪之狀態顯示本發明第2實施形態的推力滾柱軸承1A的俯視圖。第2實施形態中,主要係以和第1實施形態不同的部分為主軸進行說明。第2實施形態中,未特別說明的部分也可適用第1實施形態的說明。而且,第2實施形態中,也可達成和第1實施形態相同的效果。 Next, the thrust roller bearing 1A of the second embodiment will be described with reference to Fig. 9 . FIG. 9 is a plan view showing the thrust roller bearing 1A according to the second embodiment of the present invention in a state in which the rail wheel is omitted. In the second embodiment, a portion different from the first embodiment will be mainly described as a main axis. In the second embodiment, the description of the first embodiment can be applied to a portion that is not particularly described. Further, in the second embodiment, the same effects as those of the first embodiment can be achieved.
相較於第1實施形態的推力滾柱軸承1,第2實施形態的推力滾柱軸承1A不具備將鄰接在輻射方向DD的複數個保持器組件33(33A、33B)相連結的連結扣合部35。意即,複數個保持器組件33(33A、33B)沒有連結。因此,輻射方向DD內側的(第1)保持器組件33A和輻射方向DD外側的(第2)保持器組件33B係各自獨立,可以不同的旋轉速度(旋轉數)旋轉。第2實施形態的其他構成係和第1實施形態相同。因此,若依第2實施形態的推力滾柱軸承1A,輻射方向DD外側的(第2)保持器組件33B可以較輻射方向DD內側的(第1)保持器組件33A更快的圓周速率旋轉。 Compared with the thrust roller bearing 1 of the first embodiment, the thrust roller bearing 1A of the second embodiment does not include a connection and fastening for connecting a plurality of retainer assemblies 33 (33A, 33B) adjacent to the radiation direction DD. Part 35. That is, the plurality of holder assemblies 33 (33A, 33B) are not connected. Therefore, the (first) holder assembly 33A inside the radiation direction DD and the (second) holder assembly 33B outside the radiation direction DD are independent, and can be rotated at different rotation speeds (number of rotations). The other configuration of the second embodiment is the same as that of the first embodiment. Therefore, according to the thrust roller bearing 1A of the second embodiment, the (second) holder assembly 33B outside the radiation direction DD can be rotated at a faster peripheral speed than the (first) holder assembly 33A inside the radiation direction DD.
第2實施形態中,在保持器3配置於外座圈6與內座圈7之間的狀態下,輻射方向DD內側的保持器組件33A的滾柱槽32A中的外側開放端部41係被輻射方向DD外側保持器組件33B封塞,使收容於輻射方向DD內側保持器組件33A的滾柱槽32A的滾柱22A受到限制而不會朝輻射方向DD的外側脫出。 In the second embodiment, in a state where the retainer 3 is disposed between the outer race 6 and the inner race 7, the outer open end portion 41 of the roller groove 32A of the retainer assembly 33A inside the radiation direction DD is The radiation direction DD outer holder assembly 33B is closed, so that the roller 22A of the roller groove 32A accommodated in the radiation direction DD inner holder assembly 33A is restricted from coming out to the outside in the radiation direction DD.
若依第2實施形態的推力滾柱軸承1A,可達成和第1實施形態的推力滾柱軸承1相同的效果。而且,因輻射方向DD外側的(第2)保持器組件33B的圓周速率比輻射方向DD內側的(第1)保持器組件33A的圓周速率更大(快),所以可使旋轉運動的轉矩損失負載減低。 According to the thrust roller bearing 1A of the second embodiment, the same effects as those of the thrust roller bearing 1 of the first embodiment can be achieved. Moreover, since the circumferential rate of the (second) holder assembly 33B outside the radiation direction DD is larger (faster) than the circumferential rate of the (first) holder assembly 33A inside the radiation direction DD, the torque of the rotational motion can be made Loss load is reduced.
接著,參佐圖10A至圖13就本發明的第3實施形態加以說明。圖10A係為以省略軌道輪的狀態顯示本發明第3實施形態的推力滾柱軸承101的前視圖。圖10B係圖10A的俯視圖。圖11係顯示假設滾柱122從滾柱槽132脫出的狀態,屬於圖10B的對應圖。圖12係為以包含軌道輪106、107的狀態顯示本發明第3實施形態的推力滾柱軸承101的剖面圖。圖13係為從圖12所示的狀態省略了軌道輪106、107及滾柱122之狀態的剖面圖。 Next, a third embodiment of the present invention will be described with reference to Figs. 10A to 13 . Fig. 10A is a front view showing the thrust roller bearing 101 according to the third embodiment of the present invention in a state in which the rail wheel is omitted. Fig. 10B is a plan view of Fig. 10A. Fig. 11 is a view showing a state in which the roller 122 is taken out from the roller groove 132, and corresponds to the corresponding diagram of Fig. 10B. Fig. 12 is a cross-sectional view showing the thrust roller bearing 101 according to the third embodiment of the present invention in a state including the rail wheels 106 and 107. Fig. 13 is a cross-sectional view showing a state in which the rail wheels 106, 107 and the rollers 122 are omitted from the state shown in Fig. 12.
關於第3實施形態,主要係以和第1實施形態不同的部分為主軸進行說明,和第1實施形態相同的構成則以符號+100表示。第3實施形態中,未特別說明的部分係適用第1實施形態的說明。再者,第3實施形態中,也可達成和第1實施形態相同的效果。 In the third embodiment, a portion different from the first embodiment will be mainly described as a main axis, and a configuration similar to that of the first embodiment will be denoted by a symbol +100. In the third embodiment, the description of the first embodiment is applied to portions that are not particularly described. Further, in the third embodiment, the same effects as those of the first embodiment can be achieved.
第3實施形態的推力滾柱軸承101係為承受推力負載及徑向負載的推力滾柱軸承,如圖10A至圖13所示,具備:滾柱群102,由輻射狀排列於軌道面161a、171a的複數個滾柱122所構成;保持器103,具有滾柱槽132以收容構成滾柱群102的滾柱122;外側的軌道輪106;及內側的軌道輪107。 The thrust roller bearing 101 according to the third embodiment is a thrust roller bearing that receives a thrust load and a radial load. As shown in FIGS. 10A to 13 , the thrust roller bearing 101 includes a roller group 102 that is radially arranged on the raceway surface 161a. The plurality of rollers 122 of the 171a are configured; the retainer 103 has a roller groove 132 for accommodating the rollers 122 constituting the roller group 102; the outer rail wheel 106; and the inner rail wheel 107.
第3實施形態中,如圖10A至圖13所示,作為轉動體的滾柱122係為具有朝滾柱122的輻射方向DD內側窄縮的大致圓錐狀「圓錐滾柱」。詳細而言,如圖12所示,在外側軌道輪106的軌道面161a與內側軌道輪107的軌道面171a之間,係為隨著輻射方向DD從外周側向內周側縮徑的圓錐台狀「圓錐滾柱」。外側的軌道輪106及內側的軌道輪107分別具有和圓錐滾柱122的傾斜面對應的錐面。 In the third embodiment, as shown in FIGS. 10A to 13, the roller 122 as a rotating body is a substantially conical "tapered roller" having a narrowed inner side in the radiation direction DD of the roller 122. Specifically, as shown in FIG. 12, between the raceway surface 161a of the outer rail wheel 106 and the raceway surface 171a of the inner rail wheel 107, a truncated cone whose diameter is reduced from the outer peripheral side to the inner peripheral side in the radiation direction DD is shown. Shaped "tapered roller". The outer rail wheel 106 and the inner rail wheel 107 have tapered surfaces corresponding to the inclined surfaces of the tapered rollers 122, respectively.
外側的軌道輪106及內側的軌道輪107係保持預定間隔以同軸且相對的狀態配置在軸向DJ。外側的軌道輪106及內側的軌道輪107係設置成彼此可以旋轉軸J1為中心相對地旋轉。外側的軌道輪106與內側的軌道輪107之間,沿圓周方向DR保持一定間隔配置有圓錐滾柱122。複數個圓錐滾柱122係藉底部開口的圓錐台狀保持器103支持成可以圓錐滾柱122的中心軸為中心自由旋轉。相鄰在圓周方向的圓錐滾柱122的間隔則保持一定。 The outer rail wheel 106 and the inner rail wheel 107 are disposed in the axial direction DJ in a coaxial and opposed state at a predetermined interval. The outer rail wheel 106 and the inner rail wheel 107 are disposed to be rotatable relative to each other about the rotatable shaft J1. A tapered roller 122 is disposed between the outer rail wheel 106 and the inner rail wheel 107 at a constant interval in the circumferential direction DR. The plurality of tapered rollers 122 are supported by the truncated cone-shaped holder 103 having the bottom opening so as to be freely rotatable about the central axis of the tapered roller 122. The spacing of the tapered rollers 122 adjacent in the circumferential direction is kept constant.
如圖12所示,外側的軌道輪106與內側的軌道輪107各自分開的間隔係隨著從外周側向內周側以相同比例逐漸縮小的推拔(taper)狀。亦即,外側的軌道輪106具有隨著從內周緣端向外周緣端朝離開內側軌道輪107的方向傾斜的錐面狀軌道面161a。另一方面,內側的軌道輪107則具有隨著從內周緣端向外周緣端朝離開外側軌道輪106的方向傾斜的錐面狀軌道面171a。軌道面161a、171a為圓錐狀,且形成抵接圓錐滾柱122的狀態。 As shown in FIG. 12, the interval in which the outer rail wheel 106 and the inner rail wheel 107 are separated from each other is a taper shape which is gradually reduced in the same ratio from the outer peripheral side to the inner peripheral side. That is, the outer rail wheel 106 has a tapered raceway surface 161a that is inclined in a direction away from the inner rail wheel 107 from the inner peripheral edge end to the outer peripheral end. On the other hand, the inner rail wheel 107 has a tapered raceway surface 171a which is inclined in a direction away from the outer rail wheel 106 from the inner peripheral edge to the outer peripheral end. The raceway surfaces 161a and 171a have a conical shape and are in a state of abutting against the tapered roller 122.
圓錐滾柱122係以受外側的軌道輪106及內側軌道輪107挾持的狀態,環繞軌道輪106、107的整個圓周方向DR隔開一定間隔配置有複數個。而且,各圓錐滾柱122係在外側的軌道輪106的徑向上形成從外周緣端朝向內周緣端縮徑之圓錐台狀。圓錐滾柱122的推拔狀傾斜面係與外側軌道輪106的推拔狀軌道面161a及內側軌道輪107的推拔狀軌道面171a的傾斜角度一致。因此,圓錐滾柱122會和外側的軌道輪106的推拔狀軌道面161a抵接,並且和內側的軌道輪107推拔狀軌道面171a抵接。 The tapered roller 122 is sandwiched by the outer rail wheel 106 and the inner rail wheel 107, and a plurality of the tapered rollers 122 are disposed at regular intervals around the circumferential direction DR of the rail wheels 106 and 107. Further, each of the tapered rollers 122 has a truncated cone shape which is reduced in diameter from the outer peripheral edge toward the inner peripheral end in the radial direction of the outer rail wheel 106. The push-like inclined surface of the tapered roller 122 coincides with the inclined angle of the push-out track surface 161a of the outer rail wheel 106 and the push-out rail surface 171a of the inner rail wheel 107. Therefore, the tapered roller 122 abuts against the push-shaped rail surface 161a of the outer rail wheel 106, and abuts against the inner rail wheel 107 push-pull rail surface 171a.
第3實施形態的保持器103具有不會接觸外側軌道輪106的推拔狀軌道面161a及內側軌道輪107的推拔狀軌道面171a的圓錐台形狀,且配置在軌道面161a和軌道面171a之間的空間。 The retainer 103 of the third embodiment has a truncated cone shape that does not contact the push-pull raceway surface 161a of the outer rail wheel 106 and the push-out rail surface 171a of the inner rail wheel 107, and is disposed on the raceway surface 161a and the raceway surface 171a. The space between.
滾柱槽132具有和圓錐台狀滾柱122的外周形狀對應俾可收容滾柱122的圓錐台狀內周形狀。滾柱122在收容於滾柱槽132的狀態中,不會從滾柱槽132的外側開放端部141往輻射方向DD的外側突出,或呈大致保持在同一平面。 The roller groove 132 has a truncated cone-shaped inner circumferential shape that can accommodate the roller 122 in correspondence with the outer peripheral shape of the truncated cone roller 122. In a state of being accommodated in the roller groove 132, the roller 122 does not protrude from the outer open end portion 141 of the roller groove 132 to the outside in the radiation direction DD, or substantially maintains the same plane.
滾柱槽132係於保持器103的厚度方向DT的兩側,在厚度方向開放部143、143呈開放狀。在滾柱122收容於滾柱槽132的狀態中,滾柱122係經由滾柱槽132的厚度方向開放部143,比保持器103更突出於保持器103的厚度方向DT。 The roller grooves 132 are formed on both sides in the thickness direction DT of the holder 103, and open in the thickness direction opening portions 143 and 143. In a state in which the roller 122 is housed in the roller groove 132, the roller 122 protrudes in the thickness direction DT of the retainer 103 from the retainer 103 via the thickness direction opening portion 143 of the roller groove 132.
滾柱槽132會限制滾柱22不致從滾柱槽132的厚度方向開放部143脫出。詳細而言,如圖10B及圖12所示,從滾柱槽132及滾柱122的延伸方向(輻射方向DD)來看時,厚度方向開放部143(的開放幅度)係比圓錐台狀滾柱122的寬度還窄。因此,不會有滾柱122從滾柱槽132的厚度方向開放部143脫出的情形。 The roller groove 132 restricts the roller 22 from coming out of the opening portion 143 in the thickness direction of the roller groove 132. Specifically, as shown in FIG. 10B and FIG. 12, when viewed from the direction in which the roller grooves 132 and the rollers 122 extend (radiation direction DD), the opening direction of the thickness direction opening portion 143 is smaller than that of the truncated cone shape. The width of the post 122 is also narrow. Therefore, there is no possibility that the roller 122 is detached from the opening portion 143 in the thickness direction of the roller groove 132.
再者,滾柱槽132係延伸於輻射方向DD,而在輻射方向DD外側的外側開放端部141呈開放狀,而且,在輻射方向的內側具有底部142,並且呈封閉狀態。因此,滾柱122(只)可經由外側開放端部141朝向輻射方向DD的內側插入滾柱槽132,而插入滾柱槽132中的滾柱122也(只)可經由外側開放端部141朝輻射方向DD外側脫出。 Further, the roller groove 132 extends in the radiation direction DD, and the outer open end portion 141 outside the radiation direction DD has an open shape, and has a bottom portion 142 on the inner side in the radiation direction, and is in a closed state. Therefore, the roller 122 (only) can be inserted into the roller groove 132 via the outer open end portion 141 toward the inner side of the radiation direction DD, and the roller 122 inserted into the roller groove 132 can also (only) be openable via the outer open end portion 141 The radiation direction DD is pulled out on the outside.
若依第3實施形態,可達成和第1實施形態相同的效果。而且,第3實施形態中,滾柱122具有朝向滾柱122的輻射方向DD內側窄縮的大致圓錐形狀。此外,滾柱122係以氟樹脂形成。因此,可減小輻射方向DD的滾柱122的圓周速率差,可減少滾柱122的打滑。結果,得以抑制因滾柱122打滑所引起的各種缺失(因滑動摩擦而使軌道面161a、171a與滾柱122之間的旋轉阻力增加、或者滾柱122或軌道面161a、171a在外周側的磨損增多等)。因滾柱122係以氟樹脂形成,故其耐化學藥品性、電絕緣性、耐熱性、低摩擦性(自潤滑性)、切削加工性等各種特性很優異。 According to the third embodiment, the same effects as those of the first embodiment can be achieved. Further, in the third embodiment, the roller 122 has a substantially conical shape that is narrowed toward the inner side in the radiation direction DD of the roller 122. Further, the roller 122 is formed of a fluororesin. Therefore, the circumferential speed difference of the rollers 122 in the radiation direction DD can be reduced, and the slip of the rollers 122 can be reduced. As a result, various defects caused by the slip of the roller 122 are suppressed (the rotational resistance between the raceway surfaces 161a, 171a and the roller 122 is increased by the sliding friction, or the roller 122 or the raceway surfaces 161a, 171a are on the outer peripheral side. Increased wear, etc.). Since the roller 122 is formed of a fluororesin, it is excellent in various properties such as chemical resistance, electrical insulation, heat resistance, low friction (self-lubricating property), and machinability.
接著,參佐圖14A至圖17就本發明的第4實施形態加以說明。圖14A係為以省略軌道輪的狀態顯示本發明第4實施形態的推力滾柱軸承201的前視圖。圖14B係為圖14A的俯視圖。圖15A為假設滾柱222B從滾柱槽232B脫出的狀態的圖示,且為外側保持器組件233B的俯視圖。圖15B為假設滾柱222A從滾柱槽232A脫出的狀態的圖示,且為內側保持器組件233A的俯視圖。圖16A為以包含軌道輪206、207的狀態顯示本發明第4實施形態的推力滾柱軸承201的剖面圖。圖16B為圖16A的展開剖面圖。圖17為從圖16A所示的狀態省略了軌道輪206、207及滾柱222A、222B的狀態的剖面圖。 Next, a fourth embodiment of the present invention will be described with reference to Figs. 14A to 17 . Fig. 14A is a front view showing the thrust roller bearing 201 according to the fourth embodiment of the present invention in a state in which the rail wheel is omitted. Fig. 14B is a plan view of Fig. 14A. FIG. 15A is a view showing a state in which the roller 222B is disengaged from the roller groove 232B, and is a plan view of the outer holder assembly 233B. 15B is a diagram showing a state in which the roller 222A is disengaged from the roller groove 232A, and is a plan view of the inner holder assembly 233A. Fig. 16A is a cross-sectional view showing the thrust roller bearing 201 according to the fourth embodiment of the present invention in a state including the rail wheels 206 and 207. Figure 16B is an expanded cross-sectional view of Figure 16A. Fig. 17 is a cross-sectional view showing a state in which the rail wheels 206 and 207 and the rollers 222A and 222B are omitted from the state shown in Fig. 16A.
第4實施形態中,主要係以和第3實施形態的不同點為主軸進行說明,且以符號+100表示和第3實施形態相同的構成。第4實施形態中未特別說明的部分適用第3實施形態的相關說明及第1實施形態的相關說明。再者,第4實施形態中,可達成和第3實施形態及第1實施形態相同的效果。 In the fourth embodiment, the difference from the third embodiment will be mainly described as a main axis, and the same configuration as that of the third embodiment will be denoted by reference numeral +100. The description of the third embodiment and the related description of the first embodiment are applied to the portions which are not particularly described in the fourth embodiment. Further, in the fourth embodiment, the same effects as those of the third embodiment and the first embodiment can be achieved.
第4實施形態的推力滾柱軸承201係為承受推力負載及徑向負載的推力滾柱軸承,如圖14A至圖17所示,具備:由輻射狀排列於軌道面261a、271a的複數個滾柱222所構成的滾柱群202、具有滾柱槽232之保持器203、外側的軌道輪206、及內側的軌道輪207,該滾柱槽232係收容構成滾柱群202之滾柱222。 The thrust roller bearing 201 of the fourth embodiment is a thrust roller bearing that receives a thrust load and a radial load. As shown in FIGS. 14A to 17 , the thrust roller bearing 201 includes a plurality of rollers that are radially arranged on the raceway surfaces 261a and 271a. A roller group 202 composed of a column 222, a holder 203 having a roller groove 232, an outer rail wheel 206, and an inner rail wheel 207 for accommodating the rollers 222 constituting the roller group 202.
在第4實施形態中,如圖14A、圖14B、圖16A、圖16B所示,在滾柱222的輻射方向DD排列有複數列滾柱群202(202A、202B)(在本實施形態中為2列)。作為轉動體的滾柱222具有朝向滾柱222的輻射方向DD的內側窄縮的大致圓錐形狀「圓錐滾柱」。 In the fourth embodiment, as shown in Figs. 14A, 14B, 16A, and 16B, a plurality of rows of roller groups 202 (202A, 202B) are arranged in the radiation direction DD of the roller 222 (in the present embodiment, 2 columns). The roller 222 as a rotor has a substantially conical "tapered roller" that is narrowed toward the inside of the radiation direction DD of the roller 222.
如圖16A、圖16B所示,外側的軌道輪206具有支撐滾柱(圓錐滾柱)222的側的軌道面261a,內側的軌道輪207具有藉滾柱(圓錐滾柱)222支撐的側的軌道面271a。軌道面261a和271a的隔開間隔係對應滾柱222的大致圓錐形狀,而隨著從輻射方向DD的外周側朝向內周側形成以相同比例逐漸縮小的推拔狀。 As shown in FIGS. 16A and 16B, the outer rail wheel 206 has a rail surface 261a on the side supporting the roller (taper roller) 222, and the inner rail wheel 207 has a side supported by a roller (taper roller) 222. Track surface 271a. The interval between the raceway surfaces 261a and 271a corresponds to the substantially conical shape of the roller 222, and a push-down shape that is gradually reduced in the same ratio is formed from the outer peripheral side toward the inner peripheral side from the radiation direction DD.
如圖16A、圖16B所示,輻射方向DD內側的滾柱群202A的各滾柱222A的外側端直徑係小於輻射方向DD外側的滾柱群202B的各滾柱222B的內側端直徑。輻射方向DD內側保持器組件233A的厚度則比輻射方向DD外側保持器組件233B的厚度還薄。 As shown in FIGS. 16A and 16B, the diameter of the outer end of each of the rollers 222A of the roller group 202A inside the radiation direction DD is smaller than the diameter of the inner end of each of the rollers 222B of the roller group 202B outside the radiation direction DD. The thickness of the inner retainer assembly 233A in the radiation direction DD is then thinner than the thickness of the outer retainer assembly 233B in the radial direction DD.
內側保持器組件233A的滾柱槽232A的大小係和內側的滾柱222A對應。亦即,在滾柱222A收容於滾柱槽232A的狀態中,滾柱222A不會從滾柱槽232A的外側開放端部241往輻射方向DD的外側突出,或大致保持在同一平面。在滾柱222A收容於滾柱槽232A的狀態中,滾柱222A係經由滾柱槽232A的厚度方向開放部243,比內側保持器組件233A更突出於保持器組件233A的厚度方向DT。因此,滾柱槽232A會限制滾柱222A不致從滾柱槽232A的厚度方向開放部243脫出。 因而不會有滾柱222A從滾柱槽232A的厚度方向開放部243脫出的情形。滾柱222A只可經由外側開放端部241朝向輻射方向DD的內側插入滾柱槽232A,已插入滾柱槽232A的滾柱222A只能經由外側開放端部241朝輻射方向DD的外側脫出。 The size of the roller groove 232A of the inner holder assembly 233A corresponds to the inner roller 222A. That is, in a state in which the roller 222A is housed in the roller groove 232A, the roller 222A does not protrude from the outer open end portion 241 of the roller groove 232A toward the outside in the radiation direction DD, or substantially remains on the same plane. In a state in which the roller 222A is housed in the roller groove 232A, the roller 222A protrudes in the thickness direction DT of the holder assembly 233A from the inner holder assembly 233A via the thickness direction opening portion 243 of the roller groove 232A. Therefore, the roller groove 232A restricts the roller 222A from coming out of the opening portion 243 in the thickness direction of the roller groove 232A. Therefore, there is no possibility that the roller 222A is detached from the thickness direction opening portion 243 of the roller groove 232A. The roller 222A can be inserted into the roller groove 232A only via the outer open end portion 241 toward the inner side in the radiation direction DD, and the roller 222A inserted into the roller groove 232A can only be pulled out to the outside in the radiation direction DD via the outer open end portion 241.
外側保持器組件233B的滾柱槽232B的大小係和外側滾柱222B對應。亦即,在滾柱222B收容於滾柱槽232B的狀態中,滾柱222B不會從滾柱槽232B的外側開放端部241往輻射方向DD的外側突出、或大致保持在同一平面。在滾柱222B收容於滾柱槽232B的狀態中,滾柱222B係經由滾柱槽232B的厚度方向開放部243,比外側保持器組件233B更突出於保持器組件233B的厚度方向DT。滾柱槽232B會限制滾柱222B不致從滾柱槽232B的厚度方向開放部243脫出。因此,不會有滾柱222B從滾柱槽232B的厚度方向開放部243脫出的情形。滾柱222B只能經由外側開放端部241朝輻射方向DD的內側插入滾柱槽232B,已插入滾柱槽232B的滾柱222B也只能經由外側開放端部241朝輻射方向DD的外側脫出。 The size of the roller groove 232B of the outer holder assembly 233B corresponds to the outer roller 222B. That is, in a state in which the roller 222B is housed in the roller groove 232B, the roller 222B does not protrude from the outer open end portion 241 of the roller groove 232B to the outside in the radiation direction DD, or substantially maintains the same plane. In a state in which the roller 222B is housed in the roller groove 232B, the roller 222B protrudes in the thickness direction DT of the holder assembly 233B from the outer holder assembly 233B via the thickness direction opening portion 243 of the roller groove 232B. The roller groove 232B restricts the roller 222B from coming out of the opening portion 243 in the thickness direction of the roller groove 232B. Therefore, there is no possibility that the roller 222B is detached from the opening portion 243 in the thickness direction of the roller groove 232B. The roller 222B can only be inserted into the roller groove 232B through the outer open end portion 241 toward the inner side in the radiation direction DD, and the roller 222B inserted into the roller groove 232B can only be pulled out to the outside of the radiation direction DD via the outer open end portion 241. .
構成輻射方向DD外側滾柱群202B的滾柱222B的個數(本實施形態中為8個)係多於構成輻射方向DD內側滾柱群202A的滾柱222A的個數(本實施形態中為6個)。 The number of the rollers 222B (eight in the present embodiment) constituting the outer roller group 202B in the radiation direction DD is larger than the number of the rollers 222A constituting the inner roller group 202A in the radiation direction DD (in the present embodiment, 6).
如圖16A所示,輻射方向DD內側之滾柱群202A的任意第1滾柱222Am的中心軸與輻射方向DD 外側之滾柱群202B的任意第2滾柱222Bn的中心軸一致時,第1滾柱222Am及第2滾柱222Bn係構成由兩者連結而成的假想大致圓錐狀長型滾柱222C的各個部分。 As shown in FIG. 16A, the central axis of the first roller 222Am of the roller group 202A inside the radiation direction DD and the radiation direction DD When the central axes of the arbitrary second rollers 222Bn of the outer roller group 202B match, the first roller 222Am and the second roller 222Bn constitute each of the virtual substantially conical long rollers 222C that are connected by the two. section.
若依第4實施形態,可達到和第3實施形態相同的效果。若依第4實施形態,也可達到和第1實施形態相同的效果。而且,若依第4實施形態,相較於在1列滾柱群中使用長滾柱的情況,滾柱222的長度可以縮短,又可縮小輻射方向DD的滾柱222之圓周速率差,且可減少滾柱222的打滑。結果,可以抑制因滾柱222打滑所引起的各種缺失(因滑動摩擦而使軌道面261a、271a和滾柱222之間的旋轉阻力增加,在外周側滾柱222或軌道面261a、271a摩損增多等)。 According to the fourth embodiment, the same effects as those of the third embodiment can be obtained. According to the fourth embodiment, the same effects as those of the first embodiment can be achieved. Further, according to the fourth embodiment, the length of the roller 222 can be shortened as compared with the case where the long roller is used in the one-row roller group, and the circumferential speed difference of the roller 222 in the radiation direction DD can be reduced, and The slip of the roller 222 can be reduced. As a result, various kinds of defects caused by the slip of the roller 222 can be suppressed (the rotational resistance between the raceway surfaces 261a, 271a and the roller 222 is increased by the sliding friction, and the wear of the outer peripheral roller 222 or the raceway surfaces 261a, 271a is increased. Wait).
上文中雖已就本發明的較佳實施形態作了說明。然而,本發明並不限定於上述的實施形態,而是可以各種形態實施。 The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and can be implemented in various forms.
第1實施形態及第2實施形態中,滾柱群2及滾柱槽群31的列數也可為3列以上。在此情況中,鄰接在輻射方向DD的每個保持器組件33中,構成滾柱群2的滾柱22的個數以增多為宜。第1實施形態及第2實施形態的滾柱群2及滾柱槽群31的列數也可為1列。 In the first embodiment and the second embodiment, the number of rows of the roller group 2 and the roller groove group 31 may be three or more. In this case, it is preferable that the number of the rollers 22 constituting the roller group 2 is increased in each of the holder assemblies 33 adjacent to the radiation direction DD. The number of rows of the roller group 2 and the roller groove group 31 of the first embodiment and the second embodiment may be one column.
構成滾柱群2的滾柱22個數並不受限制。可在1個滾柱槽32中朝軸向排列收容複數個滾柱22。 The number of the rollers 22 constituting the roller group 2 is not limited. A plurality of rollers 22 can be accommodated in the axial direction in one of the roller grooves 32.
在每個保持器組件33或保持器3整體上,複數個滾柱22的直徑可相同,也可不同。 The diameter of the plurality of rollers 22 may be the same or different in each of the holder assembly 33 or the holder 3.
滾柱槽32的構造也不限制於前述實施形態中的滾柱槽32構造。滾柱槽32也可具有限制滾柱22不會從滾柱槽32的輻射方向DD的外側開放端部41脫出的構造。 The structure of the roller groove 32 is also not limited to the structure of the roller groove 32 in the above embodiment. The roller groove 32 may have a structure that restricts the roller 22 from coming off the outer open end portion 41 of the roller groove 32 in the radiation direction DD.
茲參佐圖18A、圖18B及圖19就第1變形例加以說明。圖18A為第1變形例的立體圖,係顯示外座圈6A。圖18B為第1變形例的立體圖,係顯示內座圈7A。圖19係為第1變形例的剖面圖,屬於圖8B的對應圖。 The first modification will be described with reference to Figs. 18A, 18B and 19. Fig. 18A is a perspective view showing a first modification, showing the outer race 6A. Fig. 18B is a perspective view showing a first modification, showing the inner race 7A. Fig. 19 is a cross-sectional view showing a first modification and pertaining to the corresponding diagram of Fig. 8B.
如圖18A、圖14B及圖19所示,在第1變形例中,外座圈6A以一體方式具備:環狀軌道部61,形成有供複數個滾柱22轉動的軌道面61a;短圓筒狀外周壁部62,和軌道面61a正交地自軌道部61的外周端延伸;圓筒狀支持周壁部63,和軌道面61a正交地自軌道部61的內周端延伸;及第1止脫卡合部64。支持周壁部63係相對於軌道部61向外周壁部62的相反側延伸。第1止脫卡合部64為向輻射方向DD的外側凹陷的凹部,且以朝圓周方向DR延伸的方式呈環狀設在外周壁部62的內周部。 As shown in FIG. 18A, FIG. 14B and FIG. 19, in the first modification, the outer race 6A is integrally provided with an annular rail portion 61, and a raceway surface 61a for rotating a plurality of rollers 22 is formed; The cylindrical outer peripheral wall portion 62 extends from the outer peripheral end of the rail portion 61 orthogonally to the raceway surface 61a; the cylindrical support peripheral wall portion 63 extends from the inner peripheral end of the rail portion 61 orthogonally to the raceway surface 61a; 1 The snap-off portion 64 is closed. The support peripheral wall portion 63 extends on the opposite side of the outer peripheral wall portion 62 with respect to the rail portion 61. The first retaining engagement portion 64 is a recess that is recessed outward in the radiation direction DD and is annularly provided on the inner peripheral portion of the outer peripheral wall portion 62 so as to extend in the circumferential direction DR.
內座圈7A以一體方式具備:環狀的軌道部71,形成有供複數個滾柱22轉動的軌道面71a;圓筒狀的內周壁部72A,和軌道面71a正交地自軌道部71的內周端延伸;及第2止脫卡合部74。第2止脫卡合部74係為向輻射方向DD外側突出的凸部,以延伸於圓周方向DR的方式呈環狀設在軌道部71的外周部。 The inner race 7A is integrally provided with an annular rail portion 71 formed with a raceway surface 71a for rotating a plurality of rollers 22, and a cylindrical inner peripheral wall portion 72A orthogonal to the rail portion 71a from the rail portion 71. The inner peripheral end extends; and the second retaining engagement portion 74. The second retaining engagement portion 74 is a convex portion that protrudes outward in the radiation direction DD, and is provided in an annular shape on the outer peripheral portion of the rail portion 71 so as to extend in the circumferential direction DR.
如圖19所示,在保持器3配置於外座圈6A與內座圈7A之間的狀態中,第2止脫卡合部74係配置在第1止脫卡合部64,第1止脫卡合部64和第2止脫卡合部74卡合。 As shown in FIG. 19, in a state in which the retainer 3 is disposed between the outer race 6A and the inner race 7A, the second retaining engagement portion 74 is disposed in the first retaining engagement portion 64, and the first stop The detachment engagement portion 64 and the second detachment engagement portion 74 are engaged.
在該狀態中,可防止內座圈7A從外座圈6A脫出。再者,因為第1止脫卡合部64及第2止脫卡合部74皆為延伸於圓周方向DR的環狀,故內座圈7A相對於外座圈6A的旋轉沒有實質上的阻礙。亦即,若依此種構成,可以兼具防止內座圈7A從外座圈6A的脫出及內座圈7A相對於外座圈6A的順暢旋轉。再者,因外座圈6A的軌道面61a與內座圈7A的軌道面71a的間隔得以維持,所以能實現滾柱22相對於外座圈6A及內座圈7A的順暢轉動。 In this state, the inner race 7A can be prevented from coming off the outer race 6A. Further, since the first retaining engagement portion 64 and the second retaining engagement portion 74 are both annularly extending in the circumferential direction DR, the inner race 7A is not substantially hindered from the rotation of the outer race 6A. . That is, according to this configuration, it is possible to prevent the inner race 7A from coming off the outer race 6A and the inner race 7A from rotating smoothly with respect to the outer race 6A. Further, since the interval between the raceway surface 61a of the outer race 6A and the raceway surface 71a of the inner race 7A is maintained, smooth rotation of the roller 22 with respect to the outer race 6A and the inner race 7A can be achieved.
如圖19所示,內座圈7A的內周壁部72A係插入於外座圈6A的支持周壁部63。因此,內座圈7A可相對於外座圈6A順暢旋轉。 As shown in Fig. 19, the inner peripheral wall portion 72A of the inner race 7A is inserted into the support peripheral wall portion 63 of the outer race 6A. Therefore, the inner race 7A can smoothly rotate with respect to the outer race 6A.
再參佐圖20就第2變形例加以說明。圖20係為第2變形例的俯視圖,屬於圖1A的對應圖。 Referring to Fig. 20, a second modification will be described. Fig. 20 is a plan view showing a second modification, and corresponds to the corresponding diagram of Fig. 1A.
如圖20所示,滾柱群2係朝滾柱22的輻射方向DD配設1列。保持器3A在其外周部具備環狀的防脫構件36。防脫構件36的內周部係和和保持器3A的滾柱槽32的外側開放端部41相對向,因此,可發揮阻止滾柱22從滾柱槽32的外側開放端部41脫出的功能。 As shown in FIG. 20, the roller group 2 is disposed in one row in the radiation direction DD of the roller 22. The retainer 3A is provided with an annular retaining member 36 at its outer peripheral portion. Since the inner peripheral portion of the retaining member 36 faces the outer open end portion 41 of the roller groove 32 of the retainer 3A, the roller 22 can be prevented from coming off the outer open end portion 41 of the roller groove 32. Features.
另外,可以將防脫構件36設置成如圖1A所示的滾柱群2朝滾柱22的輻射方向DD配設複數列的樣態。 Further, the retaining member 36 may be disposed such that the roller group 2 as shown in FIG. 1A is arranged in a plurality of rows in the radiation direction DD of the roller 22.
前述或後述的各種構成可適當加以組合。例如,可將第3實施形態中保持圓錐滾柱122的保持器103和第1實施形態或第2實施形態中由圓筒狀滾柱22構成的滾柱群2朝輻射方向DD配設複數列的構成組合,以取代和圓錐滾柱122對應的外側軌道輪106及內側軌道輪107。在此情況中,外側的軌道輪和內側的軌道輪之間係對應圓筒狀的滾柱22的外周面作平行配置。 The various configurations described above or described below can be combined as appropriate. For example, in the holder 103 holding the tapered roller 122 in the third embodiment, and the roller group 2 including the cylindrical roller 22 in the first embodiment or the second embodiment, the plurality of columns can be arranged in the radiation direction DD. The combination is configured to replace the outer rail wheel 106 and the inner rail wheel 107 corresponding to the tapered roller 122. In this case, the outer peripheral surface of the cylindrical roller 22 is disposed in parallel with each other between the outer rail wheel and the inner rail wheel.
第3實施形態中可應用第1變形例及第2變形例的構成。例如,可將和第3實施形態的外側軌道輪106及內側軌道輪107相當的部分分別設在殼體及軸狀的旋轉構件。 In the third embodiment, the configurations of the first modification and the second modification can be applied. For example, the portions corresponding to the outer rail wheel 106 and the inner rail wheel 107 of the third embodiment may be provided in the casing and the shaft-shaped rotating member, respectively.
1‧‧‧推力滾柱軸承 1‧‧‧Thrust roller bearings
2、2A、2B‧‧‧滾柱群 2, 2A, 2B‧‧‧ Roller Group
3、3A、3B‧‧‧保持器 3, 3A, 3B‧‧‧ retainers
22、22A、22B‧‧‧滾柱 22, 22A, 22B‧‧ ‧ Roller
31、31A、31B‧‧‧滾柱槽群 31, 31A, 31B‧‧‧ Roller groove group
32、32A、32B‧‧‧滾柱槽 32, 32A, 32B‧‧‧roller slots
33、33A、33B‧‧‧保持器組件 33, 33A, 33B‧‧‧ keeper assembly
35、35A、35B‧‧‧扣合部 35, 35A, 35B‧‧‧Deduction Department
DR‧‧‧圓周方向 DR‧‧‧ circumferential direction
DD‧‧‧輻射方向 DD‧‧‧radiation direction
J1‧‧‧旋轉軸 J1‧‧‧Rotary axis
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2015157370 | 2015-08-07 |
Publications (1)
Publication Number | Publication Date |
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TW201712240A true TW201712240A (en) | 2017-04-01 |
Family
ID=57984385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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TW105124763A TW201712240A (en) | 2015-08-07 | 2016-08-04 | Thrust roller bearing |
Country Status (3)
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JP (1) | JP6762796B2 (en) |
TW (1) | TW201712240A (en) |
WO (1) | WO2017026353A1 (en) |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP6914712B2 (en) * | 2017-04-26 | 2021-08-04 | 透一 野渡 | Tapered roller bearing |
US11162534B1 (en) * | 2020-04-29 | 2021-11-02 | Schaeffler Technologies AG & Co. KG | Multiple row thrust bearings |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000240645A (en) * | 1999-02-22 | 2000-09-05 | Nkk Corp | Thrust bearing |
JP2005083467A (en) * | 2003-09-08 | 2005-03-31 | Nsk Ltd | Cylindrical roller bearing |
JP2005331054A (en) * | 2004-05-21 | 2005-12-02 | Ntn Corp | Tapered roller bearing, and structure for supporting pilot portion shaft of transmission |
-
2016
- 2016-08-01 JP JP2016151422A patent/JP6762796B2/en not_active Expired - Fee Related
- 2016-08-03 WO PCT/JP2016/072831 patent/WO2017026353A1/en active Application Filing
- 2016-08-04 TW TW105124763A patent/TW201712240A/en unknown
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JP6762796B2 (en) | 2020-09-30 |
JP2017036831A (en) | 2017-02-16 |
WO2017026353A1 (en) | 2017-02-16 |
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