WO2017071138A1 - 一种滚动轴承 - Google Patents

一种滚动轴承 Download PDF

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Publication number
WO2017071138A1
WO2017071138A1 PCT/CN2016/073161 CN2016073161W WO2017071138A1 WO 2017071138 A1 WO2017071138 A1 WO 2017071138A1 CN 2016073161 W CN2016073161 W CN 2016073161W WO 2017071138 A1 WO2017071138 A1 WO 2017071138A1
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WIPO (PCT)
Prior art keywords
concave curved
curved surface
rolling bearing
bearing according
conical
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PCT/CN2016/073161
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English (en)
French (fr)
Inventor
蔡东青
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广东奥飞动漫文化股份有限公司
广东奥迪动漫玩具有限公司
广州奥飞文化传播有限公司
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Application filed by 广东奥飞动漫文化股份有限公司, 广东奥迪动漫玩具有限公司, 广州奥飞文化传播有限公司 filed Critical 广东奥飞动漫文化股份有限公司
Publication of WO2017071138A1 publication Critical patent/WO2017071138A1/zh

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H1/00—Tops
    • A63H1/30—Climbing tops, e.g. Yo-Yo
    • 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
    • F16C33/58—Raceways; Race rings

Definitions

  • the invention relates to a bearing structure, in particular to a rolling bearing.
  • Rolling bearings are now mostly made of concave curved and "V" shaped surfaces, as in US Pat. No. 7,175,500 and Chinese patent CN201210089146.9, both of which disclose that the bearing is a concave curved surface, such a design
  • the ropes are repeatedly placed on the outer surface of the bearing. Try to avoid the rope touching the side wall surfaces of the two spheres, so that the rope on the bearing is more concentrated on the bearing. The center makes the yo-yo idling longer and can play more fancy.
  • the outer peripheral surface of the bearing is completely an arc groove and a straight line, so that the rope line is quickly concentrated to the middle, so when a multi-strand rope line appears in the move When connected to the outer peripheral surface, these multi-strand ropes will rub against each other, increasing the friction, so it is easy to cause the yo-yo to stop rotating; and if the angle of the concave curved surface or the "V"-shaped surface is too large, Lose the function of concentrating the ropes in the middle.
  • a rolling bearing comprising an outer ring, an inner ring and a ball between the outer ring and the inner ring, which is characterized by an axial central portion of the outer peripheral surface of the outer ring
  • the concave curved surface is provided, and each side of the concave curved surface is respectively provided with at least two conical surfaces, and the conical surfaces of the two opposite ends of the concave curved surface are smoothly butted with the concave curved surface, and the adjacent two conical surfaces are respectively
  • a smooth transition between the outer circumferential surfaces of the outer ring forms a smooth continuous concave surface.
  • the taper angle of the conical surface close to the concave curved surface is larger than the far angle The cone angle of the conical surface of the concave surface.
  • the concave folding surface is symmetrical about its axial center position.
  • the concave curved surface and the two conical surfaces adjacent to the concave curved surface form a concave position for the tying of the plurality of yo-yo balls.
  • the length of each segment of the conical surface on the same side of the concave curved surface of the present invention can be three ways: the first is that the length of the conical surface near the concave curved surface is greater than the length of the conical surface away from the concave curved surface; The length of the conical surface near the concave curved surface is smaller than the length of the conical surface away from the concave curved surface; it is of course also possible that all conical surfaces have the same length.
  • the length of these conical faces refers to the length of the conical surface of the segment along its generatric direction, that is, the length of the bus bar, and the length of the conical surface of the invention is from 0.5 mm to 1.5 mm.
  • the concave curved surface of the present invention is a circular arc surface which is integrally recessed toward the radial direction of the bearing, and may also be a paraboloid which is entirely recessed toward the radial direction of the bearing. Therefore, when the fancy action is made, the rope is wound around the bearing and can be kept concentrated in the middle of the bearing, thereby maintaining the overall balance of the yo-yo.
  • the concave curved surface of the present invention is an arc surface
  • the arc surface preferably has a radius of 0.1 mm to 4 mm.
  • the concave curved surface is a circular arc surface having a radius of 0.2 mm.
  • the ideal design is that the central angle formed by the two ends of the concave curved surface and the center line thereof is less than 90°; of course, the two ends of the concave curved surface are not excluded from the center of the concave curved surface.
  • the central angle formed by the connection is 90°-180°; even the case where the central angle formed is greater than 180°.
  • the outer peripheral surface of the outer ring further includes a toroidal surface at the edge that perpendicularly intersects the end surface of the outer ring.
  • the toroidal surface is smoothly butted to the adjacent conical surface.
  • the torus of the present invention preferably has a width of from 0 mm to 0.5 mm, i.e., satisfies the width that is held by the appliance and can be maintained firmly.
  • the preferred width of the torus is 0.2 mm.
  • the present invention also provides a yo-yo which is characterized by including the above-described rolling bearing.
  • the invention adopts a concave curved surface in the axial central portion of the outer ring of the yo-yo ball bearing, and at least two conical surfaces are respectively disposed on each side of the concave curved surface, so that compared with the existing outer peripheral surface,
  • the design of the concave curved surface or the "V" shaped surface, these conical surfaces form a cushioning slope, which allows the rope to stay on the bearing in sections, thereby reducing the mutual friction between the ropes, so that the yo-yo moves smoothly
  • the taper angle of the conical surface near the concave curved surface of the conical surface on the same side of the concave curved surface is larger than the taper angle of the conical surface away from the concave curved surface, so that the function of allowing the rope to be segmented on the bearing can be retained.
  • the rope can be concentrated in the concave surface formed between the concave curved surface and the two conical surfaces adjacent to the concave curved surface, thereby avoiding the friction between the rope and the yo-yo sphere, and increasing the rotation time of the yo-yo; applying the bearing When the yo-yo is doing horizontal trajectory, the yo-yo is horizontally rotated. At this time, the rope can be hung on the conical surface with a small slope on the periphery of the bearing for a long time, so that the horizontal trajectory is completed more smoothly and smoother.
  • the edge of the bearing is provided with a toroidal surface perpendicularly intersecting the end surface of the outer ring, which can better solve the problem of clamping processing.
  • the bearing design of the invention is more ingenious and reasonable, and more effectively solves the technical problems existing in the existing bearing, so that the performance of the yo-yo is further improved.
  • Figure 1 is a schematic perspective view of the present invention.
  • Fig. 2 is a cross-sectional structural view showing a first embodiment of the present invention.
  • FIG 3 is a cross-sectional structural view of a second embodiment of the present invention.
  • Figure 4 is an enlarged schematic view of a portion X of Figure 2.
  • Figure 5 is an enlarged schematic view of a portion Y of Figure 3.
  • Figure 6 is a perspective view showing the three-dimensional structure of the multi-segment rope of the present invention lapped on the bearing.
  • Figure 7 is a schematic view of the front structure of Figure 6.
  • a rolling bearing includes an outer ring 1, an inner ring 2, and balls 3 between the outer ring 1 and the inner ring 2, wherein the outer circumference of the outer ring 1
  • the axial center portion is defined as a concave curved surface 4, and each side of the concave curved surface 4 is respectively provided with at least two conical surfaces 5, and the conical surfaces 5 at the two opposite ends of the concave curved surface 4 are smoothly connected with the concave curved surface 4, respectively.
  • the smooth transition between the adjacent two conical surfaces 5 causes the outer peripheral surface of the outer ring 1 to form a smooth continuous concave surface, so that the outer peripheral surface is a concave curved surface or a "V" shaped surface.
  • These conical surfaces form a cushioning slope, which allows the rope to stay in sections on the bearing, thereby reducing the mutual friction between the ropes, so that the yo-yo moves smoothly.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the outer ring 1 of the bearing of this embodiment has an outer diameter of 15.4 mm
  • the inner ring 2 has an inner diameter of 10 mm
  • the outer peripheral surface of the bearing includes a concave curved surface 4 and four having an axial central portion.
  • a segmental conical surface 5 having two conical surfaces 5 on each side of each of the concave curved surfaces 4, the concave curved surface 4 being located at an axially central portion of the outer circumferential surface of the bearing outer ring 1, the concave curved surface 4 having a radius of 0.2 mm,
  • the concave curved surface 4 The minimum end distance from the outer peripheral surface is from 0.5 mm to 1 mm, and the central angle ⁇ formed by the two ends of the concave curved surface 4 and its center line is an acute angle, as shown in FIG.
  • the central angle ⁇ is about 74°;
  • the two-section conical surface 5 adjacent to the concave curved surface 4 in this embodiment is defined as a C-cone surface and a D-cone surface, which are respectively tangently connected to both ends of the concave curved surface 4, and are located at the C-cone surface.
  • the conical surface 5 outside is defined as an A conical surface, which is connected by a chamfer between the C conical surface; the conical surface 5 outside the D conical surface is defined as a B conical surface, the B conical surface and the D cone The faces are also connected by chamfering; wherein the lengths of the C-cone and the D-cone are longer than the lengths of the A-cone and the B-cone, and the length here refers to the length of the conical surface along the direction of the bus, the embodiment
  • the length of the C-cone surface and the D-cone surface is 1 mm to 1.5 mm; and the lengths of the A conical surface and the B conical surface are approximately 0.5 mm to 1 mm.
  • the cone angles of the C-cone surface and the D-cone surface are the same, both are ⁇ ; and the cone angles of the A-cone surface and the B-cone surface are the same, both being ⁇ .
  • the alpha angle of this embodiment is greater than the beta angle.
  • a toroidal surface 6 perpendicular to the end surface of the outer ring 1 is provided at the outer peripheral edge of the bearing, and the toroidal surface 6 is connected to the A conical surface or the B conical surface for facilitating the clamping. Therefore, the machining accuracy can be improved, and the performance of the yo-yo using the bearing can be improved.
  • the design as shown in Figure 2 is for the player to play the yo-yo fancy game, the multi-segment rope 8 is lapped on the outer peripheral surface of the bearing, which can effectively prevent the rope 8 from touching the side wall surfaces of the two spheres, allowing the lap joint
  • the rope 8 on the bearing is more concentrated on the concave curved surface 4 of the bearing and the concave surface formed by the C-cone surface and the D-cone surface, and the conical surface 5 of the A-cone surface and the B-cone surface form a cushioning slope, which can make the rope
  • the line 8 is suspended in sections on the bearing, thereby reducing the mutual friction between the strings 8, so that the yo-yo moves are smoothly completed.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the bearing size of this embodiment is the same as that of the first embodiment except that the concave curved surface 4 of the embodiment is changed.
  • the concave curved surface 4 of this embodiment has a distinct concave feeling, and the concave curved surface of this embodiment 4 is also a circular arc surface.
  • the lowest end of the concave curved surface 4 is deeper than the outer peripheral surface, and the central angle ⁇ formed by the two ends of the concave curved surface 4 and its center line becomes an obtuse angle, as shown in FIG.
  • the central angle ⁇ is about 175°; this embodiment also has a total of four conical surfaces 5, and the conical surface 5 of the conical surface 5 near the concave curved surface 4 in the two conical surfaces 5 on the same side of the concave curved surface 4 is larger than the concave curved surface.
  • the taper angle of the conical surface 5 of 4, that is, the angle ⁇ is larger than the angle ⁇ .
  • the concave curved surface 4 thus designed can better concentrate the string 8 on the outer peripheral surface of the bearing at the center position of the bearing; in this embodiment, the length of the conical surface near the concave curved surface 4 is smaller than the conical surface away from the concave curved surface 4.
  • the length of 5 is much shorter, and the length of the conical surface 5 far from the concave curved surface 4 is much longer than the length of the conical surface 5 away from the concave curved surface 4 of the first embodiment, so that the length of the buffer can be effectively increased, and the string is made It can slowly gather to the intermediate position; at the same time, the rope 8 can be concentrated in the concave curved surface 4 of the concave depth, which can effectively reduce the friction between the rope 8 and the sphere, and increase the rotation time of the yo-yo.
  • the yo-yo of this embodiment comprises a bearing, two discs 7, a connecting shaft and a rope 8 as described above, the two ends of which are connected to the two opposite disc bodies 7, and the bearing is located in two discs
  • the inner ring 2 between the bodies 7 and the bearing passes through the connecting shaft, and then is fastened to the outer peripheral surface of the outer ring 1 of the bearing by the rope 8, that is, the assembly of the yo-yo is completed, and the rope 8 is automatically located at this time.
  • the central position of the outer peripheral surface of the bearing that is, the position of the concave curved surface 4; after the high speed of the yo-yo is rotated, various fancy actions can be started, as shown in Fig. 6, the rope 8 is overlapped four times on the bearing. At this time, there are five sections on the outer peripheral surface of the bearing, which are respectively overlapped on the concave curved surface 4 and the conical surface 5, but are basically concentrated on the concave curved surface 4 and the conical surface 5 near the concave curved surface 4, as shown in FIG.
  • the bearing When the yo-yo is doing a horizontal stroke (that is, a move made when the yo-yo is horizontally rotated), the bearing has a cushioning effect on the outer conical surface 5, and the horizontal movement is caused by the yo-yo when the horizontal skill is performed, and the rope 8 It can be hung on the conical surface 5 with a small slope on the periphery of the bearing for a long time, so that the horizontal skill is completed more smoothly and starts up. Come more smoothly.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

一种滚动轴承，包括外圈（1）、内圈（2）和位于外圈和内圈之间的滚珠（3），该外圈外周面的轴向中央部设为凹曲面（4），该凹曲面（4）两侧的每一侧分别设置有至少两段圆锥面（5），且位于凹曲面（4）两个对接端的圆锥面（5）分别与该凹曲面（4）平滑对接，相邻的两段圆锥面（5）之间平滑过渡，使外圈（1）的外周面形成光滑连续的凹折表面，这些圆锥面形成一个缓冲的坡度，能让绳线在轴承上分段停留，又能缓慢集中在轴承的中部位置，从而减少绳线间的相互摩擦，又可避免绳线与悠悠球的球体摩擦，增加悠悠球的旋转时间，使得悠悠球的招式顺畅完成。

Description

一种滚动轴承 技术领域
本发明涉及一种轴承结构，具体是一种滚动轴承。
背景技术
滚动轴承现在很多都做成表面有凹弧形和“V”形的面，就像美国专利US7175500和中国专利CN201210089146.9，这两个专利都公开了其轴承是一个凹弧形面，这样的设计是为了玩家在玩悠悠球的花式玩法时，绳线重复多段搭在轴承外表面上，尽量避免绳线触碰到两个球体的侧壁面，让圈在轴承上的绳线更加集中在轴承的中心，使悠悠球的空转时间更长，能玩更多的花式。但无论是凹弧形的面还是“V”形的面，其轴承的外周面完全是一条弧凹线和直线，故会让绳线快速集中到中间，故当招式中出现多股绳线搭接在外周面上时，这些多股绳线会相互摩擦，增大了摩擦力，故很容易导致悠悠球停止转动；而若将凹弧形面或“V”形面的角度过大，则失去将绳线集中在中间的功能。
在悠悠球做横技招式(即悠悠球横着呈水平转动时做的招式)时，现有的滚动轴承，无论是凹弧形面还是“V”形面，招式形成的强大离心力会让叠起来的线全部快速地叠在凹槽的最深处，绳线叠在一起做招式就会让悠悠球回收或突然停止。
发明内容
针对上述现有技术所存在的问题，本发明的目的是提供一种能做出更多复杂的搭线招式又不影响悠悠球旋转性能的滚动轴承。
为达到上述目的，本发明所采用的技术方案是：一种滚动轴承，包括外圈、内圈以及位于外圈和内圈之间的滚珠，其特点是所述外圈外周面的轴向中央部设为凹曲面，该凹曲面两侧的每一侧分别设置有至少两段圆锥面，且位于所述凹曲面两个对接端的圆锥面分别与该凹曲面平滑对接，相邻的两段圆锥面之间平滑过渡，使所述外圈的外周面形成光滑连续的凹折表面。
为了能让绳线在轴承上分段停留，且逐渐向中部靠拢，在所述凹曲面同一侧的各段圆锥面中，靠近所述凹曲面的圆锥面的锥角均大于远离所述 凹曲面的圆锥面的锥角。
进一步为了能更好的保证该滚珠轴承在使用时平稳性更佳，所述凹折表面关于其轴向中央位置对称。
为了能更好做出复杂的搭线招式，所述凹曲面与该凹曲面相邻的两段圆锥面之间形成供多股悠悠球的绳线搭接的凹位。
本发明在凹曲面同一侧的各段圆锥面的长度，可以有三种方式：第一种是靠近所述凹曲面的圆锥面的长度大于远离所述凹曲面的圆锥面的长度；第二种是靠近所述凹曲面的圆锥面的长度小于远离所述凹曲面的圆锥面的长度；当然也可以是所有的圆锥面的长度均相同。这些圆锥面的长度是指该段圆锥面沿其母线方向的长度，即母线长度，该发明的圆锥面的长度为0.5mm-1.5mm。
本发明的凹曲面为整体向轴承的径向凹陷的圆弧面，还可以为整体向轴承的径向凹陷的抛物面。故在做花式动作时，绳线缠绕在轴承上也能保持集中在轴承中部位置，从而保持悠悠球的整体平衡性。
本发明的凹曲面为圆弧面时，所述圆弧面较为理想的半径值为0.1mm-4mm的圆弧面。
进一步的，其最佳效果是，所述凹曲面为半径0.2mm的圆弧面。
当凹曲面为圆弧面时，较为理想的设计是，所述凹曲面的两端与其圆心连线所形成的圆心角小于90°；当然，也不排除将所述凹曲面的两端与其圆心连线所形成的圆心角为90°-180°；甚至是所形成的圆心角大于180°的情况。
为了方便该轴承被器具夹持进行加工，所述外圈的外周面还包括有位于边缘处的与所述外圈的端面垂直相交的圆环面。
进一步为了达到更好的光滑效果，所述圆环面与相邻的圆锥面之间平滑对接。
本发明的圆环面较为理想的宽度为0mm-0.5mm，即满足被器具夹持并能保持牢固的宽度。所述圆环面的最佳宽度为0.2mm。
本发明还提供一种悠悠球，其特点是包括上述的滚动轴承。
本发明由于采用在悠悠球轴承的外圈的轴向中央部设有凹曲面，又在该凹曲面两侧的每一侧分别设置有至少两段圆锥面，故相比现有的外周面为凹弧形面或“V”形面的设计，这些圆锥面形成一个缓冲的坡度，能让绳线在轴承上分段停留，从而减少绳线间的相互摩擦，使得悠悠球的招式顺 畅完成；该凹曲面同一侧的这些圆锥面中靠近凹曲面的圆锥面的锥角均大于远离凹曲面的圆锥面的锥角，故能保留着让绳线在轴承上分段停留的功能，同时又能使绳线集中在凹曲面和该凹曲面相邻的两段圆锥面之间形成的凹位内，避免绳线与悠悠球的球体摩擦，增加悠悠球的旋转时间；应用该轴承的悠悠球做横技招式时，悠悠球呈水平转动，此时绳线能长时间挂在轴承外围坡度小的圆锥面上，使横技招式完成度更高，做起来更加顺滑；又由于在轴承的边缘处设有与外圈的端面垂直相交的圆环面，该圆环面可更好的解决装夹加工的问题。本发明的轴承设计更加巧妙、合理，更有效的解决了现有轴承仍存在的技术难题，使悠悠球的性能得到进一步的提高。
下面结合附图和实施例对本发明作进一步说明。
附图说明
图1是本发明的立体结构示意图。
图2是本发明实施例一的剖视结构示意图。
图3是本发明实施例二的剖视结构示意图。
图4是图2中X部分的放大示意图。
图5是图3中Y部分的放大示意图。
图6是本发明多段绳线搭接在轴承上的立体结构示意图。
图7是图6的正面结构示意图。
具体实施方式
如图1至图7所示，该实施例所述的一种滚动轴承，包括外圈1、内圈2和位于外圈1和内圈2之间的滚珠3，其中该外圈1外周面的轴向中央部设为凹曲面4，该凹曲面4两侧的每一侧分别设置有至少两段圆锥面5，且位于凹曲面4两个对接端的圆锥面5分别与该凹曲面4平滑对接，相邻的两段圆锥面5之间平滑过渡，使外圈1的外周面形成光滑连续的凹折表面，故相比现有的外周面为凹弧形面或“V”形面的设计，这些圆锥面形成一个缓冲的坡度，能让绳线在轴承上分段停留，从而减少绳线间的相互摩擦，使得悠悠球的招式顺畅完成。
实施例一：
如图2所示，该实施例的轴承的外圈1的外径为15.4mm，内圈2的内径为10mm，厚度为4mm，该轴承外周面包括有轴向中央部的凹曲面4和四段圆锥面5，每个凹曲面4两侧的每一侧各有两段圆锥面5，该凹曲面4位于轴承外圈1外周面的轴向中央部，该凹曲面4半径为0.2mm,该凹曲面4 的最低端距离外周面的深度为0.5mm-1mm，且该凹曲面4的两端与其圆心连线所形成的圆心角η为锐角，如图4所示，该圆心角η约为74°；该实施例与凹曲面4相邻的两段圆锥面5定义为C锥面和D锥面，该C锥面和D锥面分别与凹曲面4的两端相切连接，而位于C锥面之外的圆锥面5定义为A锥面，该A锥面与C锥面之间通过倒角连接；位于D锥面之外的圆锥面5定义为B锥面，该B锥面与D锥面之间同样通过倒角连接；其中C锥面和D锥面的长度比A锥面和B锥面的长度长，这里的长度是指该段圆锥面沿其母线方向的长度，该实施例的C锥面和D锥面的长度为1mm-1.5mm；而A锥面和B锥面的长度大约为0.5mm-1mm。此时C锥面和D锥面的锥角大小相同，均为α；而A锥面和B锥面的锥角大小相同，均为β。该实施例的α角度大于β角度。另外，在轴承的外周面边缘处设有与外圈1的端面相垂直的圆环面6，该圆环面6与A锥面或B锥面连接，该圆环面6是为了便于夹持，故能提高加工精度，进而提高使用该轴承的悠悠球的性能。如图2这样的设计是为了玩家在玩悠悠球的花式玩法时，多段绳线8搭接在轴承外周面上，可有效避免绳线8触碰到两个球体的侧壁面，让搭接在轴承上的绳线8更加集中在轴承的凹曲面4和C锥面、D锥面形成的凹位，而A锥面和B锥面的圆锥面5则形成一个缓冲的坡度，能让绳线8在轴承上分段停留，从而减少绳线8间的相互摩擦，使得悠悠球的招式顺畅完成。
实施例二：
如图3所示，该实施例的轴承大小与实施例一相同，其区别在于该实施例的凹曲面4的变化，该实施例的凹曲面4呈明显的凹陷感觉，该实施例的凹曲面4也为圆弧面，此时的凹曲面4的最低端距离外周面的深度更深，且该凹曲面4的两端与其圆心连线所形成的圆心角η成为钝角，如图5所示，该圆心角η约为175°；该实施例也共有4个圆锥面5，同样是在凹曲面4同一侧的两个圆锥面5中靠近凹曲面4的圆锥面5的锥角大于远离凹曲面4的圆锥面5的锥角，即α角度大于β角度。这样设计的凹曲面4，可以将搭在轴承外周面上的绳线8更好的集中在轴承的中心位置；该实施例中靠近凹曲面4的圆锥面的长度比远离凹曲面4的圆锥面5的长度要短很多，该原远离凹曲面4的圆锥面5的长度比实施例一的远离凹曲面4的圆锥面5的长度要长得多，故可有效提高缓冲的时长，使绳线能缓慢地向中间位置聚拢；同时能使绳线8集中在凹深的凹曲面4内，更有效减少绳线8与球体摩擦，增加悠悠球的旋转时间。
以下将根据但不限于以上两个实施例的轴承组装到悠悠球玩具的其他组件上后进行描述。该实施例的悠悠球包括有上述的一个轴承、两个盘体7、连接轴以及绳线8，该连接轴的两端连接有这两个相背的盘体7，该轴承则位于两盘体7之间且该轴承的内圈2穿过该连接轴，接着利用绳线8套接到轴承的外圈1的外周面上，即完成悠悠球的组装，此时该绳线8自动位于轴承的外周面中央位置，即凹曲面4的位置；将悠悠球高速旋转后，即可开始做各种花式动作，如图6所示的是将绳线8在轴承上搭接了四次，此时的轴承外周面上共有五段，分别搭接在凹曲面4和圆锥面5上，但基本都集中在凹曲面4和靠近凹曲面4的圆锥面5上，如图7所示；该悠悠球在做横技招式(即悠悠球横着呈水平转动时做的招式)时，该轴承靠外侧的圆锥面5具有缓冲的效果，做横技时因悠悠球呈水平转动，绳线8可以长时间挂在轴承外围坡度小的圆锥面5上，故使横技招式完成度更高、做起来更加顺滑。
尽管本发明是参照具体实施例来描述，但这种描述并不意味着对本发明构成限制。参照本发明的描述，所公开的实施例的其他变化，对于本领域技术人员都是可以预料的，这种的变化应属于所属权利要求所限定的范围内。

Claims (18)

  1. 一种滚动轴承，包括外圈(1)、内圈(2)以及位于外圈(1)和内圈(2)之间的滚珠(3)，其特征在于：所述外圈(1)外周面的轴向中央部设为凹曲面(4)，该凹曲面(4)两侧的每一侧分别设置有至少两段圆锥面(5)，且位于所述凹曲面(4)两个对接端的圆锥面(5)分别与该凹曲面(4)平滑对接，相邻的两段圆锥面(5)之间平滑过渡，使所述外圈(1)的外周面形成光滑连续的凹折表面。
  2. 根据权利要求1所述的滚动轴承，其特征在于：在所述凹曲面(4)同一侧的各段圆锥面(5)中，靠近所述凹曲面(4)的圆锥面(5)的锥角均大于远离所述凹曲面(4)的圆锥面(5)的锥角。
  3. 根据权利要求1所述的滚动轴承，其特征在于：所述凹折表面关于其轴向中央位置对称。
  4. 根据权利要求1所述的滚动轴承，其特征在于：所述凹曲面(4)与该凹曲面(4)相邻的两段圆锥面(5)之间形成供多股悠悠球的绳线(8)搭接的凹位。
  5. 根据权利要求1所述的滚动轴承，其特征在于：在所述凹曲面(4)同一侧的各段圆锥面(5)中，靠近所述凹曲面(4)的圆锥面(5)的长度大于远离所述凹曲面(4)的圆锥面(5)的长度。
  6. 根据权利要求1所述的滚动轴承，其特征在于：在所述凹曲面(4)同一侧的各段圆锥面(5)中，靠近所述凹曲面(4)的圆锥面(5)的长度小于远离所述凹曲面(4)的圆锥面(5)的长度。
  7. 根据权利要求1所述的滚动轴承，其特征在于：所述圆锥面的长度为0.5mm-1.5mm。
  8. 根据权利要求1所述的滚动轴承，其特征在于：所述凹曲面(4)为整体向轴承的径向凹陷的圆弧面。
  9. 根据权利要求8所述的滚动轴承，其特征在于：所述凹曲面(4)为半径0.1mm-4mm的圆弧面。
  10. 根据权利要求8所述的滚动轴承，其特征在于：所述凹曲面(4)为半径0.2mm的圆弧面。
  11. 根据权利要求8所述的滚动轴承，其特征在于：所述凹曲面(4)的两端与其圆心连线所形成的圆心角小于90°。
  12. 根据权利要求8所述的滚动轴承，其特征在于：所述凹曲面(4)的两端与其圆心连线所形成的圆心角为90°-180°。
  13. 根据权利要求1所述的滚动轴承，其特征在于：所述凹曲面(4)为整体向轴承的径向凹陷的抛物面。
  14. 根据权利要求1所述的滚动轴承，其特征在于：所述外圈(1)的外周面还包括有位于边缘处的与所述外圈(1)的端面垂直相交的圆环面(6)。
  15. 根据权利要求14所述的滚动轴承，其特征在于：所述圆环面(6)与相邻的圆锥面(5)之间平滑对接。
  16. 根据权利要求14所述的滚动轴承，其特征在于：所述圆环面(6)的宽度为0mm-0.5mm。
  17. 根据权利要求14所述的滚动轴承，其特征在于：所述圆环面(6)的宽度为0.2mm。
  18. 一种悠悠球，其特征在于：包括如权利要求1至17任一项所述的滚动轴承。
PCT/CN2016/073161 2015-10-30 2016-02-02 一种滚动轴承 WO2017071138A1 (zh)

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