Universal bearing size adjusting and positioning device for hub mandrel of bicycle rim

Abstract

A universal bearing size adjusting and positioning device for a hub mandrel of a bicycle rim comprises a hub, a mandrel is arranged in the hub in a shaft mode, threaded portions are arranged at the two ends of the mandrel, and two bearings are further screwed at the two ends of the mandrel. The bearings are sequentially provided with an outer ring, an inner ring and a wrenching part, a screw hole is formed in the inner ring of each bearing in a screwed mode, after the bearings are screwed to the threaded part of the mandrel through the screw holes, the bearings can rotate along threads through the wrenching parts, the shaft diameter of the threaded part is adjusted to be located, and then the fixed-axis rotation function is provided. And the bearing can be locked in a reverse direction to prevent the bearing from loosening.

Description

Technical Field

[0001] The utility model relates to the field of bicycle rotating hub accessories, in particular to a universal bearing size adjustment and positioning device for a bicycle rim hub spindle. Background Art

[0002] The existing industrial bearing hub structure can be found in Figure 1 , its disadvantages are:

[0003] 1. To prevent left-right offset of the hub 1 and spindle 2 after assembly, which would affect the operating life and the accuracy of wheel runout control, the precision tolerance range of the spacing 111 between the two opposite bearing seats of the hub 1 in the prior art is extremely small, resulting in high processing costs for the hub 1.

[0004] 2. In addition, the corresponding spindle 2 must also meet the high precision requirements of the bearing seat spacing 111 of the hub 1 to prevent the spindle 2 from offsetting the hub and causing the wheel to yaw and slip during operation after assembly, which also results in relatively high costs.

[0005] 3. The spindle 2 of the existing structure must be precisely ground to match the inner ring diameter of the bearing.

[0006] 4. In addition to the high precision cost mentioned above, the existing technical structure is also limited to the specific distance 111 between the axle and the hub 1 bearing seat of different manufacturers. The axle 2 and the hub 1 must correspond to the brand and model of their respective manufacturers. They cannot be interchangeable with multiple brands, which increases the trouble of future maintenance and replacement.

[0007] like Figure 1 The convex outer diameter E has a higher material cost.

[0008] like Figure 2 As shown, another hub structure has the following disadvantages:

[0009] 1. The 6-axis ball bearing has the adaptability to various hubs and allows for adjustment of the bearing seat on each side. However, since the 6-axis ball bearing is stamped by a punch press, its operating efficiency and smoothness are far inferior to those of industrial-grade ball bearing structures.

[0010] 2. In addition, the corresponding jade stamping of the ball nest ball bearing 6 is also a hot forging die stamping part, and its operating efficiency and smoothness are far inferior to those of industrial ball bearings.

[0011] 3. The structure of the Pearl Nest Ball Bearing 6 is a stacked lock structure consisting of three components: the bead bowl, the bead nest, and the jade seal. Therefore, its dustproof, waterproof, weather-resistant and service life are far inferior to those of the Figure 1 Industrial ball bearings are used as the transmission structure.

[0012] How to solve the above problems is an issue that relevant industries are actively working on. Utility Model Content

[0013] The utility model provides a universal bearing size adjustment and positioning device for a bicycle rim hub spindle, the main purpose of which is to improve the shortcomings of the existing hub. The technology and means are as follows:

[0014] The invention has a hub, an inner shaft of the hub is provided with a spindle, both ends of the spindle are provided with threaded parts, and two bearings are screwed on both ends of the spindle. The two bearings respectively have an outer ring, an inner ring and a pull part provided on the inner ring. The inner rings of the two bearings are provided with a screw hole. After being screwed into the threaded part of the spindle through the screw hole, the bearing can be adjusted to the required position along the axial diameter of the threaded part by rotating the pull part according to the thread to provide a fixed-axis rotation function. The rear ends of the two bearings along the installation direction are also provided with positioning nuts, which can be locked to prevent the bearings from loosening.

[0015] In an embodiment of the present invention, a bead bearing cover is provided between the hub and the aforementioned bearing, and a positioning groove is provided on the inner side of the bead bearing cover.

[0016] Through the above description, the effects that can be obtained by the present invention are as follows:

[0017] 1. Compared with the existing technology, the precision tolerance range of the distance between the two pairs of bearing seats of the hub can be enlarged, so the processing cost of the hub shell is lower.

[0018] 2. The corresponding hub axle of the utility model can adjust the pitch of the bearing inner ring thread to freely correspond to the bearing seat distance of the hub, so the processing accuracy tolerance of the two corresponding bearing seat distances is relatively large, saving processing costs. In addition, the processing accuracy of the bearing seat distance of the matching spindle relative to the hub is also relatively large, and there is no need to process the convex bearing step on the back end face of the bearing, which relatively saves shaft diameter material and processing costs.

[0019] 3. The spindle of the present invention does not need to be ground on the diameter of the inner sleeve of the bearing. Instead, the inner ring thread of the industrial bearing of the present invention is assembled with the thread on the shaft, which is locked. There is no need to grind the bearing diameter at the center of the shaft, so the cost is relatively lower than the existing technology.

[0020] 4. In addition to the lower cost of precision machining of the aforementioned bearing parts, the axle and hub shell are no longer limited to manufacturer-specific models. The axle is compatible with hub shells of different models from multiple manufacturers, allowing for universal repair and replacement, reducing the cost and convenience of repairs and updates.

[0021] 5. This patent also has the adaptability of the existing technology of bead nest ball bearing with a variety of hub shells and two corresponding side bearing seats that are compatible and adjustable, but its structure itself is a single molded kit of parts that is relatively easy to assemble.

[0022] 6. The bearing structure of this patented structure is a precision industrial-grade ball bearing structure, so its operating efficiency, smoothness and service life are far superior to the existing ball nest ball bearing.

[0023] 7. The industrial ball bearing of this patent is an integrated single-piece structure, so its dustproof and waterproof weather resistance and service life are far superior to the bead nest ball bearing itself, which is a three-component stacked and locked structure of bead bowl + bead nest + jade seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 : Structural diagram of the prior art industrial bearing hub (1);

[0025] Figure 2 : Structural diagram of the prior art bead bowl bearing hub (II);

[0026] Figure 3 : is a structural cross-sectional view of the utility model corresponding to the first embodiment;

[0027] Figure 4 :yes Figure 3 Structural breakdown diagram;

[0028] Figure 5 : is a structural cross-sectional view corresponding to the second embodiment of the present utility model;

[0029] Figure 6 :yes Figure 5 Structural breakdown diagram;

[0030] Figure 7 : It is a structural stereogram of the present utility model.

[0031] Description of Reference Numerals

[0032] 1. Flower drum;

[0033] 11. Palin Seat;

[0034] 111, Palin Seat;

[0035] 2. Mandrel;

[0036] 21. Threaded portion;

[0037] 3. Peilin;

[0038] 31. Outer Ring;

[0039] 32. Inner ring;

[0040] 33. Pulling part;

[0041] 34. Screw hole;

[0042] 4. Positioning nut;

[0043] 5. Pearl bowl Peiling cover;

[0044] 51. Groove;

[0045] 6. Pearl Nest Ball Bearing;

[0046] D. Diameter of inner sleeve of bearing;

[0047] E. Outer diameter of convex circle. DETAILED DESCRIPTION

[0048] like Figures 3 and 4 As shown, the utility model discloses a universal bearing size adjustment and positioning device for a bicycle wheel hub spindle, comprising: a hub 1, a spindle 2 provided on the inner shaft of the hub 1, threaded portions 21 provided at both ends of the spindle 2, two bearings 3 screwed together at both ends of the spindle 2, the two bearings 3 sequentially comprising an outer ring 31, an inner ring 32 and a pull portion 33 provided on the inner ring 32, the inner rings 32 of the two bearings 3 each comprising a screw hole 34, after being screwed into the threaded portion 21 of the spindle 2 through the screw hole 34, the bearing 3 can be adjusted to a desired position along the axial diameter of the threaded portion 21 by rotating the pull portion 33 according to the thread, thereby providing a fixed-axis rotation function, and a positioning nut 4 is provided at the rear end of these bearings 3 along the installation direction, which can lock the bearing 3 to prevent the bearing 3 from loosening.

[0049] Therefore, the first embodiment can be understood that the advantages that can be obtained by the first embodiment are:

[0050] 1. Compared with the prior art, the precision tolerance range of the bearing seats 11 on the two pairs of sides of the hub 1 can be enlarged, so the processing cost of the hub 1 is lower.

[0051] 2. The corresponding spindle 2 of the present invention can adjust the pitch of the threaded portion 21 of the screw hole 34 of the bearing 3, and freely correspond to the bearing seat 11 of the hub 1. Therefore, the processing accuracy tolerance of the distance 111 between the two corresponding bearing seats 11 is larger, saving processing costs. In addition, it is unnecessary to process the convex outer diameter of the back end surface of the bearing 3, which relatively saves shaft diameter material and processing costs.

[0052] 3. The spindle 2 of the present invention does not need to be ground on the diameter of the inner sleeve of the bearing 3. Instead, the threaded portion 21 on the spindle 2 is locked with the inner ring thread of the bearing 3, eliminating the need to grind the spindle 2 on the diameter of the bearing 3. Therefore, the cost is relatively lower than that of the spindle of the prior art.

[0053] like Figures 5 to 7 As shown, the second embodiment of the present invention has the same basic structure as the first embodiment, with the only difference being that a bead bearing cover 5 is provided between the hub 1 and the aforementioned bearing 3, and a groove 51 for positioning an industrial bearing is provided on the inner side of the bead bearing cover 5.

[0054] Therefore, the second embodiment can be understood to have the following advantages:

[0055] 1. This patented bearing 3 structure not only reduces the machining cost of the aforementioned matching parts with high precision, but also allows the spindle 2 and hub 1 to be compatible with hubs 1 of different models from multiple manufacturers, allowing for universal repair and replacement, reducing the cost and convenience of repairs and updates.

[0056] 2. The second embodiment of the present invention also has the adaptability of the existing ball-nest ball bearing to be compatible with two corresponding side bearings of various hubs 1, but its structure is a single molded kit of parts, which is relatively easy to assemble.

[0057] 3. In the second embodiment of the present invention, the bearing 3 is a precision industrial-grade ball bearing structure, so its operating efficiency, smoothness and service life are far superior to the existing ball-nest ball bearing.

[0058] It should be noted that the above description is a specific embodiment of the present invention and the technical principles used. If changes are made based on the concept of the present invention and the resulting functions still do not exceed the spirit covered by the specification and drawings, they should be stated within the scope of the present invention.

Claims

1. A universal bearing size adjustment and positioning device for a bicycle rim hub spindle, comprising: A hub, wherein the hub shaft is provided with a spindle, the two ends of the spindle are provided with threaded portions, and two bearings are screwed on the two ends of the spindle, characterized in that: The two bearings each have an outer ring, an inner ring and a pull portion provided on the inner ring. The inner ring of each bearing is provided with a screw hole, which is screwed into the threaded portion of the corresponding spindle. The two bearings are also provided with positioning nuts at the rear ends along the installation direction.

2. The universal bearing size adjustment and positioning device for a bicycle rim hub spindle according to claim 1, wherein: A bead bowl bearing cover is provided between the hub and the bearing, and a groove for positioning is provided on the inner side of the bead bowl bearing cover.

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