WO2017031777A1

WO2017031777A1 - Yo-yo bearing

Info

Publication number: WO2017031777A1
Application number: PCT/CN2015/088867
Authority: WO
Inventors: 蔡东青
Original assignee: 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
Priority date: 2015-08-25
Filing date: 2015-09-02
Publication date: 2017-03-02
Also published as: CN105179467A

Abstract

A yo-yo bearing comprises an outer ring (1), an inner ring (2), and a ball (3) located between the outer ring (1) and the inner ring (2). A peripheral surface of the outer ring (1) is a smooth continuous concave-convex surface, the peripheral surface comprises a concave surface (4) located at an axial center of the peripheral surface of the outer ring (1) and a convex surface (5) located on two sides of the concave surface (4), and the concave surface (4) and the convex surface (5) are smoothly connected.

Description

a yo-yo bearing

Technical field

The invention relates to a toy yo-yo, in particular to a yo-yo bearing.

Background technique

Many of the yo-yo bearings are now made with a concave curved surface, as in US Pat. No. 7,175,500, which discloses that the bearing is a concave curved surface. This design is for the player to play the yo-yo fancy game. When the rope is 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 in the center of the bearing, so that the yo-yo has a longer idle time and can play. More fancy. However, since the concave depth of the concave curved surface cannot be designed too deep, when the multi-segment rope is used, some rope segments are easily pushed to the side, so that the rope and the bearing cannot be better concentrated in the central part of the bearing, so that the rope The oscillating or supporting point deviates from the center of gravity and the like, causing the yo-yo to lose balance on both sides, and the rope deviating from the central portion is easily rubbed against the inner side of the yo-yo disk connected to both sides of the bearing, thereby affecting the rotation performance of the yo-yo.

Another example is a bearing unit disclosed in Chinese Patent No. CN201210089146.9 and the use of the yo-yo, and the ball bearing and the use of the yo-yo. The invention patent discloses that the outer peripheral surface of the outer ring of the ball bearing has a concave curved surface on the concave curved surface. The axial sides are respectively provided with a flat surface perpendicular to the end surface of the outer ring. The patent is provided with a flat surface in order to make the angle between the axially opposite sides of the outer peripheral surface and the end surface of the outer ring substantially obtuse. Therefore, when disassembling or assembling, it is possible to prevent the hook caused by the nonwoven fabric or the like, and it is possible to suppress the impression of sharp feeling and excessive concern about safety.

Summary of the invention

In view of the problems of the prior art described above, it is an object of the present invention to provide a yo-yo bearing that enables the rope to be more efficiently concentrated in the center of the bearing to improve the performance of the yo-yo.

In order to achieve the above object, the technical solution adopted by the present invention is: a yo-yo bearing comprising an outer ring, an inner ring and a ball between the outer ring and the inner ring, wherein the outer peripheral surface of the outer ring is a smooth continuous concave and convex surface, the outer peripheral surface comprising a concave curved surface located at an axial central portion of the outer circumferential surface of the outer ring and a convex curved surface on both sides of the concave curved surface, forming a bilateral symmetry, and smoothing between the concave curved surface and the convex curved surface Docking.

The convex curved surface of the present invention may be a circular arc surface that protrudes outward from the bearing as a whole, or may be a paraboloid that protrudes outward from the bearing as a whole. The use of a curved surface can effectively reduce the friction and touch between the rope and the bearing, thereby avoiding the influence of the mutual perpendicularity of the rope and the yo-yo.

When the convex curved surface of the present invention is an arc surface, the arc surface preferably has a radius of 0.2 mm to 3.8 mm.

Further, the best effect is that the convex curved surface is a circular arc surface having a radius of 2.5 mm.

When the convex curved surface is a circular arc surface, the ideal design is that the central angle formed by the two ends of the convex curved surface and the center line thereof is less than 90°; of course, the two ends of the convex curved surface are not discharged The central angle formed by the connection is 90°-180°; even the case where the central angle formed is greater than 180°.

Correspondingly, the concave curved surface may also be a circular arc surface that is integrally recessed toward the radial direction of the bearing, or may be a paraboloid that is entirely recessed toward the radial direction of the bearing. Therefore, even when the fancy action is performed, the multi-segment rope is wound around the bearing and can be kept concentrated at the center of the bearing, thereby maintaining the overall balance of the yo-yo.

When the concave curved surface of the present invention is a circular arc surface, the arcuate surface preferably has a radius value of 0.5 mm to 4 mm.

Further, the best effect is that the concave curved surface is a circular arc surface having a radius of 0.5 mm.

When the concave curved surface is a circular arc surface, 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 discharged The central angle formed by the connection is 90°-180°; even the case where the central angle formed is greater than 180°.

In order to facilitate machining of the bearing by the tool holder, the concave and convex surface further includes a plane at the edge that intersects the end surface of the outer ring. The planar design of the invention differs from the flat surface design at the edge of the bearing of the prior art, which is mainly designed to take into account that when the end of the convex curved surface directly extends to the end edge of the outer ring, the bearing is disadvantageous for processing. The clamping is designed such that the plane is designed to machine the bearing clamping.

Further, the angle formed by the plane intersecting the end surface of the outer ring is not more than 90°, that is, a right angle or an acute angle, which facilitates the clamping of the device and ensures the clamping is firm. However, the angle between the flat surface and the end surface at the edge of the bearing of the prior art is required to be an obtuse angle.

Further, in order to achieve a better smoothing effect, the plane and the convex curved surface are smoothly butted.

The preferred width of the plane of the present invention is from 0 mm to 0.2 mm, i.e., it satisfies the width that can be maintained by the appliance and can be maintained. The optimum width of the plane is 0.2 mm.

The invention adopts a smooth continuous concave and convex surface which is designed to include a concave curved surface having an axial central portion and a convex curved surface on both sides of the concave curved surface, so that the outer peripheral surface is concave compared with the existing outer peripheral surface. The design of the curved surface, the convex curved surface on both sides of the concave curved surface can better prevent the rope from deviating from the central portion of the bearing, so that the bearing can be concentrated in the concave curved surface of the central portion of the bearing even if the winding is multi-segmented, so that the rope pulls the yo-yo The fulcrum is located at the center of gravity of the bearing, and even if it is at the center position, it ensures the balance between the two sides of the yo-yo, improves the rotation precision and rotation performance of the yo-yo; and the convex surface of the round or paraboloid can effectively reduce the contact and friction between the rope and the convex surface. It can also assist the rope to more accurately reach the central position of the bearing during the fancy action, and avoid the contact between the rope and the yo-yo disk on both sides of the bearing when the rope is retracted, which greatly improves the operation performance of the yo-yo; Moreover, since a plane intersecting the end surface of the outer ring is provided at the edge of the bearing, it is possible to avoid the bearing being difficult to be clamped for processing due to the design of the convex curved surface. The operation, especially in the state where the central angle of the convex curved surface is greater than 90°, the plane can better solve the problem of the clamping process. 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.

The invention will now be further described with reference to the accompanying drawings and embodiments.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic perspective view of the present invention.

Figure 2 is a schematic cross-sectional view of the present invention.

Figure 3 is an enlarged schematic view of a portion A of Figure 2.

Figure 4 is an enlarged schematic view of a portion B of Figure 2.

Figure 5 is a cross-sectional structural view showing another embodiment of the present invention.

Figure 6 is an enlarged schematic view of a portion C of Figure 5.

Figure 7 is a perspective view showing the structure of the rope of the present invention lapped on a bearing.

Figure 8 is a schematic view of the front structure of Figure 7.

Figure 9 is a perspective view showing the three-dimensional structure of the rope of the present invention overlapped on the bearing.

Figure 10 is a schematic view of the front structure of Figure 9.

detailed description

As shown in FIG. 1 to FIG. 10, a yo-yo bearing according to this embodiment includes an outer ring 1, an inner ring 2, and a ball 3 between the outer ring 1 and the inner ring 2, wherein the outer ring 1 The outer peripheral surface is a smooth continuous concave and convex surface, and the outer peripheral surface includes a concave curved surface 4 located at an axial central portion of the outer peripheral surface of the outer ring 1 and a convex curved surface 5 located on both sides of the concave curved surface 4 to form a left-right symmetry, the concave curved surface 4 Smoothly butt joint with the convex curved surface 5, so the concave curved surface 4 is two compared with the existing outer peripheral surface which is a concave curved surface. The convex curved surface 5 can better prevent the rope from deviating from the central part of the bearing, so that even if the bearing is wound in multiple stages, it can be concentrated in the concave curved surface 4 of the central part of the bearing, so that the fulcrum of the rope pulling the yo-yo is located at the center of gravity of the bearing, Even the center position guarantees the balance between the two sides of the yo-yo and improves the rotation accuracy and rotation performance of the yo-yo.

Embodiment 1:

As shown in FIG. 2, 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, and a thickness of 4 mm. The concave curved surface of the bearing has a radius of 0.5 mm and is located on the outer ring of the bearing. The axial center portion of the outer peripheral surface, the lower end of the concave curved surface 4 has a depth of 0.6 mm from the outer peripheral surface, and the central angle β formed by the line connecting the two ends of the concave curved surface 4 to the center of the circle is an acute angle, as shown in FIG. The central angle β is about 74°; and the two convex curved surfaces 5 are corresponding to circular arc surfaces, respectively located at two ends of the concave curved surface 4, and the end points of the convex curved surface 5 are smoothly connected with the end points of the concave curved surface 4, that is, the convex curved surface 5 The arc is tangentially connected to the arc of the concave curved surface 4, the radius of the convex curved surface 5 is 2.5 mm, and the central angle α formed by the connection of the two ends of the convex curved surface 5 with the center of the circle is an acute angle, as shown in FIG. The central angle α is about 37°; in addition, a plane 6 perpendicular to the end surface of the outer ring 1 is provided at the outer peripheral edge of the bearing, as shown in FIG. 3 or FIG. 4, that is, θ ₁ in the figure is 90°. the length L ₁ of plane 6 is 0.2mm, the convex curved surface of the other end 5 is connected to the terminal 6 of the plane, and to avoid a sense of ribs are formed, the convex curved surface 5 and the plane 6 The connection is a tangential smooth butt joint, so that the entire outer peripheral surface of the outer ring 1 is a smooth continuous concave and convex surface, and the convex curved surface 5 is designed to allow the bearing to be processed by the tool, rather than to prevent the non-woven The hook caused by the cloth or the like can suppress the impression of the sharp feeling and the excessive worry about the safety, because the outer ring 1 is provided with the convex curved surface 5, so the outer peripheral surface itself has no design of the plane 6, the axis of the outer peripheral surface The angle formed by the convex curved surfaces 5 of the both sides and the outer ring 1 is an obtuse angle, and there is no sharpness. Therefore, this embodiment sets the plane 6 for the purpose of clamping, even as shown by the broken line in Fig. 4, the dotted line portion of the figure is another structural form, and the plane 6 and the end surface of the outer ring 1 in this state The angle is θ ₂ , and θ _{2 is} less than 90° at this time, forming an acute angle. This design further ensures that the device is firmly clamped to the bearing, and although it has a certain sharp feeling, it can improve the processing precision. Improve the performance of the yo-yo using this bearing. The design as shown in Figure 2 is for the player to play the yo-yo fancy game, a few pieces of rope are placed on the outer peripheral surface of the bearing, try to avoid the rope touching the side wall surface of the two spheres, so that the rope on the bearing is more Focusing on the center of the bearing makes the yo-yo idling longer and can play more fancy.

Embodiment 2:

As shown in FIG. 5, the bearing size of this embodiment is the same as that of the first embodiment, and the difference is that the actual The convex curved surface 5 of this embodiment is more convex and conspicuous, and the convex curved surface 5 of this embodiment is more convex and convex, and the convex curved surface 5 of this embodiment is also the same. The circular arc surface, the central angle α formed by the two ends of the convex curved surface 5 in this state and its center line is an acute angle, as shown in FIG. 6, the central angle α is about 130°; and the convex convex surface 5 is obviously convex. From the design, the concave curved surface 4 correspondingly has a distinct concave feeling. The concave curved surface 4 of this embodiment is also a circular arc surface. At this time, the lowest end of the concave curved surface 4 is deeper than the outer peripheral surface, and both ends of the concave curved surface 4 The central angle β formed by the line connecting with the center of the circle is also an obtuse angle, and as shown in Fig. 6, the central angle β is about 175°. As shown in Figure 6, the ropes on the outer peripheral surface of the bearing can be better concentrated in the center of the bearing, which makes the yo-yo idling longer, can play more fancy, unique, and styling. novel.

The following description will be made on the basis of, but not limited to, the assembly of the above two embodiments assembled to other components of the Yo-Yo toy. As shown in FIG. 7, the bearing is fixed to the intermediate position of the two opposite yo-yo disk bodies 7 through the inner ring through the connecting shaft, and then is sleeved to the outer peripheral surface of the outer ring 1 of the bearing by the rope, that is, Complete the assembly of the yo-yo. As shown in Fig. 8, at this time, the rope is automatically located at the center of the outer peripheral surface of the bearing, that is, the position of the concave curved surface 4, so that the yo-yo at the end of the rope can be balanced while playing, and the rotation performance of the yo-yo is improved; As shown, when the yo-yo is rotating at a high speed, various fancy actions can be started. The figure shows that the rope is wound one turn and then placed on the outer ring 1 of the bearing. At this time, the outer peripheral surface of the bearing There are two pieces of rope on it. When the second piece of rope 82 is taken down, the first piece of rope 81 is pushed out and moved to the side. Later, the second piece of rope 82 is often placed in the middle. The position, as shown in FIG. 10, at this time, the convex curved surface 5 can better limit the range of movement of the first length of the rope 81, ensuring that the first length of the rope 81 does not deviate too far from the central position, and at the same time, due to the second section of the rope 82 It is in the state of bearing yo-yo, so it can maintain the balance of the yo-yo; and the convex curved surface 5 can also play a guiding role in the process of the rope tying up during the fancy action, and accurately guide the rope to the concave curved surface 4 Position while reducing the rope touched The inner side of the disc body 7; similarly, during the removal of the rope that the fancy action will take up, the convex curved surface 5 can also reduce the friction of the rope during the removal process or contact with the yo-yo disk body 7. Inner side. Therefore, the design of the convex curved surface 5 can effectively improve the operational performance of the yo-yo.

Although the present invention has been described with reference to the specific embodiments, this description is not intended to limit the invention. Other variations to the disclosed embodiments are contemplated by those skilled in the art in light of the description of the invention.

Claims

A yo-yo bearing comprising an outer ring (1), an inner ring (2) and a ball (3) between the outer ring (1) and the inner ring (2), characterized in that: the outer ring (1) The outer peripheral surface is a smooth continuous concave-convex surface including a concave curved surface (4) located at an axial center portion of the outer peripheral surface of the outer ring (1) and a convex curved surface on both sides of the concave curved surface (4) 5), the concave curved surface (4) and the convex curved surface (5) are smoothly butted.
The yo-yo bearing according to claim 1, wherein the convex curved surface (5) is an arcuate surface that protrudes outward from the bearing as a whole.
The yo-yo bearing according to claim 2, wherein the convex curved surface (5) is a circular arc surface having a radius of 0.2 mm to 3.8 mm.
The yo-yo bearing according to claim 2, wherein the convex curved surface (5) is a circular arc surface having a radius of 2.5 mm.
The yo-yo bearing according to claim 2, characterized in that the central angle formed by the two ends of the convex curved surface (5) and its center line is less than 90°.
The yo-yo bearing according to claim 2, characterized in that the central angle formed by the two ends of the convex curved surface (5) and its center line is 90°-180°.
The yo-yo bearing according to claim 1, wherein the convex curved surface (5) is a paraboloid that protrudes integrally toward the outside of the bearing.
The yo-yo bearing according to claim 1, wherein the concave curved surface (4) is a circular arc surface that is entirely recessed toward the radial direction of the bearing.
The yo-yo bearing according to claim 8, wherein the concave curved surface (4) is a circular arc surface having a radius of 0.5 mm to 4 mm.
The yo-yo bearing according to claim 8, wherein the concave curved surface (4) is a circular arc surface having a radius of 0.5 mm.
The yo-yo bearing according to claim 8, characterized in that the central angle formed by the two ends of the concave curved surface (4) and its center line is less than 90°.
The yo-yo bearing according to claim 8, characterized in that the central angle formed by the two ends of the concave curved surface (4) and its center line is 90°-180°.
The yo-yo bearing according to claim 1, wherein the concave curved surface (4) is a paraboloid that is entirely recessed toward the radial direction of the bearing.
The yo-yo bearing according to claim 1, wherein said outer ring (1) The outer peripheral surface further includes a plane (6) at the edge that intersects the end surface of the outer ring (1).
The yo-yo bearing according to claim 14, wherein the plane (6) intersects with the end surface of the outer ring (1) to form an angle of not more than 90°.
The yo-yo bearing according to claim 14, characterized in that the plane (6) and the convex curved surface (5) are smoothly butted.
The yo-yo bearing according to claim 14, characterized in that the plane (6) has a width of 0 mm to 0.2 mm.
The yo-yo bearing according to claim 14, characterized in that the plane (6) has a width of 0.2 mm.