KR20070009289A - The motorcycle ball-bearing retainer, race manufacture jig and steering comp race gage - Google Patents

Abstract

A ball bearing retainer for a steering shaft for a motor cycle is provided to remarkably extend the lifespan of a ball bearing by allowing only the ball bearing to make contact with curved portions of upper and lower races. In a ball bearing retainer for a steering shaft for a motor cycle, a plurality of ball bearings(400) is located in an upper race(100) and a lower race(200). A rib surrounding the outer peripheral surface of a positioning hole protrudes from the lower end side of the outer surface. An arc-like catching boss extending from the rib is formed on the outer side of the lower end of the positioning hole. A support rib is integrally protruded from the upper end of the inner side of the positioning hole to the lower side.

Description

Ball bearing retainer and race making jig and steering comp and gage steering gauge for motorcycle steering axle {The motorcycle ball-bearing retainer, race manufacture jig and steering comp race gage}

1 is a perspective view showing a separated state between the ball bearing retainer and the upper and lower races adopted in the present invention,

2 is a view showing a state in which the outer surface of the ball bearing retainer is schematically enlarged,

3 is a view schematically showing an enlarged inner surface of the ball bearing retainer,

Figure 4 is a cross-sectional view showing a state in which the ball bearing retainer of the present invention is attached to the upper and lower races, respectively.

5 is a schematic cross-sectional view showing a state where the upper and lower races are processed by using each jig and the wrapping tool,

6 is an inspection gauge for confirming whether or not a ball bearing retainer according to the present invention is defective,

7 is a front view in a state where the inspection gauge is coupled to the base and the like,

FIG. 8 is a view showing a state in which a bearing structure having a ball bearing retainer according to the present invention is arranged on a motorcycle steering shaft.

※ Brief description of the main symbols in the drawings

100; Upper race 110; bend

200; Bottom race 210; bend

300; Retainer 310; Seater

311; Engaging protrusion 320; live

330; Support rib 400; Ball bearing

500; Jig 510; Lapping

600; Inspection gauge 610; shaft

620; Support ring 630; Down gauge

640; Upper gauge 700; Base

710; Fastener

The present invention provides a retainer structure for interposing a steering comp system applied to a steering shaft of a motorcycle between an upper race and a lower race, and a jig for producing each race, and each of the upper and lower races in a manufactured state. In order to determine the, to provide a retainer of the ball bearing and the jig for manufacturing the bearing, and the inspection gauge for reading the defect of the produced race, the injection molding of the ball bearing to be fixed to be mounted It is easy to remove and combine the ball bearings from the retainer so that the work such as excellence and maintenance of the initial coupling work of the ball bearings can be performed smoothly, and provides a gauge that can easily determine whether there is a defect in the lace manufacturing process. Ball bearings for motorcycle steering shaft It will be on the upper and lower ball bearings and ball bearings manufactured jigs race inspection gauge.

In general, the bearing is a mechanical element that is coupled to the rotating shaft to smoothly perform rolling motion, reduces wear due to friction between various mechanical parts, and transfers power to each mechanical part required from the power means or rolling motion. It is common to be used as a means for significantly lowering the coefficient of friction between the shaft and the mechanical parts in contact with the high speed rotation of the shaft according to the progress of the back, and to prevent the transmission of unreasonableness to the mechanical device. Such bearings adopt radial bearings when load is applied in the direction orthogonal to the axis according to the distribution of loads.In contrast, thrust bearings are used when the load is applied in a direction coinciding with the axis. Coefficient of friction between components and components generated during power transmission or interruption by using It is being used as an important part of a means to minimize t of friction.

In the case of a bearing that is arranged on a steering shaft in a motorcycle and connected to the body side, the bearing is simultaneously subjected to an axial load and a perpendicular load. As a steering shaft such as a motorcycle, a bearing is usually used by laying a bearing.

That is, by providing a configuration in which the ball bearing is interposed between the upper race and the lower race, so that the rolling motion can be made smoothly on the steering shaft in the motorcycle, the ball bearing in the motorcycle steering shaft is mainly the axial load than the perpendicular load Since the ball bearing is damaged during use, it is relatively large. Therefore, the ball bearing can be easily removed and inserted for immediate response and maintenance. Therefore, the ball bearing is placed on the upper race and the lower race. In the process of placing the work between the worker to seat the ball bearings inside the upper race, and then to combine the lower race so that the ball bearings are in contact with the curved portion of the lower race.

However, in the above configuration, it is not easy to interpose the ball bearings between the upper and lower races individually, and the problem that the ball bearing is displaced to the outside during the operation of coupling between the upper and lower races is pointed out.

In addition, the load should be applied uniformly to each ball bearing so that the load is evenly distributed during rolling motion in the state where the ball bearing is interposed between the upper and lower races, but the distribution of the load may vary depending on the precision of the upper and lower race face. Problems such as hindering the progress of smooth rolling motion or promoting the breakage of the ball bearings due to eccentric loads have been pointed out.

Therefore, the present invention has been made to solve the above problems,

First, by providing a retainer that can be easily detachable, the ball bearing shortens the production process, shortens assembly time and reduces manpower when assembling a motorcycle, and maximizes cost savings through increased production and reduced production costs through reduced defect rates. There is a purpose.

Second, there is a purpose to enable easy operation when it is necessary to maintain after a certain period of time, or to replace only a part of a particular ball bearing damaged among a number of ball bearings.

Third, the present invention provides the structure of the retainer to fit the steering shaft for motorcycles, so that the ball bearings are made to be uniformly distributed only at a certain portion so that the distribution of the load due to the uniform contact in the upper and lower races is uniformly generated. Another aim is to minimize breakage and damage.

Fourth, the present invention has another object to improve the processing accuracy of the inner contact surface of the ball bearing in the upper and lower races that are positioned above and below the retainer to maintain a uniform contact area between the ball bearing and the race at all times.

The present invention for achieving the above object,

In a known race steering comp structure in which a plurality of ball bearings 400 are arranged on a steering shaft for a motorcycle and are positioned and coupled to the upper race 100 and the lower race 200,

The outer diameter becomes narrower toward the upper side than the lower side, and the seating hole 310 for inserting the ball bearing 400 into the outer surface is perforated at equal intervals, and the ribs surrounding the seating hole 310 outer circumferential surface protrude from the lower side of the outer surface. A support 320 protruding downward from the upper end of the seat hole 310 is formed, and an arc-shaped locking protrusion 311 extending from the rib 320 is formed outside the seat hole 310. The rib 330 is characterized in that it comprises a retainer 300 which is injection molded into a synthetic resin material.

The upper side of the support rib 330 is characterized in that it comprises smaller than the inner diameter of the seating hole (310).

In addition, the present invention is characterized in that it comprises a jig 500 and the wrapping tool 510 for processing the upper and lower races (100,200).

In another aspect, the present invention is characterized by providing an inspection gauge 600 for determining whether the upper and lower races (100,200) of the manufactured ball bearings are defective.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, in order to help understanding of the present invention, a top and bottom lace processing process of a ball bearing, a retaining process, and a process for inspecting a finished product through each process The description will be divided into the process of judging whether there is a defect.

(Ball bearing upper and lower race processing)

As shown in the drawings, the upper and lower races 100 and 200 of the ball bearings adopted in the present invention include a plurality of ball bearings 400 interposed between the retainers 300 mainly disposed in the present invention and inserted into the retainers 300. A uniform point contact is made on the inner surfaces of the races (100,200), and it is a configuration for effectively distributing and distributing the celebrations generated from the steering shaft of the motorcycle and for achieving a smooth rolling motion.

The upper and lower races 100 and 200 are processed with different shapes as shown in the drawing. When the circular state of the upper and lower races 100 and 200 is made by primary cutting and precision processing, the wrapping holes 510 into the jig 500. ) And the lower race 200 or the upper race 100 to be fixed below by using a separate fixing means (not shown), and then rotating means (not shown) coupled with the upper side of the jig 500. The lower end of the lapping tool 510 in contact with the curved portions 110 and 210 of the upper and lower races 100 and 200 may be precisely processed by the rotation of the upper and lower races 100 and 200.

(Molding process of retainer)

The retainer 300 in the present invention is molded out of a synthetic resin material, unlike a retainer such as steel material used in other ball bearings or roller bearings.

As shown in the figure, the retainer 300 employed in the present invention is injection molded to form a shape in which the outer diameter of the lower portion is larger and the outer diameter of the upper portion is gradually smaller toward the upper portion and penetrated inward from the outer surface of the retainer 300. The seating hole 310 is molded in a state of being spaced at equal intervals.

Such a seating hole 310 is a ball bearing 400 seated in a configuration for fitting the ball bearing 400 having a predetermined diameter is abutted with the curved portion (110, 210) of the upper race 100 and the lower race 200 described above. The point contact is configured to be made.

That is, as shown in the figure, the ball bearing 400 protruding outward from the seating hole 310 is in contact with the curved portion 110 of the upper race 100, and the other side of the ball bearing 400 is the seating hole 310. Protruding into the inner side of the lower race 200 is in contact with the point of contact with the curved portion 210 of the lower race 200, such a retainer 300 is between the upper race 100 and the lower race 200 It is important to be intervening without causing interference at all.

In view of such a point, in the present invention, as described above, the shape of the retainer 300 gradually decreases from the lower side to the upper side so as to have a tapered shape, the inclination of which is on the motorcycle steering axis applied. Of course, it can be changed differently within an appropriate range depending on the congratulations being added.

On the other hand, the ball bearing 400 that is fitted to the seating hole 310 of each of the retainers 300 is a position (that is, contact with the curved portion 110, 210 of each of the upper race 100 and lower race 200) The axial load of the steering shaft applied to maintain the coupled state on the evenly distributed evenly, for this purpose, in the present invention, as shown in the figure, the ribs 320 and the support ribs respectively to the outside and the inside of the retainer 300 ( 330 is integrally molded and injected.

That is, the rib 320 is integrally protruded upward from the lower end of the retainer 300 to the upper side, but is formed in a shape surrounding the lower end of the seating hole 310.

On the other hand, the circular arc diameter in the rib 320 is formed between the outer circumference of the seating hole 310 is formed to be somewhat larger than the diameter of the seating hole 310 to form a locking projection 311 ball bearing 400 It is desirable to be able to maintain this inserted state.

In addition, the support ribs 330 integrally protruding from the upper side of the retainer 300 toward the lower side may be integrally formed in a bar shape, but the support ribs 330 may be stepped on both sides of the seating hole 310. This is made to be made, when the ball bearing 400 is inserted into the seating hole 310 to prevent the ball bearing 400 from falling into the retainer 300 by the support of the support rib 330.

Therefore, the ball bearing 400 is inserted by the locking protrusion 311 and the support rib 330 formed on the outer side and the inner side of the seating hole 310 of the retainer 300 by the external force. Without it, it is possible to maintain a state of being seated in the seating hole 310 of the retainer 300 without being separated.

By using the retainer 300 manufactured as described above, it is possible to easily insert the plurality of ball bearings 400 into the seating holes 310 to be drilled, respectively, so that a considerable productivity in the workability can be expected.

In addition, even though the coupling between the upper race 100 and the lower race 200 provided above and below the retainer 300 is completed, the retainer 300 may be positioned without any interference in the upper and lower races 100 and 200. In this way, the ball bearing 400 can be smoothly contacted with the curved portions 110 and 210 of the upper and lower races 100 and 200 without rolling friction due to interference when rolling on the steering shaft for motorcycles.

(Of the race Badness  Discrimination process)

On the other hand, in order to confirm the failure of the upper and lower races (100, 200) coupled to the ball bearing 400 is completed as described above, in the present invention, the upper and lower parts of the ball bearing 400 using the inspection gauge 600 as shown in the drawing It is possible to check the presence or absence of the inner diameter of the race (100,200).

The inspection gauge 600 is composed of a shaft 610 extending downwardly based on the support ring 620 and a downward gauge 630 spaced apart from the support ring 620 and spaced apart from the upper gauge 640. do.

The inspection gauge 600 is to check the presence or absence of defects according to the processing degree of the ball bearing 400, the upper and lower races (100, 200) completed through each process line, for example, can be perforated to a separate base 700 upper surface The upper gage 640 of the inspection gauge 600 and the upper 100 or the lower race 200 in a state of inserting and supporting the shaft 610 protruding downward of the inspection gauge 600 into the fixing hole 710. Passed to the lower gauge 630 to determine whether there is a bad or not according to the passage.

Therefore, the inner diameter of the bearing, in particular, the upper race 100 and the lower race 200, the inner diameter of the bearing is very important in order to deliver a smooth rolling motion to the steering shaft of the motorcycle, in the present invention such an inspection more efficiently Performing and excellent workability, it was to provide an inspection gauge 600 that can easily check the presence or absence of defects.

As illustrated in FIG. 7, it is preferable that the outer diameters of the upper gauge 640 and the lower gauge 630 are different from each other in the inspection gauge 600 according to the present invention. For example, the outer diameter d of the upper gauge 640 is It is formed to be smaller than the outer diameter (D) of the lower gauge (630). (D> d)

Here, the outer diameter (d) of the upper gauge 640 and the outer diameter (D) of the lower gauge 630, the inner diameter side of the upper and lower races (100, 200) of the ball bearing is the upper gauge 640 and the lower gauge 630. It is possible to determine whether or not the failure according to whether or not to pass.

That is, the outer diameter of the upper gauge 640 of the inspection gauge 600 is selected within the tolerance range so as to be identified as good quality when caught or passed through the inner diameter of the upper and lower races (100,200), the lower gauge (630) The upper and lower races 100 and 200 which are passed through are provided with the inspection gauge 600 by selecting an outer diameter exceeding a tolerance range, which is an appropriate range, so as to be judged as defective.

Therefore, when the upper and lower races (100,200) passed through the inspection gauge 600, respectively, the product is determined to be good in the case of a product that is no longer caught by the upper gauge 640, but passed through the upper gauge 640, but lower gauge The product that does not pass through the 630 is determined as a good product, but the product of the upper and lower races (100, 200) that passes through the lower gauge 630 is determined to be defective and can be extracted.

Therefore, according to the present invention, the retainer for attaching the ball bearings arranged on the motorcycle steering shaft is tapered upward and molded and molded into a synthetic resin material, but the ball bearings are damaged by the load provided in the axial direction in a long-term use process. When such a phenomenon occurs, it can be expected that the replacement and replacement of the ball bearings, which are problematic after disassembly of the steering shaft, can be easily performed.

In addition, according to the present invention, by integrally forming and injection-molded ribs and support ribs each having a locking protrusion on the inner and outer surfaces of the retaining hole of the retainer, it is possible to maintain a state in which the ball bearing is mounted, thereby providing a space for storing grease, and And by combining the lower races, only the ball bearings contact the curved portions of the upper and lower races without interference of the retainer, so that the rolling motion can be carried out over the entire ball bearings, thereby prolonging the service life of the ball bearings according to the even distribution during the entire celebration. You can expect a prolonged effect.

In addition, according to the present invention, by providing the inspection gauge of the upper and lower races having a relatively simple configuration, it is possible to easily and easily determine whether the upper and lower races, even if not skilled, can be expected to increase the productivity accordingly.

Claims (5)

In the known ball bearing structure in which a plurality of ball bearings 400 arranged on a steering shaft for a motorcycle are positioned and coupled to the upper race 100 and the lower race 200, The outer diameter becomes narrower and taper from the lower side to the upper side, and the seating holes 310 for inserting the ball bearings 400 into the inner side are drilled at equal intervals, and the seating holes 310 from the lower side of the outer surface A rib 320 is formed to surround and protrudes, and an arc-shaped engaging protrusion 311 extending from the rib 320 is formed to the outside of the bottom of the seating hole 310, and is downward from an inner top of the seating hole 310. Ball bearing retainer for a motorcycle steering shaft comprising a retainer (300) molded and molded out of a synthetic resin so that the support rib (330) protruding integrally. The method of claim 1, Both sides of the support ribs 330 above the motorcycle steering shaft ball bearing retainer, characterized in that it comprises smaller than the inner diameter of the seating hole (310). In order to wrap the curved portions 110 and 210 of the upper and lower races 100 and 200 fixed by the known fixing means, the jig 500 and the internal parts of the jig 500 coupled by the known rotating means are fixed to the curved portions 110 and 210. Ball bearing lace manufacturing jig for a motorcycle steering shaft comprising a wrapper having a lower end of the shape (510). Inspection gauge 600 consisting of a shaft 610 extending downward on the basis of the supporting ring 620 in the center and the lower gauge 630 and the spaced apart upper gauge 640 to the upper side of the supporting ring 620. Ball bearing upper and lower race inspection gauge for the steering wheel of the motorcycle comprising a The method of claim 4, wherein The outer diameter of the upper gauge 640 is within the inner diameter range of the upper and lower races (100,200) of the good, the outer diameter of the lower gauge 630 is outside the inner diameter range of the upper and lower races (100,200) of the good, the outer diameter of the lower gauge (630) Ball bearing upper and lower race inspection gauge for the steering wheel of the motorcycle comprising a relatively larger than the outer diameter of the upper gauge (640).

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