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

Abstract

A universal size adjusting and positioning structure for a bicycle rim, a hub, a mandrel and a bearing is characterized in that threaded parts are arranged at two ends of a mandrel, positioning nut devices are arranged on the threaded parts, a ball bowl bearing cover and an industrial bearing kit set are assembled, and the industrial bearing kit set is fixed in position through a fixing seat and matched with a pressing piece, so that the bearing cover is fixed. Due to the fact that the length of the mandrel can be adjusted through the positioning nut device, the effects that the mandrel can achieve universal size positioning and is suitable for various types of hubs, and the purchase cost of consumers is reduced can be achieved.

Description

Technical Field

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

[0002] In the prior art, the bead nest type hub spindle structure includes a spindle, and a bead bowl bearing cover, a bead nest bearing, a fixed seat and a pressing member are sequentially arranged at both ends of the spindle.

[0003] When in use, the bead nest bearing fits on the bead bowl bearing cover and rotates around the spindle. However, the structural disadvantages of the prior art are as follows:

[0004] 1. The specifications of the spindles are all special specifications, and the positioning lengths of the spindle bearing seats are different. It is quite inconvenient to find the original factory specifications for maintenance.

[0005] 2. The bead nest bearing rotates around the spindle by fitting on the bead bowl bearing cover. It can be understood that a large amount of lubricating grease (butter) needs to be applied. However, it is quite troublesome to scrape and clean the lubricating grease during maintenance.

[0006] 3. When the bead bowl bearing cover and the bead nest bearing are combined, the bearing positioning needs to be adjusted to avoid being too loose or too tight, which may cause the spindle and the connected hub to be misaligned. However, the above combination method relies on experience. Most people do not have the experience of replacement, so that the bead nest bearing only contacts the bead bowl bearing cover on a single side, resulting in serious wear of the bead nest bearing and a short service life of the bead nest bearing.

[0007] How to solve the above problems is an issue that relevant practitioners are actively trying to solve. Content of the Utility Model

[0008] The utility model provides a universal size adjustment and positioning structure for a hub spindle bearing of a bicycle wheel rim. The main purpose is to provide a plurality of positioning nuts on the spindle. By adjusting the positioning nuts, the length corresponding to different specifications of hubs can be adjusted. In other words, by simply adjusting the positions of the positioning nuts, hubs of various lengths can be used, and industrial bearings can be updated or upgraded to achieve universal sizes. Consumers do not need to specifically search for special spindle specifications or original factory parts, which can reduce costs and extend the service life of the bearings, etc., with multiple advantages.

[0009] The utility model provides a universal size adjustment and positioning structure for a hub spindle bearing of a bicycle wheel rim. The main purpose is to replace the bead nest bearing sleeved on the bead bowl cover with an industrial bearing kit group, reduce the complexity of maintenance, and extend the service life of the ball bearing.

[0010] Therefore, the structure of the utility model includes:

[0011] A mandrel, which is a metal rod, and screw threads are formed at both ends of the mandrel by rolling threads;

[0012] Two sets of positioning nut devices, each of which is composed of two nuts. Each positioning nut device screws the aforementioned nuts onto the threaded part of the mandrel near the inner side of the mandrel;

[0013] Two sets of industrial bearing kit groups, each of which is installed at both ends of the mandrel, and an outer diameter ring side of each industrial bearing kit group is nested into the inner side of the ball bowl bearing cover, so that each industrial bearing kit group rotates axially along the mandrel;

[0014] Two sets of ball bowl bearing covers, each of which has a round cover shape and is adapted to the specifications of the existing hub socket holes in general technology. A perforation is provided in the center of the ball bowl bearing cover, and each ball bowl bearing cover can be respectively arranged on both sides of the mandrel through the perforation;

[0015] Two sets of fixing seats, each of which is used to fix the position of each industrial bearing kit group, and each fixing seat is respectively fixed on the other side of each industrial bearing kit group;

[0016] At the same time, the inner diameter ring of the industrial bearing kit group is positioned by each positioning nut device, so as to adjust the working length of the corresponding hub;

[0017] Two sets of pressing parts, each of which is respectively combined with the outer side of the fixing seat. Through each pressing part, the hub group after the combination of the aforementioned mandrel, ball bowl bearing cover and industrial bearing kit group is locked and fixed on the frame or the front fork. In the embodiment of the present invention, the fixing seat is a hexagonal nut.

[0018] Through the above description, the characteristics and effects of the present invention are briefly described as follows:

[0019] 1. The present invention uses a positioning nut device to adjust the distance between the industrial bearing kit groups of the mandrel, and various widths of hubs can be used, which greatly improves convenience.

[0020] 2. The structure provided by the present invention adopts an industrial bearing kit group, which can reduce the complexity of maintenance and extend the service life of the ball bearing. Brief Description of the Drawings

[0021] Figure 1 : Perspective view of the present invention;

[0022] Figure 2 : Structure diagram of the present invention;

[0023] Figure 3 : Cross-sectional view of the present invention;

[0024] Figure 4: Actual usage state diagram (1) of the present utility model;

[0025] Figure 5 : Actual usage state diagram (2) of the present utility model.

[0026] Explanation of reference numerals in the drawings

[0027] 1. Mandrel;

[0028] 11, 12: Threaded parts;

[0029] 2. Positioning nut device;

[0030] 21, 22: Nuts;

[0031] 3. Ball bowl bearing cover;

[0032] 31. Perforation;

[0033] 4. Industrial bearing kit group;

[0034] 41. Outer diameter ring;

[0035] 42. Inner diameter ring;

[0036] 5. Fixed seat;

[0037] 6. Compression member;

[0038] 7. Hub. Detailed implementation manner

[0039] As Figures 1 to 3 shown, the universal size adjustment and positioning structure of the hub mandrel bearing of the bicycle rim of the present utility model includes: a mandrel 1, two groups of positioning nut devices 2, two groups of ball bowl bearing covers 3, two groups of industrial bearing kit groups 4, two groups of fixed seats 5, and two groups of compression members 6.

[0040] As Figures 1 to 3 shown, the mandrel 1 is a metal rod body, and threaded parts 11, 12 are respectively formed by rolling threads at both ends of the mandrel 1.

[0041] As Figures 1 to 3 shown, each of the positioning nut devices 2 is composed of two nuts 21, 22, and the effect of tight fixation can be achieved by locking in the forward and reverse directions; please continue to refer to Figure 1 、 Figure 2 , each positioning nut device 2 screws the nuts 21, 22 on the threaded parts 11, 12 of the mandrel 1 close to the inner side of the mandrel 1 (that is, the inner side of the mandrel 1 is the middle part of the axial direction of the mandrel 1, and conversely, the outer side of the mandrel 1 is the direction close to the axial ends of the mandrel 1).

[0042] As Figures 1 to 3As shown, each ball bowl bearing cover 3 has the outer shape of a round cover and is adapted to the specifications of the existing hub socket holes. A perforation 31 is provided at the center of the ball bowl bearing cover 3. Through this perforation 31, each ball bowl bearing cover 3 can be respectively arranged on both axial sides of the mandrel 1, and each ball bowl bearing cover 3 is positioned by the aforementioned corresponding positioning nut device 2.

[0043] As Figures 1 to 3 shown, each industrial bearing kit group 4 is respectively installed at both ends of the mandrel 1, and one side of each industrial bearing kit group 4 is nested into the inner side of the ball bowl bearing cover 3, so that each industrial bearing kit group 4 rotates axially along the mandrel 1.

[0044] As Figures 1 to 3 shown, each fixing seat 5 is used to fix the position of each industrial bearing kit group 4, and each fixing seat 5 is respectively fixed on the other side of each industrial bearing kit group 4. Among them, the fixing seat 5 can be selected such as a hexagonal nut.

[0045] As Figures 1 to 3 shown, at the same time, the inner diameter ring 42 of the industrial bearing kit group 4 is positioned by each positioning nut device 2, so as to adjust the working length of the corresponding hub 7.

[0046] As Figures 1 to 5 shown, each tightening member 6 is combined with the outside of the fixing seat 5. Through each tightening member 6, the aforementioned mandrel 1, ball bowl bearing cover 3 and industrial bearing kit group 4 are tightly combined with the previously provided hub 7. Each tightening member 6 is combined with the outside of the fixing seat 5. Through each tightening member 6, the hub 7 group after the combination of the aforementioned mandrel 1, ball bowl bearing cover 3 and industrial bearing kit group 4 is locked and fixed on the frame (not shown in the figure) or the front fork (not shown in the figure).

[0047] As Figures 1 to 3 shown, since the industrial bearing kit group 4 of the present utility model only needs to be assembled in sequence, the assembly can be completed. Compared with the structure of the prior art, it does not need to use too much lubricating grease, can reduce the complexity of maintenance, and extend the service life.

[0048] As Figure 4 shown, using the positioning nut device 2 can adjust the distance of the industrial bearing kit group 4 on the mandrel 1, and various widths of hubs 7 can be used, greatly improving convenience.

[0049] As Figure 5 shown, when the width of the hub 7 is longer, the position of the positioning nut device 2 is screwed outward, and then the ball bowl bearing cover 3, industrial bearing kit group 4, fixing seat 5 and tightening member 6 are sequentially screwed on the threaded parts 11, 12 of the mandrel 1. In this way, one mandrel 1 can be suitable for various specifications of hubs 7.

[0050] Using the industrial bearing kit group 4 can also reduce the purchase cost, and there will be no problem of angular skew that may occur in the ball nest bearing during assembly, and it is also convenient for maintenance and repair.

[0051] The above are the specific embodiments of the present invention and the technical principles applied. If changes are made according to the concept of the present invention and the functions generated do not exceed the spirit covered by the specification and the drawings, they should all be within the scope of the present invention and are hereby stated.

Claims

1. A universal size adjustment and positioning structure for a bicycle rim hub spindle bearing, characterized in that Comprising: A mandrel, which is a metal rod, and screw threads are formed by rolling threads at both ends of the mandrel; Two sets of positioning nut devices, each positioning nut device includes two nuts, and each positioning nut device is screwed on the screw thread part of the mandrel close to the inner side of the mandrel; Two sets of ball bowl bearing caps, each ball bowl bearing cap has the shape of a round cap, a perforation is provided in the center of the ball bowl bearing cap, and each ball bowl bearing cap is respectively arranged on both sides of the mandrel through the perforation; Two sets of industrial bearing kit groups, each industrial bearing kit group is respectively installed at both ends of the mandrel, and an outer diameter ring of each industrial bearing kit group is nested into the inner side of the ball bowl bearing cap; Two sets of fixing seats, each fixing seat is respectively fixed on the other side of each industrial bearing kit group; Meanwhile, the inner diameter ring of the industrial bearing kit group is positioned by each positioning nut device; Two sets of pressing parts, each pressing part is respectively combined with the outer side of the fixing seat, so that the hub group is locked and fixed on the frame or the front fork.

2. The universal size adjustment and positioning structure of the bicycle rim hub spindle bearing as described in claim 1, characterized in that, The fixing seat is a hexagonal nut.

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